// go into chase stateseeyou:	if (actor->info->seesound)	{		int             sound;		sound = actor->info->seesound;		if(actor->flags2&MF2_BOSS)		{ // Full volume			S_StartSound(NULL, sound);		}		else		{			S_StartSound(actor, sound);		}	}	P_SetMobjState(actor, actor->info->seestate);}/*================ A_Chase== Actor has a melee attack, so it tries to close as fast as possible===============*/void A_Chase(mobj_t *actor){	int delta;	if(actor->reactiontime)	{		actor->reactiontime--;	}	// Modify target threshold	if(actor->threshold)	{		actor->threshold--;	}	if(gameskill == sk_nightmare)	{ // Monsters move faster in nightmare mode		actor->tics -= actor->tics/2;		if(actor->tics < 3)		{			actor->tics = 3;		}	}//// turn towards movement direction if not there yet//	if(actor->movedir < 8)	{		actor->angle &= (7<<29);		delta = actor->angle-(actor->movedir << 29);		if(delta > 0)		{			actor->angle -= ANG90/2;		}		else if(delta < 0)		{			actor->angle += ANG90/2;		}	}	if(!actor->target || !(actor->target->flags&MF_SHOOTABLE))	{ // look for a new target		if(P_LookForPlayers(actor, true))		{ // got a new target			return;		}		P_SetMobjState(actor, actor->info->spawnstate);		return;	}//// don't attack twice in a row//	if(actor->flags & MF_JUSTATTACKED)	{		actor->flags &= ~MF_JUSTATTACKED;		if (gameskill != sk_nightmare)			P_NewChaseDir (actor);		return;	}//// check for melee attack//	if (actor->info->meleestate && P_CheckMeleeRange (actor))	{		if(actor->info->attacksound)		{			S_StartSound (actor, actor->info->attacksound);		}		P_SetMobjState (actor, actor->info->meleestate);		return;	}//// check for missile attack//	if (actor->info->missilestate)	{		if (gameskill < sk_nightmare && actor->movecount)			goto nomissile;		if (!P_CheckMissileRange (actor))			goto nomissile;		P_SetMobjState (actor, actor->info->missilestate);		actor->flags |= MF_JUSTATTACKED;		return;	}nomissile://// possibly choose another target//	if (netgame && !actor->threshold && !P_CheckSight (actor, actor->target) )	{		if (P_LookForPlayers(actor,true))			return;         // got a new target	}//// chase towards player//	if (--actor->movecount<0 || !P_Move (actor))	{		P_NewChaseDir (actor);	}//// make active sound//	if(actor->info->activesound && P_Random() < 3)	{		if(actor->type == MT_BISHOP && P_Random() < 128)		{			S_StartSound(actor, actor->info->seesound);		}		else if(actor->type == MT_PIG)		{			S_StartSound(actor, SFX_PIG_ACTIVE1+(P_Random()&1));		}		else if(actor->flags2&MF2_BOSS)		{			S_StartSound(NULL, actor->info->activesound);		}		else		{			S_StartSound(actor, actor->info->activesound);		}	}}//----------------------------------------------------------------------------//// PROC A_FaceTarget////----------------------------------------------------------------------------void A_FaceTarget(mobj_t *actor){	if(!actor->target)	{		return;	}	actor->flags &= ~MF_AMBUSH;	actor->angle = R_PointToAngle2(actor->x, actor->y, actor->target->x,		actor->target->y);	if(actor->target->flags&MF_SHADOW)	{ // Target is a ghost		actor->angle += (P_Random()-P_Random())<<21;	}}//----------------------------------------------------------------------------//// PROC A_Pain////----------------------------------------------------------------------------void A_Pain(mobj_t *actor){	if(actor->info->painsound)	{		S_StartSound(actor, actor->info->painsound);	}}//============================================================================//// A_SetInvulnerable////============================================================================void A_SetInvulnerable(mobj_t *actor){	actor->flags2 |= MF2_INVULNERABLE;}//============================================================================//// A_UnSetInvulnerable////============================================================================void A_UnSetInvulnerable(mobj_t *actor){	actor->flags2 &= ~MF2_INVULNERABLE;}//============================================================================//// A_SetReflective////============================================================================void A_SetReflective(mobj_t *actor){	actor->flags2 |= MF2_REFLECTIVE;	if ((actor->type == MT_CENTAUR) ||		(actor->type == MT_CENTAURLEADER))	{		A_SetInvulnerable(actor);	}}//============================================================================//// A_UnSetReflective////============================================================================void A_UnSetReflective(mobj_t *actor){	actor->flags2 &= ~MF2_REFLECTIVE;	if ((actor->type == MT_CENTAUR) ||		(actor->type == MT_CENTAURLEADER))	{		A_UnSetInvulnerable(actor);	}}//----------------------------------------------------------------------------//// FUNC P_UpdateMorphedMonster//// Returns true if the pig morphs.////----------------------------------------------------------------------------boolean P_UpdateMorphedMonster(mobj_t *actor, int tics){	mobj_t *fog;	fixed_t x;	fixed_t y;	fixed_t z;	mobjtype_t moType;	mobj_t *mo;	mobj_t oldMonster;	actor->special1 -= tics;	if(actor->special1 > 0)	{		return(false);	}	moType = actor->special2;	switch(moType)	{		case MT_WRAITHB:			// These must remain morphed		case MT_SERPENT:		case MT_SERPENTLEADER:		case MT_MINOTAUR:			return(false);		default:			break;	}	x = actor->x;	y = actor->y;	z = actor->z;	oldMonster = *actor;			// Save pig vars	P_RemoveMobjFromTIDList(actor);	P_SetMobjState(actor, S_FREETARGMOBJ);	mo = P_SpawnMobj(x, y, z, moType);	if(P_TestMobjLocation(mo) == false)	{ // Didn't fit		P_RemoveMobj(mo);		mo = P_SpawnMobj(x, y, z, oldMonster.type);		mo->angle = oldMonster.angle;		mo->flags = oldMonster.flags;		mo->health = oldMonster.health;		mo->target = oldMonster.target;		mo->special = oldMonster.special;		mo->special1 = 5*35; // Next try in 5 seconds		mo->special2 = moType;		mo->tid = oldMonster.tid;		memcpy(mo->args, oldMonster.args, 5);		P_InsertMobjIntoTIDList(mo, oldMonster.tid);		return(false);	}	mo->angle = oldMonster.angle;	mo->target = oldMonster.target;	mo->tid = oldMonster.tid;	mo->special = oldMonster.special;	memcpy(mo->args, oldMonster.args, 5);	P_InsertMobjIntoTIDList(mo, oldMonster.tid);	fog = P_SpawnMobj(x, y, z+TELEFOGHEIGHT, MT_TFOG);	S_StartSound(fog, SFX_TELEPORT);	return(true);}//----------------------------------------------------------------------------//// PROC A_PigLook////----------------------------------------------------------------------------void A_PigLook(mobj_t *actor){	if(P_UpdateMorphedMonster(actor, 10))	{		return;	}	A_Look(actor);}//----------------------------------------------------------------------------//// PROC A_PigChase////----------------------------------------------------------------------------void A_PigChase(mobj_t *actor){	if(P_UpdateMorphedMonster(actor, 3))	{		return;	}	A_Chase(actor);}//============================================================================//// A_PigAttack////============================================================================void A_PigAttack(mobj_t *actor){	if(P_UpdateMorphedMonster(actor, 18))	{		return;	}	if(!actor->target)	{		return;	}	if(P_CheckMeleeRange(actor))	{		P_DamageMobj(actor->target, actor, actor, 2+(P_Random()&1));		S_StartSound(actor, SFX_PIG_ATTACK);	}}//============================================================================//// A_PigPain////============================================================================void A_PigPain(mobj_t *actor){	A_Pain(actor);	if(actor->z <= actor->floorz)	{		actor->momz = 3.5*FRACUNIT;	}}void FaceMovementDirection(mobj_t *actor){	switch(actor->movedir)	{		case DI_EAST:			actor->angle = 0<<24;			break;		case DI_NORTHEAST:			actor->angle = 32<<24;			break;		case DI_NORTH:			actor->angle = 64<<24;			break;		case DI_NORTHWEST:			actor->angle = 96<<24;			break;		case DI_WEST:			actor->angle = 128<<24;			break;		case DI_SOUTHWEST:			actor->angle = 160<<24;			break;		case DI_SOUTH:			actor->angle = 192<<24;			break;		case DI_SOUTHEAST:			actor->angle = 224<<24;			break;	}}//----------------------------------------------------------------------------//// Minotaur variables//// 	special1		pointer to player that spawned it (mobj_t)//	special2		internal to minotaur AI//	args[0]			args[0]-args[3] together make up minotaur start time//	args[1]			|//	args[2]			|//	args[3]			V//	args[4]			charge duration countdown//----------------------------------------------------------------------------void A_MinotaurFade0(mobj_t *actor){	actor->flags &= ~MF_ALTSHADOW;	actor->flags |= MF_SHADOW;}void A_MinotaurFade1(mobj_t *actor){	// Second level of transparency	actor->flags &= ~MF_SHADOW;	actor->flags |= MF_ALTSHADOW;}void A_MinotaurFade2(mobj_t *actor){	// Make fully visible	actor->flags &= ~MF_SHADOW;	actor->flags &= ~MF_ALTSHADOW;}//----------------------------------------------------------------------------//// A_MinotaurRoam - //// //----------------------------------------------------------------------------void A_MinotaurLook(mobj_t *actor);void A_MinotaurRoam(mobj_t *actor){	unsigned int *starttime = (unsigned int *)actor->args;	actor->flags &= ~MF_SHADOW;			// In case pain caused him to 	actor->flags &= ~MF_ALTSHADOW;		// skip his fade in.	if ((leveltime - *starttime) >= MAULATORTICS)	{		P_DamageMobj(actor,NULL,NULL,10000);		return;	}	if (P_Random()<30)		A_MinotaurLook(actor);		// adjust to closest target	if (P_Random()<6)	{		//Choose new direction		actor->movedir = P_Random() % 8;		FaceMovementDirection(actor);	}	if (!P_Move(actor))	{		// Turn		if (P_Random() & 1)			actor->movedir = (++actor->movedir)%8;		else			actor->movedir = (actor->movedir+7)%8;		FaceMovementDirection(actor);	}}//----------------------------------------------------------------------------////	PROC A_MinotaurLook//// Look for enemy of player//----------------------------------------------------------------------------#define MINOTAUR_LOOK_DIST		(16*54*FRACUNIT)void A_MinotaurLook(mobj_t *actor){	mobj_t *mo=NULL;	player_t *player;	thinker_t *think;	fixed_t dist;	int i;	mobj_t *master = (mobj_t *)(actor->special1);	actor->target = NULL;	if (deathmatch)					// Quick search for players	{    	for (i=0; i<MAXPLAYERS; i++)		{			if (!playeringame[i]) continue;			player = &players[i];			mo = player->mo;			if (mo == master) continue;			if (mo->health <= 0) continue;			dist = P_AproxDistance(actor->x - mo->x, actor->y - mo->y);			if (dist > MINOTAUR_LOOK_DIST) continue;			actor->target = mo;			break;		}	}	if (!actor->target)				// Near player monster search	{		if (master && (master->health>0) && (master->player))			mo = P_RoughMonsterSearch(master, 20);		else			mo = P_RoughMonsterSearch(actor, 20);		actor->target = mo;	}	if (!actor->target)				// Normal monster search	{		for(think = thinkercap.next; think != &thinkercap; think = think->next)		{			if(think->function != P_MobjThinker) continue;			mo = (mobj_t *)think;			if (!(mo->flags&MF_COUNTKILL)) continue;			if (mo->health <= 0) continue;			if (!(mo->flags&MF_SHOOTABLE)) continue;			dist = P_AproxDistance(actor->x - mo->x, actor->y - mo->y);			if (dist > MINOTAUR_LOOK_DIST) continue;			if ((mo == master) || (mo == actor)) continue;			if ((mo->type == MT_MINOTAUR) &&				(mo->special1 == actor->special1)) continue;			actor->target = mo;			break;			// Found mobj to attack		}	}	if (actor->target)	{		P_SetMobjStateNF(actor, S_MNTR_WALK1);	}	else	{		P_SetMobjStateNF(actor, S_MNTR_ROAM1);	}}void A_MinotaurChase(mobj_t *actor){	unsigned int *starttime = (unsigned int *)actor->args;	actor->flags &= ~MF_SHADOW;			// In case pain caused him to 	actor->flags &= ~MF_ALTSHADOW;		// skip his fade in.	if ((leveltime - *starttime) >= MAULATORTICS)	{		P_DamageMobj(actor,NULL,NULL,10000);		return;	}	if (P_Random()<30)		A_MinotaurLook(actor);		// adjust to closest target	if (!actor->target || (actor->target->health <= 0) ||		!(actor->target->flags&MF_SHOOTABLE))	{ // look for a new target		P_SetMobjState(actor, S_MNTR_LOOK1);		return;	}	FaceMovementDirection(actor);	actor->reactiontime=0;	// Melee attack	if (actor->info->meleestate && P_CheckMeleeRange(actor))	{		if(actor->info->attacksound)		{			S_StartSound (actor, actor->info->attacksound);		}		P_SetMobjState (actor, actor->info->meleestate);		return;	}