DoomRTX/neo/doom3/game/WorldSpawn.cpp

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

IceTech GPL Source Code
Copyright (C) 2026 Justin Marshall 

This file is part of the IceTech GPL Source Code (?IceTech Source Code?).  

IceTech 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.

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

In addition, the IceTech 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 IceTech 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 Justin Marshall, justinmarshall20@gmail.com

===========================================================================
*/
/*
game_worldspawn.cpp

Worldspawn class.  Each map has one worldspawn which handles global spawnargs.

*/

#include "precompiled.h"
#pragma hdrstop

#include "Game_local.h"

/*
================
idWorldspawn

Every map should have exactly one worldspawn.
================
*/
CLASS_DECLARATION( idEntity, idWorldspawn )
	EVENT( EV_Remove,				idWorldspawn::Event_Remove )
	EVENT( EV_SafeRemove,			idWorldspawn::Event_Remove )
END_CLASS

static renderGlobalFogMode_t ParseGlobalFogMode( const char *mode ) {
	if ( !idStr::Icmp( mode, "linear" ) ) {
		return RENDER_GLOBAL_FOG_LINEAR;
	}
	if ( !idStr::Icmp( mode, "exp2" ) ) {
		return RENDER_GLOBAL_FOG_EXP2;
	}
	return RENDER_GLOBAL_FOG_EXP;
}

static void SetWorldspawnGlobalFogParms( const idDict &spawnArgs ) {
	idVec3	color;
	idStr	mode;

	memset( &gameLocal.globalFogParms, 0, sizeof( gameLocal.globalFogParms ) );
	gameLocal.globalFogParms.mode = RENDER_GLOBAL_FOG_EXP;
	gameLocal.globalFogParms.density = 1.0f;
	gameLocal.globalFogParms.end = 1.0f;
	gameLocal.globalFogParms.color.Set( 0.0f, 0.0f, 0.0f, 1.0f );

	gameLocal.globalFogParms.enabled = spawnArgs.GetBool( "globalFog", spawnArgs.GetString( "fog_global", "0" ) );

	if ( spawnArgs.GetString( "globalFogMode", "", mode ) || spawnArgs.GetString( "fog_mode", "", mode ) ) {
		gameLocal.globalFogParms.mode = ParseGlobalFogMode( mode.c_str() );
	}

	gameLocal.globalFogParms.density = spawnArgs.GetFloat( "globalFogDensity", spawnArgs.GetString( "fog_density", va( "%f", gameLocal.globalFogParms.density ) ) );
	gameLocal.globalFogParms.start = spawnArgs.GetFloat( "globalFogStart", spawnArgs.GetString( "fog_start", va( "%f", gameLocal.globalFogParms.start ) ) );
	gameLocal.globalFogParms.end = spawnArgs.GetFloat( "globalFogEnd", spawnArgs.GetString( "fog_end", va( "%f", gameLocal.globalFogParms.end ) ) );

	if ( spawnArgs.GetVector( "globalFogColor", spawnArgs.GetString( "fog_color", "0 0 0" ), color ) ) {
		gameLocal.globalFogParms.color.Set( color.x, color.y, color.z, spawnArgs.GetFloat( "globalFogAlpha", spawnArgs.GetString( "fog_alpha", "1" ) ) );
	}
}

/*
================
idWorldspawn::Spawn
================
*/
void idWorldspawn::Spawn( void ) {
	idStr				scriptname;
	idThread			*thread;
	const function_t	*func;
	const idKeyValue	*kv;

	assert( gameLocal.world == NULL );
	gameLocal.world = this;

	g_gravity.SetFloat( spawnArgs.GetFloat( "gravity", va( "%f", DEFAULT_GRAVITY ) ) );
	SetWorldspawnGlobalFogParms( spawnArgs );

	// disable stamina on hell levels
	if ( spawnArgs.GetBool( "no_stamina" ) ) {
		pm_stamina.SetFloat( 0.0f );
	}

	// load script
	scriptname = gameLocal.GetMapName();
	scriptname.SetFileExtension( ".script" );
	if ( fileSystem->ReadFile( scriptname, NULL, NULL ) > 0 ) {
		gameLocal.program.CompileFile( scriptname );

		// call the main function by default
		func = gameLocal.program.FindFunction( "main" );
		if ( func != NULL ) {
			thread = new idThread( func );
			thread->DelayedStart( 0 );
		}
	}

	// call any functions specified in worldspawn
	kv = spawnArgs.MatchPrefix( "call" );
	while( kv != NULL ) {
		func = gameLocal.program.FindFunction( kv->GetValue() );
		if ( func == NULL ) {
			gameLocal.Error( "Function '%s' not found in script for '%s' key on worldspawn", kv->GetValue().c_str(), kv->GetKey().c_str() );
		}

		thread = new idThread( func );
		thread->DelayedStart( 0 );
		kv = spawnArgs.MatchPrefix( "call", kv );
	}
}

/*
=================
idWorldspawn::Save
=================
*/
void idWorldspawn::Save( idRestoreGame *savefile ) {
}

/*
=================
idWorldspawn::Restore
=================
*/
void idWorldspawn::Restore( idRestoreGame *savefile ) {
	assert( gameLocal.world == this );

	g_gravity.SetFloat( spawnArgs.GetFloat( "gravity", va( "%f", DEFAULT_GRAVITY ) ) );
	SetWorldspawnGlobalFogParms( spawnArgs );

	// disable stamina on hell levels
	if ( spawnArgs.GetBool( "no_stamina" ) ) {
		pm_stamina.SetFloat( 0.0f );
	}
}

/*
================
idWorldspawn::~idWorldspawn
================
*/
idWorldspawn::~idWorldspawn() {
	if ( gameLocal.world == this ) {
		gameLocal.world = NULL;
	}
}

/*
================
idWorldspawn::Event_Remove
================
*/
void idWorldspawn::Event_Remove( void ) {
	gameLocal.Error( "Tried to remove world" );
}