Explosion damage entity hook.

2 files changed, 227 insertions, 2 deletions

diff --git a/src/main/java/net/minecraft/server/BlockCactus.java b/src/main/java/net/minecraft/server/BlockCactus.java
index fb4d56ec..9a4d7b5b 100644
--- a/src/main/java/net/minecraft/server/BlockCactus.java
+++ b/src/main/java/net/minecraft/server/BlockCactus.java
@@ -4,7 +4,9 @@ import org.bukkit.LivingEntity;
 import org.bukkit.craftbukkit.CraftBlock;
 import org.bukkit.craftbukkit.CraftEntity;
 import org.bukkit.craftbukkit.CraftLivingEntity;
+import org.bukkit.craftbukkit.CraftPlayer;
 import org.bukkit.event.entity.EntityDamagedByBlockEvent;
+import org.bukkit.event.entity.EntityDamagedEvent;
 
 import java.util.Random;
 
@@ -93,13 +95,16 @@ public class BlockCactus extends Block {
     public void a(World world, int i, int j, int k, Entity entity) {
         // Craftbukkit: ENTITY_DAMAGEBY_BLOCK event
         CraftEntity toPassIn = null;
-        if(entity instanceof EntityLiving)
+        if(entity instanceof EntityPlayerMP)
+        {
+            toPassIn = new CraftPlayer(((WorldServer)world).getServer(), (EntityPlayerMP)entity);
+        } else if(entity instanceof EntityLiving)
         {
             toPassIn = new CraftLivingEntity(((WorldServer)world).getServer(), (EntityLiving)entity);
         }
         if(toPassIn != null)
         {
-            EntityDamagedByBlockEvent edbbe = new EntityDamagedByBlockEvent(((WorldServer)world).getWorld().getBlockAt(i, j, k), toPassIn, 1);
+            EntityDamagedByBlockEvent edbbe = new EntityDamagedByBlockEvent(((WorldServer)world).getWorld().getBlockAt(i, j, k), toPassIn, EntityDamagedEvent.DamageCause.CONTACT, 1);
             ((WorldServer)world).getServer().getPluginManager().callEvent(edbbe);
             if(edbbe.isCancelled()) return;
         }
diff --git a/src/main/java/net/minecraft/server/Explosion.java b/src/main/java/net/minecraft/server/Explosion.java
new file mode 100644
index 00000000..b7fb4574
--- /dev/null
+++ b/src/main/java/net/minecraft/server/Explosion.java
@@ -0,0 +1,220 @@
+package net.minecraft.server;
+
+
+import org.bukkit.craftbukkit.CraftEntity;
+import org.bukkit.craftbukkit.CraftLivingEntity;
+import org.bukkit.craftbukkit.CraftPlayer;
+import org.bukkit.craftbukkit.CraftServer;
+import org.bukkit.event.entity.EntityDamagedByBlockEvent;
+import org.bukkit.event.entity.EntityDamagedByEntityEvent;
+import org.bukkit.event.entity.EntityDamagedEvent;
+
+import java.util.*;
+
+
+public class Explosion {
+
+    public boolean a;
+    private Random h;
+    private World i;
+    public double b;
+    public double c;
+    public double d;
+    public Entity e;
+    public float f;
+    public Set g;
+
+    public Explosion(World world, Entity entity, double d1, double d2, double d3, float f1) {
+        a = false;
+        h = new Random();
+        g = new HashSet();
+        i = world;
+        e = entity;
+        f = f1;
+        b = d1;
+        c = d2;
+        d = d3;
+    }
+
+    public void a() {
+        float f1 = f;
+        int j = 16;
+
+        for (int k = 0; k < j; k++) {
+            for (int i1 = 0; i1 < j; i1++) {
+                label0:
+                for (int k1 = 0; k1 < j; k1++) {
+                    if (k != 0 && k != j - 1 && i1 != 0 && i1 != j - 1 && k1 != 0 && k1 != j - 1) {
+                        continue;
+                    }
+                    double d1 = ((float) k / ((float) j - 1.0F)) * 2.0F - 1.0F;
+                    double d2 = ((float) i1 / ((float) j - 1.0F)) * 2.0F - 1.0F;
+                    double d3 = ((float) k1 / ((float) j - 1.0F)) * 2.0F - 1.0F;
+                    double d4 = Math.sqrt(d1 * d1 + d2 * d2 + d3 * d3);
+
+                    d1 /= d4;
+                    d2 /= d4;
+                    d3 /= d4;
+                    float f2 = f * (0.7F + i.l.nextFloat() * 0.6F);
+                    double d5 = b;
+                    double d7 = c;
+                    double d9 = d;
+                    float f3 = 0.3F;
+
+                    do {
+                        if (f2 <= 0.0F) {
+                            continue label0;
+                        }
+                        int j2 = MathHelper.b(d5);
+                        int k2 = MathHelper.b(d7);
+                        int l2 = MathHelper.b(d9);
+                        int i3 = i.a(j2, k2, l2);
+
+                        if (i3 > 0) {
+                            f2 -= (Block.m[i3].a(e) + 0.3F) * f3;
+                        }
+                        if (f2 > 0.0F) {
+                            g.add(new ChunkPosition(j2, k2, l2));
+                        }
+                        d5 += d1 * (double) f3;
+                        d7 += d2 * (double) f3;
+                        d9 += d3 * (double) f3;
+                        f2 -= f3 * 0.75F;
+                    } while (true);
+                }
+
+            }
+
+        }
+
+        f *= 2.0F;
+        int l = MathHelper.b(b - (double) f - 1.0D);
+        int j1 = MathHelper.b(b + (double) f + 1.0D);
+        int l1 = MathHelper.b(c - (double) f - 1.0D);
+        int j3 = MathHelper.b(c + (double) f + 1.0D);
+        int k3 = MathHelper.b(d - (double) f - 1.0D);
+        int l3 = MathHelper.b(d + (double) f + 1.0D);
+        List list = i.b(e, AxisAlignedBB.b(l, l1, k3, j1, j3, l3));
+        Vec3D vec3d = Vec3D.b(b, c, d);
+
+        for (int i4 = 0; i4 < list.size(); i4++) {
+            Entity entity = (Entity) list.get(i4);
+            double d11 = entity.e(b, c, d) / (double) f;
+
+            if (d11 <= 1.0D) {
+                double d6 = entity.p - b;
+                double d8 = entity.q - c;
+                double d10 = entity.r - d;
+                double d12 = MathHelper.a(d6 * d6 + d8 * d8 + d10 * d10);
+
+                d6 /= d12;
+                d8 /= d12;
+                d10 /= d12;
+                double d13 = i.a(vec3d, entity.z);
+                double d14 = (1.0D - d11) * d13;
+
+                // Craftbukkit: explosion damage hook
+                int damage = (int) (((d14 * d14 + d14) / 2D) * 8D * (double) f + 1.0D);
+                CraftServer servr = ((WorldServer)i).getServer();
+                CraftEntity damagee = null;
+                if(entity instanceof EntityPlayerMP)
+                {
+                    damagee = new CraftPlayer(servr, (EntityPlayerMP)entity);
+                } else if(entity instanceof EntityLiving)
+                {
+                    damagee = new CraftLivingEntity(servr, (EntityLiving)entity);
+                }
+                if(e == null) { // Block explosion
+                    // Craftbukkit TODO: get the x/y/z of the tnt block?
+                    EntityDamagedByBlockEvent edbbe = new EntityDamagedByBlockEvent(null, damagee, EntityDamagedEvent.DamageCause.BLOCK_EXPLOSION, damage);
+                    servr.getPluginManager().callEvent(edbbe);
+                    if(!edbbe.isCancelled()) entity.a(e, damage);
+                } else {
+                    CraftEntity damager = null;
+                    if(e instanceof EntityPlayerMP)
+                    {
+                        // not possible in normal operations
+                        damager = new CraftPlayer(servr, (EntityPlayerMP)e);
+                    } else if(e instanceof EntityLiving)
+                    {
+                        damager = new CraftLivingEntity(servr, (EntityLiving) e);
+                    }
+                    EntityDamagedByEntityEvent edbbe = new EntityDamagedByEntityEvent(damager, damagee, EntityDamagedEvent.DamageCause.ENTITY_EXPLOSION, damage);
+                    servr.getPluginManager().callEvent(edbbe);
+                    if(!edbbe.isCancelled()) entity.a(e, damage);
+                }
+                // Craftbukkit: end
+
+                double d15 = d14;
+
+                entity.s += d6 * d15;
+                entity.t += d8 * d15;
+                entity.u += d10 * d15;
+            }
+        }
+
+        f = f1;
+        ArrayList arraylist = new ArrayList();
+
+        arraylist.addAll(g);
+        if (a) {
+            for (int j4 = arraylist.size() - 1; j4 >= 0; j4--) {
+                ChunkPosition chunkposition = (ChunkPosition) arraylist.get(j4);
+                int i2 = chunkposition.a;
+                int k4 = chunkposition.b;
+                int l4 = chunkposition.c;
+                int i5 = i.a(i2, k4, l4);
+                int j5 = i.a(i2, k4 - 1, l4);
+
+                if (i5 == 0 && Block.o[j5] && h.nextInt(3) == 0) {
+                    i.d(i2, k4, l4, Block.ar.bh);
+                }
+            }
+
+        }
+    }
+
+    public void b() {
+        i.a(b, c, d, "random.explode", 4F, (1.0F + (i.l.nextFloat() - i.l.nextFloat()) * 0.2F) * 0.7F);
+        ArrayList arraylist = new ArrayList();
+
+        arraylist.addAll(g);
+        for (int j = arraylist.size() - 1; j >= 0; j--) {
+            ChunkPosition chunkposition = (ChunkPosition) arraylist.get(j);
+            int k = chunkposition.a;
+            int l = chunkposition.b;
+            int i1 = chunkposition.c;
+            int j1 = i.a(k, l, i1);
+
+            for (int k1 = 0; k1 < 1; k1++) {
+                double d1 = (float) k + i.l.nextFloat();
+                double d2 = (float) l + i.l.nextFloat();
+                double d3 = (float) i1 + i.l.nextFloat();
+                double d4 = d1 - b;
+                double d5 = d2 - c;
+                double d6 = d3 - d;
+                double d7 = MathHelper.a(d4 * d4 + d5 * d5 + d6 * d6);
+
+                d4 /= d7;
+                d5 /= d7;
+                d6 /= d7;
+                double d8 = 0.5D / (d7 / (double) f + 0.10000000000000001D);
+
+                d8 *= i.l.nextFloat() * i.l.nextFloat() + 0.3F;
+                d4 *= d8;
+                d5 *= d8;
+                d6 *= d8;
+                i.a("explode", (d1 + b * 1.0D) / 2D, (d2 + c * 1.0D) / 2D, (d3 + d * 1.0D) / 2D, d4, d5, d6);
+                i.a("smoke", d1, d2, d3, d4, d5, d6);
+            }
+
+            if (j1 > 0) {
+                Block.m[j1].a(i, k, l, i1, i.b(k, l, i1), 0.3F);
+                i.d(k, l, i1, 0);
+                Block.m[j1].c(i, k, l, i1);
+            }
+        }
+
+    }
+}
+