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Descent3/physics/findintersection.cpp
Jan Engelhardt 48953868df build: resolve 101 instances of -Wunused-variable
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/*
* Descent 3
* Copyright (C) 2024 Parallax Software
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
--- HISTORICAL COMMENTS FOLLOW ---
* $Logfile: /DescentIII/Main/physics/FindIntersection.cpp $
* $Revision: 231 $
* $Date: 10/25/99 1:17a $
* $Author: Chris $
*
* Find intersection code
*
* $Log: /DescentIII/Main/physics/FindIntersection.cpp $
*
* 231 10/25/99 1:17a Chris
*
* 230 10/21/99 3:12p Kevin
* Mac merge & memory savings
*
* 229 6/10/99 6:31p Chris
* Added support for the new editor
*
* 228 5/23/99 2:53a Chris
* Removed annoying asserts
*
* 227 5/23/99 12:32a Chris
* Fixed problems with ignoring render though portals
*
* 226 5/20/99 1:16a Chris
* Fixed the last wall stuck cases
*
* 225 5/18/99 11:10a Matt
* Added variable ceiling height.
*
* 224 5/17/99 6:05p Chris
* Added support for hit faces on a submodel
*
* 223 5/17/99 5:01p Matt
* Changed the code to check for objects in visited rooms whether the
* vector started on the terrain or inside. This fixes the problem where
* the mass driver, when fired from outside, could not hit objects inside.
*
* 222 5/12/99 6:16a Chris
* fvi_QuickDistObjectList if stop at closed doors, it also stops at
* blocked/forcefielded portals
*
* 221 5/09/99 3:07p Jason
* added a way to track FVI rays
*
* 220 5/07/99 6:21p Jeff
* hooked up fvi to rtperformance
*
* 219 5/03/99 3:14p Matt
* Fixed bug in Chris's hack.
*
* 218 5/03/99 1:52p Chris
* Hacked FVI to make relinking consistant even with level cracks
*
* 217 4/20/99 8:14p Chris
* Added support for object's that hit the ceiling and for making the
* level always check for the ceiling (inside and outside the mine)
*
* 216 4/18/99 5:42a Chris
* Added the FQ_IGNORE_RENDER_THROUGH_PORTALS flag
*
* 215 4/14/99 1:42a Jeff
* fixed case mismatched #includes
*
* 214 4/12/99 10:21a Chris
* Added another divide by zero assert
*
* 213 4/12/99 10:20a Chris
* Added an assert to catch bad hit obj sizes
*
* 212 4/08/99 4:53p Chris
*
* 211 4/05/99 3:56p Chris
* We should be able to pickup clutter now
*
* 210 4/02/99 10:18a Chris
* SPHERE-SPHERE for player rock collisions
*
* 209 3/31/99 5:16p Matt
* Don't look at non-shell faces when determining what room a point is in
*
* 208 3/09/99 10:52a Chris
* Fix a bug introduced when trying to to fix the trigger problems
*
* 207 3/05/99 1:02p Jason
* sped up raycasting for light coronas
*
* 206 3/04/99 8:15p Matt
* Hack that might help the exit level trigger problem on OEM level 0.
*
* 205 3/04/99 5:54p Chris
* Patched the occassional not found portal trigger
*
* 204 2/25/99 1:54p Chris
* Ignoring weapons now ignores shockwaves, shards, and fireballs
*
* 203 2/16/99 3:09p Chris
*
* 202 2/16/99 1:51p Chris
* FIxed multiple trigger bugs
*
* 201 2/15/99 4:38p Chris
* Damn... Lava was hitting triggers!!!!!!
*
* 200 2/15/99 11:47a Chris
*
* 199 2/11/99 6:25p Chris
* Added PF_NO_COLLIDE_DOORS
*
* 198 2/02/99 8:44a Chris
* I made buildings with AI work correctly (ie really big robots should be
* buildings)
* anim to and from states are now shorts instead of bytes
*
* 197 1/29/99 5:09p Chris
* Made changes for ROCKS
*
* 196 1/29/99 12:48p Matt
* Rewrote the doorway system
*
* 195 1/18/99 8:07p Chris
* Added the no-collide same flag (for flocks and nests)
*
* 194 1/18/99 2:46p Matt
* Combined flags & flags2 fields in object struct
*
* 193 1/15/99 5:59p Chris
*
* 192 1/13/99 6:54a Jeff
* fixed #includes for linux
*
* 191 1/13/99 2:29a Chris
* Massive AI, OSIRIS update
*
* 190 1/01/99 4:53p Chris
* Fixed a problem with long-rays causing unnecessary asserts
*
* 189 1/01/99 4:10p Chris
* Added some const parameters, improved ray cast object collide/rejection
* code
*
* 188 11/23/98 11:06a Chris
* Added support for finding just AIs and Players with
* fvi_QuickDistObjectList
*
* 187 11/02/98 6:15p Chris
* Room AABBs get saved with the level and the sort_face and dec_sort_face
* list s have been removed
*
* 186 10/29/98 5:20p Chris
* Player ships collide smaller now
*
* 185 10/22/98 10:25p Kevin
* took out volatile
*
* 184 10/22/98 10:25p Chris
* Fixed a major bug with fvi_QuickXList() -- preincrement f@cked me.
*
* 183 10/22/98 9:46p Chris
*
* 182 10/22/98 9:45p Chris
* Added some asserts
*
* 181 10/21/98 9:41p Chris
* Improved walking code!
*
* 180 10/21/98 7:44a Chris
* Tweaked player wall collisions
*
* 179 10/20/98 8:05p Sean
* Fixes callers with a start room of -1
*
* 178 10/20/98 6:58p Chris
* My god - improved the cylinder code. :)
*
* 177 10/18/98 5:36p Chris
*
* 176 10/17/98 12:25p Chris
* Fixed attached flares
*
* 175 10/16/98 8:33p Chris
* Fixed attached flare problem
*
* 174 10/16/98 6:19p Chris
* More linked object fixes
*
* 173 10/16/98 12:27a Chris
* Improved collision code. Finish it tomarrow.
*
* 172 10/15/98 12:22a Matt
* Fixed compile warnings
*
* 171 9/22/98 6:42p Dan
* Temp fix
*
* 170 9/22/98 12:02p Matt
* Fixed compile warnings
*
* 169 9/01/98 12:04p Matt
* Ripped out multi-face portal code
*
* 168 8/28/98 4:33p Chris
*
* 167 8/17/98 3:14p Chris
* Fixed a bug with the FQ_IGNORE_WALLS flag that caused precomputed
* weapons not to relink into the mine from the terrain.
*
* 166 8/03/98 3:59p Chris
* Added support for FQ_IGNORE_WEAPONS, added .000001 attach code, fix a
* bug in polymodel collision detection
*
* 165 7/31/98 11:52a Chris
* Weapons can be persistent. Added ability for objects to be manually
* set for no object collisions.
*
* 164 7/23/98 4:08p Chris
*
* 163 7/23/98 12:46p Chris
* Added a flag to ignore external rooms
*
* 162 7/23/98 12:31p Chris
*
* 161 7/22/98 6:48p Chris
*
* 160 7/22/98 6:42p Chris
* A relink fix for points on a wall
*
* 159 7/22/98 2:31p Chris
* Fixed an odd bug with objects moving farther than a long ray externally
* (never happened until I did the weapon pre-compute stuff)
*
* 158 7/21/98 2:14p Chris
* Some FVI speedups - not done
*
* 157 7/17/98 9:56a Chris
* Intermediate checkin
*
* 156 7/16/98 8:29p Chris
* Partial implementation of the new collide code
*
* 155 7/02/98 2:51p Chris
* Added a fast line to bbox function
*
* 154 6/15/98 6:08p Chris
* Hit_type to hit_type[0]
*
* 153 6/15/98 6:58a Chris
* Comment'ed out most bbox related additions
*
* 152 6/03/98 6:50p Chris
* Fixed some infinity bugs
*
* 151 6/03/98 6:42p Chris
* Added multipoint collision detection an Assert on invalid (infinite
* endpoint).
*
* 150 6/03/98 12:34p Chris
* Fixed a potential bug in subdivided rays
*
* 149 6/01/98 9:23p Chris
* Removed a mprintf
*
* 148 6/01/98 9:23p Chris
* Fixed a bunch of collision problems
*
* 147 6/01/98 11:38a Chris
* Made FQ_SOLID_PORTALS more effective
*
* 146 5/26/98 10:45a Keneta
* Shockwaves should not collide with anything
*
* 145 5/22/98 2:42p Sean
* FROM JASON:Upped max next portals to 50
*
* 144 5/20/98 1:46p Chris
* Fixed a bug in QuickDistFaceList
*
* 143 5/18/98 11:59a Chris
*
* 142 5/05/98 5:23p Chris
* Faster external room collisions with FQ_EXTERNAL_ROOMS_AS_SPHERE
*
* 141 5/04/98 10:17a Chris
* Improved checking
*
* 140 5/04/98 9:40a Chris
* Improved Physics_player_verbose stuff
*
* 139 5/04/98 12:16a Chris
* More debugging
*
* 138 5/03/98 10:59p Chris
* Fixed problems with external rooms
*
* 137 5/03/98 8:36p Chris
* Additional debug info
*
* 136 4/23/98 5:58p Chris
* OOps.
*
* 135 4/23/98 5:44p Chris
* Working on Door collisions
*
* 134 4/20/98 6:56p Chris
* Removed sphere check for poly2sphere (just AABB)
*
* 133 4/20/98 5:48p Chris
* Patching a collision bug
*
* 132 4/13/98 5:34p Chris
* Sped up fvi. check_hit_objs is not called at all for fvi calls with
* FQ_CHECK_OBJS set
*
* 131 4/13/98 4:41p Chris
*
* 130 4/13/98 3:51p Chris
* Added sphere bubbles to weapons (when wanted) and fixed a small FVI
* bug
*
* 129 4/13/98 2:21p Chris
* Fixed some collision problems dealing with AABBs and Polymodel paging
* in.
*
* 128 4/09/98 12:05p Chris
* Added parenting for all object types. :)
*
* 127 4/08/98 7:38p Chris
*
* 126 4/08/98 2:38p Chris
* Fixed powerup pickup bug
*
* 125 4/07/98 8:14p Chris
* Made powerups easier to hit
*
* 124 4/06/98 4:09p Chris
* Made f_correcting a bool -- NOTE: chrishack -- physics need to handle
* powerups in a good manner (flying through them).
*
* 123 4/06/98 2:54p Chris
* TEMPORARY FIX -- Object collisions are of less priority than wall
* collisions -- keep this until we have multipoint collision detection --
* chrishack
*
* 122 4/03/98 3:35p Chris
* Fixed problems with FQ_LIGHTMAP_ONLY (has to include external rooms)
*
* 121 4/03/98 11:27a Chris
* Doubled the size of powerups
*
* 120 4/01/98 3:51p Chris
*
* 119 4/01/98 3:46p Chris
* Added hack for powerups and players
*
* 118 3/25/98 1:17p Chris
* Removed a bug.
*
* 117 3/24/98 2:57p Chris
* Fixed a bug in the QuickDistObjectList function
*
* 116 3/23/98 11:37a Chris
* Added the f_lightmap_only parameter to fvi_QuickDistObjectList
*
* 115 3/23/98 11:18a Chris
* Added int fvi_QuickDistObjectList(vector *pos, int init_room_index,
* float rad, int16_t *object_index_list, int max_elements)
*
*
* 114 3/18/98 10:12p Chris
* Added some more bug checking. If 2 objects radii add up to zero, then
* let me know. :)
*
* 113 3/18/98 5:01p Chris
* Fixed a bug with the zero rad wall collision code
*
* 112 3/18/98 4:50p Chris
* Added a speed opt. for zero radius wall collision objects
*
* 111 3/18/98 4:31p Chris
* Speed up fvi and fixed some bugs
*
* 110 3/17/98 3:36p Chris
* Fixed bugs in the relink code and the QuickDistFaceList code. (They
* where using fvi_max_xyz and fvi_min_xyz)
*
* 109 3/17/98 11:33a Chris
* Improved performance (AABB updates on poly-sphere collide)
*
* 108 3/16/98 9:55p Chris
* Working on optimizing fvi
*
* 107 3/16/98 8:25p Chris
* Fixed bugs with the new fvi code
*
* 106 3/16/98 6:55p Chris
* Temporary fix. There is a problem somewhere in the new optimazations.
*
* 105 3/16/98 5:50p Chris
* Added sorted face lists for fvi
*
* 104 3/16/98 2:52p Chris
* Moved some asserts for FQ_NO_RELINK
*
* 103 3/16/98 1:13p Chris
* Speed up
*
* 102 3/16/98 12:50p Chris
* Speed up?
*
* 101 3/16/98 9:46a Chris
* Improved the speed
*
* 100 3/16/98 9:43a Chris
* Added FQ_NO_RELINK
*
* 99 3/16/98 9:25a Chris
* Sped up fvi
*
* 98 3/13/98 5:55p Chris
* Added the new collision spheres
*
* 97 2/23/98 6:50p Jason
* changes to help facilitate fast lighting with shadow volumes
*
*
* 96 2/20/98 1:45p Chris
* Milestone fixes
*
* 95 2/19/98 6:17p Chris
* Added some debug info
*
* 94 2/15/98 2:08p Chris
*
* 93 2/12/98 2:07p Chris
* Fixed the trigger face list
*
* 92 2/11/98 10:04p Chris
* Added FQ_ONLY_DOOR_OBJ and fixed a bug with FQ_ONLY_PLAYER_OBJ
*
* 91 2/10/98 2:45p Chris
* Made objects not get checked if FQ_CHECK_OBJECTS is not set.
* (OBJ_ROOMS are still checked)
*
* 90 2/10/98 2:41p Chris
* Fixed a problem with large objects beening hit when they shouldn't
*
* 89 2/06/98 3:47p Brent
* CHRIS -- I made the MAX_CELLS_VISITED equal to the number of cells on
* the terrain. This is insane, but it allows for the placement of HUGE
* objects. :) -- Thanx Brent.
*
* 88 2/06/98 2:57a Chris
* Added point_collide_with_walls and ignore_robot_collisions
*
* 87 2/05/98 1:58p Chris
* Made the cellnum be a roomnum for hitting terrain
*
* 86 2/04/98 6:23p Matt
* Changed object room number to indicate a terrain cell via a flag. Got
* rid of the object flag which used to indicate terrain.
*
* 85 2/02/98 8:19p Chris
* Fixed the hung on wall problem and the powerup problem.
*
* 84 1/29/98 5:50p Matt
* Changed old camera object type to be viewer object (for editor), and
* now camera objects will just be for game cameras.
*
* 83 1/20/98 12:25p Luke
* CHRIS-- Added a check to make sure that the startseg is not an external
* room
*
* 82 1/20/98 12:22p Chris
* Removed the attempting to patch mprintf
*
* 81 1/19/98 5:05p Chris
* Added ceiling collisions for players and powerups
*
* 80 1/14/98 7:56p Jason
* don't do obj relink if you're in the same room
*
* 79 1/07/98 4:11p Jason
* CHRIS -- Fixed stupid mistake with edge fix -- .y values where getting
* misassigned.
*
* 78 1/06/98 7:14p Chris
* Made edge of world less dangerous
*
* 77 12/22/97 6:19p Chris
* Moved weapon battery firing sound off the projectile (weapon) and into
* the weapon battery.
*
* 76 12/18/97 12:25p Chris
* Sub-divide long rays and use a better flat-line algorithm for the
* terrain fvi.
*
* 75 12/16/97 6:11p Chris
* Attempt to improve FVI for outside
*
* 74 12/03/97 2:36p Sean
* Added another code fix for external room problems
*
* 73 11/24/97 11:41a Chris
* Fixed a small glitch in the fvi_check_node stuff
*
* 72 11/24/97 11:01a Chris
* Removed a debugging assert
*
* 71 11/24/97 10:15a Chris
* Improved fvi
*
* 70 11/21/97 5:26p Jason
* checked in so chris can find a bug
*
* 68 11/20/97 6:02p Chris
* Fixed the quick cell list code
*
* 67 11/17/97 5:46p Chris
* Fixed a problem in line_to_sphere1 it -- see history for diff.
*
* 66 11/11/97 8:39p Chris
* Passed the wrong object to PolyCollide when doing the relative motion
* mapping of polygon moving and hitting a sphere.
*
* 65 11/11/97 11:26a Sean
* CHRIS -- increased MAX_NEXT_PORTALS. It seems that radiosity rays can
* cross a lot of portals in a single room (in this case it was over 5)...
* Beefed it up to 20. It that causes a problem, it can be beefed up more
* without any disadvantage.
*
* 64 11/03/97 5:10p Jason
* Fixed by Chris, forgot to assume fvi_terrain_obj_visit_list to the max
* cells visited limit.
*
* 63 10/29/97 3:39p Matt
* Got rid of compiler warning
*
* 62 10/28/97 5:46p Chris
* Added a quick cell list function
*
* 61 10/28/97 12:20p Chris
* Added support to ignore wall collisions
*
* 60 10/22/97 4:33p Chris
* Improved default hit_obj_type collision types (i.e. when the ray is
* cast with a -1 as its index)
*
* 59 10/22/97 4:30p Chris
* We can now slew between the mine and the terrain
*
* 58 10/22/97 12:42p Chris
* Incremental BBOX stuff and added support for subobject hit returned
* from fvi
*
* 57 10/21/97 4:14p Chris
* Incremental improvements to the fvi/physics/collide integration
*
* 56 10/20/97 3:51p Chris
* Fixed a problem with the POLY_BBOX collide code
*
* 55 10/20/97 3:43p Chris
* Added more collide code
*
* 54 10/20/97 11:55a Chris
* Added some support for the new collide system.
*
* 53 10/15/97 5:08p Chris
* Fixed the collision_side_pnt and added a relative position/velocity
* check
*
* 52 10/14/97 6:56p Chris
* In middle of some incremental improvements
*
* 51 10/07/97 3:51p Chris
* Added support for object backface checking -- external rooms are
* classified as objects
*
* 50 10/06/97 2:36p Chris
* Improved and fixed fvi.
*
* 49 10/06/97 12:36p Chris
* Intermediate fix for terrain rendering problems
*
* 48 10/06/97 10:52a Jason
* added "FQ_IGNORE_NON_LIGHTMAP_OBJECTS" flag
*
* 47 10/05/97 6:14a Chris
* Added terrain speedup. Allowed poly-collision for weapons.
*
* 46 10/03/97 6:24p Chris
* Corrected a mistype to disallow all camera collisions
*
* 45 10/03/97 3:34p Chris
* No camera collisions
*
* 44 10/02/97 7:02p Chris
* Removed LOD optimazation
*
* 43 10/02/97 6:44p Chris
* Added support for quick fvi_checks
*
* 42 10/02/97 5:38p Chris
* Added support for invisible terrain tiles
*
* 41 10/02/97 11:34a Chris
* Added support for external room collisions
*
* 40 9/19/97 6:58p Chris
* Fixed some bugs with the big object system and removed some annoying
* mprintf's
*
* 39 9/19/97 4:56p Jason
* FROM CHRIS: Took out clutter assert in check_hit_obj
*
* 38 9/19/97 1:01p Chris
* Added better large object support
*
* 37 9/17/97 3:24p Chris
*
* 36 9/17/97 11:01a Chris
* Working on poly collision code (not done) and removed dependance on
* segment.h
*
* 35 9/15/97 6:24p Chris
* Added a second chance check if no rooms are initialy found
*
* 34 9/15/97 4:43p Craig
*
* 33 9/15/97 5:20a Chris
* Added sphere2poly support. Rearranged object collisions.
*
* 32 9/12/97 6:36p Chris
* Added collision terrain segment support
* Added some LARGE OBJECT collision support
*
* 31 9/12/97 10:37a Chris
* Added a zero radius speed up for fvi terrain.
*
* 30 9/11/97 7:08p Matt
* Fixed minor bug
*
* 29 9/11/97 3:10p Chris
*
* 28 9/11/97 3:08p Chris
* Added support for weapons flying through holes in transparent textures.
*
* 27 9/11/97 1:58p Chris
* Added ability to ignore moving objects
*
* 26 9/11/97 12:43p Chris
* Added new support for face_physics_info from room.h. Also, changed how
* we detect portals. Also added recorded faces.
*
* 25 9/10/97 11:58a Matt
* Ripped out some unused commented-out code
*
* 24 9/02/97 6:32p Jason
* Fixed fvi_rooms_visited array in the quick face list code.
*
* 23 9/02/97 4:16p Chris
* Fixed the 'clockwise' vertices problem with backface checking. I.e.
* vertices should be oppositely ordered when negating the face normal.
*
* 22 9/02/97 3:06p Chris
* Fixed stupid bug
*
* 21 9/02/97 3:04p Chris
* Fixed quick face list bug
*
* 20 9/02/97 11:57a Chris
* Fix a bug in the quick_dist stuff
*
* 19 9/02/97 11:41a Chris
* Added support the the quick face/room from distance function
*
* 18 8/26/97 1:44p Chris
* Fixed a bug in the clipping of a vector to the terrain boundaries.
*
* 17 8/25/97 6:21p Chris
* Portals only crossed at centerpoint
*
* 16 8/20/97 3:16p Chris
* Working on the edge of terrain problems
*
* 15 8/18/97 1:48a Chris
* Added AABB speedups. Added a new way to do inter-room and mine-terrain
* movements. Added a fvi_relink that correctly uses the hit_seg
* FVIF_OUTSIDE flag
*
* 14 8/12/97 3:47p Chris
* Updated the AABB stuff.
*
* 13 8/12/97 1:13p Chris
* Added AABBs.
*
* 12 8/11/97 5:49p Chris
* Allow for some terrain to mine flights
*
* 11 8/05/97 4:43p Chris
* Added support for fly by textures. Added support (fly by) support for
* fly thru textures.
*
* 10 8/04/97 5:35p Chris
* Added support for back face collisions and new fvi code
*
* 9 8/04/97 12:37p Chris
* We now support fvi in Rooms :)
*
* 8 7/31/97 3:12p Chris
* Fixed a problem with the new iterator based radius checker
*
* 7 7/28/97 1:16p Chris
* Allow for player and robots to be hit by weapons and correct parenting
* of weapons.
*
* 6 7/23/97 6:27p Jason
* added code to support terrain simplification
*
* 5 7/23/97 5:14p Chris
* Used a faster iterator for visiting terrain segments
*
* 4 7/15/97 7:29p Chris
* Added a sound for helicopter blades.
*
* 3 7/15/97 5:35p Chris
* New AI code
*
* 39 6/24/97 4:01p Chris
* Fixed another problem with the .y dependancy.
*
* 38 6/24/97 3:53p Chris
* Fixed a bug with the new .y dependancy
*
* 37 6/24/97 3:29p Chris
* Removed the .pos dependancy for terrain and am using the .y instead
*
* 36 6/18/97 3:52p Chris
*
* 35 6/12/97 2:40p Chris
*
* 34 6/10/97 6:23p Chris
*
* 33 6/10/97 5:32p Chris
*
* 32 6/10/97 5:32p Chris
*
* 31 6/05/97 7:22p Matt
* When get list of faces for mesh side, return the normals for each face.
* Also, added a function to return the four floating verts in a side.
*
* 30 5/27/97 5:36p Chris
*
* 29 5/27/97 5:36p Chris
* Incremental.
*
* 28 5/27/97 5:05p Chris
* Added physics for floating segments. We need more
* code if all mesh faces get their own normals or if mesh sides are used
* for non-floating other sides.
*
* 27 5/13/97 5:52p Chris
* Added ability to exit and enter mine. Also did some
* incremental improvements.
*
* 26 5/06/97 11:18a Chris
*
* 25 5/05/97 5:41a Chris
* Added some better polygon collision code. It is still rough though.
*
* 24 4/17/97 3:10p Chris
* Added edge of world object delete. Also did some incremental
* improvements.
*
* 23 4/16/97 3:25p Chris
* Commented the code
*
* 22 4/16/97 1:39p Chris
*
* 21 4/15/97 6:31p Chris
* Added support for self-correcting and non-correcting
* sphere collisions. This allows objects to ignore sphere
* collisions that happen at initial positions, but allows the walls to
* self-correct edges.
*
* 20 4/15/97 4:13p Chris
*
* 19 4/11/97 3:05a Chris
* Added some terrain collision code. Need ground.
*
* 18 3/24/97 6:29p Chris
*
* 17 3/24/97 3:50p Chris
* Removed some annoying, but informative physics info.
*
* 16 3/24/97 3:27p Chris
* Fixed some corner problems
*
* 15 3/24/97 11:43a Chris
*
* 14 3/21/97 7:08p Chris
* Working on rewritting FVI and Physics
*
* 13 3/20/97 6:26p Chris
*
* 12 3/20/97 6:18p Chris
*
* 11 3/20/97 6:13p Chris
*
* 10 3/20/97 6:06p Chris
*
* 9 3/17/97 7:36p Chris
* Made it easier to hit objects... :)
*
* 8 3/17/97 11:55a Chris
* Added more debug info.
*
* 7 3/14/97 12:18p Chris
* Tweak physics and remove braking for now.
*
* 6 3/13/97 1:17p Chris
* Incremental improvements...
*
* 5 3/12/97 6:31p Chris
* Alpha 1.0 of player "flying" in the mine
*
* 4 3/07/97 7:01p Chris
* Segments now have perfect edges and corners :)
*
* 3 3/03/97 1:03p Chris
*
* 2 3/03/97 5:52a Chris
* Pre-alpha .01
*
* 1 3/03/97 3:25a Chris
*
* $NoKeywords: $
*/
#include <cmath>
#include <cstring>
#include "3d.h"
#include "collide.h"
#include "doorway.h"
#include "log.h"
#include "findintersection.h"
#include "physics.h"
#include "player.h"
#include "polymodel.h"
#include "pserror.h"
#include "renderer.h"
#include "room.h"
#include "terrain.h"
#include "weapon.h"
#ifndef NED_PHYSICS
#include "gametexture.h"
#include "rtperformance.h" // Debug performance includes (do nothing in final release)
#endif
int FVI_counter;
int FVI_room_counter;
//------------------------------------------------------------------------------------------
// Defines and globals for fvi_FindIntersection
//------------------------------------------------------------------------------------------
#define MAX_CELLS_VISITED (TERRAIN_DEPTH * TERRAIN_WIDTH) // Maximum terrain cells visited in one fvi call
bool FVI_always_check_ceiling = false;
// This doesn't really belong here, but I don't know where else to put it.
float Ceiling_height = MAX_TERRAIN_HEIGHT;
// Bit fields for quick 'already-checked' checking
static uint8_t
fvi_visit_list[MAX_ROOMS / 8 + 1]; // This bit-field provides a fast check if a mine segment has been visited
static uint8_t fvi_terrain_visit_list[(TERRAIN_DEPTH * TERRAIN_WIDTH) / 8 +
1]; // This bit-field provides a fast check if a terrain segment has been visited
static uint8_t
fvi_terrain_obj_visit_list[(TERRAIN_DEPTH * TERRAIN_WIDTH) / 8 +
1]; // This bit-field provides a fast check if a terrain segment has been visited
// The number rooms and terrain cells that this fvi call visited.
static int fvi_num_rooms_visited;
static int fvi_num_cells_visited;
static int fvi_num_cells_obj_visited;
// Should we do a terrain check. This flag exists because if we do a terrain check, it always does a full check. So,
// we only have to do it once.
static bool f_check_terrain;
static bool fvi_zero_rad;
// Unordered list of rooms and terrain cells that this fvi call visited.
// DAJ changed to ushorts to save memory
static uint16_t fvi_rooms_visited[MAX_ROOMS]; // This should be a small number (100 to 1000)
static uint16_t fvi_cells_visited[MAX_CELLS_VISITED]; // Use this so that we do not have to use 256x256 elements
static uint16_t fvi_cells_obj_visited[MAX_CELLS_VISITED];
// Fvi wall collision stuff
static float fvi_wall_sphere_rad;
static vector fvi_wall_sphere_offset;
static vector fvi_wall_sphere_p0;
static vector fvi_wall_sphere_p1;
static float fvi_anim_sphere_rad;
static vector fvi_anim_sphere_offset;
static vector fvi_anim_sphere_p0;
static vector fvi_anim_sphere_p1;
// Fvi information pointers.
fvi_info *fvi_hit_data_ptr;
fvi_query *fvi_query_ptr;
// Best collision's distance
float fvi_collision_dist;
// AABB for the movement
static vector fvi_max_xyz;
static vector fvi_min_xyz;
static vector fvi_movement_delta;
// AABB for the movement
static vector fvi_wall_max_xyz;
static vector fvi_wall_min_xyz;
// CHRISHACK -- Do we still need this????
int fvi_curobj;
int fvi_moveobj;
// Recorded faces
fvi_face_room_list Fvi_recorded_faces[MAX_RECORDED_FACES];
int Fvi_num_recorded_faces = 0;
//------------------------------------------------------------------------------------------
// Some function def's
//------------------------------------------------------------------------------------------
static int do_fvi_terrain();
static int fvi_room(int room_index, int from_portal, int room_obj = -1);
static void do_fvi_rooms(int initial_room_index);
/// Find the point on the specified plane where the line intersects.
/// - returns: true if point found, false if line parallel to plane.
/// - parameter new_pnt: is the found point on the plane.
/// - parameter plane_pnt: describe the plane.
/// - parameter plane_norm: describe the plane.
/// - parameter p0: are the ends of the line.
/// - parameter p1: are the ends of the line.
///
/// Assumes that the initial point is not intersecting the plane.
static inline int find_plane_line_intersection(vector *intp, vector *colp, vector *plane_pnt, const vector *plane_norm,
const vector *p0, const vector *p1, float rad);
static bool IsPointInCylinder(vector *normal, vector *cylinder_pnt, vector *edir, float elen, const float rad,
const vector *pnt, vector *mdir, bool *f_collide);
//! check if a sphere intersects a face -- this can be optimized (only need 2d stuff after rotation)
static int check_vector_to_cylinder(vector *colp, vector *intp, float *col_dist, vector *wall_norm, const vector *p0,
const vector *p1, float rad, vector *ep0, vector *ep1);
//! check if a sphere intersects a face.
static int check_sphere_to_face(vector *colp, vector *intp, float *col_dist, vector *wall_norm, const vector *p0,
const vector *p1, vector *face_normal, int nv, float rad, vector **vertex_ptr_list);
static void fvi_rooms_objs(void);
static int obj_in_list(int objnum, int *obj_list);
static void make_trigger_face_list(int last_sim_faces);
static bool PhysPastPortal(const room *rp, portal *pp);
//------------------------------------------------------------------------------------------
// FVI FUNCTIONS
//------------------------------------------------------------------------------------------
void InitFVI() {
memset(fvi_terrain_visit_list, 0, (TERRAIN_DEPTH * TERRAIN_WIDTH) / 8 + 1);
memset(fvi_terrain_obj_visit_list, 0, (TERRAIN_DEPTH * TERRAIN_WIDTH) / 8 + 1);
memset(fvi_visit_list, 0, MAX_ROOMS / 8 + 1);
}
// find the point on the specified plane where the line intersects
// returns true if point found, false if line parallel to plane
// new_pnt is the found point on the plane
// plane_pnt & plane_norm describe the plane
// p0 & p1 are the ends of the line
// Assumes that the initial point is not intersecting the plane
inline int find_plane_line_intersection(vector *intp, vector *colp, vector *plane_pnt, const vector *plane_norm,
const vector *p0, const vector *p1, float rad) {
vector line_vec; // Vector from p0 to p1
vector point_plane_vec; // Vector from p0 to a point on the plane
float proj_dist_line; // Distance projection of line onto the plane normal
float proj_dist_point_plane; // Distance of the object from the plane
ASSERT(intp != nullptr && plane_pnt != nullptr && colp != nullptr && plane_norm != nullptr && p0 != nullptr &&
p1 != nullptr && rad >= 0.0);
// Line direction
line_vec = *p1 - *p0;
// Compute the distance to the plane and the distance the line travels in the direction of the normal
// Negative because if the object is moving toward the plane, it is moving in the opposite direction of the normal
proj_dist_line = (*plane_norm * line_vec);
if (proj_dist_line >= 0.0f)
return 0;
// Vector from p0 to a point on the plane
point_plane_vec = *plane_pnt - *p0;
proj_dist_point_plane = (*plane_norm * point_plane_vec);
// Throw out any sphere who's centerpoint is initially behind the face
if (proj_dist_point_plane > 0.0)
return 0;
// Use the distance from the edge of the sphere to the plane. If the new proj_dist_point_plane is
// negative, then the sphere pokes thru the edge at the initial position
proj_dist_point_plane += rad;
if (proj_dist_point_plane > 0.0 && proj_dist_line < 0.0) {
*intp = *p0;
*colp = *intp + *plane_norm * (-rad + proj_dist_point_plane);
return 1;
}
// cannot intersect wall if we are more than a rad away (closest point check)
if (proj_dist_point_plane <= proj_dist_line) {
return 0;
}
// If we are moving almost parallal to the plane, then make sure we are a rad away form it
// I picked .00000001 from my head. It would be pretty parallel of a pretty short movement and
// the linear combination below might not product a nice answer
if (fabs(proj_dist_line) <= 0.00000000001) {
float plane_dist;
plane_dist = (*p1 - *plane_pnt) * *plane_norm;
if (plane_dist >= rad)
return 0;
*intp = *p1 + (rad - plane_dist) * (*plane_norm);
// Make sure the computed new position is not behind the wall.
ASSERT((*intp - *plane_pnt) * *plane_norm >= -0.01);
} else {
// The intersection of the line and the plane is a simple linear combination
*intp = *p0 + (proj_dist_point_plane / proj_dist_line) * line_vec;
}
// Make sure the computed new position is not colliding with the wall.
// ASSERT((*intp - *plane_pnt) * *plane_norm >= rad);
// Collision point is a rad. closer in the direction of the normal
*colp = *intp + *plane_norm * -rad;
return 1;
}
struct vec2d {
float i, j;
};
// given largest componant of normal, return i & j
// if largest componant is negative, swap i & j
static const int ij_table[3][2] = {
{2, 1}, // pos x biggest
{0, 2}, // pos y biggest
{1, 0}, // pos z biggest
};
// intersection types
#define IT_NONE 0 // doesn't touch face at all
#define IT_FACE 1 // touches face
#define IT_EDGE 2 // touches edge of face
#define IT_POINT 3 // touches vertex
// see if a point in inside a face by projecting into 2d
uint32_t check_point_to_face(vector *colp, vector *face_normal, int nv, vector **vertex_ptr_list) {
vector_array *colp_array; // Axis-independent version of the collision point
vector_array *norm; // Axis-independent version of the plane's normal
vector t; // Temporary vector that holds the magnatude of the normal's x,y,z components (ABS)
int biggest; // Index of the largest of the three components (0-x, 1-y, 2-z) Axis to ignore :)
int i, j, edge; // Index for i-axis, Index for j-axis, and the current edge
uint32_t edgemask; // Bit-field for which side we are outside of
float check_i, check_j; // (i,j) checkpoint for 2d in/out test
vector_array *v0, *v1; // Vertices of the current line segment in the 2d in/out check loop
// Lets look at these vectors as arrays :)
norm = (vector_array *)face_normal;
colp_array = (vector_array *)colp;
// now do 2d check to see if point is in side
// Get x,y,z components of the normal and put them in array form (so we can pick any two for i,j)
t.x = fabs(norm->xyz[0]);
t.y = fabs(norm->xyz[1]);
t.z = fabs(norm->xyz[2]);
// Determine which axis will be normal to the plane the points are projected onto
if (t.x > t.y)
if (t.x > t.z)
biggest = 0;
else
biggest = 2;
else if (t.y > t.z)
biggest = 1;
else
biggest = 2;
// For a plane with a normal that is in the opposite direction of the axis,
// we should circle the other direction -- i.e. always circle in clockwise direction with normal (left-handed)
if (norm->xyz[biggest] > 0) {
i = ij_table[biggest][0];
j = ij_table[biggest][1];
} else {
i = ij_table[biggest][1];
j = ij_table[biggest][0];
}
// now do the 2d problem in the i,j plane
// Get the i,j check point
check_i = colp_array->xyz[i];
check_j = colp_array->xyz[j];
// Do a simple 2d cross-product between each line segment and the start point to the check point
// Go in a clockwise direction, if determinant is negative then point is outside of this multi-
// side polygon. :) Only works for concave polygons.
for (edge = edgemask = 0; edge < nv; edge++) {
vec2d edgevec, checkvec;
float d;
// v0 = (vector_array *)&Vertices[vertex_list[facenum*3+edge]];
// v1 = (vector_array *)&Vertices[vertex_list[facenum*3+((edge+1)%nv)]];
v0 = (vector_array *)vertex_ptr_list[edge];
v1 = (vector_array *)vertex_ptr_list[(edge + 1) % nv];
edgevec.i = v1->xyz[i] - v0->xyz[i];
edgevec.j = v1->xyz[j] - v0->xyz[j];
checkvec.i = check_i - v0->xyz[i];
checkvec.j = check_j - v0->xyz[j];
d = checkvec.i * edgevec.j - checkvec.j * edgevec.i;
if (d < 0) // we are outside of triangle
edgemask |= (1 << edge);
}
return edgemask;
}
// decide if it's close enough to hit
// determine if and where a vector intersects with a sphere
// vector defined by p0,p1
// if there is an intersection this function returns 1, fills in intp, and col_dist else it returns 0
// NOTE: Caller should account for the radius of the vector (i.e. no rad. for the vector is passed
// to this function -- the 2 radii are additive to it is trial and it saves 1 parameter
int check_vector_to_sphere_1(vector *intp, float *col_dist, const vector *p0, const vector *p1, vector *sphere_pos,
float sphere_rad, bool f_correcting, bool f_init_collisions) {
vector line_vec; // Vector direction of line from p0 to p1
vector normalized_line_vec; // Normalized line vector
float mag_line; // Length of the line
vector point_to_center_vec; // Vector from p0 to the center of the sphere
vector closest_point; // Location the sphere's centerpoint parallel projected onto the line
float closest_point_dist; // Distance from p0 to the closest_point
float closest_mag_to_center; // Distance from the clostest_point to the center of the sphere
float shorten; // How much to subtract from the closest_point_dist to get the actual intersection
// point
ASSERT(sphere_rad > 0.0);
// Get the vectors as usual
line_vec = *p1 - *p0;
point_to_center_vec = *sphere_pos - *p0;
if (line_vec * point_to_center_vec <= 0.0f)
return 0;
// Get the magnitude and direction of the line vector
normalized_line_vec = line_vec;
mag_line = vm_NormalizeVector(&normalized_line_vec);
// Compute the location of the point on the line that is perpendicular to the center of the sphere
closest_point_dist = normalized_line_vec * point_to_center_vec;
// We check for an initial hit, so if closest_point is negative distance, it was a miss (think about it)
// Otherwise, make sure it is not any farther than would for a collision to happen
if (closest_point_dist < 0.0 || closest_point_dist >= mag_line + sphere_rad)
return 0;
// Is the initial p0 position an intersection? If so, warn us and collide immediately.
if (point_to_center_vec * point_to_center_vec < sphere_rad * sphere_rad) {
if (f_correcting) {
/*
// chrishack
mprintf(0, "FVI WARNING: Start point is inside of a checked sphere %f %f\n",
point_to_center_vec * point_to_center_vec,
sphere_rad * sphere_rad);
*/
// chrishack this movement intersection fix is a hack... How do we do correct cylinder/vector interestion?
vector n_ptc = point_to_center_vec;
vm_NormalizeVector(&n_ptc);
*intp =
*p0 - n_ptc * (sphere_rad - (float)sqrt(sphere_rad * sphere_rad - point_to_center_vec * point_to_center_vec));
*col_dist = 0.0;
return 1;
} else if (f_init_collisions) {
*intp = *p0;
*col_dist = 0.0;
return 1;
} else {
// If not correcting, ignore initial point collisions, as they make no sense.
return 0;
}
}
closest_point = *p0 + closest_point_dist * normalized_line_vec;
closest_mag_to_center = vm_VectorDistance(&closest_point, sphere_pos);
// We are not moving close enough to collide with the circle
if (closest_mag_to_center >= sphere_rad)
return 0;
// Pathagorithm Theorom -- the radius is the hypothenus, the other two sides are the distance
// from the point to the line, and the amount we should subtract from the line to account
// for the sphere overlapping the line at the closest approach point
shorten = sqrt(sphere_rad * sphere_rad - closest_mag_to_center * closest_mag_to_center);
*col_dist = closest_point_dist - shorten;
if (*col_dist > mag_line)
return 0;
// Actual collision distance
*intp = *p0 + *col_dist * normalized_line_vec;
// Actual collision point
return 1;
}
bool IsPointInCylinder(vector *normal, vector *cylinder_pnt, vector *edir, float elen, const float rad,
const vector *pnt, vector *mdir, bool *f_collide) {
float plen = (*pnt - *cylinder_pnt) * *edir;
if (plen < 0.0f || plen > elen) {
return false;
}
vector newp = *cylinder_pnt + *edir * plen;
*normal = *pnt - newp;
if (vm_NormalizeVector(normal) >= rad) {
return false;
}
if (*normal * *mdir >= 0.0f)
*f_collide = false;
else
*f_collide = true;
return true;
}
// check if a sphere intersects a face -- this can be optimized (only need 2d stuff after rotation)
int check_vector_to_cylinder(vector *colp, vector *intp, float *col_dist, vector *wall_norm, const vector *p0,
const vector *p1, float rad, vector *ep0, vector *ep1) {
matrix edge_orient;
vector po0, po1;
vector edgevec = *ep1 - *ep0;
vector mvec;
vector closest_pnt;
float edge_len;
float dist;
float vector_len;
float dist_from_origin;
float dist_to_intersection;
int i;
int valid_hit = 0;
vector mvec3d;
float vector_len3d;
float t[4];
vector ivertex[4];
int valid_t[4];
float cole_dist[4];
vector inte[4];
mvec3d = *p1 - *p0;
vector_len3d = vm_NormalizeVector(&mvec3d);
edge_len = vm_NormalizeVector(&edgevec);
vector init_normal;
bool f_init_collide;
if (!IsPointInCylinder(&init_normal, ep0, &edgevec, edge_len, rad, p0, &mvec3d, &f_init_collide)) {
vm_VectorToMatrix(&edge_orient, &edgevec, nullptr, nullptr);
po0 = (*p0 - *ep0) * edge_orient;
po1 = (*p1 - *ep0) * edge_orient;
po0.z = po1.z = 0.0;
mvec = po1 - po0;
vector_len = vm_NormalizeVector(&mvec);
dist = -(mvec * po0);
closest_pnt = po0 + dist * mvec;
// ASSERT(!(closest_pnt.x == 0.0 && closest_pnt.y == 0.0 && closest_pnt.z == 0)); -- why does this matter?
dist_from_origin = vm_GetMagnitude(&closest_pnt);
if (dist_from_origin >= rad)
return 0;
dist_to_intersection = sqrt(rad * rad - dist_from_origin * dist_from_origin);
t[0] = (dist + dist_to_intersection) / vector_len; // (0.0 to 1.0) is on line
if (t[0] >= 0.0 && t[0] <= 1.0) {
valid_t[0] = 1;
} else {
valid_t[0] = 0;
}
t[1] = (dist - dist_to_intersection) / vector_len; // (0.0 to 1.0) is on line
if (t[1] >= 0.0 && t[1] <= 1.0) {
valid_t[1] = 1;
} else {
valid_t[1] = 0;
}
for (i = 0; i < 2; i++) {
float t_edge;
if (valid_t[i]) {
ivertex[i] = *p0 + mvec3d * (vector_len3d * t[i]);
t_edge = ((ivertex[i] - *ep0) * edgevec) / edge_len;
if (t_edge >= 0.0 && t_edge <= 1.0) {
cole_dist[i] = vector_len3d * t[i];
inte[i] = *ep0 + ((ivertex[i] - *ep0) * edgevec) * edgevec;
valid_hit = 1;
/// mprintf(0, "%f,%f,%f to %f,%f, %f\n", XYZ(p0), XYZ(p1));
} else {
valid_t[i] = 0;
}
}
}
vector d_vec;
// check end spheres
if (check_vector_to_sphere_1(&ivertex[2], &cole_dist[2], p0, p1, ep0, rad, false, true)) {
t[2] = cole_dist[2] / vector_len3d;
valid_t[2] = 1;
valid_hit = 1;
// mprintf(0, "Sphere %f,%f,%f to %f,%f, %f\n", XYZ(p0), XYZ(p1));
d_vec = *ep1 - ivertex[2];
vm_NormalizeVector(&d_vec);
inte[2] = ivertex[2] + rad * (d_vec);
} else {
valid_t[2] = 0;
}
if (check_vector_to_sphere_1(&ivertex[3], &cole_dist[3], p0, p1, ep1, rad, false, true)) {
t[3] = cole_dist[3] / vector_len3d;
valid_t[3] = 1;
valid_hit = 1;
d_vec = *ep1 - ivertex[3];
vm_NormalizeVector(&d_vec);
inte[3] = ivertex[3] + rad * (d_vec);
} else {
valid_t[3] = 0;
}
if (valid_hit == 0)
return 0;
int best_hit_index = -1;
for (i = 0; i < 4; i++) {
if (valid_t[i]) {
if (best_hit_index == -1 || cole_dist[i] < cole_dist[best_hit_index]) {
best_hit_index = i;
}
}
}
// if(best_hit_index < 2)
*colp = inte[best_hit_index];
*intp = ivertex[best_hit_index];
*col_dist = cole_dist[best_hit_index];
*wall_norm = *intp - *colp;
vm_NormalizeVector(wall_norm);
// mprintf(0, "We hit at %f,%f,%f \nwith %f,%f,%f on face\n", XYZ(intp), XYZ(colp));
return 1;
} else {
if (f_init_collide) {
*col_dist = 0.0f;
*wall_norm = init_normal;
*colp = *p0 - init_normal * rad;
*intp = *p0;
return 1;
} else {
return 0;
}
}
}
/*
int check_vector_to_cylinder(vector *colp, vector *intp, float *col_dist, vector *wall_norm, vector *p0, vector *p1,
float rad, vector *ep0, vector *ep1)
{
int i;
float s;
float t;
float pmag;
vector init_normal;
bool f_hit = false;
vector mdir = *p1 - *p0;
float mlen = vm_NormalizeVector(&mdir);
vector edir = *ep1 - *ep0;
float elen = vm_NormalizeVector(&edir);
bool f_init_collide;
float cdist; // Closest dist
vector perp = (mdir ^ edir); // Determines the normalized perp to both lines
if(perp == Zero_vector)
goto check_ends; // We are moving parallal to the cylinder (only end collisions are possible)
pmag = vm_NormalizeVector(&perp);
ASSERT(pmag != 0.0);
vector brbc = *p0 - *ep0;
cdist = fabs((brbc) * perp); // Closest distance
if(cdist >= rad) // If the closest point is a more than a rad away, no hit
return 0;
// Check for an initial collision
if(!IsPointInCylinder(&init_normal, ep0, &edir, elen, rad, p0, &mdir, &f_init_collide))
{
t = (((brbc) ^ edir) * perp)/pmag;
vector o = perp ^ edir;
vm_NormalizeVector(&o);
s = fabs(sqrt(rad * rad - pmag * pmag)/(mdir * o));
vector cyl_pnt[2];
vector cyl_norm[2];
// Determine the 2 potential hitpoint
cyl_pnt[0] = *p0 + (t - s) * mdir;
cyl_pnt[1] = *p0 + (t + s) * mdir;
// Determine the 2 potential hit normals
for(i = 0; i < 2; i++)
{
vector hb = cyl_pnt[i] - *ep0;
cyl_norm[i] = (hb - (hb * edir) * edir)/rad;
vm_NormalizeVector(&cyl_norm[i]); // Accounts for fp round off. - probably not necessary
}
bool f_valid[2];
f_valid[0] = f_valid[1] = true;
// Determine if points are on the valid
for(i = 0; i < 2; i++)
{
if(f_valid[i])
{
if(cyl_norm[i] * mdir >= 0.0f) // Is it opposite the direction of motion
{
f_valid[i] = false;
}
}
if(f_valid[i]) // Is it on the cylinder
{
float proj = (cyl_pnt[i] - *ep0) * edir;
if(proj < 0.0 || proj > elen)
{
f_valid[i] = false;
}
}
if(f_valid[i]) // Is it on the movement path
{
float proj = (cyl_pnt[i] - *p0) * mdir;
if(proj < 0.0 || proj > mlen)
{
f_valid[i] = false;
}
}
// A real collision :) Update all the collision properties
if(f_valid[i])
{
// Determine the collision distance
float new_dist = vm_VectorDistance(p0, &cyl_pnt[i]);
*col_dist = new_dist;
*wall_norm = cyl_norm[i];
*intp = cyl_pnt[i];
*colp = cyl_pnt[i] - cyl_norm[i] * rad;
f_hit = 1;
}
}
check_ends:
vector end_pnt;
if(f_hit)
{
end_pnt = *intp;
}
else
{
end_pnt = *p1;
}
// decide if it's close enough to hit
// determine if and where a vector intersects with a sphere
// vector defined by p0,p1
// if there is an intersection this function returns 1, fills in intp, and col_dist else it returns 0
// NOTE: Caller should account for the radius of the vector (i.e. no rad. for the vector is passed
// to this function -- the 2 radii are additive to it is trial and it saves 1 parameter
if(check_vector_to_sphere_1(intp, col_dist, p0, &end_pnt, ep0, rad, false, true))
{
f_hit = 1;
}
if(f_hit)
{
end_pnt = *intp;
}
else
{
end_pnt = *p1;
}
if(check_vector_to_sphere_1(intp, col_dist, p0, &end_pnt, ep0, rad, false, true))
{
f_hit = 1;
}
return f_hit;
}
else
{
if(f_init_collide)
{
*col_dist = 0.0f;
*wall_norm = init_normal;
*colp = *p0 - init_normal * rad;
*intp = *p0;
return 1;
}
else
{
return 0;
}
}
}
*/
// check if a sphere intersects a face
int check_sphere_to_face(vector *colp, vector *intp, float *col_dist, vector *wall_norm, const vector *p0,
const vector *p1, vector *face_normal, int nv, float rad, vector **vertex_ptr_list) {
uint32_t edgemask;
ASSERT(nv > 0 && nv <= 32); // otherwise, we overflow the edgemask -- if we hit this we need to make edgemask a long
// long and adjust the other functions accordingly
// now do 2d check to see if point is inside the face (if so, we are done)
edgemask = check_point_to_face(colp, face_normal, nv, vertex_ptr_list);
// If we are inside edgemask is 0, we hit the face.
if (edgemask == 0) {
// mprintf(0, "CSTF Hit Face\n");
*col_dist = vm_VectorDistance(p0, intp);
*wall_norm = *face_normal;
return IT_FACE;
} else {
// Although the plane collision point is not in the face, we might hit an edge.
// If the checkpoint collides with the edge of a face, it could
// go a little farther before hitting anything
vector *v0, *v1;
int edgenum;
// If we have no radius we could only hit the face and not an edge or point
if (rad == 0.0)
return IT_NONE;
int f_hit = 0;
vector c_end = *p1;
// get verts for edge we're behind
for (edgenum = 0; edgenum < nv; edgenum++) {
if (edgemask & 1) {
v0 = vertex_ptr_list[edgenum];
v1 = vertex_ptr_list[(edgenum + 1) % nv];
if (check_vector_to_cylinder(colp, intp, col_dist, wall_norm, p0, &c_end, rad, v0, v1)) {
c_end = *intp;
f_hit = 1;
}
}
edgemask = edgemask >> 1;
}
return f_hit;
} /* checkvec = *p0 - *v0;
edgevec = *v1 - *v0;
edgelen = vm_NormalizeVector(&edgevec);
cur_dist = edgevec * checkvec;
closest_point = *v0 + cur_dist * edgevec;
// See if the sphere intersects the edge of the face
if(!check_vector_to_sphere_1(intp, col_dist, p0, p1, &closest_point, rad, 1)) return IT_NONE;
checkvec = *intp - *v0;
cur_dist = edgevec * checkvec;
if(cur_dist >= 0 && cur_dist <= edgelen) {
// mprintf(0, "Hit edge\n");
*wall_norm = *intp - closest_point;
vm_NormalizeVector(wall_norm);
*colp = *intp + (-rad) * *wall_norm;
return IT_EDGE;
}
// Look to see if there is a point collision
else if(cur_dist < 0) closest_point = *v0;
else closest_point = *v1;
if(!check_vector_to_sphere_1(intp, col_dist, p0, p1, &closest_point, rad, 1)) return IT_NONE;
// mprintf(0, "Hit point\n");
*wall_norm = *intp - closest_point;
vm_NormalizeVector(wall_norm);
*colp = *intp + (-rad) * *wall_norm;
return IT_POINT;
}*/
}
// returns true if line intersects with face. fills in newp with intersection
// point on plane, whether or not line intersects side
// facenum determines which of four possible faces we have
// note: the seg parm is temporary, until the face itself has a point field
int check_line_to_face(vector *newp, vector *colp, float *col_dist, vector *wall_norm, const vector *p0,
const vector *p1, vector *face_normal, vector **vertex_ptr_list, const int nv, const float rad) {
int f_pli; // Flag for if a plane that defines the face intersects with the line
int vertnum = 0;
vector *test = vertex_ptr_list[0];
int i;
ASSERT(newp != nullptr && p0 != 0 && p1 != nullptr && rad >= 0.0);
// This is so we always use the same vertex
for (i = 1; i < nv; i++) {
if (test > vertex_ptr_list[i]) {
test = vertex_ptr_list[i];
vertnum = i;
}
}
// Determine the intersection point between the plane(of the face) and the line
// This point is the center of the circle (not the edge)
f_pli = find_plane_line_intersection(newp, colp, vertex_ptr_list[vertnum], face_normal, p0, p1, rad);
if (!f_pli)
return IT_NONE;
// This is the edge point where the actual intersection with the plane is occuring
// *colp = *newp;
// if (rad != 0.0)
// *colp += *face_normal*(-rad);
// mprintf(0, "Check line to face: segment %d, side %d\n", seg - Segments, side);
// We know that we hit the plane, but did we hit the face (in bounds)
return check_sphere_to_face(colp, newp, col_dist, wall_norm, p0, p1, face_normal, nv, rad, vertex_ptr_list);
}
// chrishack -- check this later
// computes the parameters of closest approach of two lines
// fill in two parameters, t0 & t1. returns 0 if lines are parallel, else 1
bool check_line_to_line(float *t1, float *t2, vector *p1, vector *v1, vector *p2, vector *v2) {
matrix det;
float d, cross_mag2; // mag squared cross product
det.rvec = *p2 - *p1;
det.fvec = *v1 ^ *v2; // (crossproduct)
cross_mag2 = det.fvec * det.fvec;
if (cross_mag2 == 0.0)
return false; // lines are parallel
det.uvec = *v2;
d = calc_det_value(&det);
*t1 = d / cross_mag2;
det.uvec = *v1;
d = calc_det_value(&det);
*t2 = d / cross_mag2;
return true; // found point
}
// determine if a vector intersects with an object
// if no intersects, returns 0, else fills in intp and returns dist
int check_vector_to_object(vector *intp, float *col_dist, vector *p0, vector *p1, float rad, object *still_obj,
object *fvi_obj) {
float still_size;
vector still_pos = still_obj->pos;
float total_size;
int fvi_objnum = fvi_query_ptr->thisobjnum;
if ((still_obj->flags & OF_POLYGON_OBJECT) && still_obj->type != OBJ_POWERUP && still_obj->type != OBJ_WEAPON &&
still_obj->type != OBJ_DEBRIS && still_obj->type != OBJ_ROOM && still_obj->type != OBJ_PLAYER) {
still_size = Poly_models[still_obj->rtype.pobj_info.model_num].anim_size;
still_pos += still_obj->anim_sphere_offset;
} else {
still_size = still_obj->size;
}
// chrishack -- why?
// if (obj->type == OBJ_ROBOT && Robot_info[obj->id].attack_type)
// size = (size*3)/4;
// if obj is player, and bumping into other player or a weapon of another coop player, reduce radius
// if (obj->type == OBJ_PLAYER &&
// ((otherobj->type == OBJ_PLAYER) ||
// ((Game_mode&GM_MULTI_COOP) && otherobj->type == OBJ_WEAPON &&
// otherobj->ctype.laser_info.parent_type
//== OBJ_PLAYER))) size = size/2;
// This accounts for relative position vs. relative velocity
if (fvi_objnum != -1 && still_obj->movement_type == MT_PHYSICS && Objects[fvi_objnum].movement_type == MT_PHYSICS) {
if (still_obj->type != OBJ_POWERUP && Objects[fvi_objnum].type != OBJ_POWERUP) {
if ((still_pos - Objects[fvi_objnum].pos) *
(still_obj->mtype.phys_info.velocity - Objects[fvi_objnum].mtype.phys_info.velocity) >=
0) {
#ifndef NED_PHYSICS
#ifdef _DEBUG
if (Physics_player_verbose) {
if (Player_object == &Objects[fvi_objnum]) {
LOG_DEBUG.printf("FVI: Earily exit on %d", OBJNUM(still_obj));
}
}
#endif
#endif
return 0;
}
}
}
total_size = still_size + rad;
if (total_size <= 0.0f) {
#ifdef _DEBUG
if (fvi_objnum >= 0)
LOG_DEBUG.printf("Get Chris: type %d and type %d are zero radius", still_obj->type, Objects[fvi_objnum].type);
else
LOG_DEBUG.printf("Get Chris: A non-object tried to hit a zero radii object of type %d", still_obj->type);
#endif
return 0;
}
// Account for the radius of the vector.
return check_vector_to_sphere_1(intp, col_dist, p0, p1, &still_pos, total_size, false, true);
}
inline void compute_movement_AABB(void) {
const vector delta_movement = fvi_hit_data_ptr->hit_pnt - *fvi_query_ptr->p0;
fvi_min_xyz = fvi_max_xyz = *fvi_query_ptr->p0;
if (delta_movement.x > 0.0f)
fvi_max_xyz.x += delta_movement.x;
else
fvi_min_xyz.x += delta_movement.x;
if (delta_movement.y > 0.0f)
fvi_max_xyz.y += delta_movement.y;
else
fvi_min_xyz.y += delta_movement.y;
if (delta_movement.z > 0.0f)
fvi_max_xyz.z += delta_movement.z;
else
fvi_min_xyz.z += delta_movement.z;
fvi_wall_min_xyz = fvi_min_xyz;
fvi_wall_max_xyz = fvi_max_xyz;
if (!fvi_zero_rad) {
if (fvi_query_ptr->thisobjnum < 0) {
vector offset_vec;
offset_vec.x = fvi_query_ptr->rad;
offset_vec.y = fvi_query_ptr->rad;
offset_vec.z = fvi_query_ptr->rad;
fvi_min_xyz -= offset_vec;
fvi_max_xyz += offset_vec;
fvi_wall_min_xyz = fvi_min_xyz;
fvi_wall_max_xyz = fvi_max_xyz;
} else {
vector max_offset = Objects[fvi_query_ptr->thisobjnum].max_xyz - Objects[fvi_query_ptr->thisobjnum].pos;
vector min_offset = Objects[fvi_query_ptr->thisobjnum].min_xyz - Objects[fvi_query_ptr->thisobjnum].pos;
fvi_max_xyz += max_offset;
fvi_min_xyz += min_offset;
// if(!(Objects[fvi_query_ptr->thisobjnum].mtype.phys_info.flags & PF_POINT_COLLIDE_WALLS))
{
fvi_wall_min_xyz = fvi_min_xyz;
fvi_wall_max_xyz = fvi_max_xyz;
}
}
}
}
inline bool object_object_AABB(object *obj1, object *obj2) {
bool overlap = true;
if (obj1->max_xyz.x < obj2->min_xyz.x || obj2->max_xyz.x < obj1->min_xyz.x || obj1->max_xyz.z < obj2->min_xyz.z ||
obj2->max_xyz.z < obj1->min_xyz.z || obj1->max_xyz.y < obj2->min_xyz.y || obj2->max_xyz.y < obj1->min_xyz.y)
overlap = false;
return overlap;
}
inline bool object_movement_AABB(object *obj) {
bool overlap = true;
if (obj->max_xyz.x < fvi_min_xyz.x || fvi_max_xyz.x < obj->min_xyz.x || obj->max_xyz.z < fvi_min_xyz.z ||
fvi_max_xyz.z < obj->min_xyz.z || obj->max_xyz.y < fvi_min_xyz.y || fvi_max_xyz.y < obj->min_xyz.y)
overlap = false;
return overlap;
}
inline bool object_room_AABB(object *obj, face *room_face) {
bool overlap = true;
if (obj->max_xyz.y < room_face->min_xyz.y || room_face->max_xyz.y < obj->min_xyz.y ||
obj->max_xyz.x < room_face->min_xyz.x || room_face->max_xyz.x < obj->min_xyz.x ||
obj->max_xyz.z < room_face->min_xyz.z || room_face->max_xyz.z < obj->min_xyz.z)
overlap = false;
return overlap;
}
inline bool room_movement_AABB(face *room_face) {
bool overlap = true;
if (fvi_wall_max_xyz.y < room_face->min_xyz.y || room_face->max_xyz.y < fvi_wall_min_xyz.y ||
fvi_wall_max_xyz.x < room_face->min_xyz.x || room_face->max_xyz.x < fvi_wall_min_xyz.x ||
fvi_wall_max_xyz.z < room_face->min_xyz.z || room_face->max_xyz.z < fvi_wall_min_xyz.z)
overlap = false;
return overlap;
}
inline bool room_manual_AABB(const face *room_face, const vector *min_xyz, const vector *max_xyz) {
bool overlap = true;
if (max_xyz->y < room_face->min_xyz.y || room_face->max_xyz.y < min_xyz->y || max_xyz->x < room_face->min_xyz.x ||
room_face->max_xyz.x < min_xyz->x || max_xyz->z < room_face->min_xyz.z || room_face->max_xyz.z < min_xyz->z)
overlap = false;
return overlap;
}
#define MAX_QUICK_ROOMS 20
// Returns the number of faces that are approximately within the specified radius
int fvi_QuickDistFaceList(int init_room_index, vector *pos, float rad, fvi_face_room_list *quick_fr_list,
int max_elements) {
int num_faces = 0;
room *cur_room;
vector min_xyz, max_xyz;
int next_rooms[MAX_QUICK_ROOMS];
int highest_next_room_index;
int cur_next_room_index;
int i;
// ASSERT(quick_fr_list != NULL);
ASSERT(pos != nullptr);
ASSERT(init_room_index >= 0 && init_room_index <= Highest_room_index && Rooms[init_room_index].used != 0);
ASSERT(rad >= 0.0f);
// Quick volume
min_xyz = max_xyz = *pos;
min_xyz.x -= rad;
min_xyz.y -= rad;
min_xyz.z -= rad;
max_xyz.x += rad;
max_xyz.y += rad;
max_xyz.z += rad;
// Initially this is the only room in the list
next_rooms[0] = init_room_index;
highest_next_room_index = 0;
cur_next_room_index = 0;
// Use standard fvi list_array / bool list
fvi_visit_list[init_room_index >> 3] |= 0x01 << (init_room_index % 8);
fvi_rooms_visited[0] = init_room_index;
fvi_num_rooms_visited = 1;
while (num_faces < max_elements && cur_next_room_index <= highest_next_room_index) {
cur_room = &Rooms[next_rooms[cur_next_room_index]];
// sort shit
uint8_t msector = 0;
if (min_xyz.x <= cur_room->bbf_min_xyz.x) {
msector |= 0x01;
}
if (min_xyz.y <= cur_room->bbf_min_xyz.y) {
msector |= 0x02;
}
if (min_xyz.z <= cur_room->bbf_min_xyz.z) {
msector |= 0x04;
}
if (max_xyz.x >= cur_room->bbf_max_xyz.x) {
msector |= 0x08;
}
if (max_xyz.y >= cur_room->bbf_max_xyz.y) {
msector |= 0x10;
}
if (max_xyz.z >= cur_room->bbf_max_xyz.z) {
msector |= 0x20;
}
const int16_t num_bbf_regions = cur_room->num_bbf_regions;
int16_t *num_faces_ptr = cur_room->num_bbf;
uint8_t *bbf_val = cur_room->bbf_list_sector;
vector *region_min = cur_room->bbf_list_min_xyz;
vector *region_max = cur_room->bbf_list_max_xyz;
int16_t **bbf_list_ptr = cur_room->bbf_list;
// Do the actual wall collsion stuff here!
for (int test1 = 0; test1 < num_bbf_regions; test1++) {
if (((*bbf_val) & msector) == (*bbf_val)) {
if (region_min->x > max_xyz.x || region_min->y > max_xyz.y || region_min->z > max_xyz.z ||
region_max->x < min_xyz.x || region_max->y < min_xyz.y || region_max->z < min_xyz.z)
goto skip_region;
int16_t *cur_face_index_ptr = *bbf_list_ptr;
for (int sort_list_cur = 0; sort_list_cur < (*num_faces_ptr); sort_list_cur++) {
i = *cur_face_index_ptr;
cur_face_index_ptr++;
int portal_num;
int connect_room;
if (!room_manual_AABB(&cur_room->faces[i], &min_xyz, &max_xyz))
continue;
if (quick_fr_list != nullptr) {
if (num_faces < max_elements) {
quick_fr_list[num_faces].face_index = i;
quick_fr_list[num_faces].room_index = ROOMNUM(cur_room);
num_faces++;
} else
break;
} else
num_faces++;
cur_room->faces[i].flags |= FF_TOUCHED;
portal_num = cur_room->faces[i].portal_num;
if (portal_num >= 0) {
connect_room = cur_room->portals[portal_num].croom;
// If the conect_room is not a terrain cell and we still have a slot in the next room list...
if (connect_room >= 0 && highest_next_room_index + 1 < MAX_QUICK_ROOMS) {
ASSERT(Rooms[connect_room].used);
if ((fvi_visit_list[connect_room >> 3] & (0x01 << ((connect_room) % 8))) == 0) {
fvi_visit_list[connect_room >> 3] |= 0x01 << (connect_room % 8);
fvi_rooms_visited[fvi_num_rooms_visited++] = connect_room;
next_rooms[++highest_next_room_index] = connect_room;
}
}
}
}
}
skip_region:;
num_faces_ptr++;
bbf_val++;
region_max++;
region_min++;
bbf_list_ptr++;
}
cur_next_room_index++;
}
// Cleans up the boolean room visit list
for (i = 0; i < fvi_num_rooms_visited; i++) {
fvi_visit_list[fvi_rooms_visited[i] >> 3] = 0;
}
return num_faces;
}
// Returns the number of faces that are approximately within the specified radius
int fvi_QuickDistCellList(int init_cell_index, vector *pos, float rad, int *quick_cell_list, int max_elements) {
int num_cells = 0;
int next_y_delta;
int xstart, xend, ystart, yend;
int check_x, check_y;
int xcounter, ycounter;
int cur_node;
ASSERT(quick_cell_list != nullptr);
ASSERT(pos != nullptr);
ASSERT(init_cell_index >= 0 && init_cell_index < TERRAIN_WIDTH * TERRAIN_DEPTH);
ASSERT(rad >= 0.0f);
cur_node = init_cell_index;
// Check worst-case collisions. This includes all nodes within a radius edge of the current node
check_x = rad / TERRAIN_SIZE + 1;
check_y = rad / TERRAIN_SIZE + 1;
xstart = cur_node % TERRAIN_WIDTH - check_x;
xend = cur_node % TERRAIN_WIDTH + check_x;
ystart = cur_node / TERRAIN_WIDTH - check_y;
yend = cur_node / TERRAIN_WIDTH + check_y;
if (xstart < 0)
xstart = 0;
if (xend >= TERRAIN_WIDTH)
xend = TERRAIN_WIDTH - 1;
if (ystart < 0)
ystart = 0;
if (yend >= TERRAIN_DEPTH)
yend = TERRAIN_DEPTH - 1;
// This should be a faster iterative way to do a square with center at original position
cur_node = TERRAIN_WIDTH * ystart + xstart;
next_y_delta = TERRAIN_WIDTH - (xend - xstart) - 1;
for (ycounter = ystart; ycounter <= yend; ycounter++) {
for (xcounter = xstart; xcounter <= xend; xcounter++) {
if ((Terrain_seg[cur_node].y >= pos->y - rad) || (Terrain_seg[cur_node + TERRAIN_WIDTH + 1].y >= pos->y - rad) ||
(Terrain_seg[cur_node + 1].y >= pos->y - rad) || (Terrain_seg[cur_node + TERRAIN_WIDTH].y >= pos->y - rad)) {
quick_cell_list[num_cells++] = cur_node;
if (num_cells >= max_elements)
break;
}
cur_node += 1;
}
if (num_cells >= max_elements)
break;
cur_node += next_y_delta;
}
return num_cells;
}
int fvi_QuickDistObjectList(vector *pos, int init_room_index, float rad, int16_t *object_index_list, int max_elements,
bool f_lightmap_only, bool f_only_players_and_ais, bool f_include_non_collide_objects,
bool f_stop_at_closed_doors) {
int num_objects = 0;
int x; //, y;
vector delta;
// Quick volume
delta.x = delta.y = delta.z = rad;
fvi_min_xyz = fvi_max_xyz = *pos;
fvi_min_xyz -= delta;
fvi_max_xyz += delta;
fvi_wall_min_xyz = fvi_min_xyz;
fvi_wall_max_xyz = fvi_max_xyz;
if (ROOMNUM_OUTSIDE(init_room_index)) {
int next_y_delta;
int xstart, xend, ystart, yend;
int check_x, check_y;
int xcounter, ycounter;
int cur_node;
cur_node = CELLNUM(init_room_index);
// Check worst-case collisions. This includes all nodes within a radius edge of the current node
check_x = rad / TERRAIN_SIZE + 1;
check_y = rad / TERRAIN_SIZE + 1;
xstart = cur_node % TERRAIN_WIDTH - check_x;
xend = cur_node % TERRAIN_WIDTH + check_x;
ystart = cur_node / TERRAIN_WIDTH - check_y;
yend = cur_node / TERRAIN_WIDTH + check_y;
if (xstart < 0)
xstart = 0;
if (xend >= TERRAIN_WIDTH)
xend = TERRAIN_WIDTH - 1;
if (ystart < 0)
ystart = 0;
if (yend >= TERRAIN_DEPTH)
yend = TERRAIN_DEPTH - 1;
// This should be a faster iterative way to do a square with center at original position
cur_node = TERRAIN_WIDTH * ystart + xstart;
next_y_delta = TERRAIN_WIDTH - (xend - xstart) - 1;
for (ycounter = ystart; ycounter <= yend; ycounter++) {
for (xcounter = xstart; xcounter <= xend; xcounter++) {
// Do object stuff
int cur_obj_index = Terrain_seg[cur_node].objects;
while (cur_obj_index > -1) {
if (num_objects >= max_elements)
break;
if ((f_include_non_collide_objects) || CollisionRayResult[Objects[cur_obj_index].type] != RESULT_NOTHING) {
if (!f_only_players_and_ais || Objects[cur_obj_index].type == OBJ_PLAYER ||
Objects[cur_obj_index].ai_info) {
if (!(f_lightmap_only && (Objects[cur_obj_index].lighting_render_type != LRT_LIGHTMAPS) &&
Objects[cur_obj_index].type != OBJ_ROOM)) {
if (object_movement_AABB(&Objects[cur_obj_index]) && !(Objects[cur_obj_index].flags & OF_BIG_OBJECT)) {
object_index_list[num_objects++] = cur_obj_index;
ASSERT(num_objects < 0 || num_objects <= max_elements);
}
}
}
}
cur_obj_index = Objects[cur_obj_index].next;
}
if (num_objects >= max_elements)
break;
cur_node += 1;
}
if (num_objects >= max_elements)
break;
cur_node += next_y_delta;
}
// Do big object stuff
for (x = 0; x < Num_big_objects; x++) {
if (num_objects >= max_elements)
break;
if ((f_include_non_collide_objects) || (Objects[x].type < MAX_OBJECT_TYPES && CollisionRayResult[Objects[x].type] != RESULT_NOTHING)) {
if (!f_only_players_and_ais || Objects[x].type == OBJ_PLAYER || Objects[x].ai_info) {
if (!(f_lightmap_only && (Objects[BigObjectList[x]].lighting_render_type != LRT_LIGHTMAPS) &&
Objects[BigObjectList[x]].type != OBJ_ROOM)) {
if (object_movement_AABB(&Objects[BigObjectList[x]])) {
object_index_list[num_objects++] = BigObjectList[x];
ASSERT(num_objects < 0 || num_objects <= max_elements);
}
}
}
}
}
} else {
room *cur_room;
int next_rooms[MAX_QUICK_ROOMS];
int highest_next_room_index;
int cur_next_room_index;
int i;
ASSERT(pos != nullptr);
ASSERT(init_room_index >= 0 && init_room_index <= Highest_room_index && Rooms[init_room_index].used != 0);
ASSERT(rad >= 0.0f);
// Initially this is the only room in the list
next_rooms[0] = init_room_index;
highest_next_room_index = 0;
cur_next_room_index = 0;
// Use standard fvi list_array / bool list
fvi_visit_list[init_room_index >> 3] |= 0x01 << (init_room_index % 8);
fvi_rooms_visited[0] = init_room_index;
fvi_num_rooms_visited = 1;
while (num_objects <= max_elements && cur_next_room_index <= highest_next_room_index) {
cur_room = &Rooms[next_rooms[cur_next_room_index]];
// Do object stuff
int cur_obj_index = cur_room->objects;
while (cur_obj_index > -1) {
if (num_objects >= max_elements)
break;
if ((f_include_non_collide_objects) || CollisionRayResult[Objects[cur_obj_index].type] != RESULT_NOTHING) {
if (!f_only_players_and_ais || Objects[cur_obj_index].type == OBJ_PLAYER || Objects[cur_obj_index].ai_info) {
if (!(f_lightmap_only && (Objects[cur_obj_index].lighting_render_type != LRT_LIGHTMAPS))) {
if (object_movement_AABB(&Objects[cur_obj_index])) {
object_index_list[num_objects++] = cur_obj_index;
ASSERT(num_objects < 0 || num_objects <= max_elements);
}
}
}
}
cur_obj_index = Objects[cur_obj_index].next;
}
if (num_objects >= max_elements)
break;
if (f_stop_at_closed_doors && cur_room->flags & RF_DOOR) {
// Closed doors antenuate a lot
if (DoorwayGetPosition(cur_room) == 0.0)
goto skip_room_prop;
}
for (x = 0; x < cur_room->num_portals; x++) {
int portal_num;
int connect_room;
if (f_stop_at_closed_doors) {
if ((cur_room->portals[x].flags & PF_RENDER_FACES) &&
!(cur_room->portals[x].flags & PF_RENDERED_FLYTHROUGH) ||
(cur_room->portals[x].flags & PF_BLOCK)) {
continue;
}
}
i = cur_room->portals[x].portal_face;
if (!room_movement_AABB(&cur_room->faces[i]))
continue;
portal_num = cur_room->faces[i].portal_num;
connect_room = cur_room->portals[portal_num].croom;
// If the conect_room is not a terrain cell and we still have a slot in the next room list...
if (connect_room >= 0 && highest_next_room_index + 1 < MAX_QUICK_ROOMS) {
ASSERT(Rooms[connect_room].used);
if ((fvi_visit_list[connect_room >> 3] & (0x01 << ((connect_room) % 8))) == 0) {
fvi_visit_list[connect_room >> 3] |= 0x01 << (connect_room % 8);
fvi_rooms_visited[fvi_num_rooms_visited++] = connect_room;
ASSERT(highest_next_room_index + 1 >= 0 && highest_next_room_index + 1 < MAX_QUICK_ROOMS);
next_rooms[++highest_next_room_index] = connect_room;
}
}
}
skip_room_prop:
cur_next_room_index++;
}
// Cleans up the boolean room visit list
for (i = 0; i < fvi_num_rooms_visited; i++) {
fvi_visit_list[fvi_rooms_visited[i] >> 3] = 0;
}
}
return num_objects;
}
bool fvi_QuickRoomCheck(vector *pos, room *cur_room, bool try_again) {
vector hit_point; // where we hit
vector colp;
float cur_dist; // distance to hit point
int i;
bool f_in_room = true;
internal_try_again:
int closest_hit_type = 0;
float closest_hit_distance = 10000000.0f;
vector min_xyz;
vector max_xyz;
vector new_pos;
if (!(cur_room->used) || (cur_room->flags & RF_EXTERNAL))
return false;
new_pos = min_xyz = max_xyz = *pos;
if (!try_again) {
new_pos.x += 10000000.0f;
max_xyz.x += 10000000.0f;
} else {
new_pos.z -= 10000000.0f;
min_xyz.z -= 10000000.0f;
new_pos.y -= 10000000.0f;
min_xyz.y -= 10000000.0f;
new_pos.x -= 10000000.0f;
min_xyz.x -= 10000000.0f;
}
// mprintf(0, "Checking room %d ", ROOMNUM(cur_room));
// sort shit
uint8_t msector = 0;
if (min_xyz.x <= cur_room->bbf_min_xyz.x) {
msector |= 0x01;
}
if (min_xyz.y <= cur_room->bbf_min_xyz.y) {
msector |= 0x02;
}
if (min_xyz.z <= cur_room->bbf_min_xyz.z) {
msector |= 0x04;
}
if (max_xyz.x >= cur_room->bbf_max_xyz.x) {
msector |= 0x08;
}
if (max_xyz.y >= cur_room->bbf_max_xyz.y) {
msector |= 0x10;
}
if (max_xyz.z >= cur_room->bbf_max_xyz.z) {
msector |= 0x20;
}
const int16_t num_bbf_regions = cur_room->num_bbf_regions;
int16_t *num_faces_ptr = cur_room->num_bbf;
uint8_t *bbf_val = cur_room->bbf_list_sector;
vector *region_min = cur_room->bbf_list_min_xyz;
vector *region_max = cur_room->bbf_list_max_xyz;
int16_t **bbf_list_ptr = cur_room->bbf_list;
// Do the actual wall collsion stuff here!
for (int test1 = 0; test1 < num_bbf_regions; test1++) {
if (((*bbf_val) & msector) == (*bbf_val)) {
if (region_min->x > max_xyz.x || region_min->y > max_xyz.y || region_min->z > max_xyz.z ||
region_max->x < min_xyz.x || region_max->y < min_xyz.y || region_max->z < min_xyz.z)
goto skip_region;
int16_t *cur_face_index_ptr = *bbf_list_ptr;
for (int sort_list_cur = 0; sort_list_cur < (*num_faces_ptr); sort_list_cur++) {
i = *cur_face_index_ptr;
cur_face_index_ptr++;
vector face_normal;
vector *vertex_ptr_list[MAX_VERTS_PER_FACE];
int face_hit_type;
vector wall_norm;
int16_t count;
bool f_backface;
if (cur_room->faces[i].flags & FF_NOT_SHELL)
continue;
if (!room_manual_AABB(&cur_room->faces[i], &min_xyz, &max_xyz))
continue;
f_backface = false;
for (count = 0; count < cur_room->faces[i].num_verts; count++)
vertex_ptr_list[count] = &cur_room->verts[cur_room->faces[i].face_verts[count]];
face_normal = cur_room->faces[i].normal;
face_hit_type = check_line_to_face(&hit_point, &colp, &cur_dist, &wall_norm, pos, &new_pos, &face_normal,
vertex_ptr_list, cur_room->faces[i].num_verts, 0.0);
if (!face_hit_type) {
face_normal *= -1.0f;
for (count = 0; count < cur_room->faces[i].num_verts; count++)
vertex_ptr_list[cur_room->faces[i].num_verts - count - 1] =
&cur_room->verts[cur_room->faces[i].face_verts[count]];
face_hit_type = check_line_to_face(&hit_point, &colp, &cur_dist, &wall_norm, pos, &new_pos, &face_normal,
vertex_ptr_list, cur_room->faces[i].num_verts, 0.0);
f_backface = true;
}
// If we hit the face...
if (face_hit_type) {
if ((cur_dist <= closest_hit_distance && !f_backface) || (cur_dist < closest_hit_distance && f_backface)) {
closest_hit_distance = cur_dist;
if (f_backface)
closest_hit_type = HIT_BACKFACE;
else
closest_hit_type = HIT_WALL;
}
}
}
}
skip_region:;
num_faces_ptr++;
bbf_val++;
region_max++;
region_min++;
bbf_list_ptr++;
}
if (closest_hit_type != HIT_WALL) {
f_in_room = false;
// mprintf(0, " in room bool = %d, hit_type = %d\n", (int) f_in_room, closest_hit_type);
}
if (!f_in_room && !try_again) {
try_again = true;
f_in_room = true;
goto internal_try_again;
}
return f_in_room;
}
// Long rays are 10 segments or longer in length
#define MIN_LONG_RAY (TERRAIN_SIZE * 20.0)
inline bool is_long_xz_ray(fvi_query *fq) {
if ((fabs(fq->p0->x - fq->p1->x) > MIN_LONG_RAY) || (fabs(fq->p0->z - fq->p1->z) > MIN_LONG_RAY)) {
return true;
} else {
return false;
}
}
void check_ceiling() {
vector hit_point;
float cur_dist;
vector face_normal = {0.0, -1.0, 0.0};
vector *vertex_ptr_list[4];
vector vlist[4];
int face_hit_type;
vector wall_norm;
vector colp;
// Bail early if hitpnt is not high enough
if (fvi_query_ptr->rad + fvi_hit_data_ptr->hit_pnt.y < CEILING_HEIGHT)
return;
vlist[0].x = 0.0;
vlist[0].y = CEILING_HEIGHT;
vlist[0].z = 0.0;
vlist[1].x = TERRAIN_WIDTH * TERRAIN_SIZE;
vlist[1].y = CEILING_HEIGHT;
vlist[1].z = 0.0;
vlist[2].x = TERRAIN_WIDTH * TERRAIN_SIZE;
vlist[2].y = CEILING_HEIGHT;
vlist[2].z = TERRAIN_DEPTH * TERRAIN_SIZE;
vlist[3].x = 0.0;
vlist[3].y = CEILING_HEIGHT;
vlist[3].z = TERRAIN_DEPTH * TERRAIN_SIZE;
vertex_ptr_list[0] = &vlist[0];
vertex_ptr_list[1] = &vlist[1];
vertex_ptr_list[2] = &vlist[2];
vertex_ptr_list[3] = &vlist[3];
// Did we hit this face?
face_hit_type = check_line_to_face(&hit_point, &colp, &cur_dist, &wall_norm, fvi_query_ptr->p0,
&fvi_hit_data_ptr->hit_pnt, &face_normal, vertex_ptr_list, 4, fvi_query_ptr->rad);
if (face_hit_type) {
if (cur_dist <= fvi_collision_dist) {
if ((cur_dist < fvi_collision_dist) || !(fvi_query_ptr->flags & FQ_MULTI_POINT)) {
fvi_hit_data_ptr->num_hits = 0;
fvi_hit_data_ptr->hit_pnt = hit_point;
fvi_collision_dist = cur_dist;
compute_movement_AABB();
} else if (fvi_hit_data_ptr->num_hits == MAX_HITS) {
goto ignore_hit;
}
fvi_hit_data_ptr->hit_type[fvi_hit_data_ptr->num_hits] = HIT_CEILING;
fvi_hit_data_ptr->hit_wallnorm[fvi_hit_data_ptr->num_hits] = wall_norm;
// fvi_hit_data_ptr->hit_seg = -1; -- set in the fvi_FindIntersection function
fvi_hit_data_ptr->hit_object[fvi_hit_data_ptr->num_hits] = -1;
fvi_hit_data_ptr->hit_face[fvi_hit_data_ptr->num_hits] = 0;
fvi_hit_data_ptr->hit_face_room[fvi_hit_data_ptr->num_hits] = 0;
fvi_hit_data_ptr->hit_face_pnt[fvi_hit_data_ptr->num_hits] = colp;
fvi_hit_data_ptr->num_hits++;
}
}
ignore_hit:;
}
void make_trigger_face_list(int last_sim_faces) {
int num_real_collisions;
int x;
num_real_collisions = last_sim_faces;
ASSERT(Fvi_num_recorded_faces <= MAX_RECORDED_FACES);
for (x = last_sim_faces; x < Fvi_num_recorded_faces; x++) {
vector face_normal;
vector *vertex_ptr_list[MAX_VERTS_PER_FACE];
int face_hit_type;
vector wall_norm;
vector colp;
vector hit_point;
int16_t count;
room *cur_room = &Rooms[Fvi_recorded_faces[x].room_index];
int i = Fvi_recorded_faces[x].face_index;
float cur_dist;
for (count = 0; count < cur_room->faces[i].num_verts; count++)
vertex_ptr_list[count] = &cur_room->verts[cur_room->faces[i].face_verts[count]];
/*
mprintf(0, "FVI:In trigger %f to %f crossed %f\n",
fvi_query_ptr->p0->z,
fvi_hit_data_ptr->hit_pnt.z,
vertex_ptr_list[0]->z);
*/
face_normal = cur_room->faces[i].normal;
face_hit_type =
check_line_to_face(&hit_point, &colp, &cur_dist, &wall_norm, fvi_query_ptr->p0, &fvi_hit_data_ptr->hit_pnt,
&face_normal, vertex_ptr_list, cur_room->faces[i].num_verts, 0.0f);
if (face_hit_type) {
// mprintf(0, "FVI:hit trigger\n");
Fvi_recorded_faces[num_real_collisions].face_index = i;
Fvi_recorded_faces[num_real_collisions++].room_index = Fvi_recorded_faces[x].room_index;
}
}
if (!ROOMNUM_OUTSIDE(fvi_query_ptr->startroom) && !ROOMNUM_OUTSIDE(fvi_hit_data_ptr->hit_room)) {
int i;
for (i = 0; i < Rooms[fvi_query_ptr->startroom].num_portals; i++) {
if (Rooms[fvi_query_ptr->startroom].portals[i].croom == fvi_hit_data_ptr->hit_room) {
int j;
bool f_found = false;
for (j = 0; j < num_real_collisions; j++) {
if (Fvi_recorded_faces[j].face_index == Rooms[fvi_query_ptr->startroom].portals[i].portal_face &&
Fvi_recorded_faces[j].room_index == fvi_query_ptr->startroom) {
f_found = true;
break;
}
}
if (!f_found) {
Fvi_recorded_faces[num_real_collisions].face_index = Rooms[fvi_query_ptr->startroom].portals[i].portal_face;
Fvi_recorded_faces[num_real_collisions++].room_index = fvi_query_ptr->startroom;
}
}
}
}
Fvi_num_recorded_faces = num_real_collisions;
}
// Find out if a vector intersects with anything.
// Fills in hit_data, an fvi_info structure (see header file).
// Parms:
// p0 & startseg describe the start of the vector
// p1 the end of the vector
// rad the radius of the cylinder
// thisobjnum used to prevent an object with colliding with itself
// ingore_obj ignore collisions with this object
// check_obj_flag determines whether collisions with objects are checked
// Returns the hit_data->hit_type
#ifndef NED_PHYSICS
extern bool Tracking_FVI;
#endif
int fvi_FindIntersection(fvi_query *fq, fvi_info *hit_data, bool no_subdivision) {
int i;
object *this_obj;
int last_sim_trigger_faces;
if (fq->startroom == -1) {
return HIT_NONE;
}
#ifndef NED_PHYSICS
if (Tracking_FVI) {
LOG_DEBUG.printf("Track FVI - Ray %d, thisobjnum=%d, startroom=%d, rad=%f",
FVI_counter, fq->thisobjnum, fq->startroom, fq->rad);
}
#endif
/////////////////////////////////////////
// Debug Code
#ifdef USE_RTP
INT64 curr_time;
RTP_GETCLOCK(curr_time);
RTP_tSTARTTIME(fvi_time, curr_time);
RTP_INCRVALUE(fvi_calls, 1);
#endif
FVI_counter++;
/////////////////////////////////////////
// Setup our globals
fvi_hit_data_ptr = hit_data;
fvi_query_ptr = fq;
if (fq->thisobjnum >= 0)
this_obj = &Objects[fq->thisobjnum];
else
this_obj = nullptr;
if (fq->rad == 0.0f)
fvi_zero_rad = true;
else
fvi_zero_rad = false;
ASSERT(fq != nullptr && hit_data != nullptr);
ASSERT(std::isfinite(fq->p1->x)); // Caller wants to go to infinity! -- Not FVI's fault.
ASSERT(std::isfinite(fq->p1->y)); // Caller wants to go to infinity! -- Not FVI's fault.
ASSERT(std::isfinite(fq->p1->z)); // Caller wants to go to infinity! -- Not FVI's fault.
fvi_movement_delta = *fq->p1 - *fq->p0;
// mprintf(0, "FVI:----New search----\n");
// mprintf(0, "FVI: P0 is %f, %f, %f\n", XYZ(fq->p0));
if (fq->flags & FQ_NEW_RECORD_LIST) {
Fvi_num_recorded_faces = 0;
}
last_sim_trigger_faces = Fvi_num_recorded_faces;
if ((this_obj) && (this_obj->flags & OF_POLYGON_OBJECT) && this_obj->type != OBJ_WEAPON &&
this_obj->type != OBJ_POWERUP && this_obj->type != OBJ_DEBRIS && this_obj->type != OBJ_ROOM &&
this_obj->type != OBJ_PLAYER && fq->rad == this_obj->size) {
if (this_obj->mtype.phys_info.flags & PF_POINT_COLLIDE_WALLS) {
fvi_wall_sphere_rad = 0.0f;
fvi_wall_sphere_offset = Zero_vector;
fvi_wall_sphere_p0 = *fq->p0;
fvi_wall_sphere_p1 = *fq->p1;
} else {
fvi_wall_sphere_rad = Poly_models[this_obj->rtype.pobj_info.model_num].wall_size;
fvi_wall_sphere_offset = this_obj->wall_sphere_offset;
fvi_wall_sphere_p0 = *fq->p0 + fvi_wall_sphere_offset;
fvi_wall_sphere_p1 = *fq->p1 + fvi_wall_sphere_offset;
}
fvi_anim_sphere_rad = Poly_models[this_obj->rtype.pobj_info.model_num].anim_size;
fvi_anim_sphere_offset = this_obj->anim_sphere_offset;
fvi_anim_sphere_p0 = *fq->p0 + fvi_anim_sphere_offset;
fvi_anim_sphere_p1 = *fq->p1 + fvi_anim_sphere_offset;
} else {
if ((this_obj) && this_obj->type == OBJ_PLAYER && fq->rad == this_obj->size) {
fvi_wall_sphere_rad = fq->rad * PLAYER_SIZE_SCALAR;
if (Players[this_obj->id].flags & (PLAYER_FLAGS_DEAD | PLAYER_FLAGS_DYING))
fvi_wall_sphere_rad *= 0.5f;
fvi_wall_sphere_offset = Zero_vector;
fvi_wall_sphere_p0 = *fq->p0;
fvi_wall_sphere_p1 = *fq->p1;
} else if ((this_obj) && this_obj->mtype.phys_info.flags & PF_POINT_COLLIDE_WALLS) {
fvi_wall_sphere_rad = 0.0f;
fvi_wall_sphere_offset = Zero_vector;
fvi_wall_sphere_p0 = *fq->p0;
fvi_wall_sphere_p1 = *fq->p1;
} else {
fvi_wall_sphere_rad = fq->rad;
fvi_wall_sphere_offset = Zero_vector;
fvi_wall_sphere_p0 = *fq->p0;
fvi_wall_sphere_p1 = *fq->p1;
}
fvi_anim_sphere_rad = fq->rad;
fvi_anim_sphere_offset = Zero_vector;
fvi_anim_sphere_p0 = *fq->p0;
fvi_anim_sphere_p1 = *fq->p1;
}
fvi_num_rooms_visited = 0;
fvi_num_cells_visited = 0;
fvi_num_cells_obj_visited = 0;
f_check_terrain = true;
// Initially assume we will hit the endpoint -- Do not compute the end segment unless we actually have no collisions
hit_data->hit_pnt = *fq->p1;
hit_data->hit_room = -1;
hit_data->num_hits = 0;
hit_data->hit_type[0] = HIT_NONE;
hit_data->hit_face_room[0] = -1;
hit_data->hit_object[0] = -1;
hit_data->n_rooms = 0;
fvi_collision_dist = vm_VectorDistance(fq->p0, fq->p1) + 0.0000001f;
// Computes a axis-aligned bounding-box that encompasses the area
compute_movement_AABB();
if (ROOMNUM_OUTSIDE(fq->startroom)) {
// Subdivides long rays
if ((!no_subdivision) && is_long_xz_ray(fq)) {
// Save old pointers
fvi_info *save_fvi_hit_data_ptr = hit_data;
fvi_query *save_fvi_query_ptr = fq;
// Copy old data to new data
fvi_info fvi_new_hit_data = *hit_data;
fvi_query fvi_new_query = *fq;
// These are the new "moving" line points
vector new_p0;
vector new_p1;
// Number of whole subdivisions
int num_subdivisions = vm_VectorDistance(fq->p0, fq->p1) / MIN_LONG_RAY;
vector sub_dir; // Direction and magnitude of each subdivision
int s_hit_type = 0; // Sub-divided hit type
sub_dir = *fq->p1 - *fq->p0; // Direction of movement
vm_NormalizeVector(&sub_dir); // Normalize it
sub_dir *= MIN_LONG_RAY; // Scale it to the length of a sub-division
// Determine the first sub-division
new_p0 = *fq->p0;
new_p1 = new_p0 + sub_dir;
fvi_new_query.p0 = &new_p0;
fvi_new_query.p1 = &new_p1;
for (i = 0; i < num_subdivisions; i++) {
fvi_new_query.startroom = GetTerrainRoomFromPos(&new_p0);
// mprintf(0, "S %d F %f,%f,%f to %f,%f,%f\n", i, XYZ(&new_p0), XYZ(&new_p1));
s_hit_type = fvi_FindIntersection(&fvi_new_query, &fvi_new_hit_data, true);
fvi_new_query.flags &= (~FQ_NEW_RECORD_LIST);
if (s_hit_type != HIT_NONE) {
// mprintf(0, "Hit %d at %f, %f, %f\n", s_hit_type, XYZ(&fvi_new_hit_data.hit_pnt));
break;
}
if (!ROOMNUM_OUTSIDE(fvi_new_hit_data.hit_room))
break;
new_p0 = new_p1;
new_p1 += sub_dir;
}
// Check up to the real stopping point
if (s_hit_type == HIT_NONE) {
new_p1 = *save_fvi_query_ptr->p1;
s_hit_type = fvi_FindIntersection(&fvi_new_query, &fvi_new_hit_data, true);
}
hit_data = save_fvi_hit_data_ptr;
fq = save_fvi_query_ptr;
*hit_data = fvi_new_hit_data;
#ifdef USE_RTP
RTP_tENDTIME(fvi_time, curr_time);
#endif
return hit_data->hit_type[0];
} else
do_fvi_terrain();
} else {
ASSERT(!(Rooms[fq->startroom].flags & RF_EXTERNAL)); // If we hit this, it is not FVI's fault
// The caller to fvi has a bug
FVI_room_counter++;
// do_fvi_rooms(fq->startroom);
fvi_room(fq->startroom, -1);
ASSERT(fvi_num_rooms_visited >= 1);
}
// Check objects in rooms we visited
fvi_rooms_objs();
if (FVI_always_check_ceiling && (fq->flags & FQ_CHECK_CEILING)) {
check_ceiling();
}
// Determine hit seg.
// Only do this if not running radiosity
if (!(fq->flags & FQ_NO_RELINK)) {
if (fvi_num_rooms_visited == 1 && fvi_num_cells_visited == 0) {
hit_data->hit_room = fvi_rooms_visited[0];
} else if ((hit_data->hit_type[0] == HIT_WALL || hit_data->hit_type[0] == HIT_TERRAIN) &&
(fvi_zero_rad ||
(fvi_query_ptr->thisobjnum >= 0 &&
(Objects[fvi_query_ptr->thisobjnum].mtype.phys_info.flags & PF_POINT_COLLIDE_WALLS))) &&
(ROOMNUM_OUTSIDE(hit_data->hit_face_room[0]) ||
!(Rooms[hit_data->hit_face_room[0]].flags & RF_EXTERNAL))) {
hit_data->hit_room = hit_data->hit_face_room[0];
} else {
bool f_found_room = false;
for (i = 0; i < fvi_num_rooms_visited && !f_found_room; i++) {
if (!(Rooms[fvi_rooms_visited[i]].flags & RF_EXTERNAL))
if (fvi_QuickRoomCheck(&hit_data->hit_pnt, &Rooms[fvi_rooms_visited[i]])) {
f_found_room = true;
hit_data->hit_room = fvi_rooms_visited[i];
}
}
if (!f_found_room && fvi_num_cells_visited >= 1) {
// We must be outside
// Check the ceiling too
if (!FVI_always_check_ceiling && (fq->flags & FQ_CHECK_CEILING)) {
check_ceiling();
}
// Determine if we are within the valid terrain bounds
hit_data->hit_room = GetTerrainRoomFromPos(&hit_data->hit_pnt);
if (hit_data->hit_room == -1) {
hit_data->hit_type[0] = HIT_OUT_OF_TERRAIN_BOUNDS;
}
} else if (!f_found_room) {
// mprintf(0, "Attempting to patch\n");
for (i = 0; i < fvi_num_rooms_visited && !f_found_room; i++) {
if (!(Rooms[fvi_rooms_visited[i]].flags & RF_EXTERNAL))
if (fvi_QuickRoomCheck(&hit_data->hit_pnt, &Rooms[fvi_rooms_visited[i]]), true) {
f_found_room = true;
hit_data->hit_room = fvi_rooms_visited[i];
ASSERT(!(Rooms[hit_data->hit_room].flags & RF_EXTERNAL));
// break;
}
}
ASSERT(no_subdivision || f_found_room);
}
}
// Do the ASSERTS for FVI.
ASSERT(!(hit_data->hit_room == -1 && hit_data->hit_type[0] != HIT_OUT_OF_TERRAIN_BOUNDS));
ASSERT(!(hit_data->hit_type[0] == HIT_OBJECT && hit_data->hit_object[0] == -1));
}
// Clean up the visit list bits
for (i = 0; i < fvi_num_cells_visited; i++) {
fvi_terrain_visit_list[fvi_cells_visited[i] >> 3] = 0;
}
for (i = 0; i < fvi_num_cells_obj_visited; i++) {
fvi_terrain_obj_visit_list[fvi_cells_obj_visited[i] >> 3] = 0;
}
for (i = 0; i < fvi_num_rooms_visited; i++) {
fvi_visit_list[fvi_rooms_visited[i] >> 3] = 0;
}
if (fvi_query_ptr->flags & FQ_RECORD) {
make_trigger_face_list(last_sim_trigger_faces);
}
hit_data->hit_dist = fvi_collision_dist;
// Return the hit type
#ifdef USE_RTP
RTP_tENDTIME(fvi_time, curr_time);
#endif
return hit_data->hit_type[0];
}
int obj_in_list(int objnum, int *obj_list) {
int t;
while ((t = *obj_list) != -1 && t != objnum)
obj_list++;
return (t == objnum);
}
// new function for Mike
// note: n_segs_visited must be set to zero before this is called
int sphere_intersects_wall(vector *pnt, int segnum, float rad) {
/*
int facemask;
segment *seg;
segs_visited[n_segs_visited++] = segnum;
facemask = GetSegMasks(pnt,segnum,rad).facemask;
seg = &Segments[segnum];
if (facemask != 0) { //on the back of at least one face
int side,bit,face;
//for each face we are on the back of, check if intersected
for (side=0,bit=1;side<6 && facemask>=bit;side++) {
for (face=0;face<2;face++,bit<<=1) {
if (facemask & bit) { //on the back of this face
int face_hit_type; //in what way did we hit the face?
int num_faces,vertex_list[6];
//did we go through this wall/door?
if ((seg-Segments)==-1)
Error("segnum == -1 in sphere_intersects_wall()");
create_abs_vertex_lists(&num_faces,vertex_list,seg-Segments,side);
face_hit_type = check_sphere_to_face( pnt,&seg->sides[side],
face,((num_faces==1)?4:3),rad,vertex_list);
if (face_hit_type) { //through this wall/door
int child,i;
//if what we have hit is a door, check the adjoining seg
child = seg->children[side];
for (i=0;i<n_segs_visited && child!=segs_visited[i];i++);
if (i==n_segs_visited) { //haven't visited here yet
if (!IS_CHILD(child))
return 1;
else {
if (sphere_intersects_wall(pnt,child,rad))
return 1;
}
}
}
}
}
}
}
*/
return 0;
}
static const int bbox_edges[12][2] = {{0, 1}, {1, 2}, {2, 3}, {3, 0}, {3, 4}, {2, 5},
{5, 4}, {4, 7}, {5, 6}, {7, 6}, {7, 0}, {6, 1}};
static const int bbox_faces[6][4] = {{4, 5, 2, 3}, {7, 6, 5, 4}, {0, 1, 6, 7},
{0, 3, 2, 1}, {7, 4, 3, 0}, {1, 2, 5, 3}};
/*
bool BBoxPlaneIntersection(bool fast_exit, vector *collision_point, vector *collision_normal, object *obj, vector
*new_pos, int nv, vector **vertex_ptr_list, vector *face_normal)
{
vector plane_pnt;
vector verts[12];
vector norms[6];
poly_model *pm = &Poly_models[obj->rtype.pobj_info.model_num];
int i, j, k;
vector rel[32];
float dot[32];
vector *bbox_vertex_ptr_list[4];
int num_int_box = 0;
int num_int_poly = 0;
vector int_points_box[12];
vector int_points_poly[32];
int16_t int_faces = 0;
bool f_int_box = false;
bool f_int_poly = false;
verts[0] = (obj->orient.rvec * pm->mins.x) +
(obj->orient.uvec * pm->maxs.y) +
(obj->orient.fvec * pm->mins.z);
verts[1] = (obj->orient.rvec * pm->mins.x) +
(obj->orient.uvec * pm->mins.y) +
(obj->orient.fvec * pm->mins.z);
verts[2] = (obj->orient.rvec * pm->maxs.x) +
(obj->orient.uvec * pm->mins.y) +
(obj->orient.fvec * pm->mins.z);
verts[3] = (obj->orient.rvec * pm->maxs.x) +
(obj->orient.uvec * pm->maxs.y) +
(obj->orient.fvec * pm->mins.z);
verts[4] = (obj->orient.rvec * pm->maxs.x) +
(obj->orient.uvec * pm->maxs.y) +
(obj->orient.fvec * pm->maxs.z);
verts[5] = (obj->orient.rvec * pm->maxs.x) +
(obj->orient.uvec * pm->mins.y) +
(obj->orient.fvec * pm->maxs.z);
verts[6] = (obj->orient.rvec * pm->mins.x) +
(obj->orient.uvec * pm->mins.y) +
(obj->orient.fvec * pm->maxs.z);
verts[7] = (obj->orient.rvec * pm->mins.x) +
(obj->orient.uvec * pm->maxs.y) +
(obj->orient.fvec * pm->maxs.z);
// mprintf(0, "START\n");
for(i = 0; i < 8; i++)
{
verts[i] += *new_pos;
// mprintf(0, "%f %f %f\n", XYZ(&verts[i]));
}
// mprintf(0, "END\n");
norms[0] = obj->orient.rvec;
norms[1] = obj->orient.fvec;
norms[2] = -obj->orient.rvec;
norms[3] = -obj->orient.fvec;
norms[4] = obj->orient.uvec;
norms[5] = -obj->orient.uvec;
for(i = 0; i < 8; i++)
{
rel[i] = verts[i] - *vertex_ptr_list[0];
dot[i] = rel[i] * (*face_normal);
}
// Get Plane intersection point
for(i = 0; i < 12; i++)
{
vector movement;
bool found;
float nmovement;
found = false;
if(dot[bbox_edges[i][0]] > 0.0f && dot[bbox_edges[i][1]] < 0.0f)
{
movement = verts[bbox_edges[i][1]] - verts[bbox_edges[i][0]];
nmovement = -(movement * *face_normal);
plane_pnt = verts[bbox_edges[i][0]];
plane_pnt += movement * (dot[bbox_edges[i][0]]/nmovement);
f_int_poly = true;
found = true;
}
else if(dot[bbox_edges[i][0]] < 0.0f && dot[bbox_edges[i][1]] > 0.0f)
{
movement = verts[bbox_edges[i][0]] - verts[bbox_edges[i][1]];
nmovement = -(movement * *face_normal);
plane_pnt = verts[bbox_edges[i][1]];
plane_pnt += movement * (dot[bbox_edges[i][1]]/nmovement);
f_int_poly = true;
found = true;
}
if((found) && (!check_point_to_face(&plane_pnt, face_normal, nv, vertex_ptr_list)))
{
// we hit it
// mprintf(0, "BBOX Collided with a plane\n");
if(fast_exit)
return true;
int_points_poly[num_int_poly++] = plane_pnt;
}
}
for(j = 0; j < 6; j++)
{
// Now the other way
// Get Plane intersection point
for(i = 0; i < nv; i++)
{
rel[i] = *vertex_ptr_list[i] - verts[bbox_faces[j][0]];
dot[i] = rel[i] * (norms[j]);
}
for(i = 0; i < nv; i++)
{
vector movement;
bool found;
float nmovement;
found = false;
if(dot[i] > 0.0f && dot[(i+1)%nv] < 0.0f)
{
movement = *vertex_ptr_list[(i+1)%nv] - *vertex_ptr_list[i];
nmovement = -(movement * norms[j]);
plane_pnt = *vertex_ptr_list[i];
plane_pnt += movement * (dot[i]/nmovement);
f_int_box = true;
found = true;
}
else if(dot[i] < 0.0f && dot[(i+1)%nv] > 0.0f)
{
movement = *vertex_ptr_list[i] - *vertex_ptr_list[(i+1)%nv];
nmovement = -(movement * norms[j]);
plane_pnt = *vertex_ptr_list[(i+1)%nv];
plane_pnt += movement * (dot[(i+1)%nv]/nmovement);
f_int_box = true;
found = true;
}
if(found)
{
for(k = 0; k < 4; k++)
{
bbox_vertex_ptr_list[k] = &verts[bbox_faces[j][k]];
}
if (!check_point_to_face(&plane_pnt, &norms[j], 4, bbox_vertex_ptr_list))
{
// we hit it
// mprintf(0, "BBOX Collided with a plane\n");
if(fast_exit)
return true;
int_faces |= (0x01 << j);
int_points_box[num_int_box++] = plane_pnt;
}
}
}
}
if(num_int_poly || num_int_box)
{
vm_MakeZero(collision_point);
for(i = 0; i < num_int_poly; i++)
{
*collision_point += int_points_poly[i];
}
for(i = 0; i < num_int_box; i++)
{
*collision_point += int_points_box[i];
}
*collision_point /= (float)(num_int_poly + num_int_box);
*collision_normal = *face_normal;
return true;
}
return false;
}
*/
vector PointSpeed(object *obj, vector *pos, matrix *orient, vector *rotvel, vector *velocity) {
vector r1 = *pos - obj->pos;
vector w1;
vector n1;
float temp1;
matrix o_t1 = *orient;
vm_TransposeMatrix(&o_t1);
vector cmp1 = *rotvel * o_t1;
ConvertEulerToAxisAmount(&cmp1, &n1, &temp1);
n1 *= temp1;
if (temp1 != 0.0f) {
vm_CrossProduct(&w1, &n1, &r1);
} else {
w1 = Zero_vector;
}
return *velocity + w1;
}
// MTS: only used in this file.
// Hacked for some initial testing
bool BBoxPlaneIntersection(bool fast_exit, vector *collision_point, vector *collision_normal, object *obj,
vector *new_pos, int nv, vector **vertex_ptr_list, vector *face_normal, matrix *orient,
vector *rotvel, vector *velocity) {
vector plane_pnt;
vector verts[12];
poly_model *pm = &Poly_models[obj->rtype.pobj_info.model_num];
int i;
vector rel[32];
float dot[32];
bool collidable[32];
int num_int_box = 0;
vector int_points_box[12];
verts[0] = (orient->rvec * pm->mins.x) + (orient->uvec * pm->maxs.y) + (orient->fvec * pm->mins.z);
verts[1] = (orient->rvec * pm->mins.x) + (orient->uvec * pm->mins.y) + (orient->fvec * pm->mins.z);
verts[2] = (orient->rvec * pm->maxs.x) + (orient->uvec * pm->mins.y) + (orient->fvec * pm->mins.z);
verts[3] = (orient->rvec * pm->maxs.x) + (orient->uvec * pm->maxs.y) + (orient->fvec * pm->mins.z);
verts[4] = (orient->rvec * pm->maxs.x) + (orient->uvec * pm->maxs.y) + (orient->fvec * pm->maxs.z);
verts[5] = (orient->rvec * pm->maxs.x) + (orient->uvec * pm->mins.y) + (orient->fvec * pm->maxs.z);
verts[6] = (orient->rvec * pm->mins.x) + (orient->uvec * pm->mins.y) + (orient->fvec * pm->maxs.z);
verts[7] = (orient->rvec * pm->mins.x) + (orient->uvec * pm->maxs.y) + (orient->fvec * pm->maxs.z);
for (i = 0; i < 8; i++) {
verts[i] += *new_pos;
}
vector xxx_normal = Zero_vector;
xxx_normal.y = 1.0f;
for (i = 0; i < 8; i++) {
rel[i] = verts[i];
dot[i] = rel[i] * (xxx_normal);
}
for (i = 0; i < 8; i++) {
collidable[i] =
true; //(PointSpeed(&Objects[fvi_query_ptr->thisobjnum], &verts[i], orient, rotvel, velocity).y < 0.0);
}
// Get Ground intersection points
for (i = 0; i < 12; i++) {
vector movement;
bool found;
float nmovement;
found = false;
if (dot[bbox_edges[i][0]] > 0.0f && dot[bbox_edges[i][1]] < 0.0f && collidable[bbox_edges[i][1]]) {
movement = verts[bbox_edges[i][1]] - verts[bbox_edges[i][0]];
nmovement = -(movement * *face_normal);
plane_pnt = verts[bbox_edges[i][0]];
plane_pnt += movement * (dot[bbox_edges[i][0]] / nmovement);
found = true;
} else if (dot[bbox_edges[i][0]] < 0.0f && dot[bbox_edges[i][1]] > 0.0f && collidable[bbox_edges[i][0]]) {
movement = verts[bbox_edges[i][0]] - verts[bbox_edges[i][1]];
nmovement = -(movement * *face_normal);
plane_pnt = verts[bbox_edges[i][1]];
plane_pnt += movement * (dot[bbox_edges[i][1]] / nmovement);
found = true;
}
if (found) {
if (fast_exit)
return true;
int_points_box[num_int_box++] = plane_pnt;
}
}
if (num_int_box) {
vm_MakeZero(collision_point);
for (i = 0; i < num_int_box; i++) {
*collision_point += int_points_box[i];
}
*collision_point /= (float)(num_int_box);
*collision_normal = xxx_normal;
// mprintf(0, "BBox %d hits\n", num_int_box);
return true;
}
return false;
}
// Returns true if the object is through any walls
int object_intersects_wall(object *objp) {
// n_segs_visited = 0;
//
// return sphere_intersects_wall(&objp->pos,objp->segnum,objp->size);
ASSERT(0);
return 0;
}
void check_hit_obj(int objnum) {
vector hit_point;
float cur_dist;
const object *obj = &Objects[objnum];
int collision_type;
int m_obj_index = fvi_query_ptr->thisobjnum;
object *m_obj = &Objects[m_obj_index];
if (!(fvi_query_ptr->flags & FQ_CHECK_OBJS) && (obj->type != OBJ_ROOM))
return;
if ((fvi_query_ptr->flags & (FQ_IGNORE_EXTERNAL_ROOMS)) && (obj->type == OBJ_ROOM))
return;
if (obj->flags & OF_NO_OBJECT_COLLISIONS)
return;
if (!(obj->flags & OF_DEAD)) {
if (m_obj_index != objnum) {
if (!((m_obj_index > -1) && ((collision_type = CollisionResult[m_obj->type][obj->type]) == RESULT_NOTHING) &&
(CollisionResult[obj->type][m_obj->type] == RESULT_NOTHING))) {
// Account for ray casting
if (m_obj_index <= -1 && (CollisionRayResult[obj->type] == RESULT_NOTHING))
return;
if (object_movement_AABB(&Objects[objnum])) {
#ifndef NED_PHYSICS
#ifdef _DEBUG
if (Physics_player_verbose) {
if (OBJNUM(Player_object) == objnum && m_obj_index != -1) {
LOG_DEBUG.printf("FVI: %d AABB with player", m_obj_index);
} else if (Player_object == m_obj) {
LOG_DEBUG.printf("FVI: Player AABB with %d", objnum);
}
}
#endif
#endif
if (fvi_query_ptr->ignore_obj_list == nullptr || !obj_in_list(objnum, fvi_query_ptr->ignore_obj_list)) {
if (!ObjectsAreRelated(objnum, m_obj_index)) {
if (m_obj_index < 0) {
switch (obj->type) {
case OBJ_ROOM:
if (fvi_query_ptr->flags & FQ_EXTERNAL_ROOMS_AS_SPHERE)
collision_type = RESULT_CHECK_SPHERE_SPHERE;
else
collision_type = RESULT_CHECK_SPHERE_ROOM;
break;
case OBJ_PLAYER:
if (fvi_query_ptr->flags & FQ_PLAYERS_AS_SPHERE)
collision_type = RESULT_CHECK_SPHERE_SPHERE;
else
collision_type = RESULT_CHECK_SPHERE_POLY;
break;
case OBJ_ROBOT:
if (fvi_query_ptr->flags & FQ_ROBOTS_AS_SPHERE)
collision_type = RESULT_CHECK_SPHERE_SPHERE;
else
collision_type = RESULT_CHECK_SPHERE_POLY;
break;
default:
collision_type = RESULT_CHECK_SPHERE_POLY;
break;
}
} else {
if (((m_obj->type == OBJ_CLUTTER) && (m_obj->mtype.phys_info.flags & PF_GRAVITY) &&
(m_obj->movement_type == MT_PHYSICS) && (obj->type == OBJ_PLAYER)) ||
((obj->type == OBJ_CLUTTER) && (obj->mtype.phys_info.flags & PF_GRAVITY) &&
(obj->movement_type == MT_PHYSICS) && (m_obj->type == OBJ_PLAYER))) {
collision_type = RESULT_CHECK_SPHERE_SPHERE;
}
// Ignore robot collisions if it is specified
if ((m_obj->mtype.phys_info.flags & PF_NO_SAME_COLLISIONS) && (obj->type == m_obj->type) &&
(obj->id == m_obj->id))
return;
// Ignore robot collisions if it is specified
if ((m_obj->mtype.phys_info.flags & PF_NO_ROBOT_COLLISIONS) &&
(obj->type == OBJ_CLUTTER || obj->type == OBJ_ROBOT || (obj->type == OBJ_BUILDING && obj->ai_info)))
return;
if ((obj->mtype.phys_info.flags & PF_NO_ROBOT_COLLISIONS) &&
(obj->type == OBJ_CLUTTER || m_obj->type == OBJ_ROBOT ||
(m_obj->type == OBJ_BUILDING && m_obj->ai_info)))
return;
if ((m_obj->mtype.phys_info.flags & PF_NO_DOOR_COLLISIONS)) {
if (obj->movement_type != MT_PHYSICS && obj->movement_type != MT_WALKING) {
return;
}
}
}
if (fvi_query_ptr->flags & FQ_IGNORE_NON_LIGHTMAP_OBJECTS)
if (obj->lighting_render_type != LRT_LIGHTMAPS && obj->type != OBJ_ROOM)
return;
if (fvi_query_ptr->flags & FQ_IGNORE_POWERUPS)
if (obj->type == OBJ_POWERUP)
return;
if (fvi_query_ptr->flags & FQ_IGNORE_WEAPONS)
if (obj->type == OBJ_WEAPON || obj->type == OBJ_FIREBALL || obj->type == OBJ_SHARD ||
obj->type == OBJ_SHOCKWAVE)
return;
if (fvi_query_ptr->flags & FQ_IGNORE_MOVING_OBJECTS)
if (obj->movement_type == MT_PHYSICS || obj->movement_type == MT_WALKING)
return;
if (obj->type != OBJ_ROOM) {
if (fvi_query_ptr->flags & FQ_ONLY_PLAYER_OBJ)
if (obj->type != OBJ_PLAYER)
return;
if (fvi_query_ptr->flags & FQ_ONLY_DOOR_OBJ)
if (obj->type != OBJ_DOOR)
return;
}
if (obj->type == OBJ_PLAYER && (fvi_query_ptr->flags & FQ_PLAYERS_AS_SPHERE))
collision_type = RESULT_CHECK_SPHERE_SPHERE;
if (obj->type == OBJ_ROBOT && (fvi_query_ptr->flags & FQ_ROBOTS_AS_SPHERE))
collision_type = RESULT_CHECK_SPHERE_SPHERE;
switch (collision_type) {
case RESULT_CHECK_BBOX_ROOM:
case RESULT_CHECK_SPHERE_ROOM: {
ASSERT(obj->type == OBJ_ROOM);
fvi_room(obj->id, -1, objnum);
} break;
case RESULT_CHECK_SPHERE_POLY:
case RESULT_CHECK_BBOX_POLY: {
// float dist;
// vector pos;
// float size;
if (!(obj->flags & OF_POLYGON_OBJECT))
goto sphere_sphere;
// pos = obj->pos +
// obj->anim_sphere_offset; dist =
// vm_VectorDistance(&pos, &fvi_anim_sphere_p0);
// size = Poly_models[obj->rtype.pobj_info.model_num].anim_size;
// if((dist <= size +
// fvi_anim_sphere_rad)
// ||
// check_vector_to_object(&hit_point, &cur_dist, &fvi_anim_sphere_p0,&fvi_anim_sphere_p1,
// fvi_anim_sphere_rad, &Objects[objnum], &Objects[fvi_query_ptr->thisobjnum])
// {
fvi_curobj = objnum;
fvi_moveobj = m_obj_index;
if (PolyCollideObject(&Objects[objnum])) {
compute_movement_AABB();
}
// }
} break;
case RESULT_CHECK_POLY_SPHERE:
case RESULT_CHECK_POLY_BBOX: {
if (!(m_obj->flags & OF_POLYGON_OBJECT))
goto sphere_sphere;
// Save the Fvi information pointers.
fvi_info *temp_fvi_hit_data_ptr = fvi_hit_data_ptr;
fvi_query *temp_fvi_query_ptr = fvi_query_ptr;
fvi_info hit_info;
fvi_query fq;
float saved_dist = fvi_collision_dist;
vector relative_pos = obj->pos + (*fvi_query_ptr->p0 - *fvi_query_ptr->p1);
fvi_hit_data_ptr = &hit_info;
fvi_query_ptr = &fq;
fq.p0 = &Objects[objnum].pos;
fq.p1 = &relative_pos;
fq.rad = obj->size;
fq.thisobjnum = objnum;
fq.flags = 0;
hit_info.num_hits = 0;
hit_info.hit_type[0] = HIT_NONE;
fvi_curobj = m_obj_index;
fvi_moveobj = objnum;
PolyCollideObject(&Objects[temp_fvi_query_ptr->thisobjnum]);
fvi_hit_data_ptr = temp_fvi_hit_data_ptr;
fvi_query_ptr = temp_fvi_query_ptr;
if (hit_info.hit_type[0] != HIT_NONE) {
int counter;
if (saved_dist != fvi_collision_dist) {
fvi_hit_data_ptr->hit_pnt = m_obj->pos + (obj->pos - hit_info.hit_pnt);
compute_movement_AABB();
}
fvi_hit_data_ptr->num_hits = 0;
for (counter = 0; counter < hit_info.num_hits; counter++) {
fvi_hit_data_ptr->hit_type[fvi_hit_data_ptr->num_hits] = HIT_OBJECT;
fvi_hit_data_ptr->hit_object[fvi_hit_data_ptr->num_hits] = objnum;
fvi_hit_data_ptr->hit_face_pnt[fvi_hit_data_ptr->num_hits] =
fvi_hit_data_ptr->hit_pnt + (hit_info.hit_face_pnt[counter] - m_obj->pos);
fvi_hit_data_ptr->hit_wallnorm[fvi_hit_data_ptr->num_hits] = -hit_info.hit_wallnorm[counter];
fvi_hit_data_ptr->hit_subobject[0] = hit_info.hit_subobject[0];
fvi_hit_data_ptr->hit_face[0] = hit_info.hit_face[0];
fvi_hit_data_ptr->hit_subobj_fvec = hit_info.hit_subobj_fvec;
fvi_hit_data_ptr->hit_subobj_uvec = hit_info.hit_subobj_uvec;
fvi_hit_data_ptr->hit_subobj_pos = hit_info.hit_subobj_pos;
fvi_hit_data_ptr->num_hits++;
}
ASSERT(!(fvi_hit_data_ptr->num_hits > 1 && !(fvi_query_ptr->flags & FQ_MULTI_POINT)));
}
} break;
case RESULT_CHECK_SPHERE_SPHERE:
case RESULT_CHECK_BBOX_BBOX:
case RESULT_CHECK_SPHERE_BBOX:
case RESULT_CHECK_BBOX_SPHERE: {
sphere_sphere:
if (check_vector_to_object(&hit_point, &cur_dist, &fvi_anim_sphere_p0, &fvi_anim_sphere_p1,
fvi_anim_sphere_rad, &Objects[objnum], &Objects[m_obj_index])) {
// hit_point
if (cur_dist < fvi_collision_dist) {
vector pos_hit;
float hit_obj_size;
vector hit_obj_pos;
hit_obj_pos = obj->pos + obj->anim_sphere_offset;
pos_hit = hit_point - hit_obj_pos;
if ((obj->flags & OF_POLYGON_OBJECT) && obj->type != OBJ_ROOM && obj->type != OBJ_WEAPON &&
obj->type != OBJ_POWERUP && obj->type != OBJ_DEBRIS && obj->type != OBJ_PLAYER) {
hit_obj_size = Poly_models[obj->rtype.pobj_info.model_num].anim_size;
} else {
hit_obj_size = obj->size;
}
pos_hit = hit_obj_pos + pos_hit * (hit_obj_size / (hit_obj_size + fvi_anim_sphere_rad));
ASSERT(hit_obj_size + fvi_anim_sphere_rad > 0.0f);
fvi_collision_dist = cur_dist;
fvi_hit_data_ptr->hit_pnt = hit_point - fvi_anim_sphere_offset;
compute_movement_AABB();
fvi_hit_data_ptr->num_hits = 1;
fvi_hit_data_ptr->hit_object[0] = objnum;
fvi_hit_data_ptr->hit_type[0] = HIT_OBJECT;
fvi_hit_data_ptr->hit_face_pnt[0] = pos_hit;
fvi_hit_data_ptr->hit_wallnorm[0] = (pos_hit - hit_obj_pos) / hit_obj_size;
ASSERT(hit_obj_size > 0.0f);
ASSERT(objnum != -1);
}
}
} break;
default: {
LOG_WARNING.printf("Collision of type %d is not programmed yet", collision_type);
} break;
}
} else {
#ifndef NED_PHYSICS
#ifdef _DEBUG
if (Physics_player_verbose) {
if (OBJNUM(Player_object) == objnum || Player_object == m_obj) {
LOG_DEBUG << "Related";
}
}
#endif
#endif
}
} else {
#ifndef NED_PHYSICS
#ifdef _DEBUG
if (Physics_player_verbose) {
if (OBJNUM(Player_object) == objnum || Player_object == m_obj) {
LOG_DEBUG << "Ignore list";
}
}
#endif
#endif
}
}
}
} else {
#ifndef NED_PHYSICS
#ifdef _DEBUG
if (Physics_player_verbose) {
if (objnum != m_obj_index) {
if (OBJNUM(Player_object) == objnum || Player_object == m_obj) {
LOG_DEBUG.printf("Result nothing %d %d", objnum, m_obj_index);
}
}
}
#endif
#endif
}
} else {
#ifndef NED_PHYSICS
#ifdef _DEBUG
if (Physics_player_verbose) {
if (OBJNUM(Player_object) == objnum || Player_object == m_obj) {
LOG_DEBUG.printf("Dead %d %d", objnum, m_obj_index);
}
}
#endif
#endif
}
ASSERT(!(fvi_hit_data_ptr->num_hits > 1 && !(fvi_query_ptr->flags & FQ_MULTI_POINT)));
}
/* // Check each terrain cell
for(i = 0; i < fvi_num_cells_visited; i++)
{
int j_start;
int j_end;
start_node = GetColTerrainSegFromTerrainSeg(fvi_cells_visited[i]);
ASSERT(start_node != -1);
if(start_node%COL_TERRAIN_WIDTH) j_start = -1;
else j_start = 0;
if(start_node%COL_TERRAIN_WIDTH < (COL_TERRAIN_WIDTH - 1)) j_end = 1;
else j_end = 0;
for(j = j_start; j <= j_end; j++)
{
int k_start;
int k_end;
if(start_node/COL_TERRAIN_WIDTH) k_start = -1;
else k_start = 0;
if(start_node/COL_TERRAIN_WIDTH < (COL_TERRAIN_DEPTH - 1)) k_end = 1;
else k_end = 0;
for(k = k_start; k <= k_end; k++)
{
int cur_col_node = start_node + j + (k * COL_TERRAIN_WIDTH);
// Only check each col cell once.
if((fvi_col_terrain_visit_list[cur_col_node >> 3] & (0x01 << (cur_col_node % 8))) == 0)
{
ASSERT(fvi_num_col_cells_visited <= MAX_CELLS_VISITED);
fvi_col_terrain_visit_list[cur_col_node >> 3] |= 0x01 << (cur_col_node % 8);
fvi_col_cells_visited[fvi_num_col_cells_visited] = cur_col_node;
fvi_num_col_cells_visited++;
for (objnum = Col_terrain_seg[cur_col_node].objects; objnum != -1; objnum =
Objects[objnum].next)
{
if(!(Objects[objnum].flags & OF_BIG_OBJECT))
check_hit_obj(objnum);
}
}
}
}
}
*/
#define MAX_BBOX_GROUND_TOLERANCE 0.0001
/*
void DoLinearApprox(vector *collision_point, vector *collision_normal, float *hit_dist, float *hit_interval, vector
*movement_dir, vector *p0, object *obj, int nv, vector **vertex_ptr_list, vector *face_normal)
{
vector end_pos;
bool hit;
*hit_interval /= 2.0f;
end_pos = *p0 + ((*hit_interval + *hit_dist)* *movement_dir);
float frametime = fvi_query_ptr->frametime * ((*hit_interval + *hit_dist)/vm_VectorDistance(fvi_query_ptr->p0,
fvi_query_ptr->p1)); matrix orient = *fvi_query_ptr->o_orient; vector rotvel = *fvi_query_ptr->o_rotvel; vector rotforce
= *fvi_query_ptr->o_rotthrust; angle turnroll = *fvi_query_ptr->o_turnroll;
//vector thrust = *fvi_query_ptr->o_thrust;
vector velocity = *fvi_query_ptr->o_velocity;
//vector movement_pos;
//vector movement_vec;
//vector test;
float sim_time_remaining = frametime;
float old_sim_time_remaining = frametime;
PhysicsDoSimRot(&Objects[fvi_query_ptr->thisobjnum], frametime, &orient, &rotforce, &rotvel, &turnroll);
// PhysicsDoSimLinear(&Objects[fvi_query_ptr->thisobjnum], &Objects[fvi_query_ptr->thisobjnum].pos, &thrust,
&velocity, &movement_vec, &movement_pos, frametime);
vector moved_vec_n;
float attempted_dist,actual_dist;
// Save results of this simulation
old_sim_time_remaining = sim_time_remaining;
moved_vec_n = end_pos - *p0;
if(moved_vec_n != Zero_vector)
{
actual_dist = vm_NormalizeVector(&moved_vec_n);
}
else
{
actual_dist = 0.0f;
}
// Compute more results of this simulation
attempted_dist = vm_VectorDistance(fvi_query_ptr->p0, fvi_query_ptr->p1);
sim_time_remaining = sim_time_remaining * ((attempted_dist - actual_dist) / attempted_dist);
float moved_time = old_sim_time_remaining - sim_time_remaining;
if (sim_time_remaining < 0.0)
{
sim_time_remaining = 0.0;
moved_time = old_sim_time_remaining;
}
if (sim_time_remaining > old_sim_time_remaining)
{
sim_time_remaining = old_sim_time_remaining;
moved_time = 0.0;
}
if(old_sim_time_remaining > 0.0)
{
velocity = fvi_hit_data_ptr->hit_velocity * (moved_time / old_sim_time_remaining) + velocity *
(sim_time_remaining / old_sim_time_remaining);
}
else
{
velocity = fvi_hit_data_ptr->hit_velocity;
}
hit = BBoxPlaneIntersection(false, collision_point, collision_normal, obj, &end_pos, nv, vertex_ptr_list,
face_normal, &orient, &rotvel, &velocity);
if(!hit)
{
*hit_dist += *hit_interval;
}
else
{
fvi_hit_data_ptr->hit_pnt = end_pos;
fvi_hit_data_ptr->hit_turnroll = turnroll;
fvi_hit_data_ptr->hit_orient = orient;
fvi_hit_data_ptr->hit_rotvel = rotvel;
}
if(*hit_interval > MAX_BBOX_GROUND_TOLERANCE)
DoLinearApprox(collision_point, collision_normal, hit_dist, hit_interval, movement_dir, p0, obj, nv,
vertex_ptr_list, face_normal);
return;
}
*/
// checks for collisions within a given terrain node (fvi_sub minus the recursiveness).
// If f_check_local_nodes is set, it will look in surrounding nodes.
inline void check_terrain_node(int cur_node, bool f_check_local_nodes, bool f_check_ground) {
vector hit_point;
float cur_dist;
int check_x, check_y;
int tercheck_x, tercheck_y;
int new_node;
int xcounter, ycounter;
int xstart, xend;
int ystart, yend;
int terxstart, terxend;
int terystart, teryend;
int i;
int objnum;
bool f_check_next_ground;
object *this_obj;
if (fvi_query_ptr->thisobjnum >= 0)
this_obj = &Objects[fvi_query_ptr->thisobjnum];
else
this_obj = nullptr;
// Object checks
if ((fvi_terrain_obj_visit_list[cur_node >> 3] & (0x01 << (cur_node % 8))) == 0) {
ASSERT(cur_node >= 0 && cur_node < TERRAIN_WIDTH * TERRAIN_DEPTH);
ASSERT(fvi_num_cells_obj_visited < MAX_CELLS_VISITED);
fvi_terrain_obj_visit_list[cur_node >> 3] |= 0x01 << (cur_node % 8);
fvi_cells_obj_visited[fvi_num_cells_obj_visited] = cur_node;
fvi_num_cells_obj_visited++;
if (fvi_query_ptr->flags & FQ_CHECK_OBJS) {
for (objnum = Terrain_seg[cur_node].objects; objnum != -1; objnum = Objects[objnum].next) {
ASSERT(objnum != -1);
if (!(Objects[objnum].flags & OF_BIG_OBJECT))
check_hit_obj(objnum);
}
} else {
if (!(fvi_query_ptr->flags & FQ_IGNORE_EXTERNAL_ROOMS))
for (objnum = Terrain_seg[cur_node].objects; objnum != -1; objnum = Objects[objnum].next) {
ASSERT(objnum != -1);
if ((Objects[objnum].type == OBJ_ROOM) && !(Objects[objnum].flags & OF_BIG_OBJECT))
check_hit_obj(objnum);
}
}
}
// Terrain node checks
if (f_check_ground) {
int lod_x = (cur_node % TERRAIN_WIDTH) >> 2;
int lod_z = (cur_node / TERRAIN_WIDTH) >> 2;
ASSERT(cur_node >= 0 && cur_node < TERRAIN_WIDTH * TERRAIN_DEPTH);
ASSERT((fvi_terrain_visit_list[cur_node >> 3] & (0x01 << (cur_node % 8))) == 0);
ASSERT(fvi_num_cells_visited < MAX_CELLS_VISITED);
// Mark the current node as visited
fvi_terrain_visit_list[cur_node >> 3] |= 0x01 << (cur_node % 8);
fvi_cells_visited[fvi_num_cells_visited] = cur_node;
fvi_num_cells_visited++;
if (((float)Terrain_max_height_int[6][lod_z * (TERRAIN_WIDTH >> 2) + lod_x] * TERRAIN_HEIGHT_INCREMENT +
fvi_query_ptr->rad >=
fvi_query_ptr->p0->y ||
(float)Terrain_max_height_int[6][lod_z * (TERRAIN_WIDTH >> 2) + lod_x] * TERRAIN_HEIGHT_INCREMENT +
fvi_query_ptr->rad >=
fvi_query_ptr->p1->y) &&
!(Terrain_seg[cur_node].flags & TF_INVISIBLE) &&
!(fvi_query_ptr->flags & (FQ_IGNORE_WALLS | FQ_IGNORE_TERRAIN))) {
// check this node for ground collision
for (i = 0; i < 2; i++) {
vector face_normal;
vector *vertex_ptr_list[4];
vector vlist[3];
int face_hit_type;
vector wall_norm;
vector colp;
// There are two triangles per node. Check each of them for collision.
if (i == 0) {
int cellnum_upper_right = cur_node + TERRAIN_WIDTH + 1;
int cellnum_right = cur_node + 1;
vlist[0].x = (cur_node % TERRAIN_WIDTH) * TERRAIN_SIZE;
vlist[0].y = Terrain_seg[cur_node].y;
vlist[0].z = (cur_node / TERRAIN_WIDTH) * TERRAIN_SIZE;
vlist[1].x = (cellnum_upper_right % TERRAIN_WIDTH) * TERRAIN_SIZE;
if (cellnum_upper_right < TERRAIN_WIDTH * TERRAIN_DEPTH)
vlist[1].y = Terrain_seg[cellnum_upper_right].y;
else
vlist[1].y = 0.0;
vlist[1].z = (cellnum_upper_right / TERRAIN_WIDTH) * TERRAIN_SIZE;
vlist[2].x = (cellnum_right % TERRAIN_WIDTH) * TERRAIN_SIZE;
if (cellnum_right < TERRAIN_WIDTH * TERRAIN_DEPTH)
vlist[2].y = Terrain_seg[cellnum_right].y;
else
vlist[2].y = 0.0;
vlist[2].z = (cellnum_right / TERRAIN_WIDTH) * TERRAIN_SIZE;
vertex_ptr_list[0] = &vlist[0];
vertex_ptr_list[1] = &vlist[1];
vertex_ptr_list[2] = &vlist[2];
face_normal = TerrainNormals[MAX_TERRAIN_LOD - 1][cur_node].normal2;
} else {
int cellnum_upper = cur_node + TERRAIN_WIDTH;
int cellnum_upper_right = cur_node + TERRAIN_WIDTH + 1;
vlist[0].x = (cur_node % TERRAIN_WIDTH) * TERRAIN_SIZE;
vlist[0].y = Terrain_seg[cur_node].y;
vlist[0].z = (cur_node / TERRAIN_WIDTH) * TERRAIN_SIZE;
vlist[1].x = (cellnum_upper % TERRAIN_WIDTH) * TERRAIN_SIZE;
if (cellnum_upper < TERRAIN_WIDTH * TERRAIN_DEPTH)
vlist[1].y = Terrain_seg[cellnum_upper].y;
else
vlist[1].y = 0.0;
vlist[1].z = (cellnum_upper / TERRAIN_WIDTH) * TERRAIN_SIZE;
vlist[2].x = (cellnum_upper_right % TERRAIN_WIDTH) * TERRAIN_SIZE;
if (cellnum_upper_right < TERRAIN_WIDTH * TERRAIN_DEPTH)
vlist[2].y = Terrain_seg[cellnum_upper_right].y;
else
vlist[2].y = 0.0;
vlist[2].z = (cellnum_upper_right / TERRAIN_WIDTH) * TERRAIN_SIZE;
vertex_ptr_list[0] = &vlist[0];
vertex_ptr_list[1] = &vlist[1];
vertex_ptr_list[2] = &vlist[2];
face_normal = TerrainNormals[MAX_TERRAIN_LOD - 1][cur_node].normal1;
}
// Did we hit this face?
if ((fvi_query_ptr->thisobjnum >= 0) &&
(Objects[fvi_query_ptr->thisobjnum].mtype.phys_info.flags & PF_POINT_COLLIDE_WALLS)) {
face_hit_type = check_line_to_face(&hit_point, &colp, &cur_dist, &wall_norm, fvi_query_ptr->p0,
&fvi_hit_data_ptr->hit_pnt, &face_normal, vertex_ptr_list, 3, 0.0f);
} else if ((this_obj) && (this_obj->flags & OF_POLYGON_OBJECT)) {
face_hit_type =
check_line_to_face(&hit_point, &colp, &cur_dist, &wall_norm, &fvi_wall_sphere_p0, &fvi_wall_sphere_p1,
&face_normal, vertex_ptr_list, 3, fvi_wall_sphere_rad);
hit_point -= fvi_wall_sphere_offset;
} else {
face_hit_type =
check_line_to_face(&hit_point, &colp, &cur_dist, &wall_norm, fvi_query_ptr->p0,
&fvi_hit_data_ptr->hit_pnt, &face_normal, vertex_ptr_list, 3, fvi_query_ptr->rad);
}
/*
if(Objects[fvi_query_ptr->thisobjnum].type == OBJ_CLUTTER) {
mprintf(0, "Y = %f\n", Objects[fvi_query_ptr->thisobjnum].pos.y);
}
*/
// chrisnote - closest hit should be tracked... So, we can call BBPI once with
// false and all other times with true for fast exit.
#if 0
if (this_obj && this_obj->type == OBJ_CLUTTER) {
if (!BBoxPlaneIntersection(true, &fvi_hit_data_ptr->hit_face_pnt[0], &fvi_hit_data_ptr->hit_wallnorm[0],
&Objects[fvi_query_ptr->thisobjnum], fvi_query_ptr->p0, 3, vertex_ptr_list,
&face_normal, fvi_query_ptr->o_orient, fvi_query_ptr->o_rotvel,
fvi_query_ptr->o_velocity))
ASSERT(1);
if (fvi_hit_data_ptr->hit_type[0] == HIT_NONE &&
BBoxPlaneIntersection(false, &fvi_hit_data_ptr->hit_face_pnt[0], &fvi_hit_data_ptr->hit_wallnorm[0],
&Objects[fvi_query_ptr->thisobjnum], &fvi_hit_data_ptr->hit_pnt, 3, vertex_ptr_list,
&face_normal, &fvi_hit_data_ptr->hit_orient, &fvi_hit_data_ptr->hit_rotvel,
&fvi_hit_data_ptr->hit_velocity)) {
float hit_dist = 0.0;
float hit_interval;
vector movement_dir;
if (!BBoxPlaneIntersection(false, &fvi_hit_data_ptr->hit_face_pnt[0], &fvi_hit_data_ptr->hit_wallnorm[0],
&Objects[fvi_query_ptr->thisobjnum], fvi_query_ptr->p0, 3, vertex_ptr_list,
&face_normal, fvi_query_ptr->o_orient, fvi_query_ptr->o_rotvel,
fvi_query_ptr->o_velocity)) {
movement_dir = fvi_hit_data_ptr->hit_pnt - *fvi_query_ptr->p0;
hit_interval = vm_NormalizeVector(&movement_dir);
DoLinearApprox(&fvi_hit_data_ptr->hit_face_pnt[0], &fvi_hit_data_ptr->hit_wallnorm[0], &hit_dist,
&hit_interval, &movement_dir, fvi_query_ptr->p0, &Objects[fvi_query_ptr->thisobjnum], 3,
vertex_ptr_list, &face_normal);
fvi_collision_dist = hit_dist;
} else {
fvi_hit_data_ptr->hit_orient = *fvi_query_ptr->o_orient;
fvi_hit_data_ptr->hit_rotvel = *fvi_query_ptr->o_rotvel;
fvi_hit_data_ptr->hit_turnroll = *fvi_query_ptr->o_turnroll;
fvi_hit_data_ptr->hit_pnt = *fvi_query_ptr->p0;
fvi_collision_dist = 0.0;
movement_dir = Zero_vector;
hit_dist = 0.0f;
}
fvi_hit_data_ptr->hit_type[0] = HIT_TERRAIN;
fvi_hit_data_ptr->hit_wallnorm[0].x = 0.0;
fvi_hit_data_ptr->hit_wallnorm[0].y = 1.0;
fvi_hit_data_ptr->hit_wallnorm[0].z = 0.0;
// fvi_hit_data_ptr->hit_seg = -1; -- set in the fvi_FindIntersection function
// fvi_hit_data_ptr->hit_pnt = *fvi_query_ptr->p0 + hit_dist *movement_dir;
fvi_hit_data_ptr->hit_face[0] = i;
fvi_hit_data_ptr->hit_face_room[0] = cur_node;
// fvi_hit_data_ptr->hit_side_pnt = fvi_hit_data_ptr->hit_pnt;
// fvi_hit_data_ptr->hit_side_pnt.y = fvi_query_ptr->p0->y - Objects[fvi_query_ptr->thisobjnum].size;
/*
if(!BBoxPlaneIntersection(true,
&fvi_hit_data_ptr->hit_face_pnt[0], &fvi_hit_data_ptr->hit_wallnorm[0], &Objects[fvi_query_ptr->thisobjnum],
&fvi_hit_data_ptr->hit_pnt, 3, vertex_ptr_list, &face_normal, &fvi_hit_data_ptr->hit_orient,
&fvi_hit_data_ptr->hit_rotvel, &fvi_hit_data_ptr->hit_rotvel))
ASSERT(1);
*/
goto ignore_hit;
}
}
#endif
// If we hit the face...
if (face_hit_type) {
if (cur_dist <= fvi_collision_dist) {
if ((cur_dist < fvi_collision_dist) || !(fvi_query_ptr->flags & FQ_MULTI_POINT)) {
fvi_hit_data_ptr->num_hits = 0;
fvi_collision_dist = cur_dist;
fvi_hit_data_ptr->hit_pnt = hit_point;
compute_movement_AABB();
} else if (fvi_hit_data_ptr->num_hits == MAX_HITS) {
goto ignore_hit;
}
fvi_hit_data_ptr->hit_object[fvi_hit_data_ptr->num_hits] = -1;
fvi_hit_data_ptr->hit_type[fvi_hit_data_ptr->num_hits] = HIT_TERRAIN;
fvi_hit_data_ptr->hit_wallnorm[fvi_hit_data_ptr->num_hits] = wall_norm;
// fvi_hit_data_ptr->hit_seg = -1; -- set in the fvi_FindIntersection function
fvi_hit_data_ptr->hit_face[fvi_hit_data_ptr->num_hits] = i;
fvi_hit_data_ptr->hit_face_room[fvi_hit_data_ptr->num_hits] = (MAKE_ROOMNUM(cur_node));
fvi_hit_data_ptr->hit_face_pnt[fvi_hit_data_ptr->num_hits] = colp;
fvi_hit_data_ptr->num_hits++;
}
}
ignore_hit:;
}
}
}
// check local nodes for any collision type, but no recursion for them :)
if (f_check_local_nodes) {
int next_y_delta;
// Check worst-case collisions. This includes all nodes within a radius edge of the current node
tercheck_x = check_x = fvi_query_ptr->rad / TERRAIN_SIZE + 1;
tercheck_y = check_y = fvi_query_ptr->rad / TERRAIN_SIZE + 1;
if (fvi_query_ptr->flags & FQ_CHECK_OBJS) {
check_x += CELLS_PER_COL_CELL;
check_y += CELLS_PER_COL_CELL;
}
xstart = cur_node % TERRAIN_WIDTH - check_x;
xend = cur_node % TERRAIN_WIDTH + check_x;
ystart = cur_node / TERRAIN_WIDTH - check_y;
yend = cur_node / TERRAIN_WIDTH + check_y;
terxstart = cur_node % TERRAIN_WIDTH - tercheck_x;
terxend = cur_node % TERRAIN_WIDTH + tercheck_x;
terystart = cur_node / TERRAIN_WIDTH - tercheck_y;
teryend = cur_node / TERRAIN_WIDTH + tercheck_y;
if (xstart < 0)
xstart = 0;
if (xend >= TERRAIN_WIDTH)
xend = TERRAIN_WIDTH - 1;
if (ystart < 0)
ystart = 0;
if (yend >= TERRAIN_DEPTH)
yend = TERRAIN_DEPTH - 1;
// This should be a faster iterative way to do a square with center at original position
new_node = TERRAIN_WIDTH * ystart + xstart;
next_y_delta = TERRAIN_WIDTH - (xend - xstart) - 1;
for (ycounter = ystart; ycounter <= yend; ycounter++) {
for (xcounter = xstart; xcounter <= xend; xcounter++) {
if ((fvi_terrain_visit_list[new_node >> 3] & (0x01 << (new_node % 8))) == 0) {
f_check_next_ground = false;
if (ycounter >= terystart && ycounter <= teryend) {
if ((!f_check_next_ground) && xcounter >= terxstart && xcounter <= terxend) {
f_check_next_ground = true;
}
}
check_terrain_node(new_node, false, f_check_next_ground);
}
new_node += 1;
}
new_node += next_y_delta;
}
}
return;
}
/*
inline void check_square_node(int x, int y, int width)
{
// check local nodes for any collision type, but no recursion for them :)
int next_y_delta;
// Check worst-case collisions. This includes all nodes within a radius edge of the current node
tercheck_x = check_x = fvi_query_ptr->rad/TERRAIN_SIZE + 1;
tercheck_y = check_y = fvi_query_ptr->rad/TERRAIN_SIZE + 1;
if(fvi_query_ptr->flags & FQ_CHECK_OBJS)
{
check_x += CELLS_PER_COL_CELL;
check_y += CELLS_PER_COL_CELL;
}
xstart = cur_node%TERRAIN_WIDTH - check_x;
xend = cur_node%TERRAIN_WIDTH + check_x;
ystart = cur_node/TERRAIN_WIDTH - check_y;
yend = cur_node/TERRAIN_WIDTH + check_y;
terxstart = cur_node%TERRAIN_WIDTH - tercheck_x;
terxend = cur_node%TERRAIN_WIDTH + tercheck_x;
terystart = cur_node/TERRAIN_WIDTH - tercheck_y;
teryend = cur_node/TERRAIN_WIDTH + tercheck_y;
if(xstart < 0) xstart = 0;
if(xend >= TERRAIN_WIDTH) xend = TERRAIN_WIDTH - 1;
if(ystart < 0) ystart = 0;
if(yend >= TERRAIN_DEPTH) yend = TERRAIN_DEPTH - 1;
// This should be a faster iterative way to do a square with center at original position
new_node = TERRAIN_WIDTH * ystart + xstart;
next_y_delta = TERRAIN_WIDTH - (xend - xstart) - 1;
for(ycounter = ystart; ycounter <= yend; ycounter++)
{
for(xcounter = xstart; xcounter <= xend; xcounter++)
{
if((fvi_terrain_visit_list[new_node >> 3] & (0x01 << (new_node % 8))) == 0)
{
f_check_next_ground = false;
if(ycounter >= terystart && ycounter <= teryend)
{
if((!f_check_next_ground) && xcounter >= terxstart && xcounter <=
terxend)
{
f_check_next_ground = true;
}
}
// if(!((fvi_terrain_obj_visit_list[new_node >> 3] & (0x01 << (new_node % 8))) !=
0)) if(!((fvi_terrain_visit_list[new_node >> 3] & (0x01 << (new_node % 8))) != 0)) check_terrain_node(new_node, false,
f_check_next_ground);
}
new_node += 1;
}
new_node += next_y_delta;
}
}
}
*/
int do_fvi_terrain() {
int x1, x2, y1, y2, x, y, delta_y, delta_x, change_x, change_y, length, cur_node, error_term, i;
int new_x, new_y;
int counter;
int delta_ter_check = fvi_query_ptr->rad / TERRAIN_SIZE + 1;
int delta_check = fvi_query_ptr->rad / TERRAIN_SIZE + CELLS_PER_COL_CELL + 1;
// This is the only time we will check the terrain
f_check_terrain = false;
// We need to know the endpoint
fvi_hit_data_ptr->hit_room = GetTerrainRoomFromPos(&fvi_hit_data_ptr->hit_pnt);
// End point is out of bounds, so clip it.
if (fvi_hit_data_ptr->hit_room == -1) {
float delta = 1.0;
vector movement = fvi_hit_data_ptr->hit_pnt - *fvi_query_ptr->p0;
if (fvi_hit_data_ptr->hit_pnt.x < (fvi_query_ptr->rad + 0.000001)) {
delta = (fvi_query_ptr->p0->x - (fvi_query_ptr->rad + 0.000001)) / (-movement.x);
} else if (fvi_hit_data_ptr->hit_pnt.x >
(float)((TERRAIN_WIDTH - 1) * TERRAIN_SIZE) - (fvi_query_ptr->rad + 0.000001)) {
delta = ((float)((TERRAIN_WIDTH - 1) * TERRAIN_SIZE) - (fvi_query_ptr->rad + 0.000001) - fvi_query_ptr->p0->x) /
(movement.x);
}
if (fvi_hit_data_ptr->hit_pnt.z < (fvi_query_ptr->rad + 0.000001)) {
if ((fvi_query_ptr->p0->z - (fvi_query_ptr->rad + 0.000001)) / (-movement.z) < delta)
delta = (fvi_query_ptr->p0->z - (fvi_query_ptr->rad + 0.000001)) / (-movement.z);
} else if (fvi_hit_data_ptr->hit_pnt.z >
(float)((TERRAIN_DEPTH - 1) * TERRAIN_SIZE) - (fvi_query_ptr->rad + 0.000001)) {
if (((float)((TERRAIN_DEPTH - 1) * TERRAIN_SIZE) - (fvi_query_ptr->rad + 0.000001) - fvi_query_ptr->p0->z) /
(movement.z) <
delta)
delta = ((float)((TERRAIN_DEPTH - 1) * TERRAIN_SIZE) - (fvi_query_ptr->rad + 0.000001) - fvi_query_ptr->p0->z) /
(movement.z);
}
fvi_hit_data_ptr->hit_pnt = *fvi_query_ptr->p0 + delta * movement;
fvi_collision_dist = vm_VectorDistance(&fvi_hit_data_ptr->hit_pnt, fvi_query_ptr->p0);
fvi_hit_data_ptr->hit_room = GetTerrainRoomFromPos(&fvi_hit_data_ptr->hit_pnt);
fvi_hit_data_ptr->hit_type[0] = HIT_OUT_OF_TERRAIN_BOUNDS;
compute_movement_AABB();
if (fvi_hit_data_ptr->hit_room == -1)
return fvi_hit_data_ptr->hit_type[0];
}
// Determine the start end end nodes
x1 = CELLNUM(fvi_query_ptr->startroom) % TERRAIN_WIDTH;
y1 = CELLNUM(fvi_query_ptr->startroom) / TERRAIN_WIDTH;
x2 = CELLNUM(fvi_hit_data_ptr->hit_room) % TERRAIN_WIDTH;
y2 = CELLNUM(fvi_hit_data_ptr->hit_room) / TERRAIN_WIDTH;
x = x1;
y = y1;
// How many nodes did I move?
delta_x = x2 - x1;
delta_y = y2 - y1;
// check the current node for collsions (if we are done, return)
check_terrain_node(CELLNUM(fvi_query_ptr->startroom), true, true);
if (delta_x == 0 && delta_y == 0)
goto check_big_objs;
// check the end node
cur_node = y1 * TERRAIN_DEPTH + x2;
check_terrain_node(cur_node, true, (fvi_terrain_visit_list[cur_node >> 3] & (0x01 << (cur_node % 8))) == 0);
// Do a Breshenham line algorithm
if (delta_x < 0) {
change_x = -1;
delta_x = -delta_x;
} else {
change_x = 1;
}
if (delta_y < 0) {
change_y = -1;
delta_y = -delta_y;
} else {
change_y = 1;
}
error_term = 0;
i = 1;
if (delta_x < delta_y) {
length = delta_y + 1;
while (i < length) {
y += change_y;
error_term += delta_x;
if (error_term >= delta_y) {
x += change_x;
error_term -= delta_y;
}
if (y >= TERRAIN_DEPTH || y < 0 || x < 0 || x >= TERRAIN_WIDTH) {
fvi_hit_data_ptr->hit_type[0] = HIT_OUT_OF_TERRAIN_BOUNDS;
goto check_big_objs;
}
for (counter = -delta_check; counter <= delta_check; counter++) {
new_x = x + counter;
if (new_x < 0) {
counter = -x;
new_x = 0;
}
if (new_x >= TERRAIN_WIDTH)
break;
// Check the current node for collisions -- chrishack -- This can be made iterative
cur_node = y * TERRAIN_DEPTH + new_x;
if ((fvi_terrain_visit_list[cur_node >> 3] & (0x01 << (cur_node % 8))) == 0) {
if (counter < -delta_ter_check || counter > delta_ter_check) {
check_terrain_node(cur_node, false, false);
} else {
check_terrain_node(cur_node, false, true);
}
}
}
i++;
}
} else {
length = delta_x + 1;
while (i < length) {
x += change_x;
error_term += delta_y;
if (error_term >= delta_x) {
y += change_y;
error_term -= delta_x;
}
if (y >= TERRAIN_DEPTH || y < 0 || x < 0 || x >= TERRAIN_WIDTH) {
fvi_hit_data_ptr->hit_type[0] = HIT_OUT_OF_TERRAIN_BOUNDS;
goto check_big_objs;
}
for (counter = -delta_check; counter <= delta_check; counter++) {
new_y = y + counter;
if (new_y < 0) {
counter = -y;
new_y = 0;
}
if (new_y >= TERRAIN_DEPTH)
break;
// Check the current node for collisions -- chrishack -- This can be made iterative
cur_node = new_y * TERRAIN_DEPTH + x;
if ((fvi_terrain_visit_list[cur_node >> 3] & (0x01 << (cur_node % 8))) == 0) {
if (counter < -delta_ter_check || counter > delta_ter_check) {
check_terrain_node(cur_node, false, false);
} else {
check_terrain_node(cur_node, false, true);
}
}
}
i++;
}
}
ASSERT(x == x2 && y == y2);
check_big_objs: // Check Big objects
if (fvi_query_ptr->flags & FQ_CHECK_OBJS) {
for (i = 0; i < Num_big_objects; i++) {
ASSERT(BigObjectList[i] >= 0);
check_hit_obj(BigObjectList[i]);
// mprintf(0, "CHecking BIG %d\n", i);
}
} else {
if (!(fvi_query_ptr->flags & FQ_IGNORE_EXTERNAL_ROOMS))
for (i = 0; i < Num_big_objects; i++) {
if (Objects[BigObjectList[i]].type == OBJ_ROOM)
check_hit_obj(BigObjectList[i]);
// mprintf(0, "CHecking BIG %d\n", i);
}
}
return fvi_hit_data_ptr->hit_type[0];
}
// NOTE: CHRIS increased MAX_NEXT_PORTALS because radiosity rays tend to hit more portals
// than in game stuff. It has no performance effect; so, I should be fine.
#define MAX_NEXT_PORTALS 50
void fvi_rooms_objs(void) {
int objnum;
int i;
room *cur_room;
// first, see if vector hit any objects in this segment
if (!(fvi_query_ptr->flags & FQ_CHECK_OBJS))
return;
for (i = 0; i < fvi_num_rooms_visited; i++) {
cur_room = &Rooms[fvi_rooms_visited[i]];
ASSERT((fvi_visit_list[ROOMNUM(cur_room) >> 3] & (0x01 << (ROOMNUM(cur_room) % 8))) != 0);
ASSERT(ROOMNUM(cur_room) >= 0 && ROOMNUM(cur_room) <= Highest_room_index && cur_room->used);
for (objnum = cur_room->objects; objnum != -1; objnum = Objects[objnum].next) {
ASSERT(objnum != -1);
check_hit_obj(objnum);
}
}
}
// Flags for GetFaceAlpha()
#define FA_CONSTANT 1 // face has a constant alpha for the whole face
#define FA_VERTEX 2 // face has different alpha per vertex
#define FA_TRANSPARENT 4 // face has transparency (i.e. per pixel 1-bit alpha)
// Determines if a face draws with alpha blending
// Parameters: fp - pointer to the face in question
// bm_handle - the handle for the bitmap for this frame, or -1 if don't care about
// transparence Returns: bitmask describing the alpha blending for the face
// the return bits are the ATF_ flags in renderer.h
inline int GetFaceAlpha(face *fp, int bm_handle) {
int ret = AT_ALWAYS;
if (GameTextures[fp->tmap].flags & TF_SATURATE) {
if (fp->flags & FF_VERTEX_ALPHA)
ret = AT_SATURATE_TEXTURE_VERTEX;
else
ret = AT_SATURATE_TEXTURE;
} else {
// Check the face's texture for an alpha value
if (GameTextures[fp->tmap].alpha < 1.0)
ret |= ATF_CONSTANT;
// Someday we'll probably check the bitmap's alpha, too
// Check for vertex alpha flag
if (fp->flags & FF_VERTEX_ALPHA)
ret |= ATF_VERTEX;
// Check for transparency
if (GameBitmaps[bm_handle].format != BITMAP_FORMAT_4444 && GameTextures[fp->tmap].flags & TF_TMAP2)
ret |= ATF_TEXTURE;
}
return ret;
}
bool PhysPastPortal(const room *rp, portal *pp) {
// If we don't render the portal's faces, then we see through it
if (!(pp->flags & PF_RENDER_FACES))
return 1;
// Check if the face's texture has transparency
face *fp = &rp->faces[pp->portal_face];
int bm_handle = GetTextureBitmap(fp->tmap, 0);
if (GetFaceAlpha(fp, bm_handle))
return 1; // Face has alpha or transparency, so we can see through it
else
return 0; // Not transparent, so no render past
}
int fvi_room(int room_index, int from_portal, int room_obj) {
vector hit_point; // where we hit
float cur_dist; // distance to hit point
const room *cur_room = &Rooms[room_index];
int16_t i;
int next_portals[MAX_NEXT_PORTALS];
int num_next_portals = 0;
int next_portal_index;
int portal_num;
// vector col_point[32];
// vector col_normal[32];
object *this_obj;
uint8_t msector = 0;
if (fvi_min_xyz.x <= cur_room->bbf_min_xyz.x) {
msector |= 0x01;
}
if (fvi_min_xyz.y <= cur_room->bbf_min_xyz.y) {
msector |= 0x02;
}
if (fvi_min_xyz.z <= cur_room->bbf_min_xyz.z) {
msector |= 0x04;
}
if (fvi_max_xyz.x >= cur_room->bbf_max_xyz.x) {
msector |= 0x08;
}
if (fvi_max_xyz.y >= cur_room->bbf_max_xyz.y) {
msector |= 0x10;
}
if (fvi_max_xyz.z >= cur_room->bbf_max_xyz.z) {
msector |= 0x20;
}
if (fvi_query_ptr->thisobjnum >= 0)
this_obj = &Objects[fvi_query_ptr->thisobjnum];
else
this_obj = nullptr;
ASSERT(room_index >= 0 && room_index <= Highest_room_index);
ASSERT(Rooms[room_index].used);
ASSERT((fvi_visit_list[room_index >> 3] & (0x01 << (room_index % 8))) == 0);
if (!(cur_room->flags & RF_EXTERNAL)) {
fvi_visit_list[room_index >> 3] |= 0x01 << (room_index % 8);
fvi_rooms_visited[fvi_num_rooms_visited] = room_index;
fvi_num_rooms_visited++;
ASSERT(fvi_num_rooms_visited <= MAX_ROOMS);
}
if (fvi_query_ptr->flags & FQ_IGNORE_WALLS) {
vector face_normal;
vector *vertex_ptr_list[MAX_VERTS_PER_FACE];
int16_t count;
bool f_backface;
int face_info;
int j; //, k;
for (j = 0; j < cur_room->num_portals; j++) {
i = cur_room->portals[j].portal_face;
portal_num = cur_room->faces[i].portal_num;
// if ((msector & cur_room->faces[i].sector) != cur_room->faces[i].sector) continue;
if (!room_movement_AABB(&cur_room->faces[i]))
continue;
face_info = GetFacePhysicsFlags(cur_room, &cur_room->faces[i]);
if (face_info == FPT_IGNORE)
continue;
if (portal_num >= 0 && portal_num == from_portal)
continue;
f_backface = false;
for (count = 0; count < cur_room->faces[i].num_verts; count++)
vertex_ptr_list[count] = &cur_room->verts[cur_room->faces[i].face_verts[count]];
face_normal = cur_room->faces[i].normal;
// Add the portal if we are within a AABB of it.
if ((face_info & FPF_PORTAL)) {
// If we can cross a portal, add it to the next portal list if it is not already there
if (!(face_info & FPF_SOLID) && !(fvi_query_ptr->flags & FQ_SOLID_PORTALS)) {
bool f_add_next_portal;
f_add_next_portal = true;
for (next_portal_index = 0; next_portal_index < num_next_portals; next_portal_index++) {
if (next_portals[next_portal_index] == portal_num)
f_add_next_portal = false;
}
if (f_add_next_portal) {
ASSERT(num_next_portals < MAX_NEXT_PORTALS);
next_portals[num_next_portals++] = portal_num;
if ((fvi_query_ptr->flags & FQ_RECORD) && (face_info & FPF_RECORD)) {
ASSERT(Fvi_num_recorded_faces < MAX_RECORDED_FACES);
if (Fvi_num_recorded_faces < MAX_RECORDED_FACES) {
Fvi_recorded_faces[Fvi_num_recorded_faces].face_index = i;
Fvi_recorded_faces[Fvi_num_recorded_faces++].room_index = room_index;
}
}
}
}
}
}
} else {
const int16_t num_bbf_regions = cur_room->num_bbf_regions;
int16_t *num_faces_ptr = cur_room->num_bbf;
uint8_t *bbf_val = cur_room->bbf_list_sector;
vector *region_min = cur_room->bbf_list_min_xyz;
vector *region_max = cur_room->bbf_list_max_xyz;
int16_t **bbf_list_ptr = cur_room->bbf_list;
// Do the actual wall collsion stuff here!
for (int test1 = 0; test1 < num_bbf_regions; test1++) {
if (((*bbf_val) & msector) == (*bbf_val)) {
if (region_min->x > fvi_wall_max_xyz.x || region_min->y > fvi_wall_max_xyz.y ||
region_min->z > fvi_wall_max_xyz.z || region_max->x < fvi_wall_min_xyz.x ||
region_max->y < fvi_wall_min_xyz.y || region_max->z < fvi_wall_min_xyz.z)
goto skip_region;
if (fvi_zero_rad && FastVectorBBox((float *)region_min, (float *)region_max, (float *)fvi_query_ptr->p0,
(float *)&fvi_movement_delta) == false)
goto skip_region;
int16_t *cur_face_index_ptr = *bbf_list_ptr;
for (int sort_list_cur = 0; sort_list_cur < (*num_faces_ptr); sort_list_cur++) {
vector face_normal;
vector *vertex_ptr_list[MAX_VERTS_PER_FACE];
int face_hit_type;
vector wall_norm;
vector colp;
int16_t count;
bool f_backface;
int face_info;
face *cur_face;
i = *cur_face_index_ptr;
cur_face = &cur_room->faces[*cur_face_index_ptr];
cur_face_index_ptr++;
const vector *cf_max = &cur_face->max_xyz;
const vector *cf_min = &cur_face->min_xyz;
if (cf_min->x > fvi_wall_max_xyz.x || cf_min->y > fvi_wall_max_xyz.y || cf_min->z > fvi_wall_max_xyz.z ||
cf_max->x < fvi_wall_min_xyz.x || cf_max->y < fvi_wall_min_xyz.y || cf_max->z < fvi_wall_min_xyz.z)
continue;
if (fvi_zero_rad && !FastVectorBBox((float *)cf_min, (float *)cf_max, (float *)fvi_query_ptr->p0,
(float *)&fvi_movement_delta))
continue;
portal_num = cur_face->portal_num;
if (portal_num >= 0 && portal_num == from_portal)
continue;
face_info = GetFacePhysicsFlags(cur_room, cur_face);
if (face_info == FPT_IGNORE)
continue;
f_backface = false;
for (count = 0; count < cur_face->num_verts; count++)
vertex_ptr_list[count] = &cur_room->verts[cur_face->face_verts[count]];
face_normal = cur_face->normal;
// Add the portal if we are within a AABB of it.
if ((face_info & FPF_PORTAL)) {
if ((fvi_query_ptr->flags & FQ_RECORD) && (face_info & FPF_RECORD)) {
ASSERT(Fvi_num_recorded_faces < MAX_RECORDED_FACES);
if (Fvi_num_recorded_faces < MAX_RECORDED_FACES) {
Fvi_recorded_faces[Fvi_num_recorded_faces].face_index = i;
Fvi_recorded_faces[Fvi_num_recorded_faces++].room_index = room_index;
}
}
// If we can cross a portal, add it to the next portal list if it is not already there
if (!(face_info & FPF_SOLID) && !(fvi_query_ptr->flags & FQ_SOLID_PORTALS)) {
bool f_add_next_portal = true;
for (next_portal_index = 0; next_portal_index < num_next_portals; next_portal_index++) {
if (next_portals[next_portal_index] == portal_num) {
f_add_next_portal = false;
break;
}
}
if (f_add_next_portal) {
ASSERT(num_next_portals < MAX_NEXT_PORTALS);
next_portals[num_next_portals++] = portal_num;
}
}
if ((fvi_query_ptr->flags & FQ_IGNORE_RENDER_THROUGH_PORTALS) &&
(PhysPastPortal(cur_room, &cur_room->portals[portal_num]))) {
bool f_add_next_portal = true;
for (next_portal_index = 0; next_portal_index < num_next_portals; next_portal_index++) {
if (next_portals[next_portal_index] == portal_num) {
f_add_next_portal = false;
break;
}
}
if (f_add_next_portal) {
ASSERT(num_next_portals < MAX_NEXT_PORTALS);
next_portals[num_next_portals++] = portal_num;
}
continue;
}
}
// Did we hit this face?
if ((this_obj) && (this_obj->mtype.phys_info.flags & PF_POINT_COLLIDE_WALLS)) {
face_hit_type = check_line_to_face(&hit_point, &colp, &cur_dist, &wall_norm, fvi_query_ptr->p0,
&fvi_hit_data_ptr->hit_pnt, &face_normal, vertex_ptr_list,
cur_face->num_verts, 0.0f);
} else if ((this_obj) && (this_obj->flags & OF_POLYGON_OBJECT)) {
face_hit_type =
check_line_to_face(&hit_point, &colp, &cur_dist, &wall_norm, &fvi_wall_sphere_p0, &fvi_wall_sphere_p1,
&face_normal, vertex_ptr_list, cur_face->num_verts, fvi_wall_sphere_rad);
hit_point -= fvi_wall_sphere_offset;
} else {
face_hit_type = check_line_to_face(&hit_point, &colp, &cur_dist, &wall_norm, fvi_query_ptr->p0,
&fvi_hit_data_ptr->hit_pnt, &face_normal, vertex_ptr_list,
cur_face->num_verts, fvi_query_ptr->rad);
}
if ((((fvi_query_ptr->flags & FQ_OBJ_BACKFACE) && (cur_room->flags & RF_EXTERNAL)) ||
((fvi_query_ptr->flags & FQ_BACKFACE) && !(cur_room->flags & RF_EXTERNAL))) &&
(!face_hit_type)) {
face_normal *= -1.0f;
for (count = 0; count < cur_face->num_verts; count++)
vertex_ptr_list[cur_face->num_verts - count - 1] = &cur_room->verts[cur_face->face_verts[count]];
face_hit_type = check_line_to_face(&hit_point, &colp, &cur_dist, &wall_norm, fvi_query_ptr->p0,
&fvi_hit_data_ptr->hit_pnt, &face_normal, vertex_ptr_list,
cur_face->num_verts, fvi_query_ptr->rad);
f_backface = true;
}
if (face_hit_type && (face_info & FPF_TRANSPARENT) && (fvi_query_ptr->flags & FQ_TRANSPOINT) &&
CheckTransparentPoint(&colp, cur_room, i)) {
// Go through the hole
face_hit_type = HIT_NONE;
}
// If we hit the face...
if (face_hit_type) {
if ((fvi_query_ptr->flags & FQ_RECORD) && (face_info & FPF_RECORD) &&
!(Fvi_num_recorded_faces > 0 &&
Fvi_recorded_faces[Fvi_num_recorded_faces - 1].face_index == i &&
Fvi_recorded_faces[Fvi_num_recorded_faces - 1].room_index == room_index)) {
ASSERT(Fvi_num_recorded_faces < MAX_RECORDED_FACES);
if (Fvi_num_recorded_faces < MAX_RECORDED_FACES) {
Fvi_recorded_faces[Fvi_num_recorded_faces].face_index = i;
Fvi_recorded_faces[Fvi_num_recorded_faces++].room_index = room_index;
}
}
if (cur_dist <= fvi_collision_dist && (face_info & (FPF_SOLID | FPF_TRANSPARENT))) {
if ((cur_dist < fvi_collision_dist) || !(fvi_query_ptr->flags & FQ_MULTI_POINT)) {
fvi_hit_data_ptr->num_hits = 0;
fvi_collision_dist = cur_dist;
fvi_hit_data_ptr->hit_pnt = hit_point;
compute_movement_AABB();
} else if (fvi_hit_data_ptr->num_hits == MAX_HITS) {
goto ignore_hit;
}
if (f_backface)
fvi_hit_data_ptr->hit_type[fvi_hit_data_ptr->num_hits] = HIT_BACKFACE;
else
fvi_hit_data_ptr->hit_type[fvi_hit_data_ptr->num_hits] = HIT_WALL;
fvi_hit_data_ptr->hit_wallnorm[fvi_hit_data_ptr->num_hits] = wall_norm;
// fvi_hit_data_ptr->hit_seg = -1; -- set in the fvi_FindIntersection function
fvi_hit_data_ptr->hit_object[fvi_hit_data_ptr->num_hits] = room_obj;
fvi_hit_data_ptr->hit_face[fvi_hit_data_ptr->num_hits] = i;
fvi_hit_data_ptr->hit_face_room[fvi_hit_data_ptr->num_hits] = room_index; // Segment of the best hit
fvi_hit_data_ptr->hit_face_pnt[fvi_hit_data_ptr->num_hits] = colp;
fvi_hit_data_ptr->num_hits++;
}
}
}
}
skip_region:;
ignore_hit:;
num_faces_ptr++;
bbf_val++;
region_max++;
region_min++;
bbf_list_ptr++;
}
}
// repeated: ;
/* if(num_cols > 1)
{
int i;
vector new_normal;
float len;
for(i = 0; i < num_cols; i++)
{
new_normal += col_normal[i];
}
len = vm_NormalizeVector(&new_normal);
if(len == 0.0f)
{
mprintf(0, "PHYSICS WARNING: Normals cancal out\n");
new_normal = col_normal[0];
}
fvi_hit_data_ptr->hit_pnt = fvi_hit_data_ptr->hit_pnt - (fvi_query_ptr->rad * (new_normal));
}
*/
if (!(fvi_query_ptr->flags & FQ_SOLID_PORTALS)) {
// Accounts for doors that leave a
for (i = 0; i < cur_room->num_portals; i++) {
int c_room = cur_room->portals[i].croom;
if ((c_room > 0) && (Rooms[c_room].flags & RF_DOOR)) {
bool f_add_next_portal = true;
for (next_portal_index = 0; next_portal_index < num_next_portals; next_portal_index++) {
if (next_portals[next_portal_index] == i) {
f_add_next_portal = false;
break;
}
}
if (f_add_next_portal) {
ASSERT(num_next_portals < MAX_NEXT_PORTALS);
next_portals[num_next_portals++] = i;
}
}
}
// Check all potentially crossed portals
for (next_portal_index = 0; next_portal_index < num_next_portals; next_portal_index++) {
int connect_room;
portal_num = next_portals[next_portal_index];
connect_room = cur_room->portals[portal_num].croom;
if (!(Rooms[connect_room].flags & RF_EXTERNAL)) {
if ((fvi_visit_list[connect_room >> 3] & (0x01 << ((connect_room) % 8))) == 0) {
/*
mprintf(0, "A portal %d to room %d,from room %d,with %d cportal\n",
portal_num,
cur_room->portals[portal_num].croom,
room_index,
cur_room->portals[portal_num].cportal);
*/
fvi_room(connect_room, cur_room->portals[portal_num].cportal);
}
} else if (f_check_terrain) {
fvi_info hit_data_terrain = *fvi_hit_data_ptr;
fvi_query query_terrain = *fvi_query_ptr;
fvi_info *temp_hit_data = fvi_hit_data_ptr;
fvi_query *temp_query = fvi_query_ptr;
fvi_hit_data_ptr = &hit_data_terrain;
fvi_query_ptr = &query_terrain;
query_terrain.startroom = GetTerrainRoomFromPos(query_terrain.p0);
// mprintf(0, "We might go outside\n");
// This is quick, so do it here.
hit_data_terrain.hit_room = GetTerrainRoomFromPos(&hit_data_terrain.hit_pnt);
if (hit_data_terrain.hit_room == -1)
hit_data_terrain.hit_type[0] = HIT_OUT_OF_TERRAIN_BOUNDS;
// Find the hit data!!!
do_fvi_terrain();
// This is quick, so do it here.
hit_data_terrain.hit_room = GetTerrainRoomFromPos(&hit_data_terrain.hit_pnt);
if (hit_data_terrain.hit_room == -1)
hit_data_terrain.hit_type[0] = HIT_OUT_OF_TERRAIN_BOUNDS;
// Reset the fvi global pointers to handle in mine stuff.
fvi_hit_data_ptr = temp_hit_data;
fvi_query_ptr = temp_query;
// Make sure we register the hit
if (hit_data_terrain.hit_type[0] != HIT_NONE)
*fvi_hit_data_ptr = hit_data_terrain;
}
}
}
// quit_looking:
ASSERT(!(fvi_hit_data_ptr->hit_type[0] == HIT_OBJECT && fvi_hit_data_ptr->hit_object[0] == -1));
return fvi_hit_data_ptr->hit_type[0];
}
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