KCauldron-minecraft-server/patches/net/minecraft/entity/EntityHanging.java.patch

--- ../src-base/minecraft/net/minecraft/entity/EntityHanging.java
+++ ../src-work/minecraft/net/minecraft/entity/EntityHanging.java
@@ -10,6 +10,14 @@
 import net.minecraft.util.MathHelper;
 import net.minecraft.world.World;
 
+// CraftBukkit start
+import net.minecraft.entity.item.EntityPainting;
+import org.bukkit.entity.Hanging;
+import org.bukkit.entity.Painting;
+import org.bukkit.event.hanging.HangingBreakEvent;
+import org.bukkit.event.painting.PaintingBreakEvent;
+// CraftBukkit end
+
 public abstract class EntityHanging extends Entity
 {
     private int tickCounter1;
@@ -125,6 +133,38 @@
 
             if (!this.isDead && !this.onValidSurface())
             {
+                // CraftBukkit start
+                Material material = this.worldObj.getBlock((int) this.posX, (int) this.posY, (int) this.posZ).getMaterial();
+                HangingBreakEvent.RemoveCause cause;
+
+                if (!material.equals(Material.air))
+                {
+                    // TODO: This feels insufficient to catch 100% of suffocation cases
+                    cause = HangingBreakEvent.RemoveCause.OBSTRUCTION;
+                }
+                else
+                {
+                    cause = HangingBreakEvent.RemoveCause.PHYSICS;
+                }
+
+                HangingBreakEvent event = new HangingBreakEvent((Hanging) this.getBukkitEntity(), cause);
+                this.worldObj.getServer().getPluginManager().callEvent(event);
+                PaintingBreakEvent paintingEvent = null;
+
+                if (this instanceof EntityPainting)
+                {
+                    // Fire old painting event until it can be removed
+                    paintingEvent = new PaintingBreakEvent((Painting) this.getBukkitEntity(), PaintingBreakEvent.RemoveCause.valueOf(cause.name()));
+                    paintingEvent.setCancelled(event.isCancelled());
+                    this.worldObj.getServer().getPluginManager().callEvent(paintingEvent);
+                }
+
+                if (isDead || event.isCancelled() || (paintingEvent != null && paintingEvent.isCancelled()))
+                {
+                    return;
+                }
+
+                // CraftBukkit end
                 this.setDead();
                 this.onBroken((Entity)null);
             }
@@ -233,6 +273,39 @@
         {
             if (!this.isDead && !this.worldObj.isRemote)
             {
+                // CraftBukkit start
+                HangingBreakEvent event = new HangingBreakEvent((Hanging) this.getBukkitEntity(), HangingBreakEvent.RemoveCause.DEFAULT);
+                PaintingBreakEvent paintingEvent = null;
+
+                if (p_70097_1_.getEntity() != null)
+                {
+                    event = new org.bukkit.event.hanging.HangingBreakByEntityEvent((Hanging) this.getBukkitEntity(), p_70097_1_.getEntity() == null ? null : p_70097_1_.getEntity().getBukkitEntity());
+
+                    if (this instanceof EntityPainting)
+                    {
+                        // Fire old painting event until it can be removed
+                        paintingEvent = new org.bukkit.event.painting.PaintingBreakByEntityEvent((Painting) this.getBukkitEntity(), p_70097_1_.getEntity() == null ? null : p_70097_1_.getEntity().getBukkitEntity());
+                    }
+                }
+                else if (p_70097_1_.isExplosion())
+                {
+                    event = new HangingBreakEvent((Hanging) this.getBukkitEntity(), HangingBreakEvent.RemoveCause.EXPLOSION);
+                }
+
+                this.worldObj.getServer().getPluginManager().callEvent(event);
+
+                if (paintingEvent != null)
+                {
+                    paintingEvent.setCancelled(event.isCancelled());
+                    this.worldObj.getServer().getPluginManager().callEvent(paintingEvent);
+                }
+
+                if (this.isDead || event.isCancelled() || (paintingEvent != null && paintingEvent.isCancelled()))
+                {
+                    return true;
+                }
+
+                // CraftBukkit end
                 this.setDead();
                 this.setBeenAttacked();
                 this.onBroken(p_70097_1_.getEntity());
@@ -246,6 +319,22 @@
     {
         if (!this.worldObj.isRemote && !this.isDead && p_70091_1_ * p_70091_1_ + p_70091_3_ * p_70091_3_ + p_70091_5_ * p_70091_5_ > 0.0D)
         {
+            if (this.isDead)
+            {
+                return;    // CraftBukkit
+            }
+
+            // CraftBukkit start
+            // TODO - Does this need its own cause? Seems to only be triggered by pistons
+            HangingBreakEvent event = new HangingBreakEvent((Hanging) this.getBukkitEntity(), HangingBreakEvent.RemoveCause.PHYSICS);
+            this.worldObj.getServer().getPluginManager().callEvent(event);
+
+            if (this.isDead || event.isCancelled())
+            {
+                return;
+            }
+
+            // CraftBukkit end
             this.setDead();
             this.onBroken((Entity)null);
         }