Fire BlockPlace event when placing a lilypad, Thanks DiddiZ; Fixes BUKKIT-162

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

@@ -0,0 +1,57 @@
+package net.minecraft.server;
+
+// CraftBukkit start
+import org.bukkit.craftbukkit.block.CraftBlockState;
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.event.block.BlockPlaceEvent;
+// CraftBukkit end
+
+public class ItemWaterLily extends ItemColoredBlock {
+
+    public ItemWaterLily(int i) {
+        super(i, false);
+    }
+
+    public ItemStack a(ItemStack itemstack, World world, EntityHuman entityhuman) {
+        MovingObjectPosition movingobjectposition = this.a(world, entityhuman, true);
+
+        if (movingobjectposition == null) {
+            return itemstack;
+        } else {
+            if (movingobjectposition.type == EnumMovingObjectType.TILE) {
+                int i = movingobjectposition.b;
+                int j = movingobjectposition.c;
+                int k = movingobjectposition.d;
+
+                if (!world.a(entityhuman, i, j, k)) {
+                    return itemstack;
+                }
+
+                if (!entityhuman.d(i, j, k)) {
+                    return itemstack;
+                }
+
+                if (world.getMaterial(i, j, k) == Material.WATER && world.getData(i, j, k) == 0 && world.isEmpty(i, j + 1, k)) {
+                    CraftBlockState blockState = CraftBlockState.getBlockState(world, i, j + 1, k); // CraftBukkit
+
+                    world.setTypeId(i, j + 1, k, Block.WATER_LILY.id);
+
+                    // CraftBukkit start - waterlily
+                    BlockPlaceEvent event = CraftEventFactory.callBlockPlaceEvent(world, entityhuman, blockState, i, j, k, Block.WATER_LILY.id);
+
+                    if (event.isCancelled() || !event.canBuild()) {
+                        event.getBlockPlaced().setTypeId(0);
+                        return itemstack;
+                    }
+                    // CraftBukkit end
+
+                    if (!entityhuman.abilities.canInstantlyBuild) {
+                        --itemstack.count;
+                    }
+                }
+            }
+
+            return itemstack;
+        }
+    }
+}