Merge pull request #66 from jtara1/master

HarvesterNPC should spawn a biomass in-place after they die. Fixes #33

Plugin Plant/src/main/java/net/simon987/biomassplugin/event/ObjectDeathListener.java

@@ -0,0 +1,62 @@
+package net.simon987.biomassplugin.event;
+
+import net.simon987.server.GameServer;
+import net.simon987.server.event.GameEvent;
+import net.simon987.server.event.GameEventListener;
+import net.simon987.server.event.ObjectDeathEvent;
+import net.simon987.biomassplugin.BiomassBlob;
+import net.simon987.server.game.GameObject;
+import net.simon987.server.game.World;
+import net.simon987.server.logging.LogManager;
+
+import java.lang.Random;
+
+/**
+ * Handles ObjectDeathEvent events
+ */
+public class ObjectDeathListener implements GameEventListener {
+    @Override
+    public Class getListenedEventType() {
+        return ObjectDeathEvent.getClass();
+    }
+
+    @Override
+    public void handle(GameEvent event) {
+        // a HarvesterNPC ObjectDeathEvent is received
+        // TODO: setup enum with all GameObject type IDs
+        if (((ObjectDeathEvent)event).getSourceObjectId().equals(10)) {
+            GameObject dyingHarvesterNPC = (GameObject)event.getSource();
+
+            // create a new biomass
+            BiomassBlob newBiomassBlob = createBiomassBlobAt(
+                    dyingHarvesterNPC.getX(), dyingHarvesterNPC.getY(), dyingHarvesterNPC.getWorld());
+            // add it to the world game objects
+            dyingHarvesterNPC.getWorld().getGameObjects.add(newBiomassBlob);
+            LogManager.LOGGER.fine("Spawned biomass at (%d, %d)".format(
+                    newBiomassBlob.getX(),newBiomassBlob.getY()));
+        }
+    }
+
+    /**
+     * Create and return a biomass at the given x, y coordinates and in the world
+     * @param x x coord of biomass location
+     * @param y y coord of biomass location
+     * @param world world in which the biomass will be created in
+     * @return the new BiomassBlob created
+     */
+    private BiomassBlob createBiomassBlobAt(int x, int y, World world) {
+        Random random = new Random();
+        // random integer in range [2, 4]
+        int yield = random.nextInt(2) + 2;
+
+        BiomassBlob biomassBlob = new BiomassBlob();
+        biomassBlob.setObjectId(GameServer.INSTANCE.getGameUniverse().getNextObjectId());
+        // biomassBlob.setStyle(0); //TODO: set style depending on difficulty level? or random? from config?
+        biomassBlob.setBiomassCount(yield);
+        biomassBlob.setX(x);
+        biomassBlob.setY(y);
+        biomassBlob.setWorld(world);
+
+        return biomassBlob;
+    }
+}