q3rally/engine/code/game/g_missile.c

/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
Copyright (C) 2002-2021 Q3Rally Team (Per Thormann - q3rally@gmail.com)

This file is part of q3rally source code.

q3rally 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.

q3rally 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 q3rally; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/
//
#include "g_local.h"

#define	MISSILE_PRESTEP_TIME	50


/*
=================
Missile_Smooth_H
=================
*/
void Missile_Smooth_H( gentity_t *ent, vec3_t origin, trace_t *tr )
{
	VectorCopy( origin,ent->s.pos.trBase );
	ent->s.pos.trTime = level.time;
}

/*
================
G_BounceMissile
================
*/
void G_BounceMissile( gentity_t *ent, trace_t *trace ) {
	vec3_t	velocity;
	float	dot;
	int		hitTime;

// STONELANCE
	if ( ent->s.eFlags & EF_BOUNCE_NONE ){
		ent->clipmask = MASK_SHOT;
		G_SetOrigin( ent, trace->endpos );
		return;
	}
// END

	// reflect the velocity on the trace plane
	hitTime = level.previousTime + ( level.time - level.previousTime ) * trace->fraction;
	BG_EvaluateTrajectoryDelta( &ent->s.pos, hitTime, velocity );
	dot = DotProduct( velocity, trace->plane.normal );
	VectorMA( velocity, -2*dot, trace->plane.normal, ent->s.pos.trDelta );

	if ( ent->s.eFlags & EF_BOUNCE_HALF ) {
		VectorScale( ent->s.pos.trDelta, 0.65, ent->s.pos.trDelta );
		// check for stop
		if ( trace->plane.normal[2] > 0.2 && VectorLength( ent->s.pos.trDelta ) < 40 ) {
			G_SetOrigin( ent, trace->endpos );
			ent->s.time = level.time / 4;
			return;
		}
	}

	VectorAdd( ent->r.currentOrigin, trace->plane.normal, ent->r.currentOrigin);
	VectorCopy( ent->r.currentOrigin, ent->s.pos.trBase );
	ent->s.pos.trTime = level.time;
}

/*
=================
G_ExplodeCluster
=================
*/
void G_ExplodeCluster( gentity_t *ent ){
    vec3_t      dir;
	
	VectorSet(dir, 0, 11, -66);
	fire_cluster_grenade2(ent->parent, ent->r.currentOrigin, dir);
    ent->parent->s.pos.trType = TR_GRAVITY;
    
	VectorSet(dir, 22, 22, -66);
    fire_cluster_grenade2(ent->parent, ent->r.currentOrigin, dir);
    
	VectorSet(dir, -22, 22, -66);
    fire_cluster_grenade2(ent->parent, ent->r.currentOrigin, dir);
    
	VectorSet(dir, 0, -11, -66);
    fire_cluster_grenade2(ent->parent, ent->r.currentOrigin, dir);
    
	VectorSet(dir, -11, -11, -66);
    fire_cluster_grenade2(ent->parent, ent->r.currentOrigin, dir);
    	
	VectorSet(dir, 11, -11, -66);
    fire_cluster_grenade2(ent->parent, ent->r.currentOrigin, dir);  


}

/*
================
G_ExplodeMissile

Explode a missile without an impact
================
*/
void G_ExplodeMissile( gentity_t *ent ) {
	vec3_t		dir;
	vec3_t		origin;

	ent->takedamage = qfalse;	//TBB differs from q3a

	BG_EvaluateTrajectory( &ent->s.pos, level.time, origin );
	SnapVector( origin );
	G_SetOrigin( ent, origin );

	// we don't have a valid direction, so just point straight up
	dir[0] = dir[1] = 0;
	dir[2] = 1;

	ent->s.eType = ET_GENERAL;
	G_AddEvent( ent, EV_MISSILE_MISS, DirToByte( dir ) );

	ent->freeAfterEvent = qtrue;

	// splash damage
	if ( ent->splashDamage ) {
// STONELANCE
		CheckForOil(ent->r.currentOrigin, ent->splashRadius);
// END

		if( G_RadiusDamage( ent->r.currentOrigin, ent->parent, ent->splashDamage, ent->splashRadius, ent
			, ent->splashMethodOfDeath ) ) {
			g_entities[ent->r.ownerNum].client->accuracy_hits++;
		}
	}

	//TBB - added this line for reference, Q3R
	{
    if (!strcmp(ent->classname, "fire_cluster_grenade"))
        G_ExplodeCluster( ent );
	}
    //TBB - added this line for reference, Q3R
	    
	trap_LinkEntity( ent );
}

//Q3Rally Code Start

/*
================
G_MissileDie

Destroy a missile
================
*/
void G_MissileDie( gentity_t *self, gentity_t *inflictor,

        gentity_t *attacker, int damage, int mod ) {
        if (inflictor == self)
                return;
        self->takedamage = qfalse;
        self->think = G_ExplodeMissile;
        self->nextthink = level.time + 10;
}

/*
=================
fire_flame
=================
*/
gentity_t *fire_flame (gentity_t *self, vec3_t start, vec3_t dir) {
	gentity_t		*bolt;

	VectorNormalize (dir);

	bolt = G_Spawn();
	bolt->classname = "flame";
	bolt->nextthink = level.time + 1500;
	bolt->think = G_ExplodeMissile;
	bolt->s.eType = ET_MISSILE;
	bolt->r.svFlags = SVF_USE_CURRENT_ORIGIN;
	bolt->s.weapon = WP_FLAME_THROWER;
	bolt->r.ownerNum = self->s.number;
	bolt->parent = self;
	bolt->damage = 30;
	bolt->splashDamage = 25;
	bolt->splashRadius = 45;
	bolt->methodOfDeath = MOD_FLAME_THROWER;
	bolt->splashMethodOfDeath = MOD_PLASMA_SPLASH;
	bolt->clipmask = MASK_SHOT;

	bolt->s.pos.trType = TR_LINEAR;
	bolt->s.pos.trTime = level.time - MISSILE_PRESTEP_TIME;// move a bit on the very first frame
	VectorCopy( start, bolt->s.pos.trBase );
	VectorScale( dir, 300, bolt->s.pos.trDelta );
	SnapVector( bolt->s.pos.trDelta );// save net bandwidth

	VectorCopy (start, bolt->r.currentOrigin);

	return bolt;
}

//TBB

/*
=================
fire_cluster_flame
=================
*/
gentity_t *fire_cluster_flame (gentity_t *self, vec3_t start, vec3_t dir) {
	gentity_t		*bolt;

	VectorNormalize (dir);

	bolt = G_Spawn();
	bolt->classname = "fire_cluster_flame";
	bolt->nextthink = level.time + 500;
	bolt->think = G_ExplodeMissile;
	bolt->s.eType = ET_MISSILE;
	bolt->r.svFlags = SVF_USE_CURRENT_ORIGIN;
	bolt->s.weapon = WP_FLAME_THROWER;
	bolt->r.ownerNum = self->s.number;
	bolt->parent = self;
	bolt->damage = 10;
	bolt->splashDamage = 5;
	bolt->splashRadius = 25;
	bolt->methodOfDeath = MOD_FLAME_THROWER;
	bolt->splashMethodOfDeath = MOD_PLASMA_SPLASH;
	bolt->clipmask = MASK_SHOT;

	bolt->s.pos.trType = TR_LINEAR;
	bolt->s.pos.trTime = level.time - MISSILE_PRESTEP_TIME;// move a bit on the very first frame
	VectorCopy( start, bolt->s.pos.trBase );
	VectorScale( dir, 400, bolt->s.pos.trDelta );
	SnapVector( bolt->s.pos.trDelta );// save net bandwidth

	VectorCopy (start, bolt->r.currentOrigin);

	return bolt; //.5s & 400u/s is 200units ahead
}
//TBB FIN


//Q3Rally Code END

#ifdef MISSIONPACK
/*
================
ProximityMine_Explode
================
*/
static void ProximityMine_Explode( gentity_t *mine ) {
	G_ExplodeMissile( mine );
	// if the prox mine has a trigger free it
	if (mine->activator) {
		G_FreeEntity(mine->activator);
		mine->activator = NULL;
	}
}

/*
================
ProximityMine_Die
================
*/
static void ProximityMine_Die( gentity_t *ent, gentity_t *inflictor, gentity_t *attacker, int damage, int mod ) {
	ent->think = ProximityMine_Explode;
	ent->nextthink = level.time + 1;
}

/*
================
ProximityMine_Trigger
================
*/
void ProximityMine_Trigger( gentity_t *trigger, gentity_t *other, trace_t *trace ) {
	vec3_t		v;
	gentity_t	*mine;

	if( !other->client ) {
		return;
	}

	// trigger is a cube, do a distance test now to act as if it's a sphere
	VectorSubtract( trigger->s.pos.trBase, other->s.pos.trBase, v );
	if( VectorLength( v ) > trigger->parent->splashRadius ) {
		return;
	}


	if ( g_gametype.integer >= GT_TEAM ) {
		// don't trigger same team mines
		if (trigger->parent->s.generic1 == other->client->sess.sessionTeam) {
			return;
		}
	}

	// ok, now check for ability to damage so we don't get triggered through walls, closed doors, etc...
	if( !CanDamage( other, trigger->s.pos.trBase ) ) {
		return;
	}

	// trigger the mine!
	mine = trigger->parent;
	mine->s.loopSound = 0;
	G_AddEvent( mine, EV_PROXIMITY_MINE_TRIGGER, 0 );
	mine->nextthink = level.time + 500;

	G_FreeEntity( trigger );
}

/*
================
ProximityMine_Activate
================
*/
static void ProximityMine_Activate( gentity_t *ent ) {
	gentity_t	*trigger;
	float		r;

	ent->think = ProximityMine_Explode;
	ent->nextthink = level.time + g_proxMineTimeout.integer;

	ent->takedamage = qtrue;
	ent->health = 1;
	ent->die = ProximityMine_Die;

	ent->s.loopSound = G_SoundIndex( "sound/weapons/proxmine/wstbtick.wav" );

	// build the proximity trigger
	trigger = G_Spawn ();

	trigger->classname = "proxmine_trigger";

	r = ent->splashRadius;
	VectorSet( trigger->r.mins, -r, -r, -r );
	VectorSet( trigger->r.maxs, r, r, r );

	G_SetOrigin( trigger, ent->s.pos.trBase );

	trigger->parent = ent;
	trigger->r.contents = CONTENTS_TRIGGER;
	trigger->touch = ProximityMine_Trigger;

	trap_LinkEntity (trigger);

	// set pointer to trigger so the entity can be freed when the mine explodes
	ent->activator = trigger;
}

/*
================
ProximityMine_ExplodeOnPlayer
================
*/
static void ProximityMine_ExplodeOnPlayer( gentity_t *mine ) {
	gentity_t	*player;

	player = mine->enemy;
	player->client->ps.eFlags &= ~EF_TICKING;

	if ( player->client->invulnerabilityTime > level.time ) {
		G_Damage( player, mine->parent, mine->parent, vec3_origin, mine->s.origin, 1000, DAMAGE_NO_KNOCKBACK, MOD_JUICED );
		player->client->invulnerabilityTime = 0;
		G_TempEntity( player->client->ps.origin, EV_JUICED );
	}
	else {
		G_SetOrigin( mine, player->s.pos.trBase );
		// make sure the explosion gets to the client
		mine->r.svFlags &= ~SVF_NOCLIENT;
		mine->splashMethodOfDeath = MOD_PROXIMITY_MINE;
		G_ExplodeMissile( mine );
	}
}

/*
================
ProximityMine_Player
================
*/
static void ProximityMine_Player( gentity_t *mine, gentity_t *player ) {
	if( mine->s.eFlags & EF_NODRAW ) {
		return;
	}

	G_AddEvent( mine, EV_PROXIMITY_MINE_STICK, 0 );

	if( player->s.eFlags & EF_TICKING ) {
		player->activator->splashDamage += mine->splashDamage;
		player->activator->splashRadius *= 1.50;
		mine->think = G_FreeEntity;
		mine->nextthink = level.time;
		return;
	}

	player->client->ps.eFlags |= EF_TICKING;
	player->activator = mine;

	mine->s.eFlags |= EF_NODRAW;
	mine->r.svFlags |= SVF_NOCLIENT;
	mine->s.pos.trType = TR_LINEAR;
	VectorClear( mine->s.pos.trDelta );

	mine->enemy = player;
	mine->think = ProximityMine_ExplodeOnPlayer;
	if ( player->client->invulnerabilityTime > level.time ) {
		mine->nextthink = level.time + 2 * 1000;
	}
	else {
		mine->nextthink = level.time + 10 * 1000;
	}
}
#endif

/*
================
G_MissileImpact
================
*/
void G_MissileImpact( gentity_t *ent, trace_t *trace ) {
	gentity_t		*other;
	qboolean		hitClient = qfalse;
#ifdef MISSIONPACK
	vec3_t			forward, impactpoint, bouncedir;
	int				eFlags;
#endif
	other = &g_entities[trace->entityNum];

// STONELANCE - support for extra bboxes
	if (other->flags & FL_EXTRA_BBOX)
		other = &g_entities[other->r.ownerNum];
// END

	// check for bounce
	if ( !other->takedamage &&
// STONELANCE
//		( ent->s.eFlags & ( EF_BOUNCE | EF_BOUNCE_HALF ) ) ) {
		( ent->s.eFlags & ( EF_BOUNCE | EF_BOUNCE_HALF | EF_BOUNCE_NONE) ) ) {
// END
		G_BounceMissile( ent, trace );
		G_AddEvent( ent, EV_GRENADE_BOUNCE, 0 );
		return;
	}
    ent->takedamage = qfalse;
    
#ifdef MISSIONPACK
	if ( other->takedamage ) {
		if ( ent->s.weapon != WP_PROX_LAUNCHER ) {
			if ( other->client && other->client->invulnerabilityTime > level.time ) {
				//
				VectorCopy( ent->s.pos.trDelta, forward );
				VectorNormalize( forward );
				if (G_InvulnerabilityEffect( other, forward, ent->s.pos.trBase, impactpoint, bouncedir )) {
					VectorCopy( bouncedir, trace->plane.normal );
					eFlags = ent->s.eFlags & EF_BOUNCE_HALF;
					ent->s.eFlags &= ~EF_BOUNCE_HALF;
					G_BounceMissile( ent, trace );
					ent->s.eFlags |= eFlags;
				}
				ent->target_ent = other;
				return;
			}
		}
	}
#endif
	// impact damage
	if (other->takedamage) {
		// FIXME: wrong damage direction?
		if ( ent->damage ) {
			vec3_t	velocity;

			if( LogAccuracyHit( other, &g_entities[ent->r.ownerNum] ) ) {
				g_entities[ent->r.ownerNum].client->accuracy_hits++;
				hitClient = qtrue;
			}
			BG_EvaluateTrajectoryDelta( &ent->s.pos, level.time, velocity );
			if ( VectorLength( velocity ) == 0 ) {
				velocity[2] = 1;	// stepped on a grenade
			}

// STONELANCE
			/*
			G_Damage (other, ent, &g_entities[ent->r.ownerNum], velocity,
				ent->s.origin, ent->damage, 
				0, ent->methodOfDeath);
			*/
			if (ent->s.weapon == RWP_MINE){
				G_Damage (other, ent, &g_entities[ent->s.otherEntityNum2], velocity,
					ent->s.origin, ent->damage, 
					DAMAGE_WEAPON, ent->methodOfDeath);
			}
			else {
				G_Damage (other, ent, &g_entities[ent->r.ownerNum], velocity,
					ent->s.origin, ent->damage, 
					DAMAGE_WEAPON, ent->methodOfDeath);
			}
// END
		}
	}

#ifdef MISSIONPACK
	if( ent->s.weapon == WP_PROX_LAUNCHER ) {
		if( ent->s.pos.trType != TR_GRAVITY ) {
			return;
		}

		// if it's a player, stick it on to them (flag them and remove this entity)
		if( other->s.eType == ET_PLAYER && other->health > 0 ) {
			ProximityMine_Player( ent, other );
			return;
		}

		SnapVectorTowards( trace->endpos, ent->s.pos.trBase );
		G_SetOrigin( ent, trace->endpos );
		ent->s.pos.trType = TR_STATIONARY;
		VectorClear( ent->s.pos.trDelta );

		G_AddEvent( ent, EV_PROXIMITY_MINE_STICK, trace->surfaceFlags );

		ent->think = ProximityMine_Activate;
		ent->nextthink = level.time + 2000;

		vectoangles( trace->plane.normal, ent->s.angles );
		ent->s.angles[0] += 90;

		// link the prox mine to the other entity
		ent->enemy = other;
		ent->die = ProximityMine_Die;
		VectorCopy(trace->plane.normal, ent->movedir);
		VectorSet(ent->r.mins, -4, -4, -4);
		VectorSet(ent->r.maxs, 4, 4, 4);
		trap_LinkEntity(ent);

		return;
	}
#endif

// STONELANCE - no more hook
/*
	if (!strcmp(ent->classname, "hook")) {
		gentity_t *nent;
		vec3_t v;

		nent = G_Spawn();
		if ( other->takedamage && other->client ) {

			G_AddEvent( nent, EV_MISSILE_HIT, DirToByte( trace->plane.normal ) );
			nent->s.otherEntityNum = other->s.number;

			ent->enemy = other;

			v[0] = other->r.currentOrigin[0] + (other->r.mins[0] + other->r.maxs[0]) * 0.5;
			v[1] = other->r.currentOrigin[1] + (other->r.mins[1] + other->r.maxs[1]) * 0.5;
			v[2] = other->r.currentOrigin[2] + (other->r.mins[2] + other->r.maxs[2]) * 0.5;

			SnapVectorTowards( v, ent->s.pos.trBase );	// save net bandwidth
		} else {
			VectorCopy(trace->endpos, v);
			G_AddEvent( nent, EV_MISSILE_MISS, DirToByte( trace->plane.normal ) );
			ent->enemy = NULL;
		}

		SnapVectorTowards( v, ent->s.pos.trBase );	// save net bandwidth

		nent->freeAfterEvent = qtrue;
		// change over to a normal entity right at the point of impact
		nent->s.eType = ET_GENERAL;
		ent->s.eType = ET_GRAPPLE;

		G_SetOrigin( ent, v );
		G_SetOrigin( nent, v );

		ent->think = Weapon_HookThink;
		ent->nextthink = level.time + FRAMETIME;

		ent->parent->client->ps.pm_flags |= PMF_GRAPPLE_PULL;
		VectorCopy( ent->r.currentOrigin, ent->parent->client->ps.grapplePoint);

		trap_LinkEntity( ent );
		trap_LinkEntity( nent );

		return;
	}
*/
// END

	// is it cheaper in bandwidth to just remove this ent and create a new
	// one, rather than changing the missile into the explosion?

	if ( other->takedamage && other->client ) {
		G_AddEvent( ent, EV_MISSILE_HIT, DirToByte( trace->plane.normal ) );
		ent->s.otherEntityNum = other->s.number;
	} else if( trace->surfaceFlags & SURF_METALSTEPS ) {
		G_AddEvent( ent, EV_MISSILE_MISS_METAL, DirToByte( trace->plane.normal ) );
	} else {
		G_AddEvent( ent, EV_MISSILE_MISS, DirToByte( trace->plane.normal ) );
	}

	ent->freeAfterEvent = qtrue;

	// change over to a normal entity right at the point of impact
	ent->s.eType = ET_GENERAL;

	SnapVectorTowards( trace->endpos, ent->s.pos.trBase );	// save net bandwidth

	G_SetOrigin( ent, trace->endpos );

	// splash damage (doesn't apply to person directly hit)
	if ( ent->splashDamage ) {
// STONELANCE
		CheckForOil(ent->r.currentOrigin, ent->splashRadius);
// END

		if( G_RadiusDamage( trace->endpos, ent->parent, ent->splashDamage, ent->splashRadius, 
			other, ent->splashMethodOfDeath ) ) {
			if( !hitClient ) {
				g_entities[ent->r.ownerNum].client->accuracy_hits++;
			}
		}
	}

    if (!strcmp(ent->classname,"fire_cluster_grenade"))
    
  {
      G_ExplodeCluster( ent );
  }

	trap_LinkEntity( ent );
}

/*
================
G_RunMissile
================
*/
void G_RunMissile( gentity_t *ent ) {
	vec3_t		origin;
	trace_t		tr;
	int			passent;

	// get current position
	BG_EvaluateTrajectory( &ent->s.pos, level.time, origin );

	// if this missile bounced off an invulnerability sphere
	if ( ent->target_ent ) {
		passent = ent->target_ent->s.number;
	}
#ifdef MISSIONPACK
	// prox mines that left the owner bbox will attach to anything, even the owner
	else if (ent->s.weapon == WP_PROX_LAUNCHER && ent->count) {
		passent = ENTITYNUM_NONE;
	}
#endif
	else {
		// ignore interactions with the missile owner
		passent = ent->r.ownerNum;
	}
	// trace a line from the previous position to the current position
	trap_Trace( &tr, ent->r.currentOrigin, ent->r.mins, ent->r.maxs, origin, passent, ent->clipmask );

	if ( tr.startsolid || tr.allsolid ) {
		// make sure the tr.entityNum is set to the entity we're stuck in
		trap_Trace( &tr, ent->r.currentOrigin, ent->r.mins, ent->r.maxs, ent->r.currentOrigin, passent, ent->clipmask );
		tr.fraction = 0;
	}
	else {
		VectorCopy( tr.endpos, ent->r.currentOrigin );
	}
	if ( ent->s.weapon == WP_ROCKET_LAUNCHER ) {
	Missile_Smooth_H(ent,origin,&tr);
	}
	trap_LinkEntity( ent );

	if ( tr.fraction != 1 ) {
		// never explode or bounce on sky
		if ( tr.surfaceFlags & SURF_NOIMPACT ) {
			// If grapple, reset owner
			if (ent->parent && ent->parent->client && ent->parent->client->hook == ent) {
				ent->parent->client->hook = NULL;
			}
			G_FreeEntity( ent );
			return;
		}
		G_MissileImpact( ent, &tr );
		if ( ent->s.eType != ET_MISSILE ) {
			return;		// exploded
		}
	}
#ifdef MISSIONPACK
	// if the prox mine wasn't yet outside the player body
	if (ent->s.weapon == WP_PROX_LAUNCHER && !ent->count) {
		// check if the prox mine is outside the owner bbox
		trap_Trace( &tr, ent->r.currentOrigin, ent->r.mins, ent->r.maxs, ent->r.currentOrigin, ENTITYNUM_NONE, ent->clipmask );
		if (!tr.startsolid || tr.entityNum != ent->r.ownerNum) {
			ent->count = 1;
		}
	}
#endif
	// check think function after bouncing
	G_RunThink( ent );
}

/*
=================
fire_plasma
=================
*/
gentity_t *fire_plasma (gentity_t *self, vec3_t start, vec3_t dir) {
	gentity_t	*bolt;

	VectorNormalize (dir);

	bolt = G_Spawn();
	bolt->classname = "plasma";
	bolt->nextthink = level.time + 10000;
	bolt->think = G_ExplodeMissile;
	bolt->s.eType = ET_MISSILE;
	bolt->r.svFlags = SVF_USE_CURRENT_ORIGIN;
	bolt->s.weapon = WP_PLASMAGUN;
	bolt->r.ownerNum = self->s.number;
	bolt->parent = self;
	bolt->damage = 20;
	bolt->splashDamage = 15;
	bolt->splashRadius = 20;
	bolt->methodOfDeath = MOD_PLASMA;
	bolt->splashMethodOfDeath = MOD_PLASMA_SPLASH;
	bolt->clipmask = MASK_SHOT;
	bolt->target_ent = NULL;

	bolt->s.pos.trType = TR_LINEAR;
	bolt->s.pos.trTime = level.time - MISSILE_PRESTEP_TIME;		// move a bit on the very first frame
	VectorCopy( start, bolt->s.pos.trBase );
// STONELANCE
//	VectorScale( dir, 2000, bolt->s.pos.trDelta );
	VectorScale( dir, 4000, bolt->s.pos.trDelta );
// END
	SnapVector( bolt->s.pos.trDelta );			// save net bandwidth

	VectorCopy (start, bolt->r.currentOrigin);

	return bolt;
}	

//=============================================================================
//fire_plasma_bounce
//=============================================================================


gentity_t *fire_plasma_bounce (gentity_t *self, vec3_t start, vec3_t dir) {
	gentity_t	*bolt;

	VectorNormalize (dir);

	bolt = G_Spawn();
	bolt->classname = "plasma";
	bolt->nextthink = level.time + 10000;
	bolt->think = G_ExplodeMissile;
	bolt->s.eType = ET_MISSILE;
	bolt->r.svFlags = SVF_USE_CURRENT_ORIGIN;
	bolt->s.weapon = WP_PLASMAGUN;
	bolt->r.ownerNum = self->s.number;
	bolt->parent = self;
	bolt->damage = 20;
	bolt->splashDamage = 15;
	bolt->splashRadius = 20;
	bolt->methodOfDeath = MOD_PLASMA;
	bolt->splashMethodOfDeath = MOD_PLASMA_SPLASH;
	bolt->clipmask = MASK_SHOT;
	bolt->target_ent = NULL;
	bolt->s.eFlags = EF_BOUNCE;

	bolt->s.pos.trType = TR_LINEAR;
	bolt->s.pos.trTime = level.time - MISSILE_PRESTEP_TIME;		// move a bit on the very first frame
	VectorCopy( start, bolt->s.pos.trBase );
	VectorScale( dir, 2000, bolt->s.pos.trDelta );
	SnapVector( bolt->s.pos.trDelta );			// save net bandwidth

	VectorCopy (start, bolt->r.currentOrigin);

	return bolt;
}

/*
=================
fire_cluster_grenade
=================
*/
gentity_t *fire_cluster_grenade (gentity_t *self, vec3_t start, vec3_t dir) {
	gentity_t	*bolt;

	VectorNormalize (dir);

	bolt = G_Spawn();
	bolt->classname = "fire_cluster_grenade";
	bolt->nextthink = level.time + 500;
	bolt->think = G_ExplodeMissile;
	bolt->s.eType = ET_MISSILE;
	bolt->r.svFlags = SVF_USE_CURRENT_ORIGIN;
	bolt->s.weapon = WP_GRENADE_LAUNCHER;
	bolt->s.eFlags = EF_BOUNCE_HALF;
	bolt->r.ownerNum = self->s.number;
	bolt->parent = self;
	//bolt->damage = 100; //TBB - too high for short reload
	bolt->damage = 40;	//TBB
	//bolt->splashDamage = 100; //TBB - too high for short reload
	bolt->splashDamage = 20; //TBB
	bolt->splashRadius = 150;
	bolt->methodOfDeath = MOD_GRENADE;
	bolt->splashMethodOfDeath = MOD_GRENADE_SPLASH;
	bolt->clipmask = MASK_SHOT;
	bolt->target_ent = NULL;

	bolt->s.pos.trType = TR_GRAVITY;
	bolt->s.pos.trTime = level.time - MISSILE_PRESTEP_TIME;		// move a bit on the very first frame
	VectorCopy( start, bolt->s.pos.trBase );
	VectorScale( dir, 1200, bolt->s.pos.trDelta ); //TBB - speed is 2000 in g_weapon.c
	SnapVector( bolt->s.pos.trDelta );			// save net bandwidth

	VectorCopy (start, bolt->r.currentOrigin);

	return bolt;
}

/*
======================
fire_cluster_grenade2
======================
*/
gentity_t *fire_cluster_grenade2 (gentity_t *self, vec3_t start, vec3_t dir) {
	gentity_t	*bolt;

	VectorNormalize (dir);

	bolt = G_Spawn();
	bolt->classname = "grenade";
	//bolt->nextthink = level.time + 200;
	bolt->nextthink = level.time + 1200;
	bolt->think = G_ExplodeMissile;
	bolt->s.eType = ET_MISSILE;
	bolt->r.svFlags = SVF_USE_CURRENT_ORIGIN;
	bolt->s.weapon = WP_GRENADE_LAUNCHER;
	//bolt->s.eFlags = EF_BOUNCE_HALF;
	bolt->s.eFlags = EF_BOUNCE_NONE;
	bolt->r.ownerNum = self->s.number;
	bolt->parent = self;
	//bolt->damage = 100; //TBB - too high for short reload
	bolt->damage = 80;
	//bolt->splashDamage = 80; //TBB - too high
	bolt->splashDamage = 60; //TBB
	bolt->splashRadius = 150;
	bolt->methodOfDeath = MOD_GRENADE;
	bolt->splashMethodOfDeath = MOD_GRENADE_SPLASH;
	bolt->clipmask = MASK_SHOT;
	bolt->target_ent = NULL;

	bolt->s.pos.trType = TR_GRAVITY;
	bolt->s.pos.trTime = level.time - MISSILE_PRESTEP_TIME;		// move a bit on the very first frame
	VectorCopy( start, bolt->s.pos.trBase );
	VectorScale( dir, 600, bolt->s.pos.trDelta );
	SnapVector( bolt->s.pos.trDelta );			// save net bandwidth

	VectorCopy (start, bolt->r.currentOrigin);

	return bolt;
}

/*
=================
fire_grenade
=================
*/
gentity_t *fire_grenade (gentity_t *self, vec3_t start, vec3_t dir) {
	gentity_t	*bolt;

	VectorNormalize (dir);

	bolt = G_Spawn();
	bolt->classname = "grenade";
	bolt->nextthink = level.time + 2500;
	bolt->think = G_ExplodeMissile;
	bolt->s.eType = ET_MISSILE;
	bolt->r.svFlags = SVF_USE_CURRENT_ORIGIN;
	bolt->s.weapon = WP_GRENADE_LAUNCHER;
	bolt->s.eFlags = EF_BOUNCE_HALF;
	bolt->r.ownerNum = self->s.number;
	bolt->parent = self;
	bolt->damage = 40;
	bolt->splashDamage = 20;
	bolt->splashRadius = 150;
	bolt->methodOfDeath = MOD_GRENADE;
	bolt->splashMethodOfDeath = MOD_GRENADE_SPLASH;
	bolt->clipmask = MASK_SHOT;
	bolt->target_ent = NULL;

	bolt->s.pos.trType = TR_GRAVITY;
	bolt->s.pos.trTime = level.time - MISSILE_PRESTEP_TIME;		// move a bit on the very first frame
	VectorCopy( start, bolt->s.pos.trBase );
	VectorScale( dir, 800, bolt->s.pos.trDelta );
	SnapVector( bolt->s.pos.trDelta );			// save net bandwidth

	VectorCopy (start, bolt->r.currentOrigin);

	return bolt;
}



//=============================================================================


/*
=================
fire_bfg
=================
*/
gentity_t *fire_bfg (gentity_t *self, vec3_t start, vec3_t dir) {
	gentity_t	*bolt;

	VectorNormalize (dir);

	bolt = G_Spawn();
	bolt->classname = "bfg";
	bolt->nextthink = level.time + 10000;
	bolt->think = G_ExplodeMissile;
	bolt->s.eType = ET_MISSILE;
	bolt->r.svFlags = SVF_USE_CURRENT_ORIGIN;
	bolt->s.weapon = WP_BFG;
	bolt->r.ownerNum = self->s.number;
	bolt->parent = self;
	bolt->damage = 100;
	bolt->splashDamage = 100;
	bolt->splashRadius = 120;
	bolt->methodOfDeath = MOD_BFG;
	bolt->splashMethodOfDeath = MOD_BFG_SPLASH;
	bolt->clipmask = MASK_SHOT;
	bolt->target_ent = NULL;

	bolt->s.pos.trType = TR_LINEAR;
	bolt->s.pos.trTime = level.time - MISSILE_PRESTEP_TIME;		// move a bit on the very first frame
	VectorCopy( start, bolt->s.pos.trBase );
// STONELANCE
//	VectorScale( dir, 2000, bolt->s.pos.trDelta );
	VectorScale( dir, 4000, bolt->s.pos.trDelta );
// END
	SnapVector( bolt->s.pos.trDelta );			// save net bandwidth
	VectorCopy (start, bolt->r.currentOrigin);

	return bolt;
}

//=============================================================================




/*
=================
fire_rocket
=================
*/
gentity_t *fire_rocket (gentity_t *self, vec3_t start, vec3_t dir) {
	gentity_t	*bolt;

	VectorNormalize (dir);

	bolt = G_Spawn();
	bolt->classname = "rocket";
	bolt->nextthink = level.time + 15000;
	bolt->think = G_ExplodeMissile;
	bolt->s.eType = ET_MISSILE;
	bolt->r.svFlags = SVF_USE_CURRENT_ORIGIN;
	bolt->s.weapon = WP_ROCKET_LAUNCHER;
	bolt->r.ownerNum = self->s.number;
	bolt->parent = self;
	bolt->damage = 80;
	bolt->splashDamage = 60;
	bolt->splashRadius = 120;
	bolt->methodOfDeath = MOD_ROCKET;
	bolt->splashMethodOfDeath = MOD_ROCKET_SPLASH;
	bolt->clipmask = MASK_SHOT;
	bolt->target_ent = NULL;
	bolt->s.pos.trType = TR_LINEAR;
	bolt->s.pos.trTime = level.time - MISSILE_PRESTEP_TIME;		// move a bit on the very first frame
	VectorCopy( start, bolt->s.pos.trBase );
	VectorScale( dir, 1400, bolt->s.pos.trDelta );
	SnapVector( bolt->s.pos.trDelta );			// save net bandwidth
	VectorCopy (start, bolt->r.currentOrigin);

	return bolt;
}

/*
================
G_HomingMissile
================
*/

#define ROCKET_SPEED   650

void rocket_think( gentity_t *ent )
{
    gentity_t   *target = NULL;
    gentity_t   *rad = NULL;
    vec3_t dir, dir2, raddir, start;
    
    while ((rad = findradius(rad, ent->r.currentOrigin, 1000)) != NULL)
    {
        if (!rad->client)
            continue;
        if (rad == ent->parent)
            continue;
        if (rad->health <= 0)
            continue;
        if (rad->client->sess.sessionTeam == TEAM_SPECTATOR)
            continue;
        if ( (g_gametype.integer == GT_TEAM || g_gametype.integer == GT_CTF || g_gametype.integer == GT_DOMINATION ) && rad->client->sess.sessionTeam == rad->parent->client->sess.sessionTeam)
            continue;
        if (!visible (ent, rad))
            continue;
            
        VectorSubtract(rad->r.currentOrigin, ent->r.currentOrigin, raddir);
        raddir[2] += 16;
        if ((target == NULL) || (VectorLength(raddir) < VectorLength(dir)))
        {
            target = rad;
            VectorCopy(raddir, dir);
        }
    }
    
    if (target != NULL)
    {
        VectorCopy( ent->r.currentOrigin, start );
        VectorCopy( ent->r.currentAngles, dir2 );
        VectorNormalize(dir);
        VectorScale(dir, 0.2, dir);
        VectorAdd(dir, dir2, dir);
        VectorNormalize(dir);
        VectorCopy( start, ent->s.pos.trBase );
        VectorScale( dir, 650, ent->s.pos.trDelta );
        SnapVector( ent->s.pos.trDelta );
        VectorCopy (start, ent->r.currentOrigin);
        VectorCopy (dir, ent->r.currentAngles);
    }
    ent->nextthink = level.time + 100;
}

/*
=================
fire_homing_rocket
=================
*/
gentity_t *fire_homing_rocket (gentity_t *self, vec3_t start, vec3_t dir) {
	gentity_t	*bolt;

	VectorNormalize (dir);

	bolt = G_Spawn();
	bolt->classname = "rocket";
	bolt->nextthink = level.time + 1;
	bolt->think = rocket_think;
    bolt->health = 5;
    bolt->takedamage = qtrue;
    bolt->die = G_MissileDie;
    bolt->r.contents = CONTENTS_BODY;
    VectorSet(bolt->r.mins, -10, -3, 0);
    VectorCopy(bolt->r.mins, bolt->r.absmin);
    VectorSet(bolt->r.maxs, 10, 3, 6);
    VectorCopy(bolt->r.maxs, bolt->r.absmax);
	bolt->s.eType = ET_MISSILE;
	bolt->r.svFlags = SVF_USE_CURRENT_ORIGIN;
	bolt->s.weapon = WP_ROCKET_LAUNCHER;
	bolt->r.ownerNum = self->s.number;
	bolt->parent = self;
	bolt->damage = 40;
	bolt->splashDamage = 60;
	bolt->splashRadius = 75;
	bolt->methodOfDeath = MOD_ROCKET;
	bolt->splashMethodOfDeath = MOD_ROCKET_SPLASH;
	bolt->clipmask = MASK_SHOT;
	bolt->target_ent = NULL;
	bolt->s.pos.trType = TR_LINEAR;
	bolt->s.pos.trTime = level.time - MISSILE_PRESTEP_TIME;		// move a bit on the very first frame
	VectorCopy( start, bolt->s.pos.trBase );
	VectorScale( dir, ROCKET_SPEED, bolt->s.pos.trDelta );
	SnapVector( bolt->s.pos.trDelta );			// save net bandwidth
	VectorCopy (start, bolt->r.currentOrigin);

	return bolt;
}

//=====================================
// fire mine
//=====================================


gentity_t *fire_mine( gentity_t *self, vec3_t start, vec3_t dir){
	gentity_t	*bolt;

	VectorNormalize (dir);

	bolt = G_Spawn();
	bolt->classname = "mine";
	bolt->nextthink = level.time + 7500;
	bolt->think = G_ExplodeMissile;
	bolt->s.eType = ET_MISSILE;
	bolt->r.svFlags = SVF_USE_CURRENT_ORIGIN;
	bolt->s.weapon = RWP_MINE;
	bolt->s.eFlags = EF_BOUNCE_NONE;
//	bolt->r.ownerNum = self->s.number;
	bolt->s.otherEntityNum2 = self->s.number; // want to be able to run over your own mines
	bolt->parent = self;
	bolt->damage = 100;
	bolt->splashDamage = 100;
	bolt->splashRadius = 150;
	bolt->methodOfDeath = MOD_MINE;
	bolt->splashMethodOfDeath = MOD_MINE_SPLASH;
//	bolt->clipmask = MASK_SHOT;
	bolt->clipmask = CONTENTS_SOLID; // dont activate until it stops moving

//	bolt->mass = 2;

	bolt->s.pos.trType = TR_GRAVITY;
	bolt->s.pos.trTime = level.time - MISSILE_PRESTEP_TIME;		// move a bit on the very first frame
	VectorCopy( start, bolt->s.pos.trBase );
	VectorMA( self->client->ps.velocity, 100, dir, bolt->s.pos.trDelta );
	VectorScale(bolt->s.pos.trDelta, 0.4f, bolt->s.pos.trDelta);

//	VectorAdd( self->client->ps.velocity, bolt->s.pos.trDelta, bolt->s.pos.trDelta );

	SnapVector( bolt->s.pos.trDelta );			// save net bandwidth

	VectorCopy (start, bolt->r.currentOrigin);

	return bolt;
}
// END


#ifdef MISSIONPACK
/*
=================
fire_nail
=================
*/
#define NAILGUN_SPREAD	500

gentity_t *fire_nail( gentity_t *self, vec3_t start, vec3_t forward, vec3_t right, vec3_t up ) {
	gentity_t	*bolt;
	vec3_t		dir;
	vec3_t		end;
	float		r, u, scale;

	bolt = G_Spawn();
	bolt->classname = "nail";
	bolt->nextthink = level.time + 10000;
	bolt->think = G_ExplodeMissile;
	bolt->s.eType = ET_MISSILE;
	bolt->r.svFlags = SVF_USE_CURRENT_ORIGIN;
	bolt->s.weapon = WP_NAILGUN;
	bolt->r.ownerNum = self->s.number;
	bolt->parent = self;
	bolt->damage = 20;
	bolt->methodOfDeath = MOD_NAIL;
	bolt->clipmask = MASK_SHOT;
	bolt->target_ent = NULL;

	bolt->s.pos.trType = TR_LINEAR;
	bolt->s.pos.trTime = level.time;
	VectorCopy( start, bolt->s.pos.trBase );

	r = random() * M_PI * 2.0f;
	u = sin(r) * crandom() * NAILGUN_SPREAD * 16;
	r = cos(r) * crandom() * NAILGUN_SPREAD * 16;
	VectorMA( start, 8192 * 16, forward, end);
	VectorMA (end, r, right, end);
	VectorMA (end, u, up, end);
	VectorSubtract( end, start, dir );
	VectorNormalize( dir );

	scale = 555 + random() * 1800;
	VectorScale( dir, scale, bolt->s.pos.trDelta );
	SnapVector( bolt->s.pos.trDelta );

	VectorCopy( start, bolt->r.currentOrigin );

	return bolt;
}	


/*
=================
fire_prox
=================
*/
gentity_t *fire_prox( gentity_t *self, vec3_t start, vec3_t dir ) {
	gentity_t	*bolt;

	VectorNormalize (dir);

	bolt = G_Spawn();
	bolt->classname = "prox mine";
	bolt->nextthink = level.time + 3000;
	bolt->think = G_ExplodeMissile;
	bolt->s.eType = ET_MISSILE;
	bolt->r.svFlags = SVF_USE_CURRENT_ORIGIN;
	bolt->s.weapon = WP_PROX_LAUNCHER;
	bolt->s.eFlags = 0;
	bolt->r.ownerNum = self->s.number;
	bolt->parent = self;
	bolt->damage = 0;
	bolt->splashDamage = 100;
	bolt->splashRadius = 150;
	bolt->methodOfDeath = MOD_PROXIMITY_MINE;
	bolt->splashMethodOfDeath = MOD_PROXIMITY_MINE;
	bolt->clipmask = MASK_SHOT;
	bolt->target_ent = NULL;
	// count is used to check if the prox mine left the player bbox
	// if count == 1 then the prox mine left the player bbox and can attack to it
	bolt->count = 0;

	//FIXME: we prolly wanna abuse another field
	bolt->s.generic1 = self->client->sess.sessionTeam;

	bolt->s.pos.trType = TR_GRAVITY;
	bolt->s.pos.trTime = level.time - MISSILE_PRESTEP_TIME;		// move a bit on the very first frame
	VectorCopy( start, bolt->s.pos.trBase );
	VectorScale( dir, 700, bolt->s.pos.trDelta );
	SnapVector( bolt->s.pos.trDelta );			// save net bandwidth

	VectorCopy (start, bolt->r.currentOrigin);

	return bolt;
}
#endif