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Diffstat (limited to 'ioq3-r437/src/botlib/botlib.h')
| -rw-r--r-- | ioq3-r437/src/botlib/botlib.h | 516 |
1 files changed, 0 insertions, 516 deletions
diff --git a/ioq3-r437/src/botlib/botlib.h b/ioq3-r437/src/botlib/botlib.h deleted file mode 100644 index a3f75161..00000000 --- a/ioq3-r437/src/botlib/botlib.h +++ /dev/null @@ -1,516 +0,0 @@ -/* -=========================================================================== -Copyright (C) 1999-2005 Id Software, Inc. - -This file is part of Quake III Arena source code. - -Quake III Arena source code 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 2 of the License, -or (at your option) any later version. - -Quake III Arena source code 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 Quake III Arena source code; if not, write to the Free Software -Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -=========================================================================== -*/ -// -/***************************************************************************** - * name: botlib.h - * - * desc: bot AI library - * - * $Archive: /source/code/game/botai.h $ - * - *****************************************************************************/ - -#define BOTLIB_API_VERSION 2 - -struct aas_clientmove_s; -struct aas_entityinfo_s; -struct aas_areainfo_s; -struct aas_altroutegoal_s; -struct aas_predictroute_s; -struct bot_consolemessage_s; -struct bot_match_s; -struct bot_goal_s; -struct bot_moveresult_s; -struct bot_initmove_s; -struct weaponinfo_s; - -#define BOTFILESBASEFOLDER "botfiles" -//debug line colors -#define LINECOLOR_NONE -1 -#define LINECOLOR_RED 1//0xf2f2f0f0L -#define LINECOLOR_GREEN 2//0xd0d1d2d3L -#define LINECOLOR_BLUE 3//0xf3f3f1f1L -#define LINECOLOR_YELLOW 4//0xdcdddedfL -#define LINECOLOR_ORANGE 5//0xe0e1e2e3L - -//Print types -#define PRT_MESSAGE 1 -#define PRT_WARNING 2 -#define PRT_ERROR 3 -#define PRT_FATAL 4 -#define PRT_EXIT 5 - -//console message types -#define CMS_NORMAL 0 -#define CMS_CHAT 1 - -//botlib error codes -#define BLERR_NOERROR 0 //no error -#define BLERR_LIBRARYNOTSETUP 1 //library not setup -#define BLERR_INVALIDENTITYNUMBER 2 //invalid entity number -#define BLERR_NOAASFILE 3 //no AAS file available -#define BLERR_CANNOTOPENAASFILE 4 //cannot open AAS file -#define BLERR_WRONGAASFILEID 5 //incorrect AAS file id -#define BLERR_WRONGAASFILEVERSION 6 //incorrect AAS file version -#define BLERR_CANNOTREADAASLUMP 7 //cannot read AAS file lump -#define BLERR_CANNOTLOADICHAT 8 //cannot load initial chats -#define BLERR_CANNOTLOADITEMWEIGHTS 9 //cannot load item weights -#define BLERR_CANNOTLOADITEMCONFIG 10 //cannot load item config -#define BLERR_CANNOTLOADWEAPONWEIGHTS 11 //cannot load weapon weights -#define BLERR_CANNOTLOADWEAPONCONFIG 12 //cannot load weapon config - -//action flags -#define ACTION_ATTACK 0x0000001 -#define ACTION_USE 0x0000002 -#define ACTION_RESPAWN 0x0000008 -#define ACTION_JUMP 0x0000010 -#define ACTION_MOVEUP 0x0000020 -#define ACTION_CROUCH 0x0000080 -#define ACTION_MOVEDOWN 0x0000100 -#define ACTION_MOVEFORWARD 0x0000200 -#define ACTION_MOVEBACK 0x0000800 -#define ACTION_MOVELEFT 0x0001000 -#define ACTION_MOVERIGHT 0x0002000 -#define ACTION_DELAYEDJUMP 0x0008000 -#define ACTION_TALK 0x0010000 -#define ACTION_GESTURE 0x0020000 -#define ACTION_WALK 0x0080000 -#define ACTION_AFFIRMATIVE 0x0100000 -#define ACTION_NEGATIVE 0x0200000 -#define ACTION_GETFLAG 0x0800000 -#define ACTION_GUARDBASE 0x1000000 -#define ACTION_PATROL 0x2000000 -#define ACTION_FOLLOWME 0x8000000 - -//the bot input, will be converted to an usercmd_t -typedef struct bot_input_s -{ - float thinktime; //time since last output (in seconds) - vec3_t dir; //movement direction - float speed; //speed in the range [0, 400] - vec3_t viewangles; //the view angles - int actionflags; //one of the ACTION_? flags - int weapon; //weapon to use -} bot_input_t; - -#ifndef BSPTRACE - -#define BSPTRACE - -//bsp_trace_t hit surface -typedef struct bsp_surface_s -{ - char name[16]; - int flags; - int value; -} bsp_surface_t; - -//remove the bsp_trace_s structure definition l8r on -//a trace is returned when a box is swept through the world -typedef struct bsp_trace_s -{ - qboolean allsolid; // if true, plane is not valid - qboolean startsolid; // if true, the initial point was in a solid area - float fraction; // time completed, 1.0 = didn't hit anything - vec3_t endpos; // final position - cplane_t plane; // surface normal at impact - float exp_dist; // expanded plane distance - int sidenum; // number of the brush side hit - bsp_surface_t surface; // the hit point surface - int contents; // contents on other side of surface hit - int ent; // number of entity hit -} bsp_trace_t; - -#endif // BSPTRACE - -//entity state -typedef struct bot_entitystate_s -{ - int type; // entity type - int flags; // entity flags - vec3_t origin; // origin of the entity - vec3_t angles; // angles of the model - vec3_t old_origin; // for lerping - vec3_t mins; // bounding box minimums - vec3_t maxs; // bounding box maximums - int groundent; // ground entity - int solid; // solid type - int modelindex; // model used - int modelindex2; // weapons, CTF flags, etc - int frame; // model frame number - int event; // impulse events -- muzzle flashes, footsteps, etc - int eventParm; // even parameter - int powerups; // bit flags - int weapon; // determines weapon and flash model, etc - int legsAnim; // mask off ANIM_TOGGLEBIT - int torsoAnim; // mask off ANIM_TOGGLEBIT -} bot_entitystate_t; - -//bot AI library exported functions -typedef struct botlib_import_s -{ - //print messages from the bot library - void (QDECL *Print)(int type, char *fmt, ...); - //trace a bbox through the world - void (*Trace)(bsp_trace_t *trace, vec3_t start, vec3_t mins, vec3_t maxs, vec3_t end, int passent, int contentmask); - //trace a bbox against a specific entity - void (*EntityTrace)(bsp_trace_t *trace, vec3_t start, vec3_t mins, vec3_t maxs, vec3_t end, int entnum, int contentmask); - //retrieve the contents at the given point - int (*PointContents)(vec3_t point); - //check if the point is in potential visible sight - int (*inPVS)(vec3_t p1, vec3_t p2); - //retrieve the BSP entity data lump - char *(*BSPEntityData)(void); - // - void (*BSPModelMinsMaxsOrigin)(int modelnum, vec3_t angles, vec3_t mins, vec3_t maxs, vec3_t origin); - //send a bot client command - void (*BotClientCommand)(int client, char *command); - //memory allocation - void *(*GetMemory)(int size); // allocate from Zone - void (*FreeMemory)(void *ptr); // free memory from Zone - int (*AvailableMemory)(void); // available Zone memory - void *(*HunkAlloc)(int size); // allocate from hunk - //file system access - int (*FS_FOpenFile)( const char *qpath, fileHandle_t *file, fsMode_t mode ); - int (*FS_Read)( void *buffer, int len, fileHandle_t f ); - int (*FS_Write)( const void *buffer, int len, fileHandle_t f ); - void (*FS_FCloseFile)( fileHandle_t f ); - int (*FS_Seek)( fileHandle_t f, long offset, int origin ); - //debug visualisation stuff - int (*DebugLineCreate)(void); - void (*DebugLineDelete)(int line); - void (*DebugLineShow)(int line, vec3_t start, vec3_t end, int color); - // - int (*DebugPolygonCreate)(int color, int numPoints, vec3_t *points); - void (*DebugPolygonDelete)(int id); -} botlib_import_t; - -typedef struct aas_export_s -{ - //----------------------------------- - // be_aas_entity.h - //----------------------------------- - void (*AAS_EntityInfo)(int entnum, struct aas_entityinfo_s *info); - //----------------------------------- - // be_aas_main.h - //----------------------------------- - int (*AAS_Initialized)(void); - void (*AAS_PresenceTypeBoundingBox)(int presencetype, vec3_t mins, vec3_t maxs); - float (*AAS_Time)(void); - //-------------------------------------------- - // be_aas_sample.c - //-------------------------------------------- - int (*AAS_PointAreaNum)(vec3_t point); - int (*AAS_PointReachabilityAreaIndex)( vec3_t point ); - int (*AAS_TraceAreas)(vec3_t start, vec3_t end, int *areas, vec3_t *points, int maxareas); - int (*AAS_BBoxAreas)(vec3_t absmins, vec3_t absmaxs, int *areas, int maxareas); - int (*AAS_AreaInfo)( int areanum, struct aas_areainfo_s *info ); - //-------------------------------------------- - // be_aas_bspq3.c - //-------------------------------------------- - int (*AAS_PointContents)(vec3_t point); - int (*AAS_NextBSPEntity)(int ent); - int (*AAS_ValueForBSPEpairKey)(int ent, char *key, char *value, int size); - int (*AAS_VectorForBSPEpairKey)(int ent, char *key, vec3_t v); - int (*AAS_FloatForBSPEpairKey)(int ent, char *key, float *value); - int (*AAS_IntForBSPEpairKey)(int ent, char *key, int *value); - //-------------------------------------------- - // be_aas_reach.c - //-------------------------------------------- - int (*AAS_AreaReachability)(int areanum); - //-------------------------------------------- - // be_aas_route.c - //-------------------------------------------- - int (*AAS_AreaTravelTimeToGoalArea)(int areanum, vec3_t origin, int goalareanum, int travelflags); - int (*AAS_EnableRoutingArea)(int areanum, int enable); - int (*AAS_PredictRoute)(struct aas_predictroute_s *route, int areanum, vec3_t origin, - int goalareanum, int travelflags, int maxareas, int maxtime, - int stopevent, int stopcontents, int stoptfl, int stopareanum); - //-------------------------------------------- - // be_aas_altroute.c - //-------------------------------------------- - int (*AAS_AlternativeRouteGoals)(vec3_t start, int startareanum, vec3_t goal, int goalareanum, int travelflags, - struct aas_altroutegoal_s *altroutegoals, int maxaltroutegoals, - int type); - //-------------------------------------------- - // be_aas_move.c - //-------------------------------------------- - int (*AAS_Swimming)(vec3_t origin); - int (*AAS_PredictClientMovement)(struct aas_clientmove_s *move, - int entnum, vec3_t origin, - int presencetype, int onground, - vec3_t velocity, vec3_t cmdmove, - int cmdframes, - int maxframes, float frametime, - int stopevent, int stopareanum, int visualize); -} aas_export_t; - -typedef struct ea_export_s -{ - //ClientCommand elementary actions - void (*EA_Command)(int client, char *command ); - void (*EA_Say)(int client, char *str); - void (*EA_SayTeam)(int client, char *str); - // - void (*EA_Action)(int client, int action); - void (*EA_Gesture)(int client); - void (*EA_Talk)(int client); - void (*EA_Attack)(int client); - void (*EA_Use)(int client); - void (*EA_Respawn)(int client); - void (*EA_MoveUp)(int client); - void (*EA_MoveDown)(int client); - void (*EA_MoveForward)(int client); - void (*EA_MoveBack)(int client); - void (*EA_MoveLeft)(int client); - void (*EA_MoveRight)(int client); - void (*EA_Crouch)(int client); - - void (*EA_SelectWeapon)(int client, int weapon); - void (*EA_Jump)(int client); - void (*EA_DelayedJump)(int client); - void (*EA_Move)(int client, vec3_t dir, float speed); - void (*EA_View)(int client, vec3_t viewangles); - //send regular input to the server - void (*EA_EndRegular)(int client, float thinktime); - void (*EA_GetInput)(int client, float thinktime, bot_input_t *input); - void (*EA_ResetInput)(int client); -} ea_export_t; - -typedef struct ai_export_s -{ - //----------------------------------- - // be_ai_char.h - //----------------------------------- - int (*BotLoadCharacter)(char *charfile, float skill); - void (*BotFreeCharacter)(int character); - float (*Characteristic_Float)(int character, int index); - float (*Characteristic_BFloat)(int character, int index, float min, float max); - int (*Characteristic_Integer)(int character, int index); - int (*Characteristic_BInteger)(int character, int index, int min, int max); - void (*Characteristic_String)(int character, int index, char *buf, int size); - //----------------------------------- - // be_ai_chat.h - //----------------------------------- - int (*BotAllocChatState)(void); - void (*BotFreeChatState)(int handle); - void (*BotQueueConsoleMessage)(int chatstate, int type, char *message); - void (*BotRemoveConsoleMessage)(int chatstate, int handle); - int (*BotNextConsoleMessage)(int chatstate, struct bot_consolemessage_s *cm); - int (*BotNumConsoleMessages)(int chatstate); - void (*BotInitialChat)(int chatstate, char *type, int mcontext, char *var0, char *var1, char *var2, char *var3, char *var4, char *var5, char *var6, char *var7); - int (*BotNumInitialChats)(int chatstate, char *type); - int (*BotReplyChat)(int chatstate, char *message, int mcontext, int vcontext, char *var0, char *var1, char *var2, char *var3, char *var4, char *var5, char *var6, char *var7); - int (*BotChatLength)(int chatstate); - void (*BotEnterChat)(int chatstate, int client, int sendto); - void (*BotGetChatMessage)(int chatstate, char *buf, int size); - int (*StringContains)(char *str1, char *str2, int casesensitive); - int (*BotFindMatch)(char *str, struct bot_match_s *match, unsigned long int context); - void (*BotMatchVariable)(struct bot_match_s *match, int variable, char *buf, int size); - void (*UnifyWhiteSpaces)(char *string); - void (*BotReplaceSynonyms)(char *string, unsigned long int context); - int (*BotLoadChatFile)(int chatstate, char *chatfile, char *chatname); - void (*BotSetChatGender)(int chatstate, int gender); - void (*BotSetChatName)(int chatstate, char *name, int client); - //----------------------------------- - // be_ai_goal.h - //----------------------------------- - void (*BotResetGoalState)(int goalstate); - void (*BotResetAvoidGoals)(int goalstate); - void (*BotRemoveFromAvoidGoals)(int goalstate, int number); - void (*BotPushGoal)(int goalstate, struct bot_goal_s *goal); - void (*BotPopGoal)(int goalstate); - void (*BotEmptyGoalStack)(int goalstate); - void (*BotDumpAvoidGoals)(int goalstate); - void (*BotDumpGoalStack)(int goalstate); - void (*BotGoalName)(int number, char *name, int size); - int (*BotGetTopGoal)(int goalstate, struct bot_goal_s *goal); - int (*BotGetSecondGoal)(int goalstate, struct bot_goal_s *goal); - int (*BotChooseLTGItem)(int goalstate, vec3_t origin, int *inventory, int travelflags); - int (*BotChooseNBGItem)(int goalstate, vec3_t origin, int *inventory, int travelflags, - struct bot_goal_s *ltg, float maxtime); - int (*BotTouchingGoal)(vec3_t origin, struct bot_goal_s *goal); - int (*BotItemGoalInVisButNotVisible)(int viewer, vec3_t eye, vec3_t viewangles, struct bot_goal_s *goal); - int (*BotGetLevelItemGoal)(int index, char *classname, struct bot_goal_s *goal); - int (*BotGetNextCampSpotGoal)(int num, struct bot_goal_s *goal); - int (*BotGetMapLocationGoal)(char *name, struct bot_goal_s *goal); - float (*BotAvoidGoalTime)(int goalstate, int number); - void (*BotSetAvoidGoalTime)(int goalstate, int number, float avoidtime); - void (*BotInitLevelItems)(void); - void (*BotUpdateEntityItems)(void); - int (*BotLoadItemWeights)(int goalstate, char *filename); - void (*BotFreeItemWeights)(int goalstate); - void (*BotInterbreedGoalFuzzyLogic)(int parent1, int parent2, int child); - void (*BotSaveGoalFuzzyLogic)(int goalstate, char *filename); - void (*BotMutateGoalFuzzyLogic)(int goalstate, float range); - int (*BotAllocGoalState)(int client); - void (*BotFreeGoalState)(int handle); - //----------------------------------- - // be_ai_move.h - //----------------------------------- - void (*BotResetMoveState)(int movestate); - void (*BotMoveToGoal)(struct bot_moveresult_s *result, int movestate, struct bot_goal_s *goal, int travelflags); - int (*BotMoveInDirection)(int movestate, vec3_t dir, float speed, int type); - void (*BotResetAvoidReach)(int movestate); - void (*BotResetLastAvoidReach)(int movestate); - int (*BotReachabilityArea)(vec3_t origin, int testground); - int (*BotMovementViewTarget)(int movestate, struct bot_goal_s *goal, int travelflags, float lookahead, vec3_t target); - int (*BotPredictVisiblePosition)(vec3_t origin, int areanum, struct bot_goal_s *goal, int travelflags, vec3_t target); - int (*BotAllocMoveState)(void); - void (*BotFreeMoveState)(int handle); - void (*BotInitMoveState)(int handle, struct bot_initmove_s *initmove); - void (*BotAddAvoidSpot)(int movestate, vec3_t origin, float radius, int type); - //----------------------------------- - // be_ai_weap.h - //----------------------------------- - int (*BotChooseBestFightWeapon)(int weaponstate, int *inventory); - void (*BotGetWeaponInfo)(int weaponstate, int weapon, struct weaponinfo_s *weaponinfo); - int (*BotLoadWeaponWeights)(int weaponstate, char *filename); - int (*BotAllocWeaponState)(void); - void (*BotFreeWeaponState)(int weaponstate); - void (*BotResetWeaponState)(int weaponstate); - //----------------------------------- - // be_ai_gen.h - //----------------------------------- - int (*GeneticParentsAndChildSelection)(int numranks, float *ranks, int *parent1, int *parent2, int *child); -} ai_export_t; - -//bot AI library imported functions -typedef struct botlib_export_s -{ - //Area Awareness System functions - aas_export_t aas; - //Elementary Action functions - ea_export_t ea; - //AI functions - ai_export_t ai; - //setup the bot library, returns BLERR_ - int (*BotLibSetup)(void); - //shutdown the bot library, returns BLERR_ - int (*BotLibShutdown)(void); - //sets a library variable returns BLERR_ - int (*BotLibVarSet)(char *var_name, char *value); - //gets a library variable returns BLERR_ - int (*BotLibVarGet)(char *var_name, char *value, int size); - - //sets a C-like define returns BLERR_ - int (*PC_AddGlobalDefine)(char *string); - int (*PC_LoadSourceHandle)(const char *filename); - int (*PC_FreeSourceHandle)(int handle); - int (*PC_ReadTokenHandle)(int handle, pc_token_t *pc_token); - int (*PC_SourceFileAndLine)(int handle, char *filename, int *line); - - //start a frame in the bot library - int (*BotLibStartFrame)(float time); - //load a new map in the bot library - int (*BotLibLoadMap)(const char *mapname); - //entity updates - int (*BotLibUpdateEntity)(int ent, bot_entitystate_t *state); - //just for testing - int (*Test)(int parm0, char *parm1, vec3_t parm2, vec3_t parm3); -} botlib_export_t; - -//linking of bot library -botlib_export_t *GetBotLibAPI( int apiVersion, botlib_import_t *import ); - -/* Library variables: - -name: default: module(s): description: - -"basedir" "" l_utils.c base directory -"gamedir" "" l_utils.c game directory -"cddir" "" l_utils.c CD directory - -"log" "0" l_log.c enable/disable creating a log file -"maxclients" "4" be_interface.c maximum number of clients -"maxentities" "1024" be_interface.c maximum number of entities -"bot_developer" "0" be_interface.c bot developer mode - -"phys_friction" "6" be_aas_move.c ground friction -"phys_stopspeed" "100" be_aas_move.c stop speed -"phys_gravity" "800" be_aas_move.c gravity value -"phys_waterfriction" "1" be_aas_move.c water friction -"phys_watergravity" "400" be_aas_move.c gravity in water -"phys_maxvelocity" "320" be_aas_move.c maximum velocity -"phys_maxwalkvelocity" "320" be_aas_move.c maximum walk velocity -"phys_maxcrouchvelocity" "100" be_aas_move.c maximum crouch velocity -"phys_maxswimvelocity" "150" be_aas_move.c maximum swim velocity -"phys_walkaccelerate" "10" be_aas_move.c walk acceleration -"phys_airaccelerate" "1" be_aas_move.c air acceleration -"phys_swimaccelerate" "4" be_aas_move.c swim acceleration -"phys_maxstep" "18" be_aas_move.c maximum step height -"phys_maxsteepness" "0.7" be_aas_move.c maximum floor steepness -"phys_maxbarrier" "32" be_aas_move.c maximum barrier height -"phys_maxwaterjump" "19" be_aas_move.c maximum waterjump height -"phys_jumpvel" "270" be_aas_move.c jump z velocity -"phys_falldelta5" "40" be_aas_move.c -"phys_falldelta10" "60" be_aas_move.c -"rs_waterjump" "400" be_aas_move.c -"rs_teleport" "50" be_aas_move.c -"rs_barrierjump" "100" be_aas_move.c -"rs_startcrouch" "300" be_aas_move.c -"rs_startgrapple" "500" be_aas_move.c -"rs_startwalkoffledge" "70" be_aas_move.c -"rs_startjump" "300" be_aas_move.c -"rs_rocketjump" "500" be_aas_move.c -"rs_bfgjump" "500" be_aas_move.c -"rs_jumppad" "250" be_aas_move.c -"rs_aircontrolledjumppad" "300" be_aas_move.c -"rs_funcbob" "300" be_aas_move.c -"rs_startelevator" "50" be_aas_move.c -"rs_falldamage5" "300" be_aas_move.c -"rs_falldamage10" "500" be_aas_move.c -"rs_maxjumpfallheight" "450" be_aas_move.c - -"max_aaslinks" "4096" be_aas_sample.c maximum links in the AAS -"max_routingcache" "4096" be_aas_route.c maximum routing cache size in KB -"forceclustering" "0" be_aas_main.c force recalculation of clusters -"forcereachability" "0" be_aas_main.c force recalculation of reachabilities -"forcewrite" "0" be_aas_main.c force writing of aas file -"aasoptimize" "0" be_aas_main.c enable aas optimization -"sv_mapChecksum" "0" be_aas_main.c BSP file checksum -"bot_visualizejumppads" "0" be_aas_reach.c visualize jump pads - -"bot_reloadcharacters" "0" - reload bot character files -"ai_gametype" "0" be_ai_goal.c game type -"droppedweight" "1000" be_ai_goal.c additional dropped item weight -"weapindex_rocketlauncher" "5" be_ai_move.c rl weapon index for rocket jumping -"weapindex_bfg10k" "9" be_ai_move.c bfg weapon index for bfg jumping -"weapindex_grapple" "10" be_ai_move.c grapple weapon index for grappling -"entitytypemissile" "3" be_ai_move.c ET_MISSILE -"offhandgrapple" "0" be_ai_move.c enable off hand grapple hook -"cmd_grappleon" "grappleon" be_ai_move.c command to activate off hand grapple -"cmd_grappleoff" "grappleoff" be_ai_move.c command to deactivate off hand grapple -"itemconfig" "items.c" be_ai_goal.c item configuration file -"weaponconfig" "weapons.c" be_ai_weap.c weapon configuration file -"synfile" "syn.c" be_ai_chat.c file with synonyms -"rndfile" "rnd.c" be_ai_chat.c file with random strings -"matchfile" "match.c" be_ai_chat.c file with match strings -"nochat" "0" be_ai_chat.c disable chats -"max_messages" "1024" be_ai_chat.c console message heap size -"max_weaponinfo" "32" be_ai_weap.c maximum number of weapon info -"max_projectileinfo" "32" be_ai_weap.c maximum number of projectile info -"max_iteminfo" "256" be_ai_goal.c maximum number of item info -"max_levelitems" "256" be_ai_goal.c maximum number of level items - -*/ - |