diff --git a/src/main/java/net/minecraft/server/BlockDiode.java b/src/main/java/net/minecraft/server/BlockDiode.java
new file mode 100644
index 0000000000..2580d5d811
--- /dev/null
+++ b/src/main/java/net/minecraft/server/BlockDiode.java
@@ -0,0 +1,214 @@
+package net.minecraft.server;
+
+import java.util.Random;
+
+public class BlockDiode extends BlockDirectional {
+
+    public static final double[] a = new double[] { -0.0625D, 0.0625D, 0.1875D, 0.3125D};
+    private static final int[] b = new int[] { 1, 2, 3, 4};
+    private final boolean c;
+
+    protected BlockDiode(int i, boolean flag) {
+        super(i, 6, Material.ORIENTABLE);
+        this.c = flag;
+        this.a(0.0F, 0.0F, 0.0F, 1.0F, 0.125F, 1.0F);
+    }
+
+    public boolean b() {
+        return false;
+    }
+
+    public boolean canPlace(World world, int i, int j, int k) {
+        return !world.v(i, j - 1, k) ? false : super.canPlace(world, i, j, k);
+    }
+
+    public boolean d(World world, int i, int j, int k) {
+        return !world.v(i, j - 1, k) ? false : super.d(world, i, j, k);
+    }
+
+    public void b(World world, int i, int j, int k, Random random) {
+        int l = world.getData(i, j, k);
+        boolean flag = this.e(world, i, j, k, l);
+
+        if (!flag) {
+            boolean flag1 = this.i(world, i, j, k, l);
+
+            if (this.c && !flag1) {
+                world.setTypeIdAndData(i, j, k, Block.DIODE_OFF.id, l);
+            } else if (!this.c) {
+                world.setTypeIdAndData(i, j, k, Block.DIODE_ON.id, l);
+                if (!flag1) {
+                    int i1 = (l & 12) >> 2;
+
+                    world.a(i, j, k, Block.DIODE_ON.id, b[i1] * 2);
+                }
+            }
+        }
+    }
+
+    public int a(int i, int j) {
+        return i == 0 ? (this.c ? 99 : 115) : (i == 1 ? (this.c ? 147 : 131) : 5);
+    }
+
+    public int d() {
+        return 15;
+    }
+
+    public int a(int i) {
+        return this.a(i, 0);
+    }
+
+    public boolean c(IBlockAccess iblockaccess, int i, int j, int k, int l) {
+        return this.b(iblockaccess, i, j, k, l);
+    }
+
+    public boolean b(IBlockAccess iblockaccess, int i, int j, int k, int l) {
+        if (!this.c) {
+            return false;
+        } else {
+            int i1 = e(iblockaccess.getData(i, j, k));
+
+            return i1 == 0 && l == 3 ? true : (i1 == 1 && l == 4 ? true : (i1 == 2 && l == 2 ? true : i1 == 3 && l == 5));
+        }
+    }
+
+    public void doPhysics(World world, int i, int j, int k, int l) {
+        if (!this.d(world, i, j, k)) {
+            this.c(world, i, j, k, world.getData(i, j, k), 0);
+            world.setTypeId(i, j, k, 0);
+            world.applyPhysics(i + 1, j, k, this.id);
+            world.applyPhysics(i - 1, j, k, this.id);
+            world.applyPhysics(i, j, k + 1, this.id);
+            world.applyPhysics(i, j, k - 1, this.id);
+            world.applyPhysics(i, j - 1, k, this.id);
+            world.applyPhysics(i, j + 1, k, this.id);
+        } else {
+            int i1 = world.getData(i, j, k);
+            boolean flag = this.e(world, i, j, k, i1);
+
+            if (!flag) {
+                boolean flag1 = this.i(world, i, j, k, i1);
+                int j1 = (i1 & 12) >> 2;
+
+                if (this.c && !flag1 || !this.c && flag1) {
+                    byte b0 = 0;
+
+                    if (this.d(world, i, j, k, i1)) {
+                        b0 = -1;
+                    }
+
+                    world.a(i, j, k, this.id, b[j1] * 2, b0);
+                }
+            }
+        }
+    }
+
+    private boolean i(World world, int i, int j, int k, int l) {
+        int i1 = e(l);
+
+        switch (i1) {
+        case 0:
+            return world.isBlockFaceIndirectlyPowered(i, j, k + 1, 3) || world.getTypeId(i, j, k + 1) == Block.REDSTONE_WIRE.id && world.getData(i, j, k + 1) > 0;
+
+        case 1:
+            return world.isBlockFaceIndirectlyPowered(i - 1, j, k, 4) || world.getTypeId(i - 1, j, k) == Block.REDSTONE_WIRE.id && world.getData(i - 1, j, k) > 0;
+
+        case 2:
+            return world.isBlockFaceIndirectlyPowered(i, j, k - 1, 2) || world.getTypeId(i, j, k - 1) == Block.REDSTONE_WIRE.id && world.getData(i, j, k - 1) > 0;
+
+        case 3:
+            return world.isBlockFaceIndirectlyPowered(i + 1, j, k, 5) || world.getTypeId(i + 1, j, k) == Block.REDSTONE_WIRE.id && world.getData(i + 1, j, k) > 0;
+
+        default:
+            return false;
+        }
+    }
+
+    public boolean e(IBlockAccess iblockaccess, int i, int j, int k, int l) {
+        int i1 = e(l);
+
+        switch (i1) {
+        case 0:
+        case 2:
+            return iblockaccess.isBlockFacePowered(i - 1, j, k, 4) && c(iblockaccess.getTypeId(i - 1, j, k)) || iblockaccess.isBlockFacePowered(i + 1, j, k, 5) && c(iblockaccess.getTypeId(i + 1, j, k));
+
+        case 1:
+        case 3:
+            return iblockaccess.isBlockFacePowered(i, j, k + 1, 3) && c(iblockaccess.getTypeId(i, j, k + 1)) || iblockaccess.isBlockFacePowered(i, j, k - 1, 2) && c(iblockaccess.getTypeId(i, j, k - 1));
+
+        default:
+            return false;
+        }
+    }
+
+    public boolean interact(World world, int i, int j, int k, EntityHuman entityhuman, int l, float f, float f1, float f2) {
+        int i1 = world.getData(i, j, k);
+        int j1 = (i1 & 12) >> 2;
+
+        j1 = j1 + 1 << 2 & 12;
+        world.setData(i, j, k, j1 | i1 & 3);
+        return true;
+    }
+
+    public boolean isPowerSource() {
+        return true;
+    }
+
+    public void postPlace(World world, int i, int j, int k, EntityLiving entityliving) {
+        int l = ((MathHelper.floor((double) (entityliving.yaw * 4.0F / 360.0F) + 0.5D) & 3) + 2) % 4;
+
+        world.setData(i, j, k, l);
+        boolean flag = this.i(world, i, j, k, l);
+
+        if (flag) {
+            world.a(i, j, k, this.id, 1);
+        }
+    }
+
+    public void onPlace(World world, int i, int j, int k) {
+        world.applyPhysics(i + 1, j, k, this.id);
+        world.applyPhysics(i - 1, j, k, this.id);
+        world.applyPhysics(i, j, k + 1, this.id);
+        world.applyPhysics(i, j, k - 1, this.id);
+        world.applyPhysics(i, j - 1, k, this.id);
+        world.applyPhysics(i, j + 1, k, this.id);
+    }
+
+    public void postBreak(World world, int i, int j, int k, int l) {
+        if (this.c) {
+            world.applyPhysics(i + 1, j, k, this.id);
+            world.applyPhysics(i - 1, j, k, this.id);
+            world.applyPhysics(i, j, k + 1, this.id);
+            world.applyPhysics(i, j, k - 1, this.id);
+            world.applyPhysics(i, j - 1, k, this.id);
+            world.applyPhysics(i, j + 1, k, this.id);
+        }
+
+        super.postBreak(world, i, j, k, l);
+    }
+
+    public boolean c() {
+        return false;
+    }
+
+    public int getDropType(int i, Random random, int j) {
+        return Item.DIODE.id;
+    }
+
+    public static boolean c(int i) {
+        return i == Block.DIODE_ON.id || i == Block.DIODE_OFF.id;
+    }
+
+    public boolean d(World world, int i, int j, int k, int l) {
+        int i1 = e(l);
+
+        if (c(world.getTypeId(i - Direction.a[i1], j, k - Direction.b[i1]))) {
+            int j1 = world.getData(i - Direction.a[i1], j, k - Direction.b[i1]);
+            int k1 = e(j1);
+
+            return k1 != i1;
+        } else {
+            return false;
+        }
+    }
+}