/*
 * Copyright (c) 2001-2006 Will Day <willday@hpgx.net>
 * See the file "dllapi.h" in this folder for full information
 */

// Simplified version by Wei Mingzhi

#ifndef META_API_H
#define META_API_H

typedef int (*GETENTITYAPI_FN) (gamefuncs_t *pFunctionTable, int interfaceVersion);
typedef int (*GETENTITYAPI2_FN) (gamefuncs_t *pFunctionTable, int *interfaceVersion);
typedef int (*GETNEWDLLFUNCTIONS_FN) (newgamefuncs_t *pFunctionTable, int *interfaceVersion);
typedef int (*GET_ENGINE_FUNCTIONS_FN) (enginefuncs_t *pengfuncsFromEngine, int *interfaceVersion);

#define META_INTERFACE_VERSION "5:13"

typedef enum { PT_NEVER = 0, PT_STARTUP, PT_CHANGELEVEL, PT_ANYTIME, PT_ANYPAUSE } PLUG_LOADTIME;

typedef struct {
   char const *ifvers;
   char const *name;
   char const *version;
   char const *date;
   char const *author;
   char const *url;
   char const *logtag;
   PLUG_LOADTIME loadable;
   PLUG_LOADTIME unloadable;
} plugin_info_t;
extern plugin_info_t Plugin_info;

typedef plugin_info_t *plid_t;

#define PLID &Plugin_info

typedef enum { PNL_NULL = 0, PNL_INI_DELETED, PNL_FILE_NEWER, PNL_COMMAND, PNL_CMD_FORCED, PNL_DELAYED, PNL_PLUGIN, PNL_PLG_FORCED, PNL_RELOAD } PL_UNLOAD_REASON;

typedef enum { MRES_UNSET = 0, MRES_IGNORED, MRES_HANDLED, MRES_OVERRIDE, MRES_SUPERCEDE } META_RES;

typedef struct meta_globals_s {
   META_RES mres;
   META_RES prev_mres;
   META_RES status;
   void *orig_ret;
   void *override_ret;
} meta_globals_t;

extern meta_globals_t *gpMetaGlobals;

#define SET_META_RESULT(result) gpMetaGlobals->mres = result
#define RETURN_META(result)         \
   {                                \
      gpMetaGlobals->mres = result; \
      return;                       \
   }
#define RETURN_META_VALUE(result, value) \
   {                                     \
      gpMetaGlobals->mres = result;      \
      return (value);                    \
   }
#define META_RESULT_STATUS gpMetaGlobals->status
#define META_RESULT_PREVIOUS gpMetaGlobals->prev_mres
#define META_RESULT_ORIG_RET(type) *(type *)gpMetaGlobals->orig_ret
#define META_RESULT_OVERRIDE_RET(type) *(type *)gpMetaGlobals->override_ret

typedef struct {
   GETENTITYAPI_FN pfnGetEntityAPI;
   GETENTITYAPI_FN pfnGetEntityAPI_Post;
   GETENTITYAPI2_FN pfnGetEntityAPI2;
   GETENTITYAPI2_FN pfnGetEntityAPI2_Post;
   GETNEWDLLFUNCTIONS_FN pfnGetNewDLLFunctions;
   GETNEWDLLFUNCTIONS_FN pfnGetNewDLLFunctions_Post;
   GET_ENGINE_FUNCTIONS_FN pfnGetEngineFunctions;
   GET_ENGINE_FUNCTIONS_FN pfnGetEngineFunctions_Post;
} metamod_funcs_t;

#include "util.h"

// max buffer size for printed messages
#define MAX_LOGMSG_LEN 1024

// for getgameinfo:
typedef enum { GINFO_NAME = 0, GINFO_DESC, GINFO_GAMEDIR, GINFO_DLL_FULLPATH, GINFO_DLL_FILENAME, GINFO_REALDLL_FULLPATH } ginfo_t;

// Meta Utility Function table type.
typedef struct meta_util_funcs_s {
   void (*pfnLogConsole) (plid_t plid, const char *szFormat, ...);
   void (*pfnLogMessage) (plid_t plid, const char *szFormat, ...);
   void (*pfnLogError) (plid_t plid, const char *szFormat, ...);
   void (*pfnLogDeveloper) (plid_t plid, const char *szFormat, ...);
   void (*pfnCenterSay) (plid_t plid, const char *szFormat, ...);
   void (*pfnCenterSayParms) (plid_t plid, hudtextparms_t tparms, const char *szFormat, ...);
   void (*pfnCenterSayVarargs) (plid_t plid, hudtextparms_t tparms, const char *szFormat, va_list ap);
   int (*pfnCallGameEntity) (plid_t plid, const char *entStr, entvars_t *pev);
   int (*pfnGetUserMsgID) (plid_t plid, const char *msgname, int *size);
   const char *(*pfnGetUserMsgName) (plid_t plid, int msgid, int *size);
   const char *(*pfnGetPluginPath) (plid_t plid);
   const char *(*pfnGetGameInfo) (plid_t plid, ginfo_t tag);
   int (*pfnLoadPlugin) (plid_t plid, const char *cmdline, PLUG_LOADTIME now, void **plugin_handle);
   int (*pfnUnloadPlugin) (plid_t plid, const char *cmdline, PLUG_LOADTIME now, PL_UNLOAD_REASON reason);
   int (*pfnUnloadPluginByHandle) (plid_t plid, void *plugin_handle, PLUG_LOADTIME now, PL_UNLOAD_REASON reason);
   const char *(*pfnIsQueryingClienCVar_t) (plid_t plid, const edict_t *player);
   int (*pfnMakeRequestID) (plid_t plid);
   void (*pfnGetHookTables) (plid_t plid, enginefuncs_t **peng, gamefuncs_t **pdll, newgamefuncs_t **pnewdll);
} mutil_funcs_t;

typedef struct {
   gamefuncs_t *dllapi_table;
   newgamefuncs_t *newapi_table;
} gamedll_funcs_t;

extern gamedll_funcs_t *gpGamedllFuncs;
extern mutil_funcs_t *gpMetaUtilFuncs;
extern metamod_funcs_t gMetaFunctionTable;

#define MDLL_FUNC gpGamedllFuncs->dllapi_table

#define MDLL_GameDLLInit MDLL_FUNC->pfnGameInit
#define MDLL_Spawn MDLL_FUNC->pfnSpawn
#define MDLL_Think MDLL_FUNC->pfnThink
#define MDLL_Use MDLL_FUNC->pfnUse
#define MDLL_Touch MDLL_FUNC->pfnTouch
#define MDLL_Blocked MDLL_FUNC->pfnBlocked
#define MDLL_KeyValue MDLL_FUNC->pfnKeyValue
#define MDLL_Save MDLL_FUNC->pfnSave
#define MDLL_Restore MDLL_FUNC->pfnRestore
#define MDLL_ObjectCollsionBox MDLL_FUNC->pfnAbsBox
#define MDLL_SaveWriteFields MDLL_FUNC->pfnSaveWriteFields
#define MDLL_SaveReadFields MDLL_FUNC->pfnSaveReadFields
#define MDLL_SaveGlobalState MDLL_FUNC->pfnSaveGlobalState
#define MDLL_RestoreGlobalState MDLL_FUNC->pfnRestoreGlobalState
#define MDLL_ResetGlobalState MDLL_FUNC->pfnResetGlobalState
#define MDLL_ClientConnect MDLL_FUNC->pfnClientConnect
#define MDLL_ClientDisconnect MDLL_FUNC->pfnClientDisconnect
#define MDLL_ClientKill MDLL_FUNC->pfnClientKill
#define MDLL_ClientPutInServer MDLL_FUNC->pfnClientPutInServer
#define MDLL_ClientCommand MDLL_FUNC->pfnClientCommand
#define MDLL_ClientUserInfoChanged MDLL_FUNC->pfnClientUserInfoChanged
#define MDLL_ServerActivate MDLL_FUNC->pfnServerActivate
#define MDLL_ServerDeactivate MDLL_FUNC->pfnServerDeactivate
#define MDLL_PlayerPreThink MDLL_FUNC->pfnPlayerPreThink
#define MDLL_PlayerPostThink MDLL_FUNC->pfnPlayerPostThink
#define MDLL_StartFrame MDLL_FUNC->pfnStartFrame
#define MDLL_ParmsNewLevel MDLL_FUNC->pfnParmsNewLevel
#define MDLL_ParmsChangeLevel MDLL_FUNC->pfnParmsChangeLevel
#define MDLL_GetGameDescription MDLL_FUNC->pfnGetGameDescription
#define MDLL_PlayerCustomization MDLL_FUNC->pfnPlayerCustomization
#define MDLL_SpectatorConnect MDLL_FUNC->pfnSpectatorConnect
#define MDLL_SpectatorDisconnect MDLL_FUNC->pfnSpectatorDisconnect
#define MDLL_SpectatorThink MDLL_FUNC->pfnSpectatorThink
#define MDLL_Sys_Error MDLL_FUNC->pfnSys_Error
#define MDLL_PM_Move MDLL_FUNC->pfnPM_Move
#define MDLL_PM_Init MDLL_FUNC->pfnPM_Init
#define MDLL_PM_FindTextureType MDLL_FUNC->pfnPM_FindTextureType
#define MDLL_SetupVisibility MDLL_FUNC->pfnSetupVisibility
#define MDLL_UpdateClientData MDLL_FUNC->pfnUpdateClientData
#define MDLL_AddToFullPack MDLL_FUNC->pfnAddToFullPack
#define MDLL_CreateBaseline MDLL_FUNC->pfnCreateBaseline
#define MDLL_RegisterEncoders MDLL_FUNC->pfnRegisterEncoders
#define MDLL_GetWeaponData MDLL_FUNC->pfnGetWeaponData
#define MDLL_CmdStart MDLL_FUNC->pfnCmdStart
#define MDLL_CmdEnd MDLL_FUNC->pfnCmdEnd
#define MDLL_ConnectionlessPacket MDLL_FUNC->pfnConnectionlessPacket
#define MDLL_GetHullBounds MDLL_FUNC->pfnGetHullBounds
#define MDLL_CreateInstancedBaselines MDLL_FUNC->pfnCreateInstancedBaselines
#define MDLL_InconsistentFile MDLL_FUNC->pfnInconsistentFile
#define MDLL_AllowLagCompensation MDLL_FUNC->pfnAllowLagCompensation

#define MNEW_FUNC gpGamedllFuncs->newapi_table

#define MNEW_OnFreeEntPrivateData MNEW_FUNC->pfnOnFreeEntPrivateData
#define MNEW_GameShutdown MNEW_FUNC->pfnGameShutdown
#define MNEW_ShouldCollide MNEW_FUNC->pfnShouldCollide
#define MNEW_CvarValue MNEW_FUNC->pfnCvarValue
#define MNEW_CvarValue2 MNEW_FUNC->pfnCvarValue2

// convenience macros for metautil functions
#define LOG_CONSOLE (*gpMetaUtilFuncs->pfnLogConsole)
#define LOG_MESSAGE (*gpMetaUtilFuncs->pfnLogMessage)
#define LOG_MMERROR (*gpMetaUtilFuncs->pfnLogError)
#define LOG_DEVELOPER (*gpMetaUtilFuncs->pfnLogDeveloper)
#define CENTER_SAY (*gpMetaUtilFuncs->pfnCenterSay)
#define CENTER_SAY_PARMS (*gpMetaUtilFuncs->pfnCenterSayParms)
#define CENTER_SAY_VARARGS (*gpMetaUtilFuncs->pfnCenterSayVarargs)
#define CALL_GAME_ENTITY (*gpMetaUtilFuncs->pfnCallGameEntity)
#define GET_USER_MSG_ID (*gpMetaUtilFuncs->pfnGetUserMsgID)
#define GET_USER_MSG_NAME (*gpMetaUtilFuncs->pfnGetUserMsgName)
#define GET_PLUGIN_PATH (*gpMetaUtilFuncs->pfnGetPluginPath)
#define GET_GAME_INFO (*gpMetaUtilFuncs->pfnGetGameInfo)
#define LOAD_PLUGIN (*gpMetaUtilFuncs->pfnLoadPlugin)
#define UNLOAD_PLUGIN (*gpMetaUtilFuncs->pfnUnloadPlugin)
#define UNLOAD_PLUGIN_BY_HANDLE (*gpMetaUtilFuncs->pfnUnloadPluginByHandle)
#define IS_QUERYING_CLIENT_CVAR (*gpMetaUtilFuncs->pfnIsQueryingClienCVar_t)
#define MAKE_REQUESTID (*gpMetaUtilFuncs->pfnMakeRequestID)
#define GET_HOOK_TABLES (*gpMetaUtilFuncs->pfnGetHookTables)

#endif