v0.3.3: added char properties, starting with IMMOVABLE implementation

src/com/shatteredpixel/shatteredpixeldungeon/actors/Char.java

@@ -447,4 +447,16 @@ public abstract class Char extends Actor {
 	public HashSet<Class<?>> immunities() {
 		return EMPTY;
 	}
+
+	protected HashSet<Property> properties = new HashSet<>();
+
+	public HashSet<Property> properties() { return properties; }
+
+	public enum Property{
+		BOSS,
+		MINIBOSS,
+		UNDEAD,
+		EVIL,
+		IMMOVABLE
+	}
 }

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

@@ -82,7 +82,7 @@ public class Guard extends Mob {
 	}
 
 	private boolean chain(int target){
-		if (chainsUsed)
+		if (chainsUsed || enemy.properties().contains(Property.IMMOVABLE))
 			return false;
 
 		Ballistica chain = new Ballistica(pos, target, Ballistica.PROJECTILE);

src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/RotHeart.java

@@ -43,6 +43,8 @@ public class RotHeart extends Mob {
 		EXP = 4;
 
 		state = PASSIVE;
+
+		properties.add(Property.IMMOVABLE);
 	}
 
 	@Override

src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/RotLasher.java

@@ -49,6 +49,8 @@ public class RotLasher extends Mob {
 		lootChance = 1f;
 
 		state = WANDERING = new Waiting();
+
+		properties.add(Property.IMMOVABLE);
 	}
 
 	@Override

src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Yog.java

@@ -70,6 +70,8 @@ public class Yog extends Mob {
 		EXP = 50;
 		
 		state = PASSIVE;
+
+		properties.add(Property.IMMOVABLE);
 	}
 	
 	private static final String TXT_DESC =

src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/npcs/Shopkeeper.java

@@ -40,18 +40,13 @@ public class Shopkeeper extends NPC {
 	{
 		name = "shopkeeper";
 		spriteClass = ShopkeeperSprite.class;
+
+		properties.add(Property.IMMOVABLE);
 	}
 	
 	@Override
 	protected boolean act() {
 
-		if (startPos == -1) startPos = pos;
-
-		if (startPos != pos){
-			flee();
-			return true;
-		}
-		
 		throwItem();
 		
 		sprite.turnTo( pos, Dungeon.hero.pos );