gzdoom/wadsrc/static/zscript/shared/morph.txt

class MorphProjectile : Actor native
{

	native Class<PlayerPawn> PlayerClass;
	native Class<Actor> MonsterClass, MorphFlash, UnMorphFlash;
	native int Duration, MorphStyle;

	Default
	{
		Damage 1;
		Projectile;
		-ACTIVATEIMPACT
		-ACTIVATEPCROSS
	}
}

class MorphedMonster : Actor native
{
	native Actor UnmorphedMe;
	native int UnmorphTime, MorphStyle;
	native Class<Actor> MorphExitFlash;

	Default
	{
		Monster;
		-COUNTKILL
		+FLOORCLIP
	}
}