v0.8.0: enemy balance tweaks:

- guard accuracy reduced by ~15%
- guard armor reduced by ~12%
- necromancer evasion increased by ~18%
- ripper demon spawn rate reduced by 20%
- demon spawners now have 120 health, down from 150
- demon spawners now resist damage past 20, down from 25
- regular enemies are slightly less common in demon halls

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

@@ -32,6 +32,7 @@ import com.shatteredpixel.shatteredpixeldungeon.effects.Pushing;
 import com.shatteredpixel.shatteredpixeldungeon.items.potions.PotionOfHealing;
 import com.shatteredpixel.shatteredpixeldungeon.scenes.GameScene;
 import com.shatteredpixel.shatteredpixeldungeon.sprites.SpawnerSprite;
+import com.watabou.utils.Bundle;
 import com.watabou.utils.PathFinder;
 import com.watabou.utils.Random;
 
@@ -42,7 +43,7 @@ public class DemonSpawner extends Mob {
 	{
 		spriteClass = SpawnerSprite.class;
 
-		HP = HT = 150;
+		HP = HT = 120;
 		defenseSkill = 0;
 
 		EXP = 25;
@@ -72,7 +73,7 @@ public class DemonSpawner extends Mob {
 		return true;
 	}
 
-	private float spawnCooldown = 50;
+	private float spawnCooldown = 60;
 
 	@Override
 	protected boolean act() {
@@ -98,7 +99,7 @@ public class DemonSpawner extends Mob {
 					Actor.addDelayed(new Pushing(spawn, pos, spawn.pos), -1);
 				}
 
-				spawnCooldown += 50;
+				spawnCooldown += 60;
 			}
 		}
 		return super.act();
@@ -106,15 +107,29 @@ public class DemonSpawner extends Mob {
 
 	@Override
 	public void damage(int dmg, Object src) {
-		if (dmg >= 25){
-			//takes 25/26/27/28/29/30/31/32/33/34/35 dmg
-			// at   25/27/30/34/39/45/52/60/69/79/90 incoming dmg
-			dmg = 24 + (int)(Math.sqrt(8*(dmg - 24) + 1) - 1)/2;
+		if (dmg >= 20){
+			//takes 20/21/22/23/24/25/26/27/28/29/30 dmg
+			// at   20/22/25/29/34/40/47/55/64/74/85 incoming dmg
+			dmg = 19 + (int)(Math.sqrt(8*(dmg - 19) + 1) - 1)/2;
 		}
 		spawnCooldown -= dmg;
 		super.damage(dmg, src);
 	}
 
+	public static final String SPAWN_COOLDOWN = "spawn_cooldown";
+
+	@Override
+	public void storeInBundle(Bundle bundle) {
+		super.storeInBundle(bundle);
+		bundle.put(SPAWN_COOLDOWN, spawnCooldown);
+	}
+
+	@Override
+	public void restoreFromBundle(Bundle bundle) {
+		super.restoreFromBundle(bundle);
+		spawnCooldown = bundle.getFloat(SPAWN_COOLDOWN);
+	}
+
 	{
 		immunities.add( Paralysis.class );
 		immunities.add( Amok.class );

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

@@ -115,12 +115,12 @@ public class Guard extends Mob {
 
 	@Override
 	public int attackSkill( Char target ) {
-		return 14;
+		return 12;
 	}
 
 	@Override
 	public int drRoll() {
-		return Random.NormalIntRange(0, 8);
+		return Random.NormalIntRange(0, 7);
 	}
 
 	@Override

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

@@ -50,7 +50,7 @@ public class Necromancer extends Mob {
 		spriteClass = NecromancerSprite.class;
 		
 		HP = HT = 35;
-		defenseSkill = 11;
+		defenseSkill = 13;
 		
 		EXP = 7;
 		maxLvl = 14;

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

@@ -76,7 +76,13 @@ public class HallsLevel extends RegularLevel {
 
 		return rooms;
 	}
-	
+
+	@Override
+	public int nMobs() {
+		//remove one mob to account for ripper demon spawners
+		return super.nMobs()-1;
+	}
+
 	@Override
 	protected int standardRooms() {
 		//8 to 10, average 8.67

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/special/DemonSpawnerRoom.java

@@ -49,7 +49,8 @@ public class DemonSpawnerRoom extends SpecialRoom {
 		spawner.pos = cx + cy * level.width();
 		level.mobs.add( spawner );
 
-		int rippers = Random.IntRange(1, 2);
+		//2/3 chance for 1, 1/3 chance for 2
+		int rippers = Random.chances( new float[]{0, 2, 1});
 
 		for (int i = 0; i < rippers; i++){
 			int pos;