data improvements

src/main/java/net/minecraft/server/BlockMobSpawner.java

@@ -0,0 +1,44 @@
+package net.minecraft.server;
+
+import java.util.Random;
+
+public class BlockMobSpawner extends BlockContainer {
+
+    protected BlockMobSpawner(int i, int j) {
+        super(i, j, Material.STONE);
+    }
+
+    public TileEntity a_() {
+        return new TileEntityMobSpawner();
+    }
+
+    public int a(int i, Random random) {
+        return Block.MOB_SPAWNER.id; // CraftBukkit
+    }
+
+    public int a(Random random) {
+        return 1; // CraftBukkit
+    }
+
+    // CraftBukkit start
+    public void dropNaturally(World world, int i, int j, int k, int l, float f) {
+        TileEntity entity = world.getTileEntity(i, j, k);
+        if (entity instanceof TileEntityMobSpawner) {
+            super.dropNaturally(world, i, j, k, ((TileEntityMobSpawner) entity).getId(), f);
+        }
+    }
+
+    public void remove(World world, int i, int j, int k) {
+        dropNaturally(world, i, j, k, 0, 1.0f);
+        super.remove(world, i, j, k);
+    }
+
+    protected int a_(int i) {
+        return i;
+    }
+    // CraftBukkit end
+
+    public boolean a() {
+        return false;
+    }
+}