v0.6.1: overhauled bestiary logic for improved consistency

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Bestiary.java

@@ -21,165 +21,208 @@
 
 package com.shatteredpixel.shatteredpixeldungeon.actors.mobs;
 
-import com.shatteredpixel.shatteredpixeldungeon.ShatteredPixelDungeon;
 import com.watabou.utils.Random;
 
-public class Bestiary {
+import java.util.ArrayList;
+import java.util.Arrays;
 
-	public static Mob mob( int depth ) {
+public class Bestiary {
-		@SuppressWarnings("unchecked")
+	
-		Class<? extends Mob> cl = (Class<? extends Mob>)mobClass( depth );
+	public static ArrayList<Class<? extends Mob>> getMobRotation( int depth ){
-		try {
+		ArrayList<Class<? extends Mob>> mobs = standardMobRotation( depth );
-			return cl.newInstance();
+		addRareMobs(depth, mobs);
-		} catch (Exception e) {
+		swapMobAlts(mobs);
-			ShatteredPixelDungeon.reportException(e);
+		Random.shuffle(mobs);
-			return null;
+		return mobs;
+	}
+	
+	//returns a rotation of standard mobs, unshuffled.
+	private static ArrayList<Class<? extends Mob>> standardMobRotation( int depth ){
+		switch(depth){
+			
+			// Sewers
+			case 1: default:
+				//10x rat
+				return new ArrayList<Class<? extends Mob>>(Arrays.asList(
+						Rat.class, Rat.class, Rat.class, Rat.class, Rat.class,
+						Rat.class, Rat.class, Rat.class, Rat.class, Rat.class));
+			case 2:
+				//3x rat, 3x gnoll
+				return new ArrayList<>(Arrays.asList(Rat.class, Rat.class, Rat.class,
+						Gnoll.class, Gnoll.class, Gnoll.class));
+			case 3:
+				//2x rat, 4x gnoll, 1x crab, 1x swarm
+				return new ArrayList<>(Arrays.asList(Rat.class, Rat.class,
+						Gnoll.class, Gnoll.class, Gnoll.class, Gnoll.class,
+						Crab.class, Swarm.class));
+			case 4:
+				//1x rat, 2x gnoll, 3x crab, 1x swarm
+				return new ArrayList<>(Arrays.asList(Rat.class,
+						Gnoll.class, Gnoll.class,
+						Crab.class, Crab.class, Crab.class,
+						Swarm.class));
+				
+			// Prison
+			case 6:
+				//3x skeleton, 1x thief, 1x swarm
+				return new ArrayList<>(Arrays.asList(Skeleton.class, Skeleton.class, Skeleton.class,
+						Thief.class,
+						Swarm.class));
+			case 7:
+				//3x skeleton, 1x thief, 1x shaman, 1x guard
+				return new ArrayList<>(Arrays.asList(Skeleton.class, Skeleton.class, Skeleton.class,
+						Thief.class,
+						Shaman.class,
+						Guard.class));
+			case 8:
+				//3x skeleton, 1x thief, 2x shaman, 2x guard
+				return new ArrayList<>(Arrays.asList(Skeleton.class, Skeleton.class, Skeleton.class,
+						Thief.class,
+						Shaman.class, Shaman.class,
+						Guard.class, Guard.class));
+			case 9:
+				//3x skeleton, 1x thief, 2x shaman, 3x guard
+				return new ArrayList<>(Arrays.asList(Skeleton.class, Skeleton.class, Skeleton.class,
+						Thief.class,
+						Shaman.class, Shaman.class,
+						Guard.class, Guard.class, Guard.class));
+				
+			// Caves
+			case 11:
+				//5x bat, 1x brute
+				return new ArrayList<>(Arrays.asList(
+						Bat.class, Bat.class, Bat.class, Bat.class, Bat.class,
+						Brute.class));
+			case 12:
+				//5x bat, 5x brute, 1x spinner
+				return new ArrayList<>(Arrays.asList(
+						Bat.class, Bat.class, Bat.class, Bat.class, Bat.class,
+						Brute.class, Brute.class, Brute.class, Brute.class, Brute.class,
+						Spinner.class));
+			case 13:
+				//1x bat, 3x brute, 1x shaman, 1x spinner
+				return new ArrayList<>(Arrays.asList(
+						Bat.class,
+						Brute.class, Brute.class, Brute.class,
+						Shaman.class,
+						Spinner.class));
+			case 14:
+				//1x bat, 3x brute, 1x shaman, 4x spinner
+				return new ArrayList<>(Arrays.asList(
+						Bat.class,
+						Brute.class, Brute.class, Brute.class,
+						Shaman.class,
+						Spinner.class, Spinner.class, Spinner.class, Spinner.class));
+				
+			// City
+			case 16:
+				//5x elemental, 5x warlock, 1x monk
+				return new ArrayList<>(Arrays.asList(
+						Elemental.class, Elemental.class, Elemental.class, Elemental.class, Elemental.class,
+						Warlock.class, Warlock.class, Warlock.class, Warlock.class, Warlock.class,
+						Monk.class));
+			case 17:
+				//2x elemental, 2x warlock, 2x monk
+				return new ArrayList<>(Arrays.asList(
+						Elemental.class, Elemental.class,
+						Warlock.class, Warlock.class,
+						Monk.class, Monk.class));
+			case 18:
+				//1x elemental, 1x warlock, 2x monk, 1x golem
+				return new ArrayList<>(Arrays.asList(
+						Elemental.class,
+						Warlock.class,
+						Monk.class, Monk.class,
+						Golem.class));
+			case 19:
+				//1x elemental, 1x warlock, 2x monk, 3x golem
+				return new ArrayList<>(Arrays.asList(
+						Elemental.class,
+						Warlock.class,
+						Monk.class, Monk.class,
+						Golem.class, Golem.class, Golem.class));
+				
+			// Halls
+			case 22:
+				//3x succubus, 3x evil eye
+				return new ArrayList<>(Arrays.asList(
+						Succubus.class, Succubus.class, Succubus.class,
+						Eye.class, Eye.class, Eye.class));
+			case 23:
+				//2x succubus, 4x evil eye, 2x scorpio
+				return new ArrayList<>(Arrays.asList(
+						Succubus.class, Succubus.class,
+						Eye.class, Eye.class, Eye.class, Eye.class,
+						Scorpio.class, Scorpio.class));
+			case 24:
+				//1x succubus, 2x evil eye, 3x scorpio
+				return new ArrayList<>(Arrays.asList(
+						Succubus.class,
+						Eye.class, Eye.class,
+						Scorpio.class, Scorpio.class, Scorpio.class));
+		}
+		
+	}
+	
+	//has a chance to add a rarely spawned mobs to the rotation
+	public static void addRareMobs( int depth, ArrayList<Class<?extends Mob>> rotation ){
+		
+		switch (depth){
+			
+			// Sewers
+			default:
+				return;
+			case 4:
+				if (Random.Float() < 0.01f) rotation.add(Skeleton.class);
+				if (Random.Float() < 0.01f) rotation.add(Thief.class);
+				return;
+				
+			// Prison
+			case 6:
+				if (Random.Float() < 0.2f)  rotation.add(Shaman.class);
+				return;
+			case 8:
+				if (Random.Float() < 0.02f) rotation.add(Bat.class);
+				return;
+			case 9:
+				if (Random.Float() < 0.02f) rotation.add(Bat.class);
+				if (Random.Float() < 0.01f) rotation.add(Brute.class);
+				return;
+				
+			// Caves
+			case 13:
+				if (Random.Float() < 0.02f) rotation.add(Elemental.class);
+				return;
+			case 14:
+				if (Random.Float() < 0.02f) rotation.add(Elemental.class);
+				if (Random.Float() < 0.01f) rotation.add(Monk.class);
+				return;
+				
+			// City
+			case 19:
+				if (Random.Float() < 0.02f) rotation.add(Succubus.class);
+				return;
 		}
 	}
 	
-	public static Mob mutable( int depth ) {
+	//switches out regular mobs for their alt versions when appropriate
-		@SuppressWarnings("unchecked")
+	private static void swapMobAlts(ArrayList<Class<?extends Mob>> rotation){
-		Class<? extends Mob> cl = (Class<? extends Mob>)mobClass( depth );
+		for (int i = 0; i < rotation.size(); i++){
-		
+			if (Random.Int( 50 ) == 0) {
-		if (Random.Int( 30 ) == 0) {
+				Class<? extends Mob> cl = rotation.get(i);
-			if (cl == Rat.class) {
+				if (cl == Rat.class) {
-				cl = Albino.class;
+					cl = Albino.class;
-			} else if (cl == Thief.class) {
+				} else if (cl == Thief.class) {
-				cl = Bandit.class;
+					cl = Bandit.class;
-			} else if (cl == Brute.class) {
+				} else if (cl == Brute.class) {
-				cl = Shielded.class;
+					cl = Shielded.class;
-			} else if (cl == Monk.class) {
+				} else if (cl == Monk.class) {
-				cl = Senior.class;
+					cl = Senior.class;
-			} else if (cl == Scorpio.class) {
+				} else if (cl == Scorpio.class) {
-				cl = Acidic.class;
+					cl = Acidic.class;
+				}
+				rotation.set(i, cl);
 			}
 		}
-		
-		try {
-			return cl.newInstance();
-		} catch (Exception e) {
-			ShatteredPixelDungeon.reportException(e);
-			return null;
-		}
-	}
-	
-	private static Class<?> mobClass( int depth ) {
-		
-		float[] chances;
-		Class<?>[] classes;
-		
-		switch (depth) {
-		case 1:
-			chances = new float[]{ 1 };
-			classes = new Class<?>[]{ Rat.class };
-			break;
-		case 2:
-			chances = new float[]{ 1, 1 };
-			classes = new Class<?>[]{ Rat.class, Gnoll.class };
-			break;
-		case 3:
-			chances = new float[]{ 2, 4, 1, 1 };
-			classes = new Class<?>[]{ Rat.class, Gnoll.class, Crab.class, Swarm.class };
-			break;
-		case 4:
-			chances = new float[]{ 1, 2, 3, 1,   0.01f, 0.01f };
-			classes = new Class<?>[]{ Rat.class, Gnoll.class, Crab.class, Swarm.class,    Skeleton.class, Thief.class };
-			break;
-			
-		case 5:
-			chances = new float[]{ 1 };
-			classes = new Class<?>[]{ Goo.class };
-			break;
-			
-		case 6:
-			chances = new float[]{ 3, 1, 1,     0.2f };
-			classes = new Class<?>[]{ Skeleton.class, Thief.class, Swarm.class,   Shaman.class };
-			break;
-		case 7:
-			chances = new float[]{ 3, 1, 1, 1 };
-			classes = new Class<?>[]{ Skeleton.class, Shaman.class, Thief.class, Guard.class };
-			break;
-		case 8:
-			chances = new float[]{ 3, 2, 2, 1,   0.02f };
-			classes = new Class<?>[]{ Skeleton.class, Shaman.class, Guard.class, Thief.class,   Bat.class };
-			break;
-		case 9:
-			chances = new float[]{ 3, 3, 2, 1,   0.02f, 0.01f };
-			classes = new Class<?>[]{ Skeleton.class, Guard.class, Shaman.class, Thief.class,   Bat.class, Brute.class };
-			break;
-			
-		case 10:
-			chances = new float[]{ 1 };
-			classes = new Class<?>[]{ Tengu.class };
-			break;
-			
-		case 11:
-			chances = new float[]{ 1,   0.2f };
-			classes = new Class<?>[]{ Bat.class,   Brute.class };
-			break;
-		case 12:
-			chances = new float[]{ 1, 1,   0.2f };
-			classes = new Class<?>[]{ Bat.class, Brute.class,   Spinner.class };
-			break;
-		case 13:
-			chances = new float[]{ 1, 3, 1, 1,   0.02f };
-			classes = new Class<?>[]{ Bat.class, Brute.class, Shaman.class, Spinner.class,    Elemental.class };
-			break;
-		case 14:
-			chances = new float[]{ 1, 3, 1, 4,    0.02f, 0.01f };
-			classes = new Class<?>[]{ Bat.class, Brute.class, Shaman.class, Spinner.class,    Elemental.class, Monk.class };
-			break;
-			
-		case 15:
-			chances = new float[]{ 1 };
-			classes = new Class<?>[]{ DM300.class };
-			break;
-			
-		case 16:
-			chances = new float[]{ 1, 1,   0.2f };
-			classes = new Class<?>[]{ Elemental.class, Warlock.class,    Monk.class };
-			break;
-		case 17:
-			chances = new float[]{ 1, 1, 1 };
-			classes = new Class<?>[]{ Elemental.class, Monk.class, Warlock.class };
-			break;
-		case 18:
-			chances = new float[]{ 1, 2, 1, 1 };
-			classes = new Class<?>[]{ Elemental.class, Monk.class, Golem.class, Warlock.class };
-			break;
-		case 19:
-			chances = new float[]{ 1, 2, 3, 1,    0.02f };
-			classes = new Class<?>[]{ Elemental.class, Monk.class, Golem.class, Warlock.class,    Succubus.class };
-			break;
-			
-		case 20:
-			chances = new float[]{ 1 };
-			classes = new Class<?>[]{ King.class };
-			break;
-			
-		case 22:
-			chances = new float[]{ 1, 1 };
-			classes = new Class<?>[]{ Succubus.class, Eye.class };
-			break;
-		case 23:
-			chances = new float[]{ 1, 2, 1 };
-			classes = new Class<?>[]{ Succubus.class, Eye.class, Scorpio.class };
-			break;
-		case 24:
-			chances = new float[]{ 1, 2, 3 };
-			classes = new Class<?>[]{ Succubus.class, Eye.class, Scorpio.class };
-			break;
-			
-		case 25:
-			chances = new float[]{ 1 };
-			classes = new Class<?>[]{ Yog.class };
-			break;
-			
-		default:
-			chances = new float[]{ 1 };
-			classes = new Class<?>[]{ Eye.class };
-		}
-		
-		return classes[ Random.chances( chances )];
 	}
 }

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/armor/curses/Multiplicity.java

@@ -26,7 +26,6 @@ import com.shatteredpixel.shatteredpixeldungeon.ShatteredPixelDungeon;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Char;
 import com.shatteredpixel.shatteredpixeldungeon.actors.hero.Hero;
-import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Bestiary;
 import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mimic;
 import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
 import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Statue;
@@ -71,7 +70,7 @@ public class Multiplicity extends Armor.Glyph {
 					//FIXME should probably have a mob property for this
 					if (attacker.properties().contains(Char.Property.BOSS) || attacker.properties().contains(Char.Property.MINIBOSS)
 							|| attacker instanceof Mimic || attacker instanceof Statue){
-						m = Bestiary.mutable(Dungeon.depth % 5 == 0 ? Dungeon.depth - 1 : Dungeon.depth);
+						m = Dungeon.level.createMob();
 					} else {
 						try {
 							m = (Mob)attacker.getClass().newInstance();

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/CavesBossLevel.java

@@ -26,7 +26,7 @@ import com.shatteredpixel.shatteredpixeldungeon.Bones;
 import com.shatteredpixel.shatteredpixeldungeon.Dungeon;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Char;
-import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Bestiary;
+import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.DM300;
 import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
 import com.shatteredpixel.shatteredpixeldungeon.effects.CellEmitter;
 import com.shatteredpixel.shatteredpixeldungeon.effects.Speck;
@@ -201,6 +201,11 @@ public class CavesBossLevel extends Level {
 		return true;
 	}
 	
+	@Override
+	public Mob createMob() {
+		return null;
+	}
+	
 	@Override
 	protected void createMobs() {
 	}
@@ -240,7 +245,7 @@ public class CavesBossLevel extends Level {
 			enteredArena = true;
 			seal();
 			
-			Mob boss = Bestiary.mob( Dungeon.depth );
+			DM300 boss = new DM300();
 			boss.state = boss.WANDERING;
 			do {
 				boss.pos = Random.Int( length() );

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/CityBossLevel.java

@@ -26,7 +26,7 @@ import com.shatteredpixel.shatteredpixeldungeon.Bones;
 import com.shatteredpixel.shatteredpixeldungeon.Dungeon;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Char;
-import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Bestiary;
+import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.King;
 import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
 import com.shatteredpixel.shatteredpixeldungeon.items.Heap;
 import com.shatteredpixel.shatteredpixeldungeon.items.Item;
@@ -153,6 +153,11 @@ public class CityBossLevel extends Level {
 		}
 	}
 	
+	@Override
+	public Mob createMob() {
+		return null;
+	}
+	
 	@Override
 	protected void createMobs() {
 	}
@@ -194,7 +199,7 @@ public class CityBossLevel extends Level {
 			enteredArena = true;
 			seal();
 			
-			Mob boss = Bestiary.mob( Dungeon.depth );
+			King boss = new King();
 			boss.state = boss.WANDERING;
 			int count = 0;
 			do {

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/DeadEndLevel.java

@@ -23,6 +23,7 @@ package com.shatteredpixel.shatteredpixeldungeon.levels;
 
 import com.shatteredpixel.shatteredpixeldungeon.Assets;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
+import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
 
 public class DeadEndLevel extends Level {
 
@@ -71,7 +72,12 @@ public class DeadEndLevel extends Level {
 		
 		return true;
 	}
-
+	
+	@Override
+	public Mob createMob() {
+		return null;
+	}
+	
 	@Override
 	protected void createMobs() {
 	}

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/HallsBossLevel.java

@@ -26,6 +26,7 @@ import com.shatteredpixel.shatteredpixeldungeon.Bones;
 import com.shatteredpixel.shatteredpixeldungeon.Dungeon;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Char;
+import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
 import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Yog;
 import com.shatteredpixel.shatteredpixeldungeon.effects.CellEmitter;
 import com.shatteredpixel.shatteredpixeldungeon.effects.particles.FlameParticle;
@@ -141,6 +142,11 @@ public class HallsBossLevel extends Level {
 		return true;
 	}
 	
+	@Override
+	public Mob createMob() {
+		return null;
+	}
+	
 	@Override
 	protected void createMobs() {
 	}

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/LastLevel.java

@@ -23,6 +23,7 @@ package com.shatteredpixel.shatteredpixeldungeon.levels;
 
 import com.shatteredpixel.shatteredpixeldungeon.Assets;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
+import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
 import com.shatteredpixel.shatteredpixeldungeon.items.Amulet;
 import com.shatteredpixel.shatteredpixeldungeon.levels.painters.Painter;
 import com.shatteredpixel.shatteredpixeldungeon.messages.Messages;
@@ -112,7 +113,12 @@ public class LastLevel extends Level {
 
 		return true;
 	}
-
+	
+	@Override
+	public Mob createMob() {
+		return null;
+	}
+	
 	@Override
 	protected void createMobs() {
 	}

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/LastShopLevel.java

@@ -24,6 +24,7 @@ package com.shatteredpixel.shatteredpixeldungeon.levels;
 import com.shatteredpixel.shatteredpixeldungeon.Assets;
 import com.shatteredpixel.shatteredpixeldungeon.Bones;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
+import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
 import com.shatteredpixel.shatteredpixeldungeon.items.Heap;
 import com.shatteredpixel.shatteredpixeldungeon.items.Item;
 import com.shatteredpixel.shatteredpixeldungeon.levels.builders.Builder;
@@ -99,6 +100,11 @@ public class LastShopLevel extends RegularLevel {
 				.setGrass( 0.10f, 3 );
 	}
 	
+	@Override
+	public Mob createMob() {
+		return null;
+	}
+	
 	@Override
 	protected void createMobs() {
 	}

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/Level.java

@@ -39,7 +39,6 @@ import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.MindVision;
 import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Shadows;
 import com.shatteredpixel.shatteredpixeldungeon.actors.hero.Hero;
 import com.shatteredpixel.shatteredpixeldungeon.actors.hero.HeroClass;
-import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Bestiary;
 import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
 import com.shatteredpixel.shatteredpixeldungeon.effects.particles.FlowParticle;
 import com.shatteredpixel.shatteredpixeldungeon.effects.particles.WindParticle;
@@ -460,6 +459,8 @@ public abstract class Level implements Bundlable {
 	}
 	
 	abstract protected boolean build();
+	
+	abstract public Mob createMob();
 
 	abstract protected void createMobs();
 
@@ -519,7 +520,7 @@ public abstract class Level implements Bundlable {
 			protected boolean act() {
 				if (mobs.size() < nMobs()) {
 
-					Mob mob = Bestiary.mutable( Dungeon.depth );
+					Mob mob = createMob();
 					mob.state = mob.WANDERING;
 					mob.pos = randomRespawnCell();
 					if (Dungeon.hero.isAlive() && mob.pos != -1 && distance(Dungeon.hero.pos, mob.pos) >= 4) {

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/PrisonBossLevel.java

@@ -134,7 +134,12 @@ public class PrisonBossLevel extends Level {
 
 		return true;
 	}
-
+	
+	@Override
+	public Mob createMob() {
+		return null;
+	}
+	
 	@Override
 	protected void createMobs() {
 		tengu = new Tengu(); //We want to keep track of tengu independently of other mobs, he's not always in the level.

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/RegularLevel.java

@@ -24,6 +24,7 @@ package com.shatteredpixel.shatteredpixeldungeon.levels;
 import com.shatteredpixel.shatteredpixeldungeon.Badges;
 import com.shatteredpixel.shatteredpixeldungeon.Bones;
 import com.shatteredpixel.shatteredpixeldungeon.Dungeon;
+import com.shatteredpixel.shatteredpixeldungeon.ShatteredPixelDungeon;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
 import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Bestiary;
 import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
@@ -191,6 +192,21 @@ public abstract class RegularLevel extends Level {
 		}
 	}
 	
+	private ArrayList<Class<?extends Mob>> mobsToSpawn = new ArrayList<>();
+	
+	@Override
+	public Mob createMob() {
+		if (mobsToSpawn == null || mobsToSpawn.isEmpty())
+			mobsToSpawn = Bestiary.getMobRotation(Dungeon.depth);
+		
+		try {
+			return mobsToSpawn.remove(0).newInstance();
+		} catch (Exception e) {
+			ShatteredPixelDungeon.reportException(e);
+			return null;
+		}
+	}
+	
 	@Override
 	protected void createMobs() {
 		//on floor 1, 10 rats are created so the player can get level 2.
@@ -215,7 +231,7 @@ public abstract class RegularLevel extends Level {
 				stdRoomIter = stdRooms.iterator();
 			Room roomToSpawn = stdRoomIter.next();
 
-			Mob mob = Bestiary.mob( Dungeon.depth );
+			Mob mob = createMob();
 			mob.pos = pointToCell(roomToSpawn.random());
 
 			if (findMob(mob.pos) == null && Level.passable[mob.pos]) {
@@ -224,7 +240,7 @@ public abstract class RegularLevel extends Level {
 
 				//TODO: perhaps externalize this logic into a method. Do I want to make mobs more likely to clump deeper down?
 				if (mobsToSpawn > 0 && Random.Int(4) == 0){
-					mob = Bestiary.mob( Dungeon.depth );
+					mob = createMob();
 					mob.pos = pointToCell(roomToSpawn.random());
 
 					if (findMob(mob.pos)  == null && Level.passable[mob.pos]) {
@@ -420,6 +436,7 @@ public abstract class RegularLevel extends Level {
 	public void storeInBundle( Bundle bundle ) {
 		super.storeInBundle( bundle );
 		bundle.put( "rooms", rooms );
+		bundle.put( "mobs_to_spawn", mobsToSpawn.toArray(new Class[0]));
 	}
 	
 	@SuppressWarnings("unchecked")
@@ -436,6 +453,12 @@ public abstract class RegularLevel extends Level {
 				roomExit = r;
 			}
 		}
+		
+		if (bundle.contains( "mobs_to_spawn" )) {
+			for (Class<? extends Mob> mob : bundle.getClassArray("mobs_to_spawn")) {
+				if (mob != null) mobsToSpawn.add(mob);
+			}
+		}
 	}
 	
 }

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/SewerBossLevel.java

@@ -22,10 +22,8 @@
 package com.shatteredpixel.shatteredpixeldungeon.levels;
 
 import com.shatteredpixel.shatteredpixeldungeon.Bones;
-import com.shatteredpixel.shatteredpixeldungeon.Dungeon;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
-import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Bestiary;
+import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Goo;
-import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
 import com.shatteredpixel.shatteredpixeldungeon.items.Heap;
 import com.shatteredpixel.shatteredpixeldungeon.items.Item;
 import com.shatteredpixel.shatteredpixeldungeon.levels.builders.Builder;
@@ -115,13 +113,13 @@ public class SewerBossLevel extends SewerLevel {
 
 	@Override
 	protected void createMobs() {
-		Mob mob = Bestiary.mob( Dungeon.depth );
+		Goo boss = new Goo();
 		Room room;
 		do {
 			room = randomRoom(StandardRoom.class);
 		} while (room == roomEntrance);
-		mob.pos = pointToCell(room.random());
+		boss.pos = pointToCell(room.random());
-		mobs.add( mob );
+		mobs.add( boss );
 	}
 	
 	public Actor respawner() {

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/traps/SummoningTrap.java

@@ -23,7 +23,6 @@ package com.shatteredpixel.shatteredpixeldungeon.levels.traps;
 
 import com.shatteredpixel.shatteredpixeldungeon.Dungeon;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
-import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Bestiary;
 import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
 import com.shatteredpixel.shatteredpixeldungeon.items.scrolls.ScrollOfTeleportation;
 import com.shatteredpixel.shatteredpixeldungeon.levels.Level;
@@ -78,7 +77,7 @@ public class SummoningTrap extends Trap {
 		ArrayList<Mob> mobs = new ArrayList<>();
 
 		for (Integer point : respawnPoints) {
-			Mob mob = Bestiary.mob( Dungeon.depth );
+			Mob mob = Dungeon.level.createMob();
 			mob.state = mob.WANDERING;
 			mob.pos = point;
 			GameScene.add( mob, DELAY );