g_misc.c

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

	}
}

void SP_point_combat (edict_t *self)
{
	if (deathmatch->value)
	{
		G_FreeEdict (self);
		return;
	}
	self->solid = SOLID_TRIGGER;
	self->touch = point_combat_touch;
	VectorSet (self->mins, -8, -8, -16);
	VectorSet (self->maxs, 8, 8, 16);
	self->svflags = SVF_NOCLIENT;
	gi.linkentity (self);
};


/*QUAKED viewthing (0 .5 .8) (-8 -8 -8) (8 8 8)
Just for the debugging level.  Don't use
*/
void TH_viewthing(edict_t *ent)
{
	ent->s.frame = (ent->s.frame + 1) % 7;
	ent->nextthink = level.time + FRAMETIME;
}

void SP_viewthing(edict_t *ent)
{
	gi.dprintf ("viewthing spawned\n");

	ent->movetype = MOVETYPE_NONE;
	ent->solid = SOLID_BBOX;
	ent->s.renderfx = RF_FRAMELERP;
	VectorSet (ent->mins, -16, -16, -24);
	VectorSet (ent->maxs, 16, 16, 32);
	ent->s.modelindex = gi.modelindex ("models/objects/banner/tris.md2");
	gi.linkentity (ent);
	ent->nextthink = level.time + 0.5;
	ent->think = TH_viewthing;
	return;
}


/*QUAKED info_null (0 0.5 0) (-4 -4 -4) (4 4 4)
Used as a positional target for spotlights, etc.
*/
void SP_info_null (edict_t *self)
{
	G_FreeEdict (self);
};


/*QUAKED info_notnull (0 0.5 0) (-4 -4 -4) (4 4 4)
Used as a positional target for lightning.
*/
void SP_info_notnull (edict_t *self)
{
	VectorCopy (self->s.origin, self->absmin);
	VectorCopy (self->s.origin, self->absmax);
};


/*QUAKED light (0 1 0) (-8 -8 -8) (8 8 8) START_OFF
Non-displayed light.
Default light value is 300.
Default style is 0.
If targeted, will toggle between on and off.
Default _cone value is 10 (used to set size of light for spotlights)
*/

#define START_OFF	1

static void light_use (edict_t *self, edict_t *other, edict_t *activator)
{
	if (self->spawnflags & START_OFF)
	{
		gi.configstring (CS_LIGHTS+self->style, "m");
		self->spawnflags &= ~START_OFF;
	}
	else
	{
		gi.configstring (CS_LIGHTS+self->style, "a");
		self->spawnflags |= START_OFF;
	}
}

void SP_light (edict_t *self)
{
	// no targeted lights in deathmatch, because they cause global messages
	if (!self->targetname || deathmatch->value)
	{
		G_FreeEdict (self);
		return;
	}

	if (self->style >= 32)
	{
		self->use = light_use;
		if (self->spawnflags & START_OFF)
			gi.configstring (CS_LIGHTS+self->style, "a");
		else
			gi.configstring (CS_LIGHTS+self->style, "m");
	}
}


/*QUAKED func_wall (0 .5 .8) ? TRIGGER_SPAWN TOGGLE START_ON ANIMATED ANIMATED_FAST
This is just a solid wall if not inhibited

TRIGGER_SPAWN	the wall will not be present until triggered
				it will then blink in to existance; it will
				kill anything that was in it's way

TOGGLE			only valid for TRIGGER_SPAWN walls
				this allows the wall to be turned on and off

START_ON		only valid for TRIGGER_SPAWN walls
				the wall will initially be present
*/

void func_wall_use (edict_t *self, edict_t *other, edict_t *activator)
{
	if (self->solid == SOLID_NOT)
	{
		self->solid = SOLID_BSP;
		self->svflags &= ~SVF_NOCLIENT;
		KillBox (self);
	}
	else
	{
		self->solid = SOLID_NOT;
		self->svflags |= SVF_NOCLIENT;
	}
	gi.linkentity (self);

	if (!(self->spawnflags & 2))
		self->use = NULL;
}

void SP_func_wall (edict_t *self)
{
	self->movetype = MOVETYPE_PUSH;
	gi.setmodel (self, self->model);

	if (self->spawnflags & 8)
		self->s.effects |= EF_ANIM_ALL;
	if (self->spawnflags & 16)
		self->s.effects |= EF_ANIM_ALLFAST;

	// just a wall
	if ((self->spawnflags & 7) == 0)
	{
		self->solid = SOLID_BSP;
		gi.linkentity (self);
		return;
	}

	// it must be TRIGGER_SPAWN
	if (!(self->spawnflags & 1))
	{
//		gi.dprintf("func_wall missing TRIGGER_SPAWN\n");
		self->spawnflags |= 1;
	}

	// yell if the spawnflags are odd
	if (self->spawnflags & 4)
	{
		if (!(self->spawnflags & 2))
		{
			gi.dprintf("func_wall START_ON without TOGGLE\n");
			self->spawnflags |= 2;
		}
	}

	self->use = func_wall_use;
	if (self->spawnflags & 4)
	{
		self->solid = SOLID_BSP;
	}
	else
	{
		self->solid = SOLID_NOT;
		self->svflags |= SVF_NOCLIENT;
	}
	gi.linkentity (self);
}


/*QUAKED func_object (0 .5 .8) ? TRIGGER_SPAWN ANIMATED ANIMATED_FAST
This is solid bmodel that will fall if it's support it removed.
*/

void func_object_touch (edict_t *self, edict_t *other, cplane_t *plane, csurface_t *surf)
{
	// only squash thing we fall on top of
	if (!plane)
		return;
	if (plane->normal[2] < 1.0)
		return;
	if (other->takedamage == DAMAGE_NO)
		return;
	T_Damage (other, self, self, vec3_origin, self->s.origin, vec3_origin, self->dmg, 1, 0, MOD_CRUSH);
}

void func_object_release (edict_t *self)
{
	self->movetype = MOVETYPE_TOSS;
	self->touch = func_object_touch;
}

void func_object_use (edict_t *self, edict_t *other, edict_t *activator)
{
	self->solid = SOLID_BSP;
	self->svflags &= ~SVF_NOCLIENT;
	self->use = NULL;
	KillBox (self);
	func_object_release (self);
}

void SP_func_object (edict_t *self)
{
	gi.setmodel (self, self->model);

	self->mins[0] += 1;
	self->mins[1] += 1;
	self->mins[2] += 1;
	self->maxs[0] -= 1;
	self->maxs[1] -= 1;
	self->maxs[2] -= 1;

	if (!self->dmg)
		self->dmg = 100;

	if (self->spawnflags == 0)
	{
		self->solid = SOLID_BSP;
		self->movetype = MOVETYPE_PUSH;
		self->think = func_object_release;
		self->nextthink = level.time + 2 * FRAMETIME;
	}
	else
	{
		self->solid = SOLID_NOT;
		self->movetype = MOVETYPE_PUSH;
		self->use = func_object_use;
		self->svflags |= SVF_NOCLIENT;
	}

	if (self->spawnflags & 2)
		self->s.effects |= EF_ANIM_ALL;
	if (self->spawnflags & 4)
		self->s.effects |= EF_ANIM_ALLFAST;

	self->clipmask = MASK_MONSTERSOLID;

	gi.linkentity (self);
}


/*QUAKED func_explosive (0 .5 .8) ? Trigger_Spawn ANIMATED ANIMATED_FAST
Any brush that you want to explode or break apart.  If you want an
ex0plosion, set dmg and it will do a radius explosion of that amount
at the center of the bursh.

If targeted it will not be shootable.

health defaults to 100.

mass defaults to 75.  This determines how much debris is emitted when
it explodes.  You get one large chunk per 100 of mass (up to 8) and
one small chunk per 25 of mass (up to 16).  So 800 gives the most.
*/
void func_explosive_explode (edict_t *self, edict_t *inflictor, edict_t *attacker, int damage, vec3_t point)
{
	vec3_t	origin;
	vec3_t	chunkorigin;
	vec3_t	size;
	int		count;
	int		mass;

	// bmodel origins are (0 0 0), we need to adjust that here
	VectorScale (self->size, 0.5, size);
	VectorAdd (self->absmin, size, origin);
	VectorCopy (origin, self->s.origin);

	self->takedamage = DAMAGE_NO;

	if (self->dmg)
		T_RadiusDamage (self, attacker, self->dmg, NULL, self->dmg+40, MOD_EXPLOSIVE);

	VectorSubtract (self->s.origin, inflictor->s.origin, self->velocity);
	VectorNormalize (self->velocity);
	VectorScale (self->velocity, 150, self->velocity);

	// start chunks towards the center
	VectorScale (size, 0.5, size);

	mass = self->mass;
	if (!mass)
		mass = 75;

	// big chunks
	if (mass >= 100)
	{
		count = mass / 100;
		if (count > 8)
			count = 8;
		while(count--)
		{
			chunkorigin[0] = origin[0] + crandom() * size[0];
			chunkorigin[1] = origin[1] + crandom() * size[1];
			chunkorigin[2] = origin[2] + crandom() * size[2];
			ThrowDebris (self, "models/objects/debris1/tris.md2", 1, chunkorigin);
		}
	}

	// small chunks
	count = mass / 25;
	if (count > 16)
		count = 16;
	while(count--)
	{
		chunkorigin[0] = origin[0] + crandom() * size[0];
		chunkorigin[1] = origin[1] + crandom() * size[1];
		chunkorigin[2] = origin[2] + crandom() * size[2];
		ThrowDebris (self, "models/objects/debris2/tris.md2", 2, chunkorigin);
	}

	G_UseTargets (self, attacker);

	if (self->dmg)
		BecomeExplosion1 (self);
	else
		G_FreeEdict (self);
}

void func_explosive_use(edict_t *self, edict_t *other, edict_t *activator)
{
	func_explosive_explode (self, self, other, self->health, vec3_origin);
}

void func_explosive_spawn (edict_t *self, edict_t *other, edict_t *activator)
{
	self->solid = SOLID_BSP;
	self->svflags &= ~SVF_NOCLIENT;
	self->use = NULL;
	KillBox (self);
	gi.linkentity (self);
}

void SP_func_explosive (edict_t *self)
{
	if (deathmatch->value)
	{	// auto-remove for deathmatch
		G_FreeEdict (self);
		return;
	}

	self->movetype = MOVETYPE_PUSH;

	gi.modelindex ("models/objects/debris1/tris.md2");
	gi.modelindex ("models/objects/debris2/tris.md2");

	gi.setmodel (self, self->model);

	if (self->spawnflags & 1)
	{
		self->svflags |= SVF_NOCLIENT;
		self->solid = SOLID_NOT;
		self->use = func_explosive_spawn;
	}
	else
	{
		self->solid = SOLID_BSP;
		if (self->targetname)
			self->use = func_explosive_use;
	}

	if (self->spawnflags & 2)
		self->s.effects |= EF_ANIM_ALL;
	if (self->spawnflags & 4)
		self->s.effects |= EF_ANIM_ALLFAST;

	if (self->use != func_explosive_use)
	{
		if (!self->health)
			self->health = 100;
		self->die = func_explosive_explode;
		self->takedamage = DAMAGE_YES;
	}

	gi.linkentity (self);
}


/*QUAKED misc_explobox (0 .5 .8) (-16 -16 0) (16 16 40)
Large exploding box.  You can override its mass (100),
health (80), and dmg (150).
*/

void barrel_touch (edict_t *self, edict_t *other, cplane_t *plane, csurface_t *surf)

{
	float	ratio;
	vec3_t	v;

	if ((!other->groundentity) || (other->groundentity == self))
		return;

	ratio = (float)other->mass / (float)self->mass;
	VectorSubtract (self->s.origin, other->s.origin, v);
	M_walkmove (self, vectoyaw(v), 20 * ratio * FRAMETIME);
}

void barrel_explode (edict_t *self)
{
	vec3_t	org;
	float	spd;
	vec3_t	save;

	T_RadiusDamage (self, self->activator, self->dmg, NULL, self->dmg+40, MOD_BARREL);

	VectorCopy (self->s.origin, save);
	VectorMA (self->absmin, 0.5, self->size, self->s.origin);

	// a few big chunks
	spd = 1.5 * (float)self->dmg / 200.0;
	org[0] = self->s.origin[0] + crandom() * self->size[0];
	org[1] = self->s.origin[1] + crandom() * self->size[1];
	org[2] = self->s.origin[2] + crandom() * self->size[2];
	ThrowDebris (self, "models/objects/debris1/tris.md2", spd, org);
	org[0] = self->s.origin[0] + crandom() * self->size[0];
	org[1] = self->s.origin[1] + crandom() * self->size[1];
	org[2] = self->s.origin[2] + crandom() * self->size[2];
	ThrowDebris (self, "models/objects/debris1/tris.md2", spd, org);

	// bottom corners
	spd = 1.75 * (float)self->dmg / 200.0;
	VectorCopy (self->absmin, org);
	ThrowDebris (self, "models/objects/debris3/tris.md2", spd, org);
	VectorCopy (self->absmin, org);
	org[0] += self->size[0];
	ThrowDebris (self, "models/objects/debris3/tris.md2", spd, org);
	VectorCopy (self->absmin, org);
	org[1] += self->size[1];
	ThrowDebris (self, "models/objects/debris3/tris.md2", spd, org);
	VectorCopy (self->absmin, org);
	org[0] += self->size[0];
	org[1] += self->size[1];
	ThrowDebris (self, "models/objects/debris3/tris.md2", spd, org);

	// a bunch of little chunks
	spd = 2 * self->dmg / 200;
	org[0] = self->s.origin[0] + crandom() * self->size[0];
	org[1] = self->s.origin[1] + crandom() * self->size[1];
	org[2] = self->s.origin[2] + crandom() * self->size[2];
	ThrowDebris (self, "models/objects/debris2/tris.md2", spd, org);
	org[0] = self->s.origin[0] + crandom() * self->size[0];
	org[1] = self->s.origin[1] + crandom() * self->size[1];
	org[2] = self->s.origin[2] + crandom() * self->size[2];
	ThrowDebris (self, "models/objects/debris2/tris.md2", spd, org);
	org[0] = self->s.origin[0] + crandom() * self->size[0];
	org[1] = self->s.origin[1] + crandom() * self->size[1];
	org[2] = self->s.origin[2] + crandom() * self->size[2];
	ThrowDebris (self, "models/objects/debris2/tris.md2", spd, org);
	org[0] = self->s.origin[0] + crandom() * self->size[0];
	org[1] = self->s.origin[1] + crandom() * self->size[1];
	org[2] = self->s.origin[2] + crandom() * self->size[2];