/*
===========================================================================

Return to Castle Wolfenstein multiplayer GPL Source Code
Copyright (C) 1999-2010 id Software LLC, a ZeniMax Media company. 

This file is part of the Return to Castle Wolfenstein multiplayer GPL Source Code (“RTCW MP Source Code”).  

RTCW MP 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 3 of the License, or
(at your option) any later version.

RTCW MP 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 RTCW MP Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the RTCW MP Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the RTCW MP Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/

//===========================================================================
//
// Name:			ai_cast_script.c
// Function:		Wolfenstein AI Character Scripting
// Programmer:		Ridah
// Tab Size:		4 (real tabs)
//===========================================================================

#include "g_local.h"
#include "../qcommon/q_shared.h"
#include "../botlib/botlib.h"      //bot lib interface
#include "../botlib/be_aas.h"
#include "../botlib/be_ea.h"
#include "../botlib/be_ai_gen.h"
#include "../botlib/be_ai_goal.h"
#include "../botlib/be_ai_move.h"
#include "../botlib/botai.h"          //bot ai interface

#include "ai_cast.h"

/*
Scripting that allows the designers to control the behaviour of AI characters
according to each different scenario.
*/

// action functions need to be declared here so they can be accessed in the scriptAction table
qboolean AICast_ScriptAction_GotoMarker( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_WalkToMarker( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_CrouchToMarker( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_GotoCast( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_WalkToCast( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_CrouchToCast( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Wait( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Trigger( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_FollowCast( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_PlaySound( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_NoAttack( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Attack( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_PlayAnim( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_ClearAnim( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_SetAmmo( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_SetClip( cast_state_t *cs, char *params );			//----(SA)	added
qboolean AICast_ScriptAction_SelectWeapon( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_GiveArmor( cast_state_t *cs, char *params );		//----(SA)	added
qboolean AICast_ScriptAction_GiveWeapon( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_GiveInventory( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_TakeWeapon( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Movetype( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_AlertEntity( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_SaveGame( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_FireAtTarget( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_GodMode( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Accum( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_SpawnCast( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_MissionFailed( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_MissionSuccess( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_NoAIDamage( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Print( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_FaceTargetAngles( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_ResetScript( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Mount( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Unmount( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_SavePersistant( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_ChangeLevel( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_FoundSecret( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_NoSight( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Sight( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_NoAvoid( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Avoid( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Attrib( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_DenyAction( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_LightningDamage( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Headlook( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_BackupScript( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_RestoreScript( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_StateType( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_KnockBack( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Zoom( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Parachute( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_StartCam( cast_state_t *cs, char *params );		//----(SA)	added
qboolean AICast_ScriptAction_StartCamBlack( cast_state_t *cs, char *params );	//----(SA)	added
qboolean AICast_ScriptAction_EntityScriptName( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_AIScriptName( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_SetHealth( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_NoTarget( cast_state_t *cs, char *params );
qboolean AICast_ScriptAction_Cvar( cast_state_t *cs, char *params );

// these are the actions that each event can call
cast_script_stack_action_t scriptActions[] =
{
	{"gotomarker",       AICast_ScriptAction_GotoMarker},
	{"runtomarker",      AICast_ScriptAction_GotoMarker},
	{"walktomarker", AICast_ScriptAction_WalkToMarker},
	{"crouchtomarker",   AICast_ScriptAction_CrouchToMarker},
	{"gotocast",     AICast_ScriptAction_GotoCast},
	{"runtocast",        AICast_ScriptAction_GotoCast},
	{"walktocast",       AICast_ScriptAction_WalkToCast},
	{"crouchtocast", AICast_ScriptAction_CrouchToCast},
	{"followcast",       AICast_ScriptAction_FollowCast},
	{"playsound",        AICast_ScriptAction_PlaySound},
	{"playanim",     AICast_ScriptAction_PlayAnim},
	{"clearanim",        AICast_ScriptAction_ClearAnim},
	{"wait",         AICast_ScriptAction_Wait},
	{"trigger",          AICast_ScriptAction_Trigger},
	{"setammo",          AICast_ScriptAction_SetAmmo},
	{"setclip",          AICast_ScriptAction_SetClip},				//----(SA)	added
	{"selectweapon", AICast_ScriptAction_SelectWeapon},
	{"noattack",     AICast_ScriptAction_NoAttack},
	{"attack",           AICast_ScriptAction_Attack},
	{"givearmor",        AICast_ScriptAction_GiveArmor},			//----(SA)	added
	{"giveinventory",    AICast_ScriptAction_GiveInventory},
	{"giveweapon",       AICast_ScriptAction_GiveWeapon},
	{"takeweapon",       AICast_ScriptAction_TakeWeapon},
	{"movetype",     AICast_ScriptAction_Movetype},
	{"alertentity",      AICast_ScriptAction_AlertEntity},
	{"savegame",     AICast_ScriptAction_SaveGame},
	{"fireattarget", AICast_ScriptAction_FireAtTarget},
	{"godmode",          AICast_ScriptAction_GodMode},
	{"accum",            AICast_ScriptAction_Accum},
	{"spawncast",        AICast_ScriptAction_SpawnCast},
	{"missionfailed",    AICast_ScriptAction_MissionFailed},
	{"missionsuccess",   AICast_ScriptAction_MissionSuccess},
	{"noaidamage",       AICast_ScriptAction_NoAIDamage},
	{"print",            AICast_ScriptAction_Print},
	{"facetargetangles",AICast_ScriptAction_FaceTargetAngles},
	{"resetscript",      AICast_ScriptAction_ResetScript},
	{"mount",            AICast_ScriptAction_Mount},
	{"unmount",          AICast_ScriptAction_Unmount},
	{"savepersistant",   AICast_ScriptAction_SavePersistant},
	{"changelevel",      AICast_ScriptAction_ChangeLevel},
	{"foundsecret",      AICast_ScriptAction_FoundSecret},
	{"nosight",          AICast_ScriptAction_NoSight},
	{"sight",            AICast_ScriptAction_Sight},
	{"noavoid",          AICast_ScriptAction_NoAvoid},
	{"avoid",            AICast_ScriptAction_Avoid},
	{"attrib",           AICast_ScriptAction_Attrib},
	{"denyactivate", AICast_ScriptAction_DenyAction},
	{"lightningdamage",  AICast_ScriptAction_LightningDamage},
	{"deny",         AICast_ScriptAction_DenyAction},
	{"headlook",     AICast_ScriptAction_Headlook},
	{"backupscript", AICast_ScriptAction_BackupScript},
	{"restorescript",    AICast_ScriptAction_RestoreScript},
	{"statetype",        AICast_ScriptAction_StateType},
	{"knockback",        AICast_ScriptAction_KnockBack},
	{"zoom",         AICast_ScriptAction_Zoom},
	{"parachute",        AICast_ScriptAction_Parachute},
	{"startcam",     AICast_ScriptAction_StartCam},				//----(SA)	added
	{"startcamblack",    AICast_ScriptAction_StartCamBlack},	//----(SA)	added
	{"entityscriptname",AICast_ScriptAction_EntityScriptName},
	{"aiscriptname", AICast_ScriptAction_AIScriptName},
	{"sethealth",        AICast_ScriptAction_SetHealth},
	{"notarget",     AICast_ScriptAction_NoTarget},
	{"cvar",         AICast_ScriptAction_Cvar},

	{NULL,              0}
};

qboolean AICast_EventMatch_StringEqual( cast_script_event_t *event, char *eventParm );
qboolean AICast_EventMatch_IntInRange( cast_script_event_t *event, char *eventParm );

// the list of events that can start an action sequence
// NOTE!!: only append to this list, DO NOT INSERT!!
cast_script_event_define_t scriptEvents[] =
{
	{"spawn",            0},          // called as each character is spawned into the game
	{"enemysight",       AICast_EventMatch_StringEqual}, // enemy has been sighted for the first time (once only)
	{"sight",            AICast_EventMatch_StringEqual}, // non-enemy has been sighted for the first time (once only)
	{"enemydead",        AICast_EventMatch_StringEqual}, // our enemy is now dead
	{"trigger",          AICast_EventMatch_StringEqual}, // something has triggered us (always followed by an identifier)
	{"pain",         AICast_EventMatch_IntInRange},  // we've been hurt
	{"death",            0},	// RIP
	{"activate",     AICast_EventMatch_StringEqual}, // "param" has just activated us
	{"enemysightcorpse",AICast_EventMatch_StringEqual},  // sighted the given enemy as a corpse, for the first time
	{"friendlysightcorpse", 0},                       // sighted a friendly as a corpse for the first time
	{"avoiddanger",      AICast_EventMatch_StringEqual}, // we are avoiding something dangerous
	{"blocked",          AICast_EventMatch_StringEqual}, // blocked by someone else
	{"statechange",      AICast_EventMatch_StringEqual}, // changing aistates
	{"bulletimpact", 0},
	{"inspectbodystart", AICast_EventMatch_StringEqual}, // starting to travel to body for inspection
	{"inspectbodyend",   AICast_EventMatch_StringEqual}, // reached body for inspection
	{"inspectsoundstart",    AICast_EventMatch_StringEqual}, // reached sound for inspection
	{"inspectsoundend",  AICast_EventMatch_StringEqual}, // reached sound for inspection
	{"attacksound",      AICast_EventMatch_StringEqual}, // play a custom attack sound, and/or deny playing the default sound
	{"fakedeath",        0},
	{"bulletimpactsound",    0},
	{"inspectfriendlycombatstart", 0},

	{NULL,              0}
};

int numSecrets;

/*
===============
AICast_EventMatch_StringEqual
===============
*/
qboolean AICast_EventMatch_StringEqual( cast_script_event_t *event, char *eventParm ) {
	if ( !event->params || !event->params[0] || ( eventParm && !Q_strcasecmp( event->params, eventParm ) ) ) {
		return qtrue;
	} else {
		return qfalse;
	}
}

/*
===============
AICast_EventMatch_IntInRange
===============
*/
qboolean AICast_EventMatch_IntInRange( cast_script_event_t *event, char *eventParm ) {
	char *pString, *token;
	int int1, int2, eInt;

	// get the cast name
	pString = eventParm;
	token = COM_ParseExt( &pString, qfalse );
	int1 = atoi( token );
	token = COM_ParseExt( &pString, qfalse );
	int2 = atoi( token );

	eInt = atoi( event->params );

	if ( eventParm && eInt > int1 && eInt <= int2 ) {
		return qtrue;
	} else {
		return qfalse;
	}
}

/*
===============
AICast_EventForString
===============
*/
int AICast_EventForString( char *string ) {
	int i;

	for ( i = 0; scriptEvents[i].eventStr; i++ )
	{
		if ( !Q_strcasecmp( string, scriptEvents[i].eventStr ) ) {
			return i;
		}
	}

	return -1;
}

/*
===============
AICast_ActionForString
===============
*/
cast_script_stack_action_t *AICast_ActionForString( char *string ) {
	int i;

	for ( i = 0; scriptActions[i].actionString; i++ )
	{
		if ( !Q_strcasecmp( string, scriptActions[i].actionString ) ) {
			if ( !Q_strcasecmp( string, "foundsecret" ) ) {
				numSecrets++;
			}
			return &scriptActions[i];
		}
	}

	return NULL;
}

/*
=============
AICast_ScriptLoad

  Loads the script for the current level into the buffer
=============
*/
void AICast_ScriptLoad( void ) {
	char filename[MAX_QPATH];
	vmCvar_t mapname;
	fileHandle_t f;
	int len;

	level.scriptAI = NULL;

	trap_Cvar_VariableStringBuffer( "ai_scriptName", filename, sizeof( filename ) );
	if ( strlen( filename ) > 0 ) {
		trap_Cvar_Register( &mapname, "ai_scriptName", "", CVAR_ROM );
	} else {
		trap_Cvar_Register( &mapname, "mapname", "", CVAR_SERVERINFO | CVAR_ROM );
	}
	Q_strncpyz( filename, "maps/", sizeof( filename ) );
	Q_strcat( filename, sizeof( filename ), mapname.string );
	Q_strcat( filename, sizeof( filename ), ".ai" );

	len = trap_FS_FOpenFile( filename, &f, FS_READ );

	// make sure we clear out the temporary scriptname
	trap_Cvar_Set( "ai_scriptName", "" );

	if ( len < 0 ) {
		return;
	}

	level.scriptAI = G_Alloc( len );
	trap_FS_Read( level.scriptAI, len, f );

	trap_FS_FCloseFile( f );

	return;
}

/*
==============
AICast_ScriptParse

  Parses the script for the given character
==============
*/
#define MAX_SCRIPT_EVENTS   64
cast_script_event_t cast_temp_events[MAX_SCRIPT_EVENTS];
void AICast_ScriptParse( cast_state_t *cs ) {
	gentity_t   *ent;
	char        *pScript;
	char        *token;
	qboolean wantName;
	qboolean inScript;
	int eventNum;
	int numEventItems;
	cast_script_event_t *curEvent;
	char params[MAX_QPATH];
	cast_script_stack_action_t  *action;
	int i;
	int bracketLevel;

	if ( !level.scriptAI ) {
		return;
	}

	ent = &g_entities[cs->entityNum];
	if ( !ent->aiName ) {
		return;
	}

	pScript = level.scriptAI;
	wantName = qtrue;
	inScript = qfalse;
	COM_BeginParseSession( "AICast_ScriptParse" );
	bracketLevel = 0;
	numEventItems = 0;

	memset( cast_temp_events, 0, sizeof( cast_temp_events ) );

	while ( 1 )
	{
		token = COM_Parse( &pScript );

		if ( !token[0] ) {
			if ( !wantName ) {
				G_Error( "AICast_ScriptParse(), Error (line %d): '}' expected, end of script found.\n", COM_GetCurrentParseLine() );
			}
			break;
		}

		// end of script
		if ( token[0] == '}' ) {
			if ( inScript ) {
				break;
			}
			if ( wantName ) {
				G_Error( "AICast_ScriptParse(), Error (line %d): '}' found, but not expected.\n", COM_GetCurrentParseLine() );
			}
			wantName = qtrue;
		} else if ( token[0] == '{' )    {
			if ( wantName ) {
				G_Error( "AICast_ScriptParse(), Error (line %d): '{' found, NAME expected.\n", COM_GetCurrentParseLine() );
			}
		} else if ( wantName )   {
			if ( !Q_strcasecmp( ent->aiName, token ) ) {
				inScript = qtrue;
				numEventItems = 0;
			}
			wantName = qfalse;
		} else if ( inScript )   {
			if ( !Q_strcasecmp( token, "attributes" ) ) {
				// read in all the attributes
				AICast_CheckLevelAttributes( cs, ent, &pScript );
				continue;
			}
			eventNum = AICast_EventForString( token );
			if ( eventNum < 0 ) {
				G_Error( "AICast_ScriptParse(), Error (line %d): unknown event: %s.\n", COM_GetCurrentParseLine(), token );
			}
			if ( numEventItems >= MAX_SCRIPT_EVENTS ) {
				G_Error( "AICast_ScriptParse(), Error (line %d): MAX_SCRIPT_EVENTS reached (%d)\n", COM_GetCurrentParseLine(), MAX_SCRIPT_EVENTS );
			}

			// if this is a "friendlysightcorpse" event, then disable corpse vis sharing
			if ( !Q_stricmp( token, "friendlysightcorpse" ) ) {
				cs->aiFlags &= ~AIFL_CORPSESIGHTING;
			}

			curEvent = &cast_temp_events[numEventItems];
			curEvent->eventNum = eventNum;
			memset( params, 0, sizeof( params ) );

			// parse any event params before the start of this event's actions
			while ( ( token = COM_Parse( &pScript ) ) && ( token[0] != '{' ) )
			{
				if ( !token[0] ) {
					G_Error( "AICast_ScriptParse(), Error (line %d): '}' expected, end of script found.\n", COM_GetCurrentParseLine() );
				}

				if ( eventNum == 13 ) {   // statechange event, check params
					if ( strlen( token ) > 1 ) {
						if ( BG_IndexForString( token, animStateStr, qtrue ) < 0 ) {
							G_Error( "AICast_ScriptParse(), Error (line %d): unknown state type '%s'.\n", COM_GetCurrentParseLine(), token );
						}
					}
				}

				if ( strlen( params ) ) { // add a space between each param
					Q_strcat( params, sizeof( params ), " " );
				}
				Q_strcat( params, sizeof( params ), token );
			}

			if ( strlen( params ) ) { // copy the params into the event
				curEvent->params = G_Alloc( strlen( params ) + 1 );
				Q_strncpyz( curEvent->params, params, strlen( params ) + 1 );
			}

			// parse the actions for this event
			while ( ( token = COM_Parse( &pScript ) ) && ( token[0] != '}' ) )
			{
				if ( !token[0] ) {
					G_Error( "AICast_ScriptParse(), Error (line %d): '}' expected, end of script found.\n", COM_GetCurrentParseLine() );
				}

				action = AICast_ActionForString( token );
				if ( !action ) {
					G_Error( "AICast_ScriptParse(), Error (line %d): unknown action: %s.\n", COM_GetCurrentParseLine(), token );
				}

				curEvent->stack.items[curEvent->stack.numItems].action = action;

				memset( params, 0, sizeof( params ) );
				token = COM_ParseExt( &pScript, qfalse );
				for ( i = 0; token[0]; i++ )
				{
					if ( strlen( params ) ) { // add a space between each param
						Q_strcat( params, sizeof( params ), " " );
					}

					// Special case: playsound's need to be cached on startup to prevent in-game pauses
					if ( ( i == 0 ) && !Q_stricmp( action->actionString, "playsound" ) ) {
						G_SoundIndex( token );
					}

					if ( strrchr( token,' ' ) ) { // need to wrap this param in quotes since it has more than one word
						Q_strcat( params, sizeof( params ), "\"" );
					}

					Q_strcat( params, sizeof( params ), token );

					if ( strrchr( token,' ' ) ) { // need to wrap this param in quotes since it has more than one word
						Q_strcat( params, sizeof( params ), "\"" );
					}

					token = COM_ParseExt( &pScript, qfalse );
				}

				if ( strlen( params ) ) { // copy the params into the event
					curEvent->stack.items[curEvent->stack.numItems].params = G_Alloc( strlen( params ) + 1 );
					Q_strncpyz( curEvent->stack.items[curEvent->stack.numItems].params, params, strlen( params ) + 1 );
				}

				curEvent->stack.numItems++;

				if ( curEvent->stack.numItems >= AICAST_MAX_SCRIPT_STACK_ITEMS ) {
					G_Error( "AICast_ScriptParse(): script exceeded MAX_SCRIPT_ITEMS (%d), line %d\n", AICAST_MAX_SCRIPT_STACK_ITEMS, COM_GetCurrentParseLine() );
				}
			}

			numEventItems++;
		} else    // skip this character completely
		{

			while ( ( token = COM_Parse( &pScript ) ) )
			{
				if ( !token[0] ) {
					G_Error( "AICast_ScriptParse(), Error (line %d): '}' expected, end of script found.\n", COM_GetCurrentParseLine() );
				} else if ( token[0] == '{' ) {
					bracketLevel++;
				} else if ( token[0] == '}' ) {
					if ( !--bracketLevel ) {
						break;
					}
				}
			}
		}
	}

	// alloc and copy the events into the cast_state_t for this cast
	if ( numEventItems > 0 ) {
		cs->castScriptEvents = G_Alloc( sizeof( cast_script_event_t ) * numEventItems );
		memcpy( cs->castScriptEvents, cast_temp_events, sizeof( cast_script_event_t ) * numEventItems );
		cs->numCastScriptEvents = numEventItems;

		cs->castScriptStatus.castScriptEventIndex = -1;
	}
}

/*
================
AICast_ScriptChange
================
*/
void AICast_ScriptChange( cast_state_t *cs, int newScriptNum ) {
	cast_script_status_t scriptStatusBackup;

	cs->scriptCallIndex++;

	// backup the current scripting
	scriptStatusBackup = cs->castScriptStatus;

	// set the new script to this cast, and reset script status
	cs->castScriptStatus.castScriptStackHead = 0;
	cs->castScriptStatus.castScriptStackChangeTime = level.time;
	cs->castScriptStatus.castScriptEventIndex = newScriptNum;
	cs->castScriptStatus.scriptId = scriptStatusBackup.scriptId + 1;
	cs->castScriptStatus.scriptGotoId = -1;
	cs->castScriptStatus.scriptGotoEnt = -1;
	cs->castScriptStatus.scriptFlags |= SFL_FIRST_CALL;

	// try and run the script, if it doesn't finish, then abort the current script (discard backup)
	if ( AICast_ScriptRun( cs, qtrue ) ) {
		// completed successfully
		cs->castScriptStatus.castScriptStackHead = scriptStatusBackup.castScriptStackHead;
		cs->castScriptStatus.castScriptStackChangeTime = scriptStatusBackup.castScriptStackChangeTime;
		cs->castScriptStatus.castScriptEventIndex = scriptStatusBackup.castScriptEventIndex;
		cs->castScriptStatus.scriptId = scriptStatusBackup.scriptId;
		cs->castScriptStatus.scriptFlags = scriptStatusBackup.scriptFlags;
	}
}

/*
================
AICast_ScriptEvent

  An event has occured, for which a script may exist
================
*/
void AICast_ScriptEvent( struct cast_state_s *cs, char *eventStr, char *params ) {
	int i, eventNum;

	eventNum = -1;

	// find out which event this is
	for ( i = 0; scriptEvents[i].eventStr; i++ )
	{
		if ( !Q_strcasecmp( eventStr, scriptEvents[i].eventStr ) ) { // match found
			eventNum = i;
			break;
		}
	}

	if ( eventNum < 0 ) {
		if ( g_cheats.integer ) { // dev mode
			G_Printf( "devmode-> AICast_ScriptEvent(), unknown event: %s\n", eventStr );
		}
	}

	// show debugging info
	if (    (   ( aicast_debug.integer == 1 ) ||
				(   ( aicast_debug.integer == 2 ) &&
					( ( strlen( aicast_debugname.string ) < 1 ) || ( g_entities[cs->entityNum].aiName && !strcmp( aicast_debugname.string, g_entities[cs->entityNum].aiName ) ) ) ) ) ) {
		G_Printf( "(%s) AIScript event: %s %s ", g_entities[cs->entityNum].aiName, eventStr, params );
	}

	cs->aiFlags &= ~AIFL_DENYACTION;

	// see if this cast has this event
	for ( i = 0; i < cs->numCastScriptEvents; i++ )
	{
		if ( cs->castScriptEvents[i].eventNum == eventNum ) {
			if (    ( !cs->castScriptEvents[i].params )
					||  ( !scriptEvents[eventNum].eventMatch || scriptEvents[eventNum].eventMatch( &cs->castScriptEvents[i], params ) ) ) {

				// show debugging info
				if (    (   ( aicast_debug.integer == 1 ) ||
							(   ( aicast_debug.integer == 2 ) &&
								( ( strlen( aicast_debugname.string ) < 1 ) || ( g_entities[cs->entityNum].aiName && !strcmp( aicast_debugname.string, g_entities[cs->entityNum].aiName ) ) ) ) ) ) {
					G_Printf( "found, calling script: (%s) %s %s\n", g_entities[cs->entityNum].aiName, eventStr, params );
				}

				AICast_ScriptChange( cs, i );
				break;
			}
		}
	}

	// show debugging info
	if (    (   ( aicast_debug.integer == 1 ) ||
				(   ( aicast_debug.integer == 2 ) &&
					( ( strlen( aicast_debugname.string ) < 1 ) || ( g_entities[cs->entityNum].aiName && !strcmp( aicast_debugname.string, g_entities[cs->entityNum].aiName ) ) ) ) ) ) {
		if ( i == cs->numCastScriptEvents ) {
			G_Printf( "not found\n" );
		}
	}

}

/*
================
AICast_ForceScriptEvent

  Definately run this event now, overriding any paised state
================
*/
void AICast_ForceScriptEvent( struct cast_state_s *cs, char *eventStr, char *params ) {
	int oldPauseTime;

	oldPauseTime = cs->scriptPauseTime;
	cs->scriptPauseTime = 0;

	AICast_ScriptEvent( cs, eventStr, params );

	cs->scriptPauseTime = oldPauseTime;
}

/*
=============
AICast_ScriptRun

  returns qtrue if the script completed
=============
*/
qboolean AICast_ScriptRun( cast_state_t *cs, qboolean force ) {
	cast_script_stack_t *stack;

	if ( saveGamePending ) {
		return qfalse;
	}

	if ( strlen( g_missionStats.string ) > 1 ) {
		return qfalse;
	}

	if ( !aicast_scripts.integer ) {
		return qtrue;
	}

	if ( cs->castScriptStatus.castScriptEventIndex < 0 ) {
		return qtrue;
	}

	if ( !cs->castScriptEvents ) {
		cs->castScriptStatus.castScriptEventIndex = -1;
		return qtrue;
	}

	if ( !force && ( cs->scriptPauseTime >= level.time ) ) {
		return qtrue;
	}

	stack = &cs->castScriptEvents[cs->castScriptStatus.castScriptEventIndex].stack;

	if ( !stack->numItems ) {
		cs->castScriptStatus.castScriptEventIndex = -1;
		return qtrue;
	}

	while ( cs->castScriptStatus.castScriptStackHead < stack->numItems )
	{
		//
		// show debugging info
		if (    ( cs->castScriptStatus.castScriptStackChangeTime == level.time ) &&
				(   ( aicast_debug.integer == 1 ) ||
					(   ( aicast_debug.integer == 2 ) &&
						( ( strlen( aicast_debugname.string ) < 1 ) || ( g_entities[cs->entityNum].aiName && !strcmp( aicast_debugname.string, g_entities[cs->entityNum].aiName ) ) ) ) ) ) {
			G_Printf( "(%s) AIScript command: %s %s\n", g_entities[cs->entityNum].aiName, stack->items[cs->castScriptStatus.castScriptStackHead].action->actionString, ( stack->items[cs->castScriptStatus.castScriptStackHead].params ? stack->items[cs->castScriptStatus.castScriptStackHead].params : "" ) );
		}
		//
		if ( !stack->items[cs->castScriptStatus.castScriptStackHead].action->actionFunc( cs, stack->items[cs->castScriptStatus.castScriptStackHead].params ) ) {
			cs->castScriptStatus.scriptFlags &= ~SFL_FIRST_CALL;
			return qfalse;
		}
		// move to the next action in the script
		cs->castScriptStatus.castScriptStackHead++;
		// record the time that this new item became active
		cs->castScriptStatus.castScriptStackChangeTime = level.time;
		// reset misc stuff
		cs->castScriptStatus.scriptGotoId = -1;
		cs->castScriptStatus.scriptGotoEnt = -1;
		cs->castScriptStatus.scriptFlags |= SFL_FIRST_CALL;
	}

	cs->castScriptStatus.castScriptEventIndex = -1;

	return qtrue;
}