g_monster.c

著名游戏quake2原代码最新版本(vc6.0可以编译的)

		self->monsterinfo.nextframe = 0;
	}
	else
	{
		if (self->s.frame == move->lastframe)
		{
			if (move->endfunc)
			{
				move->endfunc (self);

				// regrab move, endfunc is very likely to change it
				move = self->monsterinfo.currentmove;

				// check for death
				if (self->svflags & SVF_DEADMONSTER)
					return;
			}
		}

		if (self->s.frame < move->firstframe || self->s.frame > move->lastframe)
		{
			self->monsterinfo.aiflags &= ~AI_HOLD_FRAME;
			self->s.frame = move->firstframe;
		}
		else
		{
			if (!(self->monsterinfo.aiflags & AI_HOLD_FRAME))
			{
				self->s.frame++;
				if (self->s.frame > move->lastframe)
					self->s.frame = move->firstframe;
			}
		}
	}

	index = self->s.frame - move->firstframe;
	if (move->frame[index].aifunc)
		if (!(self->monsterinfo.aiflags & AI_HOLD_FRAME))
			move->frame[index].aifunc (self, move->frame[index].dist * self->monsterinfo.scale);
		else
			move->frame[index].aifunc (self, 0);

	if (move->frame[index].thinkfunc)
		move->frame[index].thinkfunc (self);
}


void monster_think (edict_t *self)
{
	M_MoveFrame (self);
	if (self->linkcount != self->monsterinfo.linkcount)
	{
		self->monsterinfo.linkcount = self->linkcount;
		M_CheckGround (self);
	}
	M_CatagorizePosition (self);
	M_WorldEffects (self);
	M_SetEffects (self);
}


/*
================
monster_use

Using a monster makes it angry at the current activator
================
*/
void monster_use (edict_t *self, edict_t *other, edict_t *activator)
{
	if (self->enemy)
		return;
	if (self->health <= 0)
		return;
	if (activator->flags & FL_NOTARGET)
		return;
	if (!(activator->client) && !(activator->monsterinfo.aiflags & AI_GOOD_GUY))
		return;
	
// delay reaction so if the monster is teleported, its sound is still heard
	self->enemy = activator;
	FoundTarget (self);
}


void monster_start_go (edict_t *self);


void monster_triggered_spawn (edict_t *self)
{
	self->s.origin[2] += 1;
	KillBox (self);

	self->solid = SOLID_BBOX;
	self->movetype = MOVETYPE_STEP;
	self->svflags &= ~SVF_NOCLIENT;
	self->air_finished = level.time + 12;
	gi.linkentity (self);

	monster_start_go (self);

	if (self->enemy && !(self->spawnflags & 1) && !(self->enemy->flags & FL_NOTARGET))
	{
		FoundTarget (self);
	}
	else
	{
		self->enemy = NULL;
	}
}

void monster_triggered_spawn_use (edict_t *self, edict_t *other, edict_t *activator)
{
	// we have a one frame delay here so we don't telefrag the guy who activated us
	self->think = monster_triggered_spawn;
	self->nextthink = level.time + FRAMETIME;
	if (activator->client)
		self->enemy = activator;
	self->use = monster_use;
}

void monster_triggered_start (edict_t *self)
{
	self->solid = SOLID_NOT;
	self->movetype = MOVETYPE_NONE;
	self->svflags |= SVF_NOCLIENT;
	self->nextthink = 0;
	self->use = monster_triggered_spawn_use;
}


/*
================
monster_death_use

When a monster dies, it fires all of its targets with the current
enemy as activator.
================
*/
void monster_death_use (edict_t *self)
{
	self->flags &= ~(FL_FLY|FL_SWIM);
	self->monsterinfo.aiflags &= AI_GOOD_GUY;

	if (self->item)
	{
		Drop_Item (self, self->item);
		self->item = NULL;
	}

	if (self->deathtarget)
		self->target = self->deathtarget;

	if (!self->target)
		return;

	G_UseTargets (self, self->enemy);
}


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

qboolean monster_start (edict_t *self)
{
	if (deathmatch->value)
	{
		G_FreeEdict (self);
		return false;
	}

	if ((self->spawnflags & 4) && !(self->monsterinfo.aiflags & AI_GOOD_GUY))
	{
		self->spawnflags &= ~4;
		self->spawnflags |= 1;
//		gi.dprintf("fixed spawnflags on %s at %s\n", self->classname, vtos(self->s.origin));
	}

	if (!(self->monsterinfo.aiflags & AI_GOOD_GUY))
		level.total_monsters++;

	self->nextthink = level.time + FRAMETIME;
	self->svflags |= SVF_MONSTER;
	self->s.renderfx |= RF_FRAMELERP;
	self->takedamage = DAMAGE_AIM;
	self->air_finished = level.time + 12;
	self->use = monster_use;
	self->max_health = self->health;
	self->clipmask = MASK_MONSTERSOLID;

	self->s.skinnum = 0;
	self->deadflag = DEAD_NO;
	self->svflags &= ~SVF_DEADMONSTER;

	if (!self->monsterinfo.checkattack)
		self->monsterinfo.checkattack = M_CheckAttack;
	VectorCopy (self->s.origin, self->s.old_origin);

	if (st.item)
	{
		self->item = FindItemByClassname (st.item);
		if (!self->item)
			gi.dprintf("%s at %s has bad item: %s\n", self->classname, vtos(self->s.origin), st.item);
	}

	// randomize what frame they start on
	if (self->monsterinfo.currentmove)
		self->s.frame = self->monsterinfo.currentmove->firstframe + (rand() % (self->monsterinfo.currentmove->lastframe - self->monsterinfo.currentmove->firstframe + 1));

	return true;
}

void monster_start_go (edict_t *self)
{
	vec3_t	v;

	if (self->health <= 0)
		return;

	// check for target to combat_point and change to combattarget
	if (self->target)
	{
		qboolean	notcombat;
		qboolean	fixup;
		edict_t		*target;

		target = NULL;
		notcombat = false;
		fixup = false;
		while ((target = G_Find (target, FOFS(targetname), self->target)) != NULL)
		{
			if (strcmp(target->classname, "point_combat") == 0)
			{
				self->combattarget = self->target;
				fixup = true;
			}
			else
			{
				notcombat = true;
			}
		}
		if (notcombat && self->combattarget)
			gi.dprintf("%s at %s has target with mixed types\n", self->classname, vtos(self->s.origin));
		if (fixup)
			self->target = NULL;
	}

	// validate combattarget
	if (self->combattarget)
	{
		edict_t		*target;

		target = NULL;
		while ((target = G_Find (target, FOFS(targetname), self->combattarget)) != NULL)
		{
			if (strcmp(target->classname, "point_combat") != 0)
			{
				gi.dprintf("%s at (%i %i %i) has a bad combattarget %s : %s at (%i %i %i)\n",
					self->classname, (int)self->s.origin[0], (int)self->s.origin[1], (int)self->s.origin[2],
					self->combattarget, target->classname, (int)target->s.origin[0], (int)target->s.origin[1],
					(int)target->s.origin[2]);
			}
		}
	}

	if (self->target)
	{
		self->goalentity = self->movetarget = G_PickTarget(self->target);
		if (!self->movetarget)
		{
			gi.dprintf ("%s can't find target %s at %s\n", self->classname, self->target, vtos(self->s.origin));
			self->target = NULL;
			self->monsterinfo.pausetime = 100000000;
			self->monsterinfo.stand (self);
		}
		else if (strcmp (self->movetarget->classname, "path_corner") == 0)
		{
			VectorSubtract (self->goalentity->s.origin, self->s.origin, v);
			self->ideal_yaw = self->s.angles[YAW] = vectoyaw(v);
			self->monsterinfo.walk (self);
			self->target = NULL;
		}
		else
		{
			self->goalentity = self->movetarget = NULL;
			self->monsterinfo.pausetime = 100000000;
			self->monsterinfo.stand (self);
		}
	}
	else
	{
		self->monsterinfo.pausetime = 100000000;
		self->monsterinfo.stand (self);
	}

	self->think = monster_think;
	self->nextthink = level.time + FRAMETIME;
}


void walkmonster_start_go (edict_t *self)
{
	if (!(self->spawnflags & 2) && level.time < 1)
	{
		M_droptofloor (self);

		if (self->groundentity)
			if (!M_walkmove (self, 0, 0))
				gi.dprintf ("%s in solid at %s\n", self->classname, vtos(self->s.origin));
	}
	
	if (!self->yaw_speed)
		self->yaw_speed = 20;
	self->viewheight = 25;

	monster_start_go (self);

	if (self->spawnflags & 2)
		monster_triggered_start (self);
}

void walkmonster_start (edict_t *self)
{
	self->think = walkmonster_start_go;
	monster_start (self);
}


void flymonster_start_go (edict_t *self)
{
	if (!M_walkmove (self, 0, 0))
		gi.dprintf ("%s in solid at %s\n", self->classname, vtos(self->s.origin));

	if (!self->yaw_speed)
		self->yaw_speed = 10;
	self->viewheight = 25;

	monster_start_go (self);

	if (self->spawnflags & 2)
		monster_triggered_start (self);
}


void flymonster_start (edict_t *self)
{
	self->flags |= FL_FLY;
	self->think = flymonster_start_go;
	monster_start (self);
}


void swimmonster_start_go (edict_t *self)
{
	if (!self->yaw_speed)
		self->yaw_speed = 10;
	self->viewheight = 10;

	monster_start_go (self);

	if (self->spawnflags & 2)
		monster_triggered_start (self);
}

void swimmonster_start (edict_t *self)
{
	self->flags |= FL_SWIM;
	self->think = swimmonster_start_go;
	monster_start (self);
}