/*
* Copyright(c) 1997-2001 Id Software, Inc.
* Copyright(c) 2002 The Quakeforge Project.
* Copyright(c) 2006 Quetoo.
*
* 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"

/*QUAKED target_temp_entity(1 0 0)(-8 -8 -8)(8 8 8)
Fire an origin based temp entity event to the clients.
"style"		type byte
*/
void Use_Target_Tent(edict_t *ent, edict_t *other, edict_t *activator){
	gi.WriteByte(svc_temp_entity);
	gi.WriteByte(ent->style);
	gi.WritePosition(ent->s.origin);
	gi.multicast(ent->s.origin, MULTICAST_PVS);
}

void SP_target_temp_entity(edict_t *ent){
	ent->use = Use_Target_Tent;
}




/*QUAKED target_speaker(1 0 0)(-8 -8 -8)(8 8 8) looped-on looped-off reliable
"noise"		wav file to play
"attenuation"
-1 = none, send to whole level
1 = normal fighting sounds
2 = idle sound level
3 = ambient sound level
"volume"	0.0 to 1.0
 
Normal sounds play each time the target is used.  The reliable flag can be set for crucial voiceovers.
 
Looped sounds are always atten 3 / vol 1, and the use function toggles it on/off.
Multiple identical looping sounds will just increase volume without any speed cost.
*/
void Use_Target_Speaker(edict_t *ent, edict_t *other, edict_t *activator){
	int chan;
	
	if(ent->spawnflags & 3){  // looping sound toggles
		if(ent->s.sound)
			ent->s.sound = 0;  // turn it off
		else
			ent->s.sound = ent->noise_index;  // start it
	} else {  // normal sound
		if(ent->spawnflags & 4)
			chan = CHAN_VOICE | CHAN_RELIABLE;
		else
			chan = CHAN_VOICE;
	// use a positioned_sound, because this entity won't normally be
	// sent to any clients because it is invisible
		gi.positioned_sound(ent->s.origin, ent, chan, ent->noise_index, ent->volume, ent->attenuation, 0);
	}
}

void SP_target_speaker(edict_t *ent){
	char buffer[MAX_QPATH];
	
	if(!st.noise){
		gi.dprintf("target_speaker with no noise set at %s\n", vtos(ent->s.origin));
		return;
	}
	if(!strstr(st.noise, ".wav"))
		Com_sprintf(buffer, sizeof(buffer), "%s.wav", st.noise);
	else
		strncpy(buffer, st.noise, sizeof(buffer));
	ent->noise_index = gi.soundindex(buffer);
	
	if(!ent->volume)
		ent->volume = 1.0;
		
	if(!ent->attenuation)
		ent->attenuation = 1.0;
	else if(ent->attenuation == -1)  // use -1 so 0 defaults to 1
		ent->attenuation = 0;
		
	// check for prestarted looping sound
	if(ent->spawnflags & 1)
		ent->s.sound = ent->noise_index;
		
	ent->use = Use_Target_Speaker;
	
	// must link the entity so we get areas and clusters so
	// the server can determine who to send updates to
	gi.linkentity(ent);
}



void Use_Target_Help(edict_t *ent, edict_t *other, edict_t *activator){
	if(ent->spawnflags & 1)
		strncpy(game.helpmessage1, ent->message, sizeof(game.helpmessage2) - 1);
	else
		strncpy(game.helpmessage2, ent->message, sizeof(game.helpmessage1) - 1);
		
	game.helpchanged++;
}

/*QUAKED target_help(1 0 1)(-16 -16 -24)(16 16 24) help1
When fired, the "message" key becomes the current personal computer string, and the message light will be set on all clients status bars.
*/
void SP_target_help(edict_t *ent){
	if(deathmatch->value){  // auto-remove for deathmatch
		G_FreeEdict(ent);
		return;
	}
	
	if(!ent->message){
		gi.dprintf("%s with no message at %s\n", ent->classname, vtos(ent->s.origin));
		G_FreeEdict(ent);
		return;
	}
	ent->use = Use_Target_Help;
}


/*QUAKED target_secret(1 0 1)(-8 -8 -8)(8 8 8)
Counts a secret found.
These are single use targets.
*/
void use_target_secret(edict_t *ent, edict_t *other, edict_t *activator){
	gi.sound(ent, CHAN_VOICE, ent->noise_index, 1, ATTN_NORM, 0);
	
	level.found_secrets++;
	
	G_UseTargets(ent, activator);
	G_FreeEdict(ent);
}

void SP_target_secret(edict_t *ent){
	if(deathmatch->value){  // auto-remove for deathmatch
		G_FreeEdict(ent);
		return;
	}
	
	ent->use = use_target_secret;
	if(!st.noise)
		st.noise = "misc/secret.wav";
	ent->noise_index = gi.soundindex(st.noise);
	ent->svflags = SVF_NOCLIENT;
	level.total_secrets++;
	// map bug hack
	if(!Q_stricmp(level.mapname, "mine3") && ent->s.origin[0] == 280 && ent->s.origin[1] == -2048 && ent->s.origin[2] == -624)
		ent->message = "You have found a secret area.";
}


/*QUAKED target_goal(1 0 1)(-8 -8 -8)(8 8 8)
Counts a goal completed.
These are single use targets.
*/
void use_target_goal(edict_t *ent, edict_t *other, edict_t *activator){
	gi.sound(ent, CHAN_VOICE, ent->noise_index, 1, ATTN_NORM, 0);
	
	level.found_goals++;
	
	if(level.found_goals == level.total_goals)
		gi.configstring(CS_CDTRACK, "0");
		
	G_UseTargets(ent, activator);
	G_FreeEdict(ent);
}

void SP_target_goal(edict_t *ent){
	if(deathmatch->value){  // auto-remove for deathmatch
		G_FreeEdict(ent);
		return;
	}
	
	ent->use = use_target_goal;
	if(!st.noise)
		st.noise = "misc/secret.wav";
	ent->noise_index = gi.soundindex(st.noise);
	ent->svflags = SVF_NOCLIENT;
	level.total_goals++;
}



/*QUAKED target_explosion(1 0 0)(-8 -8 -8)(8 8 8)
Spawns an explosion temporary entity when used.
 
"delay"		wait this long before going off
"dmg"		how much radius damage should be done, defaults to 0
*/
void target_explosion_explode(edict_t *self){
	float save;
	
	gi.WriteByte(svc_temp_entity);
	gi.WriteByte(TE_EXPLOSION1);
	gi.WritePosition(self->s.origin);
	gi.multicast(self->s.origin, MULTICAST_PHS);
	
	T_RadiusDamage(self, self->activator, self->dmg, NULL, self->dmg + 40, MOD_EXPLOSIVE);
	
	save = self->delay;
	self->delay = 0;
	G_UseTargets(self, self->activator);
	self->delay = save;
}

void use_target_explosion(edict_t *self, edict_t *other, edict_t *activator){
	self->activator = activator;
	
	if(!self->delay){
		target_explosion_explode(self);
		return;
	}
	
	self->think = target_explosion_explode;
	self->nextthink = level.time + self->delay;
}

void SP_target_explosion(edict_t *ent){
	ent->use = use_target_explosion;
	ent->svflags = SVF_NOCLIENT;
}



/*QUAKED target_changelevel(1 0 0)(-8 -8 -8)(8 8 8)
Changes level to "map" when fired
*/
void use_target_changelevel(edict_t *self, edict_t *other, edict_t *activator){
	if(level.intermissiontime)
		return;  // already activated
		
	if(!deathmatch->value && !coop->value){
		if(g_edicts[1].health <= 0)
			return;
	}
	
	// if noexit, do a ton of damage to other
	if(deathmatch->value && !((int)dmflags->value & DF_ALLOW_EXIT) && other != world){
		T_Damage(other, self, self, vec3_origin, other->s.origin, vec3_origin, 10 * other->max_health, 1000, 0, MOD_EXIT);
		return;
	}
	
	// if multiplayer, let everyone know who hit the exit
	if(deathmatch->value){
		if(activator && activator->client)
			gi.bprintf(PRINT_HIGH, "%s exited the level.\n", activator->client->pers.netname);
	}
	
	// if going to a new unit, clear cross triggers
	if(strstr(self->map, "*"))
		game.serverflags &= ~(SFL_CROSS_TRIGGER_MASK);
		
	BeginIntermission(self);
}

void SP_target_changelevel(edict_t *ent){
	if(!ent->map){
		gi.dprintf("target_changelevel with no map at %s\n", vtos(ent->s.origin));
		G_FreeEdict(ent);
		return;
	}
	
	// ugly hack because *SOMEBODY* screwed up their map
	if((Q_stricmp(level.mapname, "fact1") == 0) &&(Q_stricmp(ent->map, "fact3") == 0))
		ent->map = "fact3$secret1";
		
	ent->use = use_target_changelevel;
	ent->svflags = SVF_NOCLIENT;
}



/*QUAKED target_splash(1 0 0)(-8 -8 -8)(8 8 8)
Creates a particle splash effect when used.
 
Set "sounds" to one of the following:
  1) sparks
  2) blue water
  3) brown water
  4) slime
  5) lava
  6) blood
 
"count"	how many pixels in the splash
"dmg"	if set, does a radius damage at this location when it splashes
		useful for lava/sparks
*/

void use_target_splash(edict_t *self, edict_t *other, edict_t *activator){
	gi.WriteByte(svc_temp_entity);
	gi.WriteByte(TE_SPLASH);
	gi.WriteByte(self->count);
	gi.WritePosition(self->s.origin);
	gi.WriteDir(self->movedir);
	gi.WriteByte(self->sounds);
	gi.multicast(self->s.origin, MULTICAST_PVS);
	
	if(self->dmg)
		T_RadiusDamage(self, activator, self->dmg, NULL, self->dmg + 40, MOD_SPLASH);
}

void SP_target_splash(edict_t *self){
	self->use = use_target_splash;
	G_SetMovedir(self->s.angles, self->movedir);
	
	if(!self->count)
		self->count = 32;
		
	self->svflags = SVF_NOCLIENT;
}



/*QUAKED target_spawner(1 0 0)(-8 -8 -8)(8 8 8)
Set target to the type of entity you want spawned.
Useful for spawning monsters and gibs in the factory levels.
 
For monsters:
	Set direction to the facing you want it to have.
 
For gibs:
	Set direction if you want it moving and
	speed how fast it should be moving otherwise it
	will just be dropped
*/
void ED_CallSpawn(edict_t *ent);

void use_target_spawner(edict_t *self, edict_t *other, edict_t *activator){
	edict_t *ent;
	
	ent = G_Spawn();
	ent->classname = self->target;
	VectorCopy(self->s.origin, ent->s.origin);
	VectorCopy(self->s.angles, ent->s.angles);
	ED_CallSpawn(ent);
	gi.unlinkentity(ent);
	KillBox(ent);
	gi.linkentity(ent);
	if(self->speed)
		VectorCopy(self->movedir, ent->velocity);
}

void SP_target_spawner(edict_t *self){
	self->use = use_target_spawner;
	self->svflags = SVF_NOCLIENT;
	if(self->speed){
		G_SetMovedir(self->s.angles, self->movedir);
		VectorScale(self->movedir, self->speed, self->movedir);
	}
}


/*QUAKED target_blaster(1 0 0)(-8 -8 -8)(8 8 8) NOTRAIL NOEFFECTS
Fires a blaster bolt in the set direction when triggered.
 
dmg		default is 15
speed	default is 1000
*/

void use_target_blaster(edict_t *self, edict_t *other, edict_t *activator){
	int effect;
	
	if(self->spawnflags & 2)
		effect = 0;
	else if(self->spawnflags & 1)
		effect = EF_HYPERBLASTER;
	else
		effect = EF_BLASTER;
		
	fire_blaster(self, self->s.origin, self->movedir, self->dmg, self->speed, EF_BLASTER, MOD_TARGET_BLASTER);
	gi.sound(self, CHAN_VOICE, self->noise_index, 1, ATTN_NORM, 0);
}

void SP_target_blaster(edict_t *self){
	self->use = use_target_blaster;
	G_SetMovedir(self->s.angles, self->movedir);
	self->noise_index = gi.soundindex("weapons/laser2.wav");
	
	if(!self->dmg)
		self->dmg = 15;
	if(!self->speed)
		self->speed = 1000;
		
	self->svflags = SVF_NOCLIENT;
}



/*QUAKED target_crosslevel_trigger(.5 .5 .5)(-8 -8 -8)(8 8 8) trigger1 trigger2 trigger3 trigger4 trigger5 trigger6 trigger7 trigger8
Once this trigger is touched/used, any trigger_crosslevel_target with the same trigger number is automatically used when a level is started within the same unit.  It is OK to check multiple triggers.  Message, delay, target, and killtarget also work.
*/
void trigger_crosslevel_trigger_use(edict_t *self, edict_t *other, edict_t *activator){
	game.serverflags |= self->spawnflags;
	G_FreeEdict(self);
}

void SP_target_crosslevel_trigger(edict_t *self){
	self->svflags = SVF_NOCLIENT;
	self->use = trigger_crosslevel_trigger_use;
}

/*QUAKED target_crosslevel_target(.5 .5 .5)(-8 -8 -8)(8 8 8) trigger1 trigger2 trigger3 trigger4 trigger5 trigger6 trigger7 trigger8
Triggered by a trigger_crosslevel elsewhere within a unit.  If multiple triggers are checked, all must be true.  Delay, target and
killtarget also work.
 
"delay"		delay before using targets if the trigger has been activated(default 1)
*/
void target_crosslevel_target_think(edict_t *self){
	if(self->spawnflags ==(game.serverflags & SFL_CROSS_TRIGGER_MASK & self->spawnflags)){
		G_UseTargets(self, self);
		G_FreeEdict(self);
	}
}

void SP_target_crosslevel_target(edict_t *self){
	if(! self->delay)
		self->delay = 1;
	self->svflags = SVF_NOCLIENT;
	
	self->think = target_crosslevel_target_think;
	self->nextthink = level.time + self->delay;
}


/*QUAKED target_laser(0 .5 .8)(-8 -8 -8)(8 8 8) START_ON RED GREEN BLUE YELLOW ORANGE FAT
When triggered, fires a laser.  You can either set a target
or a direction.
*/

void target_laser_think(edict_t *self){
	edict_t *ignore;
	vec3_t start;
	vec3_t end;
	trace_t tr;
	vec3_t point;
	vec3_t last_movedir;
	int count;
	
	if(self->spawnflags & 0x80000000)
		count = 8;
	else
		count = 4;
		
	if(self->enemy){
		VectorCopy(self->movedir, last_movedir);
		VectorMA(self->enemy->absmin, 0.5, self->enemy->size, point);
		VectorSubtract(point, self->s.origin, self->movedir);
		VectorNormalize(self->movedir);
		if(!VectorCompare(self->movedir, last_movedir))
			self->spawnflags |= 0x80000000;
	}
	
	ignore = self;
	VectorCopy(self->s.origin, start);
	VectorMA(start, 2048, self->movedir, end);
	while(1){
		tr = gi.trace(start, NULL, NULL, end, ignore, CONTENTS_SOLID | CONTENTS_MONSTER | CONTENTS_DEADMONSTER);
		
		if(!tr.ent)
			break;
			
	// hurt it if we can
		if((tr.ent->takedamage) && !(tr.ent->flags & FL_IMMUNE_LASER))
			T_Damage(tr.ent, self, self->activator, self->movedir, tr.endpos, vec3_origin, self->dmg, 1, DAMAGE_ENERGY, MOD_TARGET_LASER);
			
	// if we hit something that's not a monster or player or is immune to lasers, we're done
		if(!(tr.ent->svflags & SVF_MONSTER) &&(!tr.ent->client)){
			if(self->spawnflags & 0x80000000){
				self->spawnflags &= ~0x80000000;
				gi.WriteByte(svc_temp_entity);
				gi.WriteByte(TE_LASER_SPARKS);
				gi.WriteByte(count);
				gi.WritePosition(tr.endpos);
				gi.WriteDir(tr.plane.normal);
				gi.WriteByte(self->s.skinnum);
				gi.multicast(tr.endpos, MULTICAST_PVS);
			}
			break;
		}
		
		ignore = tr.ent;
		VectorCopy(tr.endpos, start);
	}
	
	VectorCopy(tr.endpos, self->s.old_origin);
	
	self->nextthink = level.time + FRAMETIME;
}

void target_laser_on(edict_t *self){
	if(!self->activator)
		self->activator = self;
	self->spawnflags |= 0x80000001;
	self->svflags &= ~SVF_NOCLIENT;
	target_laser_think(self);
}

void target_laser_off(edict_t *self){
	self->spawnflags &= ~1;
	self->svflags |= SVF_NOCLIENT;
	self->nextthink = 0;
}

void target_laser_use(edict_t *self, edict_t *other, edict_t *activator){
	self->activator = activator;
	if(self->spawnflags & 1)
		target_laser_off(self);
	else
		target_laser_on(self);
}

void target_laser_start(edict_t *self){
	edict_t *ent;
	
	self->movetype = MOVETYPE_NONE;
	self->solid = SOLID_NOT;
	self->s.renderfx |= RF_BEAM | RF_TRANSLUCENT;
	self->s.modelindex = 1;  // must be non-zero
	
	// set the beam diameter
	if(self->spawnflags & 64)
		self->s.frame = 16;
	else
		self->s.frame = 4;
		
	// set the color
	if(self->spawnflags & 2)
		self->s.skinnum = 0xf2f2f0f0;
	else if(self->spawnflags & 4)
		self->s.skinnum = 0xd0d1d2d3;
	else if(self->spawnflags & 8)
		self->s.skinnum = 0xf3f3f1f1;
	else if(self->spawnflags & 16)
		self->s.skinnum = 0xdcdddedf;
	else if(self->spawnflags & 32)
		self->s.skinnum = 0xe0e1e2e3;
		
	if(!self->enemy){
		if(self->target){
			ent = G_Find(NULL, FOFS(targetname), self->target);
			if(!ent)
				gi.dprintf("%s at %s: %s is a bad target\n", self->classname, vtos(self->s.origin), self->target);
			self->enemy = ent;
		} else {
			G_SetMovedir(self->s.angles, self->movedir);
		}
	}
	self->use = target_laser_use;
	self->think = target_laser_think;
	
	if(!self->dmg)
		self->dmg = 1;
		
	VectorSet(self->mins, -8, -8, -8);
	VectorSet(self->maxs, 8, 8, 8);
	gi.linkentity(self);
	
	if(self->spawnflags & 1)
		target_laser_on(self);
	else
		target_laser_off(self);
}

void SP_target_laser(edict_t *self){
	// let everything else get spawned before we start firing
	self->think = target_laser_start;
	self->nextthink = level.time + 1;
}


/*QUAKED target_lightramp(0 .5 .8)(-8 -8 -8)(8 8 8) TOGGLE
speed		How many seconds the ramping will take
message		two letters; starting lightlevel and ending lightlevel
*/

void target_lightramp_think(edict_t *self){
	char style[2];
	
	style[0] = 'a' + self->movedir[0] +(level.time - self->timestamp) / FRAMETIME * self->movedir[2];
	style[1] = 0;
	gi.configstring(CS_LIGHTS + self->enemy->style, style);
	
	if((level.time - self->timestamp) < self->speed){
		self->nextthink = level.time + FRAMETIME;
	} else if(self->spawnflags & 1){
		char temp;
		
		temp = self->movedir[0];
		self->movedir[0] = self->movedir[1];
		self->movedir[1] = temp;
		self->movedir[2] *= -1;
	}
}

void target_lightramp_use(edict_t *self, edict_t *other, edict_t *activator){
	if(!self->enemy){
		edict_t *e;
		
	// check all the targets
		e = NULL;
		while(1){
			e = G_Find(e, FOFS(targetname), self->target);
			if(!e)
				break;
			if(strcmp(e->classname, "light") != 0){
				gi.dprintf("%s at %s ", self->classname, vtos(self->s.origin));
				gi.dprintf("target %s(%s at %s) is not a light\n", self->target, e->classname, vtos(e->s.origin));
			} else {
				self->enemy = e;
			}
		}
		
		if(!self->enemy){
			gi.dprintf("%s target %s not found at %s\n", self->classname, self->target, vtos(self->s.origin));
			G_FreeEdict(self);
			return;
		}
	}
	
	self->timestamp = level.time;
	target_lightramp_think(self);
}

void SP_target_lightramp(edict_t *self){
	if(!self->message || strlen(self->message) != 2 || self->message[0] < 'a' || self->message[0] > 'z' || self->message[1] < 'a' || self->message[1] > 'z' || self->message[0] == self->message[1]){
		gi.dprintf("target_lightramp has bad ramp(%s) at %s\n", self->message, vtos(self->s.origin));
		G_FreeEdict(self);
		return;
	}
	
	if(deathmatch->value){
		G_FreeEdict(self);
		return;
	}
	
	if(!self->target){
		gi.dprintf("%s with no target at %s\n", self->classname, vtos(self->s.origin));
		G_FreeEdict(self);
		return;
	}
	
	self->svflags |= SVF_NOCLIENT;
	self->use = target_lightramp_use;
	self->think = target_lightramp_think;
	
	self->movedir[0] = self->message[0] - 'a';
	self->movedir[1] = self->message[1] - 'a';
	self->movedir[2] =(self->movedir[1] - self->movedir[0]) /(self->speed / FRAMETIME);
}


/*QUAKED target_earthquake(1 0 0)(-8 -8 -8)(8 8 8)
When triggered, this initiates a level-wide earthquake.
All players and monsters are affected.
"speed"		severity of the quake(default:200)
"count"		duration of the quake(default:5)
*/

void target_earthquake_think(edict_t *self){
	int i;
	edict_t *e;
	
	if(self->last_move_time < level.time){
		gi.positioned_sound(self->s.origin, self, CHAN_AUTO, self->noise_index, 1.0, ATTN_NONE, 0);
		self->last_move_time = level.time + 0.5;
	}
	
	for(i = 1, e = g_edicts + i; i < globals.num_edicts; i++, e++){
		if(!e->inuse)
			continue;
		if(!e->client)
			continue;
		if(!e->groundentity)
			continue;
			
		e->groundentity = NULL;
		e->velocity[0] += crandom() * 150;
		e->velocity[1] += crandom() * 150;
		e->velocity[2] = self->speed *(100.0 / e->mass);
	}
	
	if(level.time < self->timestamp)
		self->nextthink = level.time + FRAMETIME;
}

void target_earthquake_use(edict_t *self, edict_t *other, edict_t *activator){
	self->timestamp = level.time + self->count;
	self->nextthink = level.time + FRAMETIME;
	self->activator = activator;
	self->last_move_time = 0;
}

void SP_target_earthquake(edict_t *self){
	if(!self->targetname)
		gi.dprintf("untargeted %s at %s\n", self->classname, vtos(self->s.origin));
		
	if(!self->count)
		self->count = 5;
		
	if(!self->speed)
		self->speed = 200;
		
	self->svflags |= SVF_NOCLIENT;
	self->think = target_earthquake_think;
	self->use = target_earthquake_use;
	
	self->noise_index = gi.soundindex("world/quake.wav");
}