Add BlockCake for diff visibility.

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

@@ -0,0 +1,88 @@
+package net.minecraft.server;
+
+import java.util.Random;
+
+public class BlockCake extends Block {
+
+    protected BlockCake(int i) {
+        super(i, Material.CAKE);
+        this.b(true);
+    }
+
+    public void updateShape(IBlockAccess iblockaccess, int i, int j, int k) {
+        int l = iblockaccess.getData(i, j, k);
+        float f = 0.0625F;
+        float f1 = (float) (1 + l * 2) / 16.0F;
+        float f2 = 0.5F;
+
+        this.a(f1, 0.0F, f, 1.0F - f, f2, 1.0F - f);
+    }
+
+    public void g() {
+        float f = 0.0625F;
+        float f1 = 0.5F;
+
+        this.a(f, 0.0F, f, 1.0F - f, f1, 1.0F - f);
+    }
+
+    public AxisAlignedBB b(World world, int i, int j, int k) {
+        int l = world.getData(i, j, k);
+        float f = 0.0625F;
+        float f1 = (float) (1 + l * 2) / 16.0F;
+        float f2 = 0.5F;
+
+        return AxisAlignedBB.a().a((double) ((float) i + f1), (double) j, (double) ((float) k + f), (double) ((float) (i + 1) - f), (double) ((float) j + f2 - f), (double) ((float) (k + 1) - f));
+    }
+
+    public boolean b() {
+        return false;
+    }
+
+    public boolean c() {
+        return false;
+    }
+
+    public boolean interact(World world, int i, int j, int k, EntityHuman entityhuman, int l, float f, float f1, float f2) {
+        this.b(world, i, j, k, entityhuman);
+        return true;
+    }
+
+    public void attack(World world, int i, int j, int k, EntityHuman entityhuman) {
+        this.b(world, i, j, k, entityhuman);
+    }
+
+    private void b(World world, int i, int j, int k, EntityHuman entityhuman) {
+        if (entityhuman.g(false)) {
+            entityhuman.getFoodData().eat(2, 0.1F);
+            int l = world.getData(i, j, k) + 1;
+
+            if (l >= 6) {
+                world.setAir(i, j, k);
+            } else {
+                world.setData(i, j, k, l, 2);
+            }
+        }
+    }
+
+    public boolean canPlace(World world, int i, int j, int k) {
+        return !super.canPlace(world, i, j, k) ? false : this.f(world, i, j, k);
+    }
+
+    public void doPhysics(World world, int i, int j, int k, int l) {
+        if (!this.f(world, i, j, k)) {
+            world.setAir(i, j, k);
+        }
+    }
+
+    public boolean f(World world, int i, int j, int k) {
+        return world.getMaterial(i, j - 1, k).isBuildable();
+    }
+
+    public int a(Random random) {
+        return 0;
+    }
+
+    public int getDropType(int i, Random random, int j) {
+        return 0;
+    }
+}