gzdoom/wadsrc/static/zscript/hexen/serpent.txt

// Serpent ------------------------------------------------------------------

class Serpent : Actor
{
	Default
	{
		Health 90;
		PainChance 96;
		Speed 12;
		Radius 32;
		Height 70;
		Mass 0x7fffffff;
		Monster;
		-SHOOTABLE
		+NOBLOOD
		+CANTLEAVEFLOORPIC +NONSHOOTABLE
		+STAYMORPHED +DONTBLAST +NOTELEOTHER
		+INVISIBLE
		SeeSound "SerpentSight";
		AttackSound "SerpentAttack";
		PainSound "SerpentPain";
		DeathSound "SerpentDeath";
		HitObituary "$OB_SERPENTHIT";
	}

	native void A_SerpentHumpDecide();
	native void A_SerpentHide();
	native void A_SerpentCheckForAttack();
	native void A_SerpentSpawnGibs();
	native void A_SerpentUnHide();
	native void A_SerpentRaiseHump();
	native void A_SerpentLowerHump();
	native void A_SerpentChooseAttack();
	native void A_SerpentMeleeAttack();

	States
	{
	Spawn:
		SSPT H 10 A_Look;
		Loop;
	See:
		SSPT HH 1 A_Chase("Melee", null, CHF_NIGHTMAREFAST|CHF_NOPLAYACTIVE);
		SSPT H 2 A_SerpentHumpDecide;
		Loop;
	Pain:
		SSPT L 5;
		SSPT L 5 A_Pain;
	Dive:
		SSDV ABC 4;
		SSDV D 4 A_UnSetShootable;
		SSDV E 3 A_PlaySound("SerpentActive", CHAN_BODY);
		SSDV F 3;
		SSDV GH 4;
		SSDV I 3;
		SSDV J 3 A_SerpentHide;
		Goto See;
	Melee:
		SSPT A 1 A_UnHideThing;
		SSPT A 1 A_PlaySound("SerpentBirth", CHAN_BODY);
		SSPT B 3 A_SetShootable;
		SSPT C 3;
		SSPT D 4 A_SerpentCheckForAttack;
		Goto Dive;
	Death:
		SSPT O 4;
		SSPT P 4 A_Scream;
		SSPT Q 4 A_NoBlocking;
		SSPT RSTUVWXYZ 4;
		Stop;
	XDeath:
		SSXD A 4;
		SSXD B 4 A_SpawnItemEx("SerpentHead", 0, 0, 45);
		SSXD C 4 A_NoBlocking;
		SSXD DE 4;
		SSXD FG 3;
		SSXD H 3 A_SerpentSpawnGibs;
		Stop;
	Ice:
		SSPT [ 5 A_FreezeDeath;
		SSPT [ 1 A_FreezeDeathChunks;
		Wait;
	Walk:
		SSPT IJI 5 A_Chase("Attack", null, CHF_NIGHTMAREFAST);
		SSPT J 5 A_SerpentCheckForAttack;
		Goto Dive;
	Hump:
		SSPT H 3 A_SerpentUnHide;
		SSPT EFGEF 3 A_SerpentRaiseHump;
		SSPT GEF 3;
		SSPT GEFGE 3 A_SerpentLowerHump;
		SSPT F 3 A_SerpentHide;
		Goto See;
	Attack:
		SSPT K 6 A_FaceTarget;
		SSPT L 5 A_SerpentChooseAttack;
		Goto MeleeAttack;
	MeleeAttack:
		SSPT N 5 A_SerpentMeleeAttack;
		Goto Dive;
	}
}

// Serpent Leader -----------------------------------------------------------

class SerpentLeader : Serpent
{
	Default
	{
		Mass 200;
		Obituary "$OB_SERPENT";
	}
	States
	{
	Missile:
		SSPT N 5 A_CustomMissile("SerpentFX", 32, 0);
		Goto Dive;
	}
}

// Serpent Missile Ball -----------------------------------------------------

class SerpentFX : Actor
{
	Default
	{
		Speed 15;
		Radius 8;
		Height 10;
		Damage 4;
		Projectile;
		-ACTIVATEIMPACT -ACTIVATEPCROSS
		RenderStyle "Add";
		DeathSound "SerpentFXHit";
	}
	States
	{
	Spawn:
		SSFX A 0;
		SSFX A 3 Bright A_PlaySound("SerpentFXContinuous", CHAN_BODY, 1.0, 1);
		SSFX BAB 3 Bright;
		Goto Spawn+1;
	Death:
		SSFX C 4 Bright A_StopSound(CHAN_BODY);
		SSFX DEFGH 4 Bright;
		Stop;
	}
}

// Serpent Head -------------------------------------------------------------

class SerpentHead : Actor
{
	Default
	{
		Radius 5;
		Height 10;
		Gravity 0.125;
		+NOBLOCKMAP
	}

	native void A_SerpentHeadCheck();

	States
	{
	Spawn:
		SSXD IJKLMNOP 4 A_SerpentHeadCheck;
		Loop;
	Death:
		SSXD S -1;
		Loop;
	}
}

// Serpent Gib 1 ------------------------------------------------------------

class SerpentGib1 : Actor
{
	Default
	{
		Radius 3;
		Height 3;
		+NOBLOCKMAP +NOGRAVITY
	}

	native void A_FloatGib();
	native void A_DelayGib();
	native void A_SinkGib();

	States
	{
	Spawn:
		SSXD Q 6;
		SSXD Q 6 A_FloatGib;
		SSXD QQ 8 A_FloatGib;
		SSXD QQ 12 A_FloatGib;
		SSXD Q 232 A_DelayGib;
		SSXD QQ 12 A_SinkGib;
		SSXD QQQ 8 A_SinkGib;
		Stop;
	}
}

// Serpent Gib 2 ------------------------------------------------------------

class SerpentGib2 : SerpentGib1
{
	States
	{
	Spawn:
		SSXD R 6;
		SSXD R 6 A_FloatGib;
		SSXD RR 8 A_FloatGib;
		SSXD RR 12 A_FloatGib;
		SSXD R 232 A_DelayGib;
		SSXD RR 12 A_SinkGib;
		SSXD RRR 8 A_SinkGib;
		Stop;
	}
}

// Serpent Gib 3 ------------------------------------------------------------

class SerpentGib3 : SerpentGib1
{
	States
	{
	Spawn:
		SSXD T 6;
		SSXD T 6 A_FloatGib;
		SSXD TT 8 A_FloatGib;
		SSXD TT 12 A_FloatGib;
		SSXD T 232 A_DelayGib;
		SSXD TT 12 A_SinkGib;
		SSXD TTT 8 A_SinkGib;
		Stop;
	}
}