Added BlockSpread, BlockForm and BlockFade events.

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

@@ -0,0 +1,51 @@
+package net.minecraft.server;
+
+import java.util.Random;
+
+// CraftBukkit start
+import org.bukkit.block.BlockState;
+import org.bukkit.craftbukkit.CraftServer;
+import org.bukkit.craftbukkit.CraftWorld;
+import org.bukkit.event.block.BlockFadeEvent;
+// CraftBukkit end
+
+public class BlockIce extends BlockBreakable {
+
+    public BlockIce(int i, int j) {
+        super(i, j, Material.ICE, false);
+        this.frictionFactor = 0.98F;
+        this.a(true);
+    }
+
+    public void remove(World world, int i, int j, int k) {
+        Material material = world.getMaterial(i, j - 1, k);
+
+        if (material.isSolid() || material.isLiquid()) {
+            world.setTypeId(i, j, k, Block.WATER.id);
+        }
+    }
+
+    public int a(Random random) {
+        return 0;
+    }
+
+    public void a(World world, int i, int j, int k, Random random) {
+        if (world.a(EnumSkyBlock.BLOCK, i, j, k) > 11 - Block.q[this.id]) {
+            // CraftBukkit start
+            CraftServer server = world.getServer();
+            CraftWorld cworld = world.getWorld();
+            BlockState blockState = cworld.getBlockAt(i, j, k).getState();
+            blockState.setTypeId(this.id);
+
+            BlockFadeEvent event = new BlockFadeEvent(cworld.getBlockAt(i, j, k), blockState);
+            server.getPluginManager().callEvent(event);
+            if (event.isCancelled()) {
+                return;
+            }
+            // CraftBukkit end
+
+            this.b_(world, i, j, k, world.getData(i, j, k));
+            world.setTypeId(i, j, k, Block.STATIONARY_WATER.id);
+        }
+    }
+}

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

@@ -0,0 +1,60 @@
+package net.minecraft.server;
+
+import java.util.Random;
+
+// CraftBukkit start
+import org.bukkit.Location;
+import org.bukkit.Server;
+import org.bukkit.block.BlockState;
+import org.bukkit.craftbukkit.CraftWorld;
+import org.bukkit.event.block.BlockSpreadEvent;
+// CraftBukkit end
+
+public class BlockMushroom extends BlockFlower {
+
+    protected BlockMushroom(int i, int j) {
+        super(i, j);
+        float f = 0.2F;
+
+        this.a(0.5F - f, 0.0F, 0.5F - f, 0.5F + f, f * 2.0F, 0.5F + f);
+        this.a(true);
+    }
+
+    public void a(World world, int i, int j, int k, Random random) {
+        if (random.nextInt(100) == 0) {
+            int l = i + random.nextInt(3) - 1;
+            int i1 = j + random.nextInt(2) - random.nextInt(2);
+            int j1 = k + random.nextInt(3) - 1;
+
+            if (world.isEmpty(l, i1, j1) && this.f(world, l, i1, j1)) {
+                int k1 = i + (random.nextInt(3) - 1);
+
+                k1 = k + (random.nextInt(3) - 1);
+                if (world.isEmpty(l, i1, j1) && this.f(world, l, i1, j1)) {
+                    // CraftBukkit start
+                    Server server = world.getServer();
+                    CraftWorld craftworld = world.getWorld();
+                    BlockState blockState = craftworld.getBlockAt(l, i1, j1).getState();
+                    blockState.setTypeId(this.id);
+
+                    BlockSpreadEvent event = new BlockSpreadEvent(craftworld.getBlockAt(l, i1, j1), craftworld.getBlockAt(i, j, k), blockState);
+
+                    server.getPluginManager().callEvent(event);
+
+                    if (!event.isCancelled()) {
+                        blockState.update(true);
+                    }
+                    // CraftBukkit end
+                }
+            }
+        }
+    }
+
+    protected boolean c(int i) {
+        return Block.o[i];
+    }
+
+    public boolean f(World world, int i, int j, int k) {
+        return j >= 0 && j < 128 ? world.j(i, j, k) < 13 && this.c(world.getTypeId(i, j - 1, k)) : false;
+    }
+}

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

@@ -0,0 +1,102 @@
+package net.minecraft.server;
+
+import java.util.Random;
+
+// CraftBukkit start
+import org.bukkit.block.BlockState;
+import org.bukkit.craftbukkit.CraftServer;
+import org.bukkit.craftbukkit.CraftWorld;
+import org.bukkit.event.block.BlockFadeEvent;
+// CraftBukkit end
+
+public class BlockSnow extends Block {
+
+    protected BlockSnow(int i, int j) {
+        super(i, j, Material.SNOW_LAYER);
+        this.a(0.0F, 0.0F, 0.0F, 1.0F, 0.125F, 1.0F);
+        this.a(true);
+    }
+
+    public AxisAlignedBB d(World world, int i, int j, int k) {
+        int l = world.getData(i, j, k) & 7;
+
+        return l >= 3 ? AxisAlignedBB.b((double) i + this.minX, (double) j + this.minY, (double) k + this.minZ, (double) i + this.maxX, (double) ((float) j + 0.5F), (double) k + this.maxZ) : null;
+    }
+
+    public boolean a() {
+        return false;
+    }
+
+    public boolean b() {
+        return false;
+    }
+
+    public void a(IBlockAccess iblockaccess, int i, int j, int k) {
+        int l = iblockaccess.getData(i, j, k) & 7;
+        float f = (float) (2 * (1 + l)) / 16.0F;
+
+        this.a(0.0F, 0.0F, 0.0F, 1.0F, f, 1.0F);
+    }
+
+    public boolean canPlace(World world, int i, int j, int k) {
+        int l = world.getTypeId(i, j - 1, k);
+
+        return l != 0 && Block.byId[l].a() ? world.getMaterial(i, j - 1, k).isSolid() : false;
+    }
+
+    public void doPhysics(World world, int i, int j, int k, int l) {
+        this.g(world, i, j, k);
+    }
+
+    private boolean g(World world, int i, int j, int k) {
+        if (!this.canPlace(world, i, j, k)) {
+            this.b_(world, i, j, k, world.getData(i, j, k));
+            world.setTypeId(i, j, k, 0);
+            return false;
+        } else {
+            return true;
+        }
+    }
+
+    public void a(World world, EntityHuman entityhuman, int i, int j, int k, int l) {
+        int i1 = Item.SNOW_BALL.id;
+        float f = 0.7F;
+        double d0 = (double) (world.random.nextFloat() * f) + (double) (1.0F - f) * 0.5D;
+        double d1 = (double) (world.random.nextFloat() * f) + (double) (1.0F - f) * 0.5D;
+        double d2 = (double) (world.random.nextFloat() * f) + (double) (1.0F - f) * 0.5D;
+        EntityItem entityitem = new EntityItem(world, (double) i + d0, (double) j + d1, (double) k + d2, new ItemStack(i1, 1, 0));
+
+        entityitem.pickupDelay = 10;
+        world.addEntity(entityitem);
+        world.setTypeId(i, j, k, 0);
+        entityhuman.a(StatisticList.C[this.id], 1);
+    }
+
+    public int a(int i, Random random) {
+        return Item.SNOW_BALL.id;
+    }
+
+    public int a(Random random) {
+        return 0;
+    }
+
+    public void a(World world, int i, int j, int k, Random random) {
+        if (world.a(EnumSkyBlock.BLOCK, i, j, k) > 11) {
+            // CraftBukkit start
+            CraftServer server = world.getServer();
+            CraftWorld cworld = world.getWorld();
+            BlockState blockState = cworld.getBlockAt(i, j, k).getState();
+            blockState.setTypeId(this.id);
+
+            BlockFadeEvent event = new BlockFadeEvent(cworld.getBlockAt(i, j, k), blockState);
+            server.getPluginManager().callEvent(event);
+            if (event.isCancelled()) {
+                return;
+            }
+            // CraftBukkit end
+
+            this.b_(world, i, j, k, world.getData(i, j, k));
+            world.setTypeId(i, j, k, 0);
+        }
+    }
+}

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

@@ -19,10 +19,13 @@ import org.bukkit.craftbukkit.event.CraftEventFactory;
 import org.bukkit.event.block.BlockCanBuildEvent;
 import org.bukkit.event.block.BlockPhysicsEvent;
 import org.bukkit.event.block.SnowFormEvent;
+import org.bukkit.event.block.BlockFormEvent;
 import org.bukkit.event.entity.CreatureSpawnEvent;
 import org.bukkit.event.entity.ItemSpawnEvent;
 import org.bukkit.event.weather.WeatherChangeEvent;
 import org.bukkit.event.weather.ThunderChangeEvent;
+import org.bukkit.block.BlockState;
+import org.bukkit.craftbukkit.block.CraftBlockState;
 // CraftBukkit end
 
 public class World implements IBlockAccess {
@@ -1830,7 +1833,7 @@ public class World implements IBlockAccess {
                     i2 = chunk.getTypeId(l, k1, j1);
                     if (this.v() && i2 == 0 && Block.SNOW.canPlace(this, l + i, k1, j1 + j) && l1 != 0 && l1 != Block.ICE.id && Block.byId[l1].material.isSolid()) {
                         // CraftBukkit start
-                        SnowFormEvent snow = new SnowFormEvent(((WorldServer) this).getWorld().getBlockAt(l + i, k1, j1 + j));
+                        SnowFormEvent snow = new SnowFormEvent(this.getWorld().getBlockAt(l + i, k1, j1 + j));
 
                         getServer().getPluginManager().callEvent(snow);
                         if (!snow.isCancelled()) {
@@ -1840,9 +1843,18 @@ public class World implements IBlockAccess {
                         // CraftBukkit end
                     }
 
-                    if (l1 == Block.STATIONARY_WATER.id && chunk.getData(l, k1 - 1, j1) == 0) {
-                        this.setTypeId(l + i, k1 - 1, j1 + j, Block.ICE.id);
+                    // CraftBukkit start
+                        if (l1 == Block.STATIONARY_WATER.id && chunk.getData(l, k1 - 1, j1) == 0) {
+                            BlockState blockState = this.getWorld().getBlockAt(l + i, k1 - 1, j1 + j).getState();
+                            blockState.setTypeId(Block.ICE.id);
+
+                            BlockFormEvent iceBlockForm = new BlockFormEvent(this.getWorld().getBlockAt(l + i, k1 - 1, j1 + j), blockState);
+                            this.getServer().getPluginManager().callEvent(iceBlockForm);
+                            if (!iceBlockForm.isCancelled()) {
+                                blockState.update(true);
+                            }
                     }
+                    // CraftBukkit end
                 }
             }