KCauldronX/patches/net/minecraft/world/Explosion.java.patch

--- ../src-base/minecraft/net/minecraft/world/Explosion.java
+++ ../src-work/minecraft/net/minecraft/world/Explosion.java
@@ -20,6 +20,12 @@
 import net.minecraft.util.MathHelper;
 import net.minecraft.util.Vec3;
 
+// CraftBukkit start
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.event.entity.EntityExplodeEvent;
+import org.bukkit.Location;
+// CraftBukkit end
+
 public class Explosion
 {
     public boolean isFlaming;
@@ -34,6 +40,7 @@
     public float explosionSize;
     public List affectedBlockPositions = new ArrayList();
     private Map field_77288_k = new HashMap();
+    public boolean wasCanceled = false; // CraftBukkit
     private static final String __OBFID = "CL_00000134";
 
     public Explosion(World p_i1948_1_, Entity p_i1948_2_, double p_i1948_3_, double p_i1948_5_, double p_i1948_7_, float p_i1948_9_)
@@ -48,6 +55,12 @@
 
     public void doExplosionA()
     {
+        // CraftBukkit start
+        if (this.explosionSize < 0.1F)
+        {
+            return;
+        }
+        // CraftBukkit end
         float f = this.explosionSize;
         HashSet hashset = new HashSet();
         int i;
@@ -135,7 +148,15 @@
                     d7 /= d9;
                     double d10 = (double)this.worldObj.getBlockDensity(vec3, entity.boundingBox);
                     double d11 = (1.0D - d4) * d10;
-                    entity.attackEntityFrom(DamageSource.setExplosionSource(this), (float)((int)((d11 * d11 + d11) / 2.0D * 8.0D * (double)this.explosionSize + 1.0D)));
+                    // CraftBukkit start
+                    CraftEventFactory.entityDamage = exploder;
+                    if (!entity.attackEntityFrom(DamageSource.setExplosionSource(this), (float) ((int) ((d11 * d11 + d11) / 2.0D * 8.0D
+                            * (double) this.explosionSize + 1.0D))))
+                    {
+                        CraftEventFactory.entityDamage = null;
+                        continue;
+                    }
+                    // CraftBukkit end
                     double d8 = EnchantmentProtection.func_92092_a(entity, d11);
                     entity.motionX += d5 * d8;
                     entity.motionY += d6 * d8;
@@ -174,6 +195,39 @@
 
         if (this.isSmoking)
         {
+            // CraftBukkit start
+            org.bukkit.World bworld = this.worldObj.getWorld();
+            org.bukkit.entity.Entity explode = this.exploder == null ? null : this.exploder.getBukkitEntity();
+            Location location = new Location(bworld, this.explosionX, this.explosionY, this.explosionZ);
+            List<org.bukkit.block.Block> blockList = new ArrayList<org.bukkit.block.Block>();
+
+            for (int i1 = this.affectedBlockPositions.size() - 1; i1 >= 0; i1--)
+            {
+                ChunkPosition cpos = (ChunkPosition) this.affectedBlockPositions.get(i1);
+                org.bukkit.block.Block bblock = bworld.getBlockAt(cpos.chunkPosX, cpos.chunkPosY, cpos.chunkPosZ);
+
+                if (bblock.getType() != org.bukkit.Material.AIR)
+                {
+                    blockList.add(bblock);
+                }
+            }
+
+            EntityExplodeEvent event = new EntityExplodeEvent(explode, location, blockList, 0.3F);
+            this.worldObj.getServer().getPluginManager().callEvent(event);
+            this.affectedBlockPositions.clear();
+
+            for (org.bukkit.block.Block bblock : event.blockList())
+            {
+                ChunkPosition coords = new ChunkPosition(bblock.getX(), bblock.getY(), bblock.getZ());
+                affectedBlockPositions.add(coords);
+            }
+
+            if (event.isCancelled())
+            {
+                this.wasCanceled = true;
+                return;
+            }
+            // CraftBukkit end
             iterator = this.affectedBlockPositions.iterator();
 
             while (iterator.hasNext())
@@ -209,7 +263,8 @@
                 {
                     if (block.canDropFromExplosion(this))
                     {
-                        block.dropBlockAsItemWithChance(this.worldObj, i, j, k, this.worldObj.getBlockMetadata(i, j, k), 1.0F / this.explosionSize, 0);
+                        // CraftBukkit - add yield
+                        block.dropBlockAsItemWithChance(this.worldObj, i, j, k, this.worldObj.getBlockMetadata(i, j, k), event.getYield(), 0);
                     }
 
                     block.onBlockExploded(this.worldObj, i, j, k, this);
@@ -232,7 +287,12 @@
 
                 if (block.getMaterial() == Material.air && block1.func_149730_j() && this.explosionRNG.nextInt(3) == 0)
                 {
-                    this.worldObj.setBlock(i, j, k, Blocks.fire);
+                    // CraftBukkit start - Ignition by explosion
+                    if (!org.bukkit.craftbukkit.event.CraftEventFactory.callBlockIgniteEvent(this.worldObj, i, j, k, this).isCancelled())
+                    {
+                        this.worldObj.setBlock(i, j, k, Blocks.fire);
+                    }
+                    // CraftBukkit end
                 }
             }
         }