Added full tile entity data support for all block types that use it, including chests, dispensers, furnaces, mob spawners, and note blocks.

src/main/java/org/bukkit/craftbukkit/block/CraftFurnace.java

@@ -0,0 +1,56 @@
+package org.bukkit.craftbukkit.block;
+
+import net.minecraft.server.TileEntityFurnace;
+import org.bukkit.block.Block;
+import org.bukkit.block.Furnace;
+import org.bukkit.craftbukkit.CraftWorld;
+import org.bukkit.craftbukkit.inventory.CraftInventory;
+import org.bukkit.inventory.Inventory;
+
+/**
+ * Represents a furnace.
+ * 
+ * @author sk89q
+ */
+public class CraftFurnace extends CraftBlockState implements Furnace {
+    private final CraftWorld world;
+    private final TileEntityFurnace furnace;
+
+    public CraftFurnace(final Block block) {
+        super(block);
+
+        world = (CraftWorld)block.getWorld();
+        furnace = (TileEntityFurnace)world.getTileEntityAt(getX(), getY(), getZ());
+    }
+
+    public Inventory getInventory() {
+        return new CraftInventory(furnace);
+    }
+
+    @Override
+    public boolean update(boolean force) {
+        boolean result = super.update(force);
+
+        if (result) {
+            furnace.d();
+        }
+
+        return result;
+    }
+
+    public short getBurnTime() {
+        return (short)furnace.e;
+    }
+
+    public void setBurnTime(short burnTime) {
+        furnace.e = burnTime;
+    }
+
+    public short getCookTime() {
+        return (short)furnace.g;
+    }
+
+    public void setCookTime(short cookTime) {
+        furnace.g = cookTime;
+    }
+}