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

--- ../src-base/minecraft/net/minecraft/world/Explosion.java
+++ ../src-work/minecraft/net/minecraft/world/Explosion.java
@@ -7,6 +7,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Random;
+
 import net.minecraft.block.Block;
 import net.minecraft.block.material.Material;
 import net.minecraft.enchantment.EnchantmentProtection;
@@ -15,11 +16,19 @@
 import net.minecraft.entity.item.EntityTNTPrimed;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.init.Blocks;
+import net.minecraft.server.MinecraftServer;
 import net.minecraft.util.AxisAlignedBB;
 import net.minecraft.util.DamageSource;
 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 +43,7 @@
     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 +58,12 @@
 
     public void doExplosionA()
     {
+        // CraftBukkit start
+        if (this.explosionSize < 0.1F)
+        {
+            return;
+        }
+        // CraftBukkit end
         float f = this.explosionSize;
         HashSet hashset = new HashSet();
         int i;
@@ -112,7 +128,14 @@
         int i2 = MathHelper.floor_double(this.explosionY + (double)this.explosionSize + 1.0D);
         int l = MathHelper.floor_double(this.explosionZ - (double)this.explosionSize - 1.0D);
         int j2 = MathHelper.floor_double(this.explosionZ + (double)this.explosionSize + 1.0D);
-        List list = this.worldObj.getEntitiesWithinAABBExcludingEntity(this.exploder, AxisAlignedBB.getBoundingBox((double)i, (double)k, (double)l, (double)j, (double)i2, (double)j2));
+        // PaperSpigot start - Fix lag from explosions processing dead entities
+        List list = this.worldObj.getEntitiesWithinAABBExcludingEntity(this.exploder, AxisAlignedBB.getBoundingBox((double)i, (double)k, (double)l, (double)j, (double)i2, (double)j2), new net.minecraft.command.IEntitySelector() {
+            @Override
+            public boolean isEntityApplicable(Entity entity) {
+                return !entity.isDead;
+            }
+        });
+        // PaperSpigot end
         net.minecraftforge.event.ForgeEventFactory.onExplosionDetonate(this.worldObj, this, list, this.explosionSize);
         Vec3 vec3 = Vec3.createVectorHelper(this.explosionX, this.explosionY, this.explosionZ);
 
@@ -135,7 +158,15 @@
                     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;
+                    }
+                    if (!MinecraftServer.cauldronConfig.allowTntPunishment.getValue()) continue;
+                    // CraftBukkit end
                     double d8 = EnchantmentProtection.func_92092_a(entity, d11);
                     entity.motionX += d5 * d8;
                     entity.motionY += d6 * d8;
@@ -174,6 +205,39 @@
 
         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 +273,8 @@
                 {
                     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 +297,12 @@
 
                 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
                 }
             }
         }