g_spawn.c

Quake 2 Source code for students by Theerthan You can also download from idsoftwares.com

/*
Copyright (C) 1997-2001 Id Software, Inc.

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 2
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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

#include "g_local.h"

typedef struct
{
	char	*name;
	void	(*spawn)(edict_t *ent);
} spawn_t;


void SP_item_health (edict_t *self);
void SP_item_health_small (edict_t *self);
void SP_item_health_large (edict_t *self);
void SP_item_health_mega (edict_t *self);

void SP_info_player_start (edict_t *ent);
void SP_info_player_deathmatch (edict_t *ent);
void SP_info_player_coop (edict_t *ent);
void SP_info_player_intermission (edict_t *ent);

void SP_func_plat (edict_t *ent);
void SP_func_rotating (edict_t *ent);
void SP_func_button (edict_t *ent);
void SP_func_door (edict_t *ent);
void SP_func_door_secret (edict_t *ent);
void SP_func_door_rotating (edict_t *ent);
void SP_func_water (edict_t *ent);
void SP_func_train (edict_t *ent);
void SP_func_conveyor (edict_t *self);
void SP_func_wall (edict_t *self);
void SP_func_object (edict_t *self);
void SP_func_explosive (edict_t *self);
void SP_func_timer (edict_t *self);
void SP_func_areaportal (edict_t *ent);
void SP_func_clock (edict_t *ent);
void SP_func_killbox (edict_t *ent);

void SP_trigger_always (edict_t *ent);
void SP_trigger_once (edict_t *ent);
void SP_trigger_multiple (edict_t *ent);
void SP_trigger_relay (edict_t *ent);
void SP_trigger_push (edict_t *ent);
void SP_trigger_hurt (edict_t *ent);
void SP_trigger_key (edict_t *ent);
void SP_trigger_counter (edict_t *ent);
void SP_trigger_elevator (edict_t *ent);
void SP_trigger_gravity (edict_t *ent);
void SP_trigger_monsterjump (edict_t *ent);

void SP_target_temp_entity (edict_t *ent);
void SP_target_speaker (edict_t *ent);
void SP_target_explosion (edict_t *ent);
void SP_target_changelevel (edict_t *ent);
void SP_target_secret (edict_t *ent);
void SP_target_goal (edict_t *ent);
void SP_target_splash (edict_t *ent);
void SP_target_spawner (edict_t *ent);
void SP_target_blaster (edict_t *ent);
void SP_target_crosslevel_trigger (edict_t *ent);
void SP_target_crosslevel_target (edict_t *ent);
void SP_target_laser (edict_t *self);
void SP_target_help (edict_t *ent);
void SP_target_actor (edict_t *ent);
void SP_target_lightramp (edict_t *self);
void SP_target_earthquake (edict_t *ent);
void SP_target_character (edict_t *ent);
void SP_target_string (edict_t *ent);

void SP_worldspawn (edict_t *ent);
void SP_viewthing (edict_t *ent);

void SP_light (edict_t *self);
void SP_light_mine1 (edict_t *ent);
void SP_light_mine2 (edict_t *ent);
void SP_info_null (edict_t *self);
void SP_info_notnull (edict_t *self);
void SP_path_corner (edict_t *self);
void SP_point_combat (edict_t *self);

void SP_misc_explobox (edict_t *self);
void SP_misc_banner (edict_t *self);
void SP_misc_satellite_dish (edict_t *self);
void SP_misc_actor (edict_t *self);
void SP_misc_gib_arm (edict_t *self);
void SP_misc_gib_leg (edict_t *self);
void SP_misc_gib_head (edict_t *self);
void SP_misc_insane (edict_t *self);
void SP_misc_deadsoldier (edict_t *self);
void SP_misc_viper (edict_t *self);
void SP_misc_viper_bomb (edict_t *self);
void SP_misc_bigviper (edict_t *self);
void SP_misc_strogg_ship (edict_t *self);
void SP_misc_teleporter (edict_t *self);
void SP_misc_teleporter_dest (edict_t *self);
void SP_misc_blackhole (edict_t *self);
void SP_misc_eastertank (edict_t *self);
void SP_misc_easterchick (edict_t *self);
void SP_misc_easterchick2 (edict_t *self);

void SP_monster_berserk (edict_t *self);
void SP_monster_gladiator (edict_t *self);
void SP_monster_gunner (edict_t *self);
void SP_monster_infantry (edict_t *self);
void SP_monster_soldier_light (edict_t *self);
void SP_monster_soldier (edict_t *self);
void SP_monster_soldier_ss (edict_t *self);
void SP_monster_tank (edict_t *self);
void SP_monster_medic (edict_t *self);
void SP_monster_flipper (edict_t *self);
void SP_monster_chick (edict_t *self);
void SP_monster_parasite (edict_t *self);
void SP_monster_flyer (edict_t *self);
void SP_monster_brain (edict_t *self);
void SP_monster_floater (edict_t *self);
void SP_monster_hover (edict_t *self);
void SP_monster_mutant (edict_t *self);
void SP_monster_supertank (edict_t *self);
void SP_monster_boss2 (edict_t *self);
void SP_monster_jorg (edict_t *self);
void SP_monster_boss3_stand (edict_t *self);

void SP_monster_commander_body (edict_t *self);

void SP_turret_breach (edict_t *self);
void SP_turret_base (edict_t *self);
void SP_turret_driver (edict_t *self);


spawn_t	spawns[] = {
	{"item_health", SP_item_health},
	{"item_health_small", SP_item_health_small},
	{"item_health_large", SP_item_health_large},
	{"item_health_mega", SP_item_health_mega},

	{"info_player_start", SP_info_player_start},
	{"info_player_deathmatch", SP_info_player_deathmatch},
	{"info_player_coop", SP_info_player_coop},
	{"info_player_intermission", SP_info_player_intermission},
//ZOID
	{"info_player_team1", SP_info_player_team1},
	{"info_player_team2", SP_info_player_team2},
//ZOID

	{"func_plat", SP_func_plat},
	{"func_button", SP_func_button},
	{"func_door", SP_func_door},
	{"func_door_secret", SP_func_door_secret},
	{"func_door_rotating", SP_func_door_rotating},
	{"func_rotating", SP_func_rotating},
	{"func_train", SP_func_train},
	{"func_water", SP_func_water},
	{"func_conveyor", SP_func_conveyor},
	{"func_areaportal", SP_func_areaportal},
	{"func_clock", SP_func_clock},
	{"func_wall", SP_func_wall},
	{"func_object", SP_func_object},
	{"func_timer", SP_func_timer},
	{"func_explosive", SP_func_explosive},
	{"func_killbox", SP_func_killbox},

	{"trigger_always", SP_trigger_always},
	{"trigger_once", SP_trigger_once},
	{"trigger_multiple", SP_trigger_multiple},
	{"trigger_relay", SP_trigger_relay},
	{"trigger_push", SP_trigger_push},
	{"trigger_hurt", SP_trigger_hurt},
	{"trigger_key", SP_trigger_key},
	{"trigger_counter", SP_trigger_counter},
	{"trigger_elevator", SP_trigger_elevator},
	{"trigger_gravity", SP_trigger_gravity},
	{"trigger_monsterjump", SP_trigger_monsterjump},

	{"target_temp_entity", SP_target_temp_entity},
	{"target_speaker", SP_target_speaker},
	{"target_explosion", SP_target_explosion},
	{"target_changelevel", SP_target_changelevel},
	{"target_secret", SP_target_secret},
	{"target_goal", SP_target_goal},
	{"target_splash", SP_target_splash},
	{"target_spawner", SP_target_spawner},
	{"target_blaster", SP_target_blaster},
	{"target_crosslevel_trigger", SP_target_crosslevel_trigger},
	{"target_crosslevel_target", SP_target_crosslevel_target},
	{"target_laser", SP_target_laser},
	{"target_help", SP_target_help},
#if 0 // remove monster code
	{"target_actor", SP_target_actor},
#endif
	{"target_lightramp", SP_target_lightramp},
	{"target_earthquake", SP_target_earthquake},
	{"target_character", SP_target_character},
	{"target_string", SP_target_string},

	{"worldspawn", SP_worldspawn},
	{"viewthing", SP_viewthing},

	{"light", SP_light},
	{"light_mine1", SP_light_mine1},
	{"light_mine2", SP_light_mine2},
	{"info_null", SP_info_null},
	{"func_group", SP_info_null},
	{"info_notnull", SP_info_notnull},
	{"path_corner", SP_path_corner},
	{"point_combat", SP_point_combat},

	{"misc_explobox", SP_misc_explobox},
	{"misc_banner", SP_misc_banner},
//ZOID
	{"misc_ctf_banner", SP_misc_ctf_banner},
	{"misc_ctf_small_banner", SP_misc_ctf_small_banner},
//ZOID
	{"misc_satellite_dish", SP_misc_satellite_dish},
#if 0 // remove monster code
	{"misc_actor", SP_misc_actor},
#endif
	{"misc_gib_arm", SP_misc_gib_arm},
	{"misc_gib_leg", SP_misc_gib_leg},
	{"misc_gib_head", SP_misc_gib_head},
#if 0 // remove monster code
	{"misc_insane", SP_misc_insane},
#endif
	{"misc_deadsoldier", SP_misc_deadsoldier},
	{"misc_viper", SP_misc_viper},
	{"misc_viper_bomb", SP_misc_viper_bomb},
	{"misc_bigviper", SP_misc_bigviper},
	{"misc_strogg_ship", SP_misc_strogg_ship},
	{"misc_teleporter", SP_misc_teleporter},
	{"misc_teleporter_dest", SP_misc_teleporter_dest},
//ZOID
	{"trigger_teleport", SP_trigger_teleport},
	{"info_teleport_destination", SP_info_teleport_destination},
//ZOID
	{"misc_blackhole", SP_misc_blackhole},
	{"misc_eastertank", SP_misc_eastertank},
	{"misc_easterchick", SP_misc_easterchick},
	{"misc_easterchick2", SP_misc_easterchick2},

#if 0 // remove monster code
	{"monster_berserk", SP_monster_berserk},
	{"monster_gladiator", SP_monster_gladiator},
	{"monster_gunner", SP_monster_gunner},
	{"monster_infantry", SP_monster_infantry},
	{"monster_soldier_light", SP_monster_soldier_light},
	{"monster_soldier", SP_monster_soldier},
	{"monster_soldier_ss", SP_monster_soldier_ss},
	{"monster_tank", SP_monster_tank},
	{"monster_tank_commander", SP_monster_tank},
	{"monster_medic", SP_monster_medic},
	{"monster_flipper", SP_monster_flipper},
	{"monster_chick", SP_monster_chick},
	{"monster_parasite", SP_monster_parasite},
	{"monster_flyer", SP_monster_flyer},
	{"monster_brain", SP_monster_brain},
	{"monster_floater", SP_monster_floater},
	{"monster_hover", SP_monster_hover},
	{"monster_mutant", SP_monster_mutant},
	{"monster_supertank", SP_monster_supertank},
	{"monster_boss2", SP_monster_boss2},
	{"monster_boss3_stand", SP_monster_boss3_stand},
	{"monster_jorg", SP_monster_jorg},

	{"monster_commander_body", SP_monster_commander_body},

	{"turret_breach", SP_turret_breach},
	{"turret_base", SP_turret_base},
	{"turret_driver", SP_turret_driver},
#endif

	{NULL, NULL}
};

/*
===============
ED_CallSpawn

Finds the spawn function for the entity and calls it
===============
*/
void ED_CallSpawn (edict_t *ent)
{
	spawn_t	*s;
	gitem_t	*item;
	int		i;

	if (!ent->classname)
	{
		gi.dprintf ("ED_CallSpawn: NULL classname\n");
		return;
	}

	// check item spawn functions
	for (i=0,item=itemlist ; i<game.num_items ; i++,item++)
	{
		if (!item->classname)
			continue;
		if (!strcmp(item->classname, ent->classname))
		{	// found it
			SpawnItem (ent, item);
			return;
		}
	}

	// check normal spawn functions
	for (s=spawns ; s->name ; s++)
	{
		if (!strcmp(s->name, ent->classname))
		{	// found it
			s->spawn (ent);
			return;
		}
	}
	gi.dprintf ("%s doesn't have a spawn function\n", ent->classname);
}

/*
=============
ED_NewString
=============
*/
char *ED_NewString (char *string)
{
	char	*newb, *new_p;
	int		i,l;
	
	l = strlen(string) + 1;

	newb = gi.TagMalloc (l, TAG_LEVEL);

	new_p = newb;

	for (i=0 ; i< l ; i++)
	{
		if (string[i] == '\\' && i < l-1)
		{
			i++;
			if (string[i] == 'n')
				*new_p++ = '\n';
			else
				*new_p++ = '\\';
		}
		else
			*new_p++ = string[i];
	}
	
	return newb;
}




/*
===============
ED_ParseField

Takes a key/value pair and sets the binary values
in an edict
===============
*/
void ED_ParseField (char *key, char *value, edict_t *ent)
{
	field_t	*f;
	byte	*b;
	float	v;
	vec3_t	vec;

	for (f=fields ; f->name ; f++)
	{
		if (!Q_stricmp(f->name, key))
		{	// found it
			if (f->flags & FFL_SPAWNTEMP)
				b = (byte *)&st;
			else
				b = (byte *)ent;

			switch (f->type)
			{
			case F_LSTRING:
				*(char **)(b+f->ofs) = ED_NewString (value);
				break;
			case F_VECTOR:
				sscanf (value, "%f %f %f", &vec[0], &vec[1], &vec[2]);
				((float *)(b+f->ofs))[0] = vec[0];
				((float *)(b+f->ofs))[1] = vec[1];
				((float *)(b+f->ofs))[2] = vec[2];
				break;
			case F_INT:
				*(int *)(b+f->ofs) = atoi(value);
				break;
			case F_FLOAT:
				*(float *)(b+f->ofs) = atof(value);
				break;
			case F_ANGLEHACK:
				v = atof(value);
				((float *)(b+f->ofs))[0] = 0;
				((float *)(b+f->ofs))[1] = v;
				((float *)(b+f->ofs))[2] = 0;
				break;
			case F_IGNORE:
				break;
			}
			return;
		}
	}
	gi.dprintf ("%s is not a field\n", key);
}

/*
====================
ED_ParseEdict

Parses an edict out of the given string, returning the new position
ed should be a properly initialized empty edict.
====================
*/
char *ED_ParseEdict (char *data, edict_t *ent)
{
	qboolean	init;
	char		keyname[256];
	char		*com_token;

	init = false;
	memset (&st, 0, sizeof(st));

// go through all the dictionary pairs
	while (1)
	{	
	// parse key
		com_token = COM_Parse (&data);
		if (com_token[0] == '}')
			break;
		if (!data)
			gi.error ("ED_ParseEntity: EOF without closing brace");

		strncpy (keyname, com_token, sizeof(keyname)-1);
		
	// parse value	
		com_token = COM_Parse (&data);
		if (!data)
			gi.error ("ED_ParseEntity: EOF without closing brace");

		if (com_token[0] == '}')
			gi.error ("ED_ParseEntity: closing brace without data");

		init = true;	

	// keynames with a leading underscore are used for utility comments,
	// and are immediately discarded by quake
		if (keyname[0] == '_')
			continue;

		ED_ParseField (keyname, com_token, ent);
	}

	if (!init)
		memset (ent, 0, sizeof(*ent));

	return data;
}


/*
================
G_FindTeams

Chain together all entities with a matching team field.

All but the first will have the FL_TEAMSLAVE flag set.
All but the last will have the teamchain field set to the next one
================
*/
void G_FindTeams (void)
{
	edict_t	*e, *e2, *chain;
	int		i, j;
	int		c, c2;