3 files changed, 47 insertions, 4 deletions
diff --git a/src/main/java/net/minecraft/server/EntityEnderDragon.java b/src/main/java/net/minecraft/server/EntityEnderDragon.java
index 2897ab4f..a6537562 100644
--- a/src/main/java/net/minecraft/server/EntityEnderDragon.java
+++ b/src/main/java/net/minecraft/server/EntityEnderDragon.java
@@ -1,11 +1,17 @@
 package net.minecraft.server;
 
+import java.util.Iterator;
+import java.util.List;
+
+// CraftBukkit start
 import org.bukkit.Bukkit;
+import org.bukkit.craftbukkit.CraftWorld;
 import org.bukkit.event.entity.EntityDamageByEntityEvent;
 import org.bukkit.event.entity.EntityDamageEvent;
+import org.bukkit.event.entity.EntityExplodeEvent;
 
-import java.util.Iterator;
-import java.util.List;
+import java.util.ArrayList;
+// CraftBukkit end
 
 public class EntityEnderDragon extends EntityComplex {
 
@@ -455,6 +461,10 @@ public class EntityEnderDragon extends EntityComplex {
         boolean flag = false;
         boolean flag1 = false;
 
+        // CraftBukkit start - create a list to hold all the destroyed blocks
+        List<org.bukkit.block.Block> destroyedBlocks = new ArrayList<org.bukkit.block.Block>();
+        CraftWorld craftWorld = this.world.getWorld();
+        // CraftBukkit end
         for (int k1 = i; k1 <= l; ++k1) {
             for (int l1 = j; l1 <= i1; ++l1) {
                 for (int i2 = k; i2 <= j1; ++i2) {
@@ -463,7 +473,10 @@ public class EntityEnderDragon extends EntityComplex {
                     if (j2 != 0) {
                         if (j2 != Block.OBSIDIAN.id && j2 != Block.WHITESTONE.id && j2 != Block.BEDROCK.id) {
                             flag1 = true;
-                            this.world.setTypeId(k1, l1, i2, 0);
+                            // CraftBukkit start - add blocks to list rather than destroying them
+                            //this.world.setTypeId(k1, l1, i2, 0);
+                            destroyedBlocks.add(craftWorld.getBlockAt(k1, l1, i2));
+                            // CraftBukkit end
                         } else {
                             flag = true;
                         }
@@ -473,6 +486,19 @@ public class EntityEnderDragon extends EntityComplex {
         }
 
         if (flag1) {
+            // CraftBukkit start - set off an EntityExplodeEvent for the dragon exploding all these blocks
+            org.bukkit.entity.Entity bukkitEntity = this.getBukkitEntity();
+            EntityExplodeEvent event = new EntityExplodeEvent(bukkitEntity, bukkitEntity.getLocation(), destroyedBlocks, 0F);
+            if (event.isCancelled()) {
+                 // this flag literally means 'Dragon hit something hard' (Obsidian, White Stone or Bedrock) and will  cause the dragon to slow down.
+                 // We should consider adding an event extension for it, or perhaps returning true if the event is cancelled.
+                return flag;
+            } else {
+                for (org.bukkit.block.Block block : event.blockList()) {
+                    craftWorld.explodeBlock(block, event.getYield());
+                }
+            }
+            // CraftBukkit end
             double d0 = axisalignedbb.a + (axisalignedbb.d - axisalignedbb.a) * (double) this.random.nextFloat();
             double d1 = axisalignedbb.b + (axisalignedbb.e - axisalignedbb.b) * (double) this.random.nextFloat();
             double d2 = axisalignedbb.c + (axisalignedbb.f - axisalignedbb.c) * (double) this.random.nextFloat();
diff --git a/src/main/java/net/minecraft/server/Explosion.java b/src/main/java/net/minecraft/server/Explosion.java
index 739f1f49..7ceb116f 100644
--- a/src/main/java/net/minecraft/server/Explosion.java
+++ b/src/main/java/net/minecraft/server/Explosion.java
@@ -185,7 +185,7 @@ public class Explosion {
             }
         }
 
-        EntityExplodeEvent event = new EntityExplodeEvent(explode, location, blockList);
+        EntityExplodeEvent event = new EntityExplodeEvent(explode, location, blockList, 0.3F);
         this.world.getServer().getPluginManager().callEvent(event);
 
         arraylist.clear();
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 0740b302..334930f6 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -895,4 +895,21 @@ public class CraftWorld implements World {
     public File getWorldFolder() {
         return ((WorldNBTStorage)world.getDataManager()).getDirectory();
     }
+
+    public void explodeBlock(Block block, float yield) {
+        // First of all, don't explode fire
+        if (block.getType().equals(Material.FIRE)) {
+            return;
+        }
+        int blockId = block.getTypeId();
+        int blockX = block.getX();
+        int blockY = block.getY();
+        int blockZ = block.getZ();
+        // following code is lifted from Explosion.a(boolean), and modified
+        net.minecraft.server.Block.byId[blockId].dropNaturally(this.world, blockX, blockY, blockZ, block.getData(), yield, 0);
+        block.setType(org.bukkit.Material.AIR);
+        // not sure what this does, seems to have something to do with the 'base' material of a block.
+        // For example, WOODEN_STAIRS does something with WOOD in this method
+        net.minecraft.server.Block.byId[blockId].a_(this.world, blockX, blockY, blockZ);
+    }
 }