/*
* 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/editor/ScriptCompilerAPI.cpp $
* $Revision: 1.1.1.1 $
* $Date: 2003-08-26 03:57:38 $
* $Author: kevinb $
*
* Implementation files for for the script compiler API
*
* $Log: not supported by cvs2svn $
 *
 * 16    6/17/99 10:24a Kevin
 * Made things work in a release build
 *
 * 15    6/08/99 4:14p Jeff
 * added some #ifdefs for new editor, so it can be used in the new editor
 * project
 *
 * 14    2/23/99 11:52p Jeff
 * new script dll sync dialog
 *
 * 13    2/17/99 6:54p Jeff
 * added check box for auto check in/out scripts with levels...fix
 * checksum mprintf bug
 *
 * 12    2/17/99 3:24a Jeff
 * added checksum parameter
 *
 * 11    1/15/99 5:27p Jeff
 * possible long filename fix
 *
 * 10    1/13/99 5:00p Jeff
 * auto generate string table stuff
 *
 * 9     1/05/99 4:33p Jeff
 * oops, forgot STDCALL when making SaveRestoreState
 *
 * 8     12/31/98 2:37p Jeff
 * added SaveRestoreState import function
 *
 * 7     12/21/98 6:21p Jeff
 * added comments to generated blank scripts
 *
 * 6     12/18/98 4:32p Jeff
 * fixed code that creates empty script
 *
 * 5     12/18/98 2:37p Jeff
 * updated the create new script file
 *
 * 4     12/14/98 11:32a Jeff
 * started work on osiris load and bind functions
 *
 * 3     12/13/98 7:50p Jeff
 * automatically add new DLLs that aren't in the manage
 * system...implemented create new script function, even though it's still
 * in infancy.
 *
 * 2     12/13/98 3:09a Jeff
 * Initial creation, added ScriptCompile() function
*
* $NoKeywords: $
*/

#include "stdafx.h"
#include "ScriptCompilerAPI.h"
#include "appdatabase.h"
#include "descent.h"
#include "cfile.h"
#include "manage.h"
#include "pserror.h"
#include "mem.h"
#include "ddio.h"
#include "osiris_dll.h"
#include <stdarg.h>

#ifdef NEWEDITOR
#include "../neweditor/globals.h"
#endif

int ScriptCompile(tCompilerInfo *ci) {
  char Compiler_path[_MAX_PATH];
  int Warning_level = -1;
  int Debug_type = -1;
  int len = _MAX_PATH;

  if (!cfexist(ci->source_filename))
    return CERR_SOURCENOEXIST;

#ifndef NEWEDITOR
  // make sure there is a compiler defined
  if (Database->read("EditorCompiler", Compiler_path, &len)) {
    if (!cfexist(Compiler_path)) {
      OutrageMessageBox(
          "The configured virtual compiler (%s)\ncannot be found.  Please make sure\nyou have specified a proper path "
          "and\nthe file exists.  Go into the Script and\nLevel dialog to configure your compiler.",
          Compiler_path);
      return CERR_COMPILERMISSING;
    }
  } else {
    OutrageMessageBox(
        "You haven't configured a virtual compiler to use.\nPlease go into the Script and Level Interface\nof the "
        "editor and select the configure button\nto configure a virtual compiler to use.\nFind Jeff for help on this.");
    return CERR_NOCOMPILERDEFINED;
  }

  Database->read_int("EditorVCWarningLevel", &Warning_level);
  Database->read_int("EditorVCDebugLevel", &Debug_type);
#else
  // New Editor setup

  // Determine the compiler
  CString cs_Compiler_Path = AfxGetApp()->GetProfileString("settings", "EditorCompiler", "");
  if (cs_Compiler_Path.GetLength() > 1) {
    if (!cfexist(cs_Compiler_Path.GetBuffer(0))) {
      OutrageMessageBox(
          "The configured virtual compiler (%s)\ncannot be found.  Please make sure\nyou have specified a proper path "
          "and\nthe file exists.  Select the configure button\nto configure your virtual compiler.",
          cs_Compiler_Path.GetBuffer(0));
      return CERR_COMPILERMISSING;
    } else {
      // valid compiler
      strcpy(Compiler_path, cs_Compiler_Path.GetBuffer(0));
    }
  } else {
    OutrageMessageBox("You haven't configured a virtual compiler to use.\nPlease select the configure option\nto "
                      "configure a virtual compiler to use.");
    return CERR_NOCOMPILERDEFINED;
  }

  // Determine the Warning level
  Warning_level = AfxGetApp()->GetProfileInt("settings", "EditorVCWarningLevel", 3);
  ASSERT(Warning_level >= 0 && Warning_level <= 4);
  if (Warning_level < 0 || Warning_level > 4)
    Warning_level = 3;

  // Determine the Debug type
  Debug_type = AfxGetApp()->GetProfileInt("settings", "EditorVCDebugLevel", 2);
  ASSERT(Debug_type >= 0 && Debug_type <= 2);
  if (Debug_type < 0 || Debug_type > 2)
    Debug_type = 2;

#endif

  SECURITY_ATTRIBUTES sa = {0};
  STARTUPINFO si = {0};
  PROCESS_INFORMATION pi = {0};
  HANDLE hPipeOutputRead = NULL;
  HANDLE hPipeOutputWrite = NULL;
  HANDLE hPipeInputRead = NULL;
  HANDLE hPipeInputWrite = NULL;
  BOOL bTest = 0;
  DWORD dwNumberOfBytesRead = 0;
  CHAR szBuffer[256];

  sa.nLength = sizeof(sa);
  sa.bInheritHandle = TRUE;
  sa.lpSecurityDescriptor = NULL;

  // Create pipe for standard output redirection.
  CreatePipe(&hPipeOutputRead,  // read handle
             &hPipeOutputWrite, // write handle
             &sa,               // security attributes
             0                  // number of bytes reserved for pipe - 0 default
  );                            // Create pipe for standard input redirection.

  CreatePipe(&hPipeInputRead,  // read handle
             &hPipeInputWrite, // write handle
             &sa,              // security attributes
             0                 // number of bytes reserved for pipe - 0 default
  );

  // Make child process use hPipeOutputWrite as standard out,
  // and make sure it does not show on screen.
  si.cb = sizeof(si);
  si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
  si.wShowWindow = SW_HIDE;
  si.hStdInput = hPipeInputRead;
  si.hStdOutput = hPipeOutputWrite;
  si.hStdError = hPipeOutputWrite;

  CString cline;

  cline = Compiler_path;
  cline += " -f ";
  cline += "\"";
  cline += ci->source_filename;
  cline += "\"";
  cline += " -dir ";
  cline += LocalScriptDir;
  if (ci->script_type == ST_LEVEL)
    cline += " -level";
  switch (Warning_level) {
  case 0:
    cline += " -w 0";
    break;
  case 1:
    cline += " -w 1";
    break;
  case 2:
    cline += " -w 2";
    break;
  case 3:
    cline += " -w 3";
    break;
  case 4:
    cline += " -w 4";
    break;
  default:
    cline += " -w 3";
    break;
  }
  switch (Debug_type) {
  case 1:
    cline += " -d coff";
    break;
  case 2:
    cline += " -d c7";
    break;
  }

  // Game structure checksum
#ifndef NEWEDITOR
  char temp_c[128];
  sprintf(temp_c, " -checksum %lu", Osiris_game_checksum);
  cline += temp_c;
#endif

  CreateProcess(NULL, cline.GetBuffer(0), NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi);

  // Now that handles have been inherited, close it to be safe.
  // You don't want to read or write to them accidentally.
  CloseHandle(hPipeOutputWrite);
  CloseHandle(hPipeInputRead);

  // Now test to capture DOS application output by reading
  // hPipeOutputRead.  Could also write to DOS application
  // standard input by writing to hPipeInputWrite.
  CString temp;
  while (TRUE) {
    bTest = ReadFile(hPipeOutputRead,      // handle of the read end of our pipe
                     &szBuffer,            // address of buffer that receives data
                     256,                  // number of bytes to read
                     &dwNumberOfBytesRead, // address of number of bytes read
                     NULL                  // non-overlapped.
    );

    if (!bTest) {
      break;
    }

    // do something with data.
    szBuffer[dwNumberOfBytesRead] = 0; // null terminate

    if (ci->callback) {
      int new_line_count = 0;
      char *ptr = szBuffer;
      while (*ptr) {
        if (*ptr == '\n')
          new_line_count++;
        ptr++;
      }
      char *data, *d_ptr;
      d_ptr = data = (char *)mem_malloc(dwNumberOfBytesRead + 1 + new_line_count);
      if (data) {
        ptr = (char *)szBuffer;

        while (*ptr) {
          if (*ptr == '\n') {
            *d_ptr = '\r';
            d_ptr++;
            *d_ptr = '\n';
            d_ptr++;
          } else if (*ptr != '\r') {
            *d_ptr = *ptr;
            d_ptr++;
          }
          ptr++;
        }
        *d_ptr = '\0';

        (*ci->callback)(data);
        mem_free(data);
      }
    }
  }

  // Wait for spawn to finish.
  WaitForSingleObject(pi.hProcess, INFINITE);

  // Close all remaining handles
  CloseHandle(pi.hProcess);
  CloseHandle(hPipeOutputRead);
  CloseHandle(hPipeInputWrite);

  return CERR_NOERR;
}

bool ScriptCreateEmptyLevelScript(char *filename);
bool ScriptCreateEmptyGameScript(char *filename);
bool ScriptCreateEmptyScript(char *filename, uint8_t script_type) {
  if (cfexist(filename)) {
    char buffer[512];
    sprintf(buffer, "A script by the name of %s\nalready exists.", filename);
    AfxMessageBox(buffer, MB_OK);
    return false;
  }

  switch (script_type) {
  case ST_GAME:
    return ScriptCreateEmptyGameScript(filename);
    break;
  case ST_LEVEL:
    return ScriptCreateEmptyLevelScript(filename);
    break;
  }

  return false;
}

#define VERSION "0.1"
#define O(x) outputtofile x
CFILE *CurrentFile;

void outputtofile(char *format, ...) {
  char buffer[1024];
  va_list marker;
  va_start(marker, format);
  std::vsprintf(buffer, format, marker);
  cf_WriteString(CurrentFile, buffer);
  va_end(marker);
}

bool ScriptCreateEmptyLevelScript(char *filename) {
  char fullpath[_MAX_PATH];
  ddio_MakePath(fullpath, LocalScriptDir, filename, NULL);
  CurrentFile = cfopen(fullpath, "wt");
  if (!CurrentFile)
    return false;

  O(("// %s", filename));
  O(("// %s", VERSION));
  O(("#include <stdio.h>"));
  O(("#include <stdlib.h>"));
  O(("#include <string.h>"));
  O(("#include \"osiris_import.h\""));
  O(("#include \"osiris_common.h\""));
  O((""));

  O(("#ifdef _MSC_VER		//Visual C++ Build"));
  O(("#define STDCALL		__stdcall"));
  O(("#define STDCALLPTR	*STDCALL"));
  O(("#else				//Non-Visual C++ Build"));
  O(("#define STDCALL __attribute__((stdcall))"));
  O(("#define STDCALLPTR	STDCALL*"));
  O(("#endif"));
  O((""));

  O(("#ifdef __cplusplus"));
  O(("extern \"C\"{"));
  O(("#endif"));
  O(("char	STDCALL InitializeDLL(tOSIRISModuleInit *func_list);"));
  O(("void	STDCALL ShutdownDLL(void);"));
  O(("int     STDCALL GetGOScriptID(const char *name,uint8_t is_door);"));
  O(("void	STDCALLPTR CreateInstance(int id);"));
  O(("void	STDCALL DestroyInstance(int id,void *ptr);"));
  O(("int16_t	STDCALL CallInstanceEvent(int id,void *ptr,int event,tOSIRISEventInfo *data);"));
  O(("int		STDCALL GetTriggerScriptID(int trigger_room, int trigger_face );"));
  O(("int		STDCALL GetCOScriptList( int **list, int **id_list );"));
  O(("int		STDCALL SaveRestoreState( void *file_ptr, uint8_t saving_state );"));
  O(("#ifdef __cplusplus"));
  O(("}"));
  O(("#endif"));
  O((""));

  O(("int String_table_size = 0;"));
  O(("char **String_table = NULL;"));
  O(("static const char *_Error_string = \"!!ERROR MISSING STRING!!\";"));
  O(("static const char *_Empty_string = \"\";"));
  O(("const char *GetStringFromTable(int index)"));
  O(("{"));
  O(("	if( (index<0) || (index>=String_table_size) )"));
  O(("		return _Error_string;"));
  O(("	if(!String_table[index])"));
  O(("		return _Empty_string;"));
  O(("		return String_table[index];"));
  O(("}"));
  O(("#define TXT(x) GetStringFromTable(x)"));

  O(("//	InitializeDLL"));
  O(("//	Purpose:"));
  O(("//		This function gets called when the DLL first gets loaded.  It will only be called once (until "
     "the"));
  O(("//	DLL is unloaded).  Passed in is a struct of data passed from the game needed for the DLL to interact"));
  O(("//	with D3.  Usually this function will just call osicommon_Initialize(), which sets up the imported"));
  O(("//	functions.  However, you can alloc some memory or whatever in this function, and free it in "
     "ShutdownDLL()."));
  O(("//	Note: You cannot call any imported functions until osicommon_Initialize() is called."));
  O(("//	Returns 1 if initialization went ok, 0 if there was an error and the DLL should not be loaded."));
  O(("char STDCALL InitializeDLL(tOSIRISModuleInit *func_list)"));
  O(("{"));
  O(("	osicommon_Initialize(func_list);"));
  O(("	String_table_size = func_list->string_count;"));
  O(("	String_table = func_list->string_table;"));
  O(("	if(func_list->game_checksum!=CHECKSUM)"));
  O(("	{ "));
  O(("		mprintf(0,\"Game-Checksum FAIL!!! (%%ul!=%%ul)\\n\",func_list->game_checksum,CHECKSUM);"));
  O(("		mprintf(0,\"RECOMPILE YOUR SCRIPTS!!!\\n\");"));
  O(("		return 0;"));
  O(("	}"));
  O(("	return 1;"));
  O(("}"));
  O((""));

  O(("//	ShutdownDLL"));
  O(("//	Purpose:"));
  O(("//		This function is called right before a DLL is about to be unloaded from memory.  You can "
     "free"));
  O(("//	any unfree'd memory, or anything else you need to do.  Don't worry about destroying any instances"));
  O(("//	of scripts, as they will all be automatically destroyed before this function is called.  The"));
  O(("//	same goes for any memory allocated with Scrpt_MemAlloc(), as this will automatically be freed"));
  O(("//	when a scripts instance is destroyed."));
  O(("void STDCALL ShutdownDLL(void)"));
  O(("{"));
  O(("}"));
  O((""));

  O(("//	GetGOScriptID"));
  O(("//	Purpose:"));
  O(("//		Given the name of the object (from its pagename), this function will search through its"));
  O(("//	list of General Object Scripts for a script with a matching name (to see if there is a script"));
  O(("//	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID"));
  O(("//	is to be returned back to Descent 3.  This ID will be used from here on out for all future"));
  O(("//	interaction with the DLL.  Since doors are not part of the generic object's, it's possible"));
  O(("//	for a door to have the same name as a generic object (OBJ_POWERUP, OBJ_BUILDING, OBJ_CLUTTER"));
  O(("//	or OBJ_ROBOT), therefore, a 1 is passed in for isdoor if the given object name refers to a"));
  O(("//	door, else it is a 0.  The return value is the unique identifier, else -1 if the script"));
  O(("//	does not exist in the DLL."));
  O(("//	The only reserved ID is 0, which must be used for the level script"));
  O(("int STDCALL GetGOScriptID(const char *name,uint8_t isdoor)"));
  O(("{"));
  O(("	return -1;"));
  O(("}"));
  O((""));

  O(("//	CreateInstance"));
  O(("//	Purpose:"));
  O(("//		Given an ID from a call to GetGOScriptID(), GetTriggerScriptID() or GetCOScriptList(), this"));
  O(("//	function will create a new instance for that particular script (by allocating and initializing"));
  O(("//	memory, etc.).  A pointer to this instance is to be returned back to Descent 3.  This pointer will"));
  O(("//	be passed around, along with the ID for CallInstanceEvent() and DestroyInstance().  Return NULL"));
  O(("//	if there was an error."));
  O(("//	The only reserved ID is 0, which must be used for the level script"));
  O(("void STDCALLPTR CreateInstance(int id)"));
  O(("{"));
  O(("	return NULL;"));
  O(("}"));
  O((""));

  O(("//	DestroyInstance"));
  O(("//	Purpose:"));
  O(("//		Given an ID, and a pointer to a particular instance of a script, this function will delete "
     "and"));
  O(("//	destruct all information associated with that script, so it will no longer exist."));
  O(("void STDCALL DestroyInstance(int id,void *ptr)"));
  O(("{"));
  O(("}"));
  O((""));

  O(("//	CallInstanceEvent"));
  O(("//	Purpose:"));
  O(("//		Given an ID, a pointer to a script instance, an event and a pointer to the struct of"));
  O(("//	information about the event, this function will translate who this event belongs to and"));
  O(("//	passes the event to that instance of the script to be handled.  Return a combination of"));
  O(("//	CONTINUE_CHAIN and CONTINUE_DEFAULT, to give instructions on what to do based on the"));
  O(("//	event. CONTINUE_CHAIN means to continue through the chain of scripts (custom script, level"));
  O(("//	script, mission script, and finally default script).  If CONTINUE_CHAIN is not specified,"));
  O(("//	than the chain is broken and those scripts of lower priority will never get the event.  Return"));
  O(("//	CONTINUE_DEFAULT in order to tell D3 if you want process the normal action that is built into"));
  O(("//	the game for that event.  This only pertains to certain events.  If the chain continues"));
  O(("//	after this script, than the CONTINUE_DEFAULT setting will be overridden by lower priority"));
  O(("//	scripts return value."));
  O(("//	The only reserved ID is 0, which must be used for the level script"));
  O(("int16_t STDCALL CallInstanceEvent(int id,void *ptr,int event,tOSIRISEventInfo *data)"));
  O(("{"));
  O(("	return CONTINUE_CHAIN|CONTINUE_DEFAULT;"));
  O(("}"));
  O((""));

  O(("//	GetTriggerScriptID"));
  O(("//	Purpose:"));
  O(("//		Given a room and face number, this function will return a unique ID (global DLL unique)"));
  O(("//	in which Descent 3 should use for all future interaction will the DLL when refering to"));
  O(("//	this trigger.  Return -1 if there is no trigger script available for the specified trigger."));
  O(("//	The only reserved ID is 0, which must be used for the level script"));
  O(("int	STDCALL GetTriggerScriptID(int trigger_room,int trigger_face)"));
  O(("{"));
  O(("	return -1;"));
  O(("}"));
  O((""));

  O(("//	GetCOScriptList"));
  O(("//	Purpose:"));
  O(("//		This function returns the pointers to the 2 arrays that Descent 3 should use to determine"));
  O(("//	what object's have custom scripts in this level DLL.  list should be set to point to the array"));
  O(("//	of object handles that have custom scripts in this DLL.  id_list should be set to point to the"));
  O(("//	corresponding array of unique IDs that match with the object handle list. This function should"));
  O(("//	return the size of the arrays returned...if no custom scripts are available, than this function"));
  O(("//	returns 0."));
  O(("//	The only reserved ID is 0, which must be used for the level script"));
  O(("int	STDCALL GetCOScriptList( int **list, int **id_list )"));
  O(("{"));
  O(("	return 0;"));
  O(("}"));

  O(("//	SaveRestoreState"));
  O(("//	Purpose:"));
  O(("//		This function is called when Descent 3 is saving or restoring the game state.  In this "
     "function"));
  O(("//	you should save/restore any global data that you want preserved through load/save (which includes"));
  O(("//	demos).  You must be very careful with this function, corrupting the file (reading or writing too"));
  O(("//	much or too little) may be hazardous to the game (possibly making it impossible to restore the"));
  O(("//	state).  It would be best to use version information to keep older versions of saved states still"));
  O(("//	able to be used.  IT IS VERY IMPORTANT WHEN SAVING THE STATE TO RETURN THE NUMBER OF _BYTES_ WROTE"));
  O(("//	TO THE FILE.  When restoring the data, the return value is ignored.  saving_state is 1 when you "
     "should"));
  O(("//	write data to the file_ptr, 0 when you should read in the data."));
  O(("int STDCALL SaveRestoreState( void *file_ptr, uint8_t saving_state )"));
  O(("{"));
  O(("	return 0;"));
  O(("}"));
  O((""));

  cfclose(CurrentFile);
  return true;
}

bool ScriptCreateEmptyGameScript(char *filename) {
  char fullpath[_MAX_PATH];
  ddio_MakePath(fullpath, LocalScriptDir, filename, NULL);
  CurrentFile = cfopen(fullpath, "wt");
  if (!CurrentFile)
    return false;

  O(("// %s", filename));
  O(("// %s", VERSION));
  O(("#include <stdio.h>"));
  O(("#include <stdlib.h>"));
  O(("#include <string.h>"));
  O(("#include \"osiris_import.h\""));
  O(("#include \"osiris_common.h\""));
  O((""));

  O(("#ifdef _MSC_VER		//Visual C++ Build"));
  O(("#define STDCALL		__stdcall"));
  O(("#define STDCALLPTR	*STDCALL"));
  O(("#else				//Non-Visual C++ Build"));
  O(("#define STDCALL __attribute__((stdcall))"));
  O(("#define STDCALLPTR	STDCALL*"));
  O(("#endif"));
  O((""));

  O(("#ifdef __cplusplus"));
  O(("extern \"C\"{"));
  O(("#endif"));
  O(("char	STDCALL InitializeDLL(tOSIRISModuleInit *func_list);"));
  O(("void	STDCALL ShutdownDLL(void);"));
  O(("int     STDCALL GetGOScriptID(const char *name,uint8_t isdoor);"));
  O(("void	STDCALLPTR CreateInstance(int id);"));
  O(("void	STDCALL DestroyInstance(int id,void *ptr);"));
  O(("int16_t	STDCALL CallInstanceEvent(int id,void *ptr,int event,tOSIRISEventInfo *data);"));
  O(("int		STDCALL SaveRestoreState( void *file_ptr, uint8_t saving_state );"));
  O(("#ifdef __cplusplus"));
  O(("}"));
  O(("#endif"));
  O((""));

  O(("int String_table_size = 0;"));
  O(("char **String_table = NULL;"));
  O(("static char *_Error_string = \"!!ERROR MISSING STRING!!\";"));
  O(("static char *_Empty_string = \"\";"));
  O(("const char *GetStringFromTable(int index)"));
  O(("{"));
  O(("	if( (index<0) || (index>=String_table_size) )"));
  O(("		return _Error_string;"));
  O(("	if(!String_table[index])"));
  O(("		return _Empty_string;"));
  O(("		return String_table[index];"));
  O(("}"));
  O(("#define TXT(x) GetStringFromTable(x)"));

  O(("//	InitializeDLL"));
  O(("//	Purpose:"));
  O(("//		This function gets called when the DLL first gets loaded.  It will only be called once (until "
     "the"));
  O(("//	DLL is unloaded).  Passed in is a struct of data passed from the game needed for the DLL to interact"));
  O(("//	with D3.  Usually this function will just call osicommon_Initialize(), which sets up the imported"));
  O(("//	functions.  However, you can alloc some memory or whatever in this function, and free it in "
     "ShutdownDLL()."));
  O(("//	Note: You cannot call any imported functions until osicommon_Initialize() is called."));
  O(("//	Returns 1 if initialization went ok, 0 if there was an error and the DLL should not be loaded."));
  O(("char STDCALL InitializeDLL(tOSIRISModuleInit *func_list)"));
  O(("{"));
  O(("	osicommon_Initialize((tOSIRISModuleInit *)func_list);"));
  O(("	String_table_size = func_list->string_count;"));
  O(("	String_table = func_list->string_table;"));
  O(("	if(func_list->game_checksum!=CHECKSUM)"));
  O(("	{ "));
  O(("		mprintf(0,\"Game-Checksum FAIL!!! (%%ul!=%%ul)\\n\",func_list->game_checksum,CHECKSUM);"));
  O(("		mprintf(0,\"RECOMPILE YOUR SCRIPTS!!!\\n\");"));
  O(("		return 0;"));
  O(("	}"));
  O(("	return 1;"));
  O(("}"));
  O((""));

  O(("//	ShutdownDLL"));
  O(("//	Purpose:"));
  O(("//		This function is called right before a DLL is about to be unloaded from memory.  You can "
     "free"));
  O(("//	any unfree'd memory, or anything else you need to do.  Don't worry about destroying any instances"));
  O(("//	of scripts, as they will all be automatically destroyed before this function is called.  The"));
  O(("//	same goes for any memory allocated with Scrpt_MemAlloc(), as this will automatically be freed"));
  O(("//	when a scripts instance is destroyed."));
  O(("void STDCALL ShutdownDLL(void)"));
  O(("{"));
  O(("}"));
  O((""));

  O(("//	GetGOScriptID"));
  O(("//	Purpose:"));
  O(("//		Given the name of the object (from its pagename), this function will search through its"));
  O(("//	list of General Object Scripts for a script with a matching name (to see if there is a script"));
  O(("//	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID"));
  O(("//	is to be returned back to Descent 3.  This ID will be used from here on out for all future"));
  O(("//	interaction with the DLL.  Since doors are not part of the generic object's, it's possible"));
  O(("//	for a door to have the same name as a generic object (OBJ_POWERUP, OBJ_BUILDING, OBJ_CLUTTER"));
  O(("//	or OBJ_ROBOT), therefore, a 1 is passed in for isdoor if the given object name refers to a"));
  O(("//	door, else it is a 0.  The return value is the unique identifier, else -1 if the script"));
  O(("//	does not exist in the DLL."));
  O(("int STDCALL GetGOScriptID(const char *name,uint8_t isdoor)"));
  O(("{"));
  O(("	return -1;"));
  O(("}"));
  O((""));

  O(("//	CreateInstance"));
  O(("//	Purpose:"));
  O(("//		Given an ID from a call to GetGOScriptID(), this function will create a new instance for "
     "that"));
  O(("//	particular script (by allocating and initializing memory, etc.).  A pointer to this instance"));
  O(("//	is to be returned back to Descent 3.  This pointer will be passed around, along with the ID"));
  O(("//	for CallInstanceEvent() and DestroyInstance().  Return NULL if there was an error."));
  O(("void STDCALLPTR CreateInstance(int id)"));
  O(("{"));
  O(("	return NULL;"));
  O(("}"));
  O((""));

  O(("//	DestroyInstance"));
  O(("//	Purpose:"));
  O(("//		Given an ID, and a pointer to a particular instance of a script, this function will delete "
     "and"));
  O(("//	destruct all information associated with that script, so it will no longer exist."));
  O(("void STDCALL DestroyInstance(int id,void *ptr)"));
  O(("{"));
  O(("}"));
  O((""));

  O(("//	CallInstanceEvent"));
  O(("//	Purpose:"));
  O(("//		Given an ID, a pointer to a script instance, an event and a pointer to the struct of"));
  O(("//	information about the event, this function will translate who this event belongs to and"));
  O(("//	passes the event to that instance of the script to be handled.  Return a combination of"));
  O(("//	CONTINUE_CHAIN and CONTINUE_DEFAULT, to give instructions on what to do based on the"));
  O(("//	event. CONTINUE_CHAIN means to continue through the chain of scripts (custom script, level"));
  O(("//	script, mission script, and finally default script).  If CONTINUE_CHAIN is not specified,"));
  O(("//	than the chain is broken and those scripts of lower priority will never get the event.  Return"));
  O(("//	CONTINUE_DEFAULT in order to tell D3 if you want process the normal action that is built into"));
  O(("//	the game for that event.  This only pertains to certain events.  If the chain continues"));
  O(("//	after this script, than the CONTINUE_DEFAULT setting will be overridden by lower priority"));
  O(("//	scripts return value."));
  O(("int16_t STDCALL CallInstanceEvent(int id,void *ptr,int event,tOSIRISEventInfo *data)"));
  O(("{"));
  O(("	return CONTINUE_CHAIN|CONTINUE_DEFAULT;"));
  O(("}"));
  O((""));

  O(("//	SaveRestoreState"));
  O(("//	Purpose:"));
  O(("//		This function is called when Descent 3 is saving or restoring the game state.  In this "
     "function"));
  O(("//	you should save/restore any global data that you want preserved through load/save (which includes"));
  O(("//	demos).  You must be very careful with this function, corrupting the file (reading or writing too"));
  O(("//	much or too little) may be hazardous to the game (possibly making it impossible to restore the"));
  O(("//	state).  It would be best to use version information to keep older versions of saved states still"));
  O(("//	able to be used.  IT IS VERY IMPORTANT WHEN SAVING THE STATE TO RETURN THE NUMBER OF _BYTES_ WROTE"));
  O(("//	TO THE FILE.  When restoring the data, the return value is ignored.  saving_state is 1 when you "
     "should"));
  O(("//	write data to the file_ptr, 0 when you should read in the data."));
  O(("int STDCALL SaveRestoreState( void *file_ptr, uint8_t saving_state )"));
  O(("{"));
  O(("	return 0;"));
  O(("}"));
  O((""));

  cfclose(CurrentFile);
  return true;
}