1 files changed, 85 insertions, 2 deletions

diff --git a/src/main/java/net/minecraft/server/ItemStack.java b/src/main/java/net/minecraft/server/ItemStack.java
index 791467ba..bae352b2 100644
--- a/src/main/java/net/minecraft/server/ItemStack.java
+++ b/src/main/java/net/minecraft/server/ItemStack.java
@@ -6,7 +6,17 @@ import java.util.Random;
 import net.minecraft.util.com.google.common.collect.HashMultimap;
 import net.minecraft.util.com.google.common.collect.Multimap;
 
-import org.bukkit.craftbukkit.util.CraftMagicNumbers; // CraftBukkit
+// CraftBukkit start
+import java.util.List;
+
+import org.bukkit.Location;
+import org.bukkit.TreeType;
+import org.bukkit.block.BlockState;
+import org.bukkit.craftbukkit.block.CraftBlockState;
+import org.bukkit.craftbukkit.util.CraftMagicNumbers;
+import org.bukkit.entity.Player;
+import org.bukkit.event.world.StructureGrowEvent;
+// CraftBukkit end
 
 public final class ItemStack {
 
@@ -75,11 +85,84 @@ public final class ItemStack {
     }
 
     public boolean placeItem(EntityHuman entityhuman, World world, int i, int j, int k, int l, float f, float f1, float f2) {
+        // CraftBukkit start - handle all block place event logic here
+        int data = this.getData();
+        int count = this.count;
+
+        if (!(this.getItem() instanceof ItemBucket)) { // if not bucket
+            world.captureBlockStates = true;
+            // special case bonemeal
+            if (this.getItem() instanceof ItemDye && this.getData() == 15) {
+                Block block = world.getType(i, j, k);
+                if (block == Blocks.SAPLING || block instanceof BlockMushroom) {
+                    world.captureTreeGeneration = true;
+                }
+            }
+        }
         boolean flag = this.getItem().interactWith(this, entityhuman, world, i, j, k, l, f, f1, f2);
+        world.captureBlockStates = false;
+        if (flag && world.captureTreeGeneration && world.capturedBlockStates.size() > 0) {
+            world.captureTreeGeneration = false;
+            Location location = new Location(world.getWorld(), i, j, k);
+            TreeType treeType = BlockSapling.treeType;
+            BlockSapling.treeType = null;
+            List<BlockState> blocks = (List<BlockState>) world.capturedBlockStates.clone();
+            world.capturedBlockStates.clear();
+            StructureGrowEvent event = null;
+            if (treeType != null) {
+                event = new StructureGrowEvent(location, treeType, false, (Player) entityhuman.getBukkitEntity(), blocks);
+                org.bukkit.Bukkit.getPluginManager().callEvent(event);
+            }
+            if (event == null || !event.isCancelled()) {
+                for (BlockState blockstate : blocks) {
+                    blockstate.update(true);
+                }
+            }
+
+            return flag;
+        }
+        world.captureTreeGeneration = false;
 
         if (flag) {
-            entityhuman.a(StatisticList.USE_ITEM_COUNT[Item.b(this.item)], 1);
+            org.bukkit.event.block.BlockPlaceEvent placeEvent = null;
+            List<BlockState> blocks = (List<BlockState>) world.capturedBlockStates.clone();
+            world.capturedBlockStates.clear();
+            if (blocks.size() > 1) {
+                placeEvent = org.bukkit.craftbukkit.event.CraftEventFactory.callBlockMultiPlaceEvent(world, entityhuman, blocks, i, j, k);
+            } else if (blocks.size() == 1) {
+                placeEvent = org.bukkit.craftbukkit.event.CraftEventFactory.callBlockPlaceEvent(world, entityhuman, blocks.get(0), i, j, k);
+            }
+
+            if (placeEvent != null && (placeEvent.isCancelled() || !placeEvent.canBuild())) {
+                flag = false; // cancel placement
+                // revert back all captured blocks
+                for (BlockState blockstate : blocks) {
+                    blockstate.update(true, false);
+                }
+                // make sure to restore stack after cancel
+                this.setData(data);
+                this.count = count;
+            } else {
+                for (BlockState blockstate : blocks) {
+                    int x = blockstate.getX();
+                    int y = blockstate.getY();
+                    int z = blockstate.getZ();
+                    int updateFlag = ((CraftBlockState) blockstate).getFlag();
+                    org.bukkit.Material mat = blockstate.getType();
+                    Block oldBlock = CraftMagicNumbers.getBlock(mat);
+                    Block block = world.getType(x, y, z);
+
+                    if (block != null && !(block instanceof BlockContainer)) { // Containers get placed automatically
+                        block.onPlace(world, x, y, z);
+                    }
+
+                    world.notifyAndUpdatePhysics(x, y, z, null, oldBlock, block, updateFlag); // send null chunk as chunk.k() returns false by this point
+                }
+                entityhuman.a(StatisticList.USE_ITEM_COUNT[Item.b(this.item)], 1);
+            }
         }
+        world.capturedBlockStates.clear();
+        // CraftBukkit end
 
         return flag;
     }