g_client.c

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/*
===========================================================================
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 Foobar; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/
//
#include "g_local.h"

// g_client.c -- client functions that don't happen every frame

static vec3_t	playerMins = {-15, -15, -24};
static vec3_t	playerMaxs = {15, 15, 32};

/*QUAKED info_player_deathmatch (1 0 1) (-16 -16 -24) (16 16 32) initial
potential spawning position for deathmatch games.
The first time a player enters the game, they will be at an 'initial' spot.
Targets will be fired when someone spawns in on them.
"nobots" will prevent bots from using this spot.
"nohumans" will prevent non-bots from using this spot.
*/
void SP_info_player_deathmatch( gentity_t *ent ) {
	int		i;

	G_SpawnInt( "nobots", "0", &i);
	if ( i ) {
		ent->flags |= FL_NO_BOTS;
	}
	G_SpawnInt( "nohumans", "0", &i );
	if ( i ) {
		ent->flags |= FL_NO_HUMANS;
	}
}

/*QUAKED info_player_start (1 0 0) (-16 -16 -24) (16 16 32)
equivelant to info_player_deathmatch
*/
void SP_info_player_start(gentity_t *ent) {
	ent->classname = "info_player_deathmatch";
	SP_info_player_deathmatch( ent );
}

/*QUAKED info_player_intermission (1 0 1) (-16 -16 -24) (16 16 32)
The intermission will be viewed from this point.  Target an info_notnull for the view direction.
*/
void SP_info_player_intermission( gentity_t *ent ) {

}



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

  SelectSpawnPoint

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

/*
================
SpotWouldTelefrag

================
*/
qboolean SpotWouldTelefrag( gentity_t *spot ) {
	int			i, num;
	int			touch[MAX_GENTITIES];
	gentity_t	*hit;
	vec3_t		mins, maxs;

	VectorAdd( spot->s.origin, playerMins, mins );
	VectorAdd( spot->s.origin, playerMaxs, maxs );
	num = trap_EntitiesInBox( mins, maxs, touch, MAX_GENTITIES );

	for (i=0 ; i<num ; i++) {
		hit = &g_entities[touch[i]];
		//if ( hit->client && hit->client->ps.stats[STAT_HEALTH] > 0 ) {
		if ( hit->client) {
			return qtrue;
		}

	}

	return qfalse;
}

/*
================
SelectNearestDeathmatchSpawnPoint

Find the spot that we DON'T want to use
================
*/
#define	MAX_SPAWN_POINTS	128
gentity_t *SelectNearestDeathmatchSpawnPoint( vec3_t from ) {
	gentity_t	*spot;
	vec3_t		delta;
	float		dist, nearestDist;
	gentity_t	*nearestSpot;

	nearestDist = 999999;
	nearestSpot = NULL;
	spot = NULL;

	while ((spot = G_Find (spot, FOFS(classname), "info_player_deathmatch")) != NULL) {

		VectorSubtract( spot->s.origin, from, delta );
		dist = VectorLength( delta );
		if ( dist < nearestDist ) {
			nearestDist = dist;
			nearestSpot = spot;
		}
	}

	return nearestSpot;
}


/*
================
SelectRandomDeathmatchSpawnPoint

go to a random point that doesn't telefrag
================
*/
#define	MAX_SPAWN_POINTS	128
gentity_t *SelectRandomDeathmatchSpawnPoint( void ) {
	gentity_t	*spot;
	int			count;
	int			selection;
	gentity_t	*spots[MAX_SPAWN_POINTS];

	count = 0;
	spot = NULL;

	while ((spot = G_Find (spot, FOFS(classname), "info_player_deathmatch")) != NULL) {
		if ( SpotWouldTelefrag( spot ) ) {
			continue;
		}
		spots[ count ] = spot;
		count++;
	}

	if ( !count ) {	// no spots that won't telefrag
		return G_Find( NULL, FOFS(classname), "info_player_deathmatch");
	}

	selection = rand() % count;
	return spots[ selection ];
}

/*
===========
SelectRandomFurthestSpawnPoint

Chooses a player start, deathmatch start, etc
============
*/
gentity_t *SelectRandomFurthestSpawnPoint ( vec3_t avoidPoint, vec3_t origin, vec3_t angles ) {
	gentity_t	*spot;
	vec3_t		delta;
	float		dist;
	float		list_dist[64];
	gentity_t	*list_spot[64];
	int			numSpots, rnd, i, j;

	numSpots = 0;
	spot = NULL;

	while ((spot = G_Find (spot, FOFS(classname), "info_player_deathmatch")) != NULL) {
		if ( SpotWouldTelefrag( spot ) ) {
			continue;
		}
		VectorSubtract( spot->s.origin, avoidPoint, delta );
		dist = VectorLength( delta );
		for (i = 0; i < numSpots; i++) {
			if ( dist > list_dist[i] ) {
				if ( numSpots >= 64 )
					numSpots = 64-1;
				for (j = numSpots; j > i; j--) {
					list_dist[j] = list_dist[j-1];
					list_spot[j] = list_spot[j-1];
				}
				list_dist[i] = dist;
				list_spot[i] = spot;
				numSpots++;
				if (numSpots > 64)
					numSpots = 64;
				break;
			}
		}
		if (i >= numSpots && numSpots < 64) {
			list_dist[numSpots] = dist;
			list_spot[numSpots] = spot;
			numSpots++;
		}
	}
	if (!numSpots) {
		spot = G_Find( NULL, FOFS(classname), "info_player_deathmatch");
		if (!spot)
			G_Error( "Couldn't find a spawn point" );
		VectorCopy (spot->s.origin, origin);
		origin[2] += 9;
		VectorCopy (spot->s.angles, angles);
		return spot;
	}

	// select a random spot from the spawn points furthest away
	rnd = random() * (numSpots / 2);

	VectorCopy (list_spot[rnd]->s.origin, origin);
	origin[2] += 9;
	VectorCopy (list_spot[rnd]->s.angles, angles);

	return list_spot[rnd];
}

/*
===========
SelectSpawnPoint

Chooses a player start, deathmatch start, etc
============
*/
gentity_t *SelectSpawnPoint ( vec3_t avoidPoint, vec3_t origin, vec3_t angles ) {
	return SelectRandomFurthestSpawnPoint( avoidPoint, origin, angles );

	/*
	gentity_t	*spot;
	gentity_t	*nearestSpot;

	nearestSpot = SelectNearestDeathmatchSpawnPoint( avoidPoint );

	spot = SelectRandomDeathmatchSpawnPoint ( );
	if ( spot == nearestSpot ) {
		// roll again if it would be real close to point of death
		spot = SelectRandomDeathmatchSpawnPoint ( );
		if ( spot == nearestSpot ) {
			// last try
			spot = SelectRandomDeathmatchSpawnPoint ( );
		}		
	}

	// find a single player start spot
	if (!spot) {
		G_Error( "Couldn't find a spawn point" );
	}

	VectorCopy (spot->s.origin, origin);
	origin[2] += 9;
	VectorCopy (spot->s.angles, angles);

	return spot;
	*/
}

/*
===========
SelectInitialSpawnPoint

Try to find a spawn point marked 'initial', otherwise
use normal spawn selection.
============
*/
gentity_t *SelectInitialSpawnPoint( vec3_t origin, vec3_t angles ) {
	gentity_t	*spot;

	spot = NULL;
	while ((spot = G_Find (spot, FOFS(classname), "info_player_deathmatch")) != NULL) {
		if ( spot->spawnflags & 1 ) {
			break;
		}
	}

	if ( !spot || SpotWouldTelefrag( spot ) ) {
		return SelectSpawnPoint( vec3_origin, origin, angles );
	}

	VectorCopy (spot->s.origin, origin);
	origin[2] += 9;
	VectorCopy (spot->s.angles, angles);

	return spot;
}

/*
===========
SelectSpectatorSpawnPoint

============
*/
gentity_t *SelectSpectatorSpawnPoint( vec3_t origin, vec3_t angles ) {
	FindIntermissionPoint();

	VectorCopy( level.intermission_origin, origin );
	VectorCopy( level.intermission_angle, angles );

	return NULL;
}

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

BODYQUE

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

/*
===============
InitBodyQue
===============
*/
void InitBodyQue (void) {
	int		i;
	gentity_t	*ent;

	level.bodyQueIndex = 0;
	for (i=0; i<BODY_QUEUE_SIZE ; i++) {
		ent = G_Spawn();
		ent->classname = "bodyque";
		ent->neverFree = qtrue;
		level.bodyQue[i] = ent;
	}
}

/*
=============
BodySink

After sitting around for five seconds, fall into the ground and dissapear
=============
*/
void BodySink( gentity_t *ent ) {
	if ( level.time - ent->timestamp > 6500 ) {
		// the body ques are never actually freed, they are just unlinked
		trap_UnlinkEntity( ent );
		ent->physicsObject = qfalse;
		return;	
	}
	ent->nextthink = level.time + 100;
	ent->s.pos.trBase[2] -= 1;
}

/*
=============
CopyToBodyQue

A player is respawning, so make an entity that looks
just like the existing corpse to leave behind.
=============
*/
void CopyToBodyQue( gentity_t *ent ) {
#ifdef MISSIONPACK
	gentity_t	*e;
	int i;
#endif
	gentity_t		*body;
	int			contents;

	trap_UnlinkEntity (ent);

	// if client is in a nodrop area, don't leave the body
	contents = trap_PointContents( ent->s.origin, -1 );
	if ( contents & CONTENTS_NODROP ) {
		return;
	}

	// grab a body que and cycle to the next one
	body = level.bodyQue[ level.bodyQueIndex ];
	level.bodyQueIndex = (level.bodyQueIndex + 1) % BODY_QUEUE_SIZE;

	trap_UnlinkEntity (body);

	body->s = ent->s;
	body->s.eFlags = EF_DEAD;		// clear EF_TALK, etc
#ifdef MISSIONPACK
	if ( ent->s.eFlags & EF_KAMIKAZE ) {
		body->s.eFlags |= EF_KAMIKAZE;

		// check if there is a kamikaze timer around for this owner
		for (i = 0; i < MAX_GENTITIES; i++) {
			e = &g_entities[i];
			if (!e->inuse)
				continue;
			if (e->activator != ent)
				continue;
			if (strcmp(e->classname, "kamikaze timer"))
				continue;
			e->activator = body;
			break;
		}
	}
#endif
	body->s.powerups = 0;	// clear powerups
	body->s.loopSound = 0;	// clear lava burning
	body->s.number = body - g_entities;
	body->timestamp = level.time;
	body->physicsObject = qtrue;
	body->physicsBounce = 0;		// don't bounce
	if ( body->s.groundEntityNum == ENTITYNUM_NONE ) {
		body->s.pos.trType = TR_GRAVITY;
		body->s.pos.trTime = level.time;
		VectorCopy( ent->client->ps.velocity, body->s.pos.trDelta );
	} else {
		body->s.pos.trType = TR_STATIONARY;
	}
	body->s.event = 0;

	// change the animation to the last-frame only, so the sequence
	// doesn't repeat anew for the body
	switch ( body->s.legsAnim & ~ANIM_TOGGLEBIT ) {
	case BOTH_DEATH1:
	case BOTH_DEAD1:
		body->s.torsoAnim = body->s.legsAnim = BOTH_DEAD1;
		break;
	case BOTH_DEATH2:
	case BOTH_DEAD2:
		body->s.torsoAnim = body->s.legsAnim = BOTH_DEAD2;
		break;
	case BOTH_DEATH3:
	case BOTH_DEAD3:
	default:
		body->s.torsoAnim = body->s.legsAnim = BOTH_DEAD3;
		break;
	}

	body->r.svFlags = ent->r.svFlags;
	VectorCopy (ent->r.mins, body->r.mins);
	VectorCopy (ent->r.maxs, body->r.maxs);
	VectorCopy (ent->r.absmin, body->r.absmin);
	VectorCopy (ent->r.absmax, body->r.absmax);