v0.3.2: implemented corpse dust quest

src/com/shatteredpixel/shatteredpixeldungeon/items/quest/CorpseDust.java

@@ -20,8 +20,22 @@
  */
 package com.shatteredpixel.shatteredpixeldungeon.items.quest;
 
+import com.shatteredpixel.shatteredpixeldungeon.Assets;
+import com.shatteredpixel.shatteredpixeldungeon.Dungeon;
+import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
+import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Buff;
+import com.shatteredpixel.shatteredpixeldungeon.actors.hero.Hero;
+import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
+import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Wraith;
 import com.shatteredpixel.shatteredpixeldungeon.items.Item;
+import com.shatteredpixel.shatteredpixeldungeon.levels.Level;
 import com.shatteredpixel.shatteredpixeldungeon.sprites.ItemSpriteSheet;
+import com.shatteredpixel.shatteredpixeldungeon.utils.GLog;
+import com.watabou.noosa.audio.Sample;
+import com.watabou.utils.Bundle;
+import com.watabou.utils.Random;
+
+import java.util.ArrayList;
 
 public class CorpseDust extends Item {
 	
@@ -35,6 +49,11 @@ public class CorpseDust extends Item {
 		unique = true;
 	}
 
+	@Override
+	public ArrayList<String> actions(Hero hero) {
+		return new ArrayList<>(); //yup, no dropping this one
+	}
+
 	@Override
 	public boolean isUpgradable() {
 		return false;
@@ -45,10 +64,84 @@ public class CorpseDust extends Item {
 		return true;
 	}
 
+	@Override
+	public boolean doPickUp(Hero hero) {
+		if (super.doPickUp(hero)){
+			GLog.n("You feel a shiver run down your spine.");
+			Buff.affect(hero, DustGhostSpawner.class);
+			return true;
+		}
+		return false;
+	}
+
+	@Override
+	protected void onDetach() {
+		DustGhostSpawner spawner = Dungeon.hero.buff(DustGhostSpawner.class);
+		if (spawner != null){
+			spawner.dispel();
+		}
+	}
+
 	@Override
 	public String info() {
 		return
-			"The ball of corpse dust doesn't differ outwardly from a regular dust ball. However, " +
+			"The ball of corpse dust doesn't differ outwardly from a regular dust ball. But you " +
-			"you know somehow that it's better to get rid of it as soon as possible.";
+			"can feel a malevolent energy lurking within it.\n\n" +
+			"Getting rid of it as soon as possible would be a good idea.";
 	}
+
+	public static class DustGhostSpawner extends Buff {
+
+		int spawnPower = 0;
+
+		@Override
+		public boolean act() {
+			spawnPower++;
+			int wraiths = 1; //we include the wraith we're trying to spawn
+			for (Mob mob : Dungeon.level.mobs){
+				if (mob instanceof Wraith){
+					wraiths++;
+				}
+			}
+
+			int powerNeeded = Math.min(25, wraiths*wraiths);
+
+			if (powerNeeded <= spawnPower){
+				spawnPower -= powerNeeded;
+				int pos = 0;
+				do{
+					pos = Random.Int(Level.LENGTH);
+				} while (!Dungeon.visible[pos] || !Level.passable[pos] || Actor.findChar( pos ) != null);
+				Wraith.spawnAt(pos);
+				Sample.INSTANCE.play(Assets.SND_CURSED);
+			}
+
+			spend(TICK);
+			return true;
+		}
+
+		public void dispel(){
+			detach();
+			for (Mob mob : Dungeon.level.mobs.toArray(new Mob[0])){
+				if (mob instanceof Wraith){
+					mob.die(null);
+				}
+			}
+		}
+
+		private static String SPAWNPOWER = "spawnpower";
+
+		@Override
+		public void storeInBundle(Bundle bundle) {
+			super.storeInBundle(bundle);
+			bundle.put( SPAWNPOWER, spawnPower );
+		}
+
+		@Override
+		public void restoreFromBundle(Bundle bundle) {
+			super.restoreFromBundle(bundle);
+			spawnPower = bundle.getInt( SPAWNPOWER );
+		}
+	}
+
 }