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package net.minecraft.server;
// CraftBukkit start
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.EntityDamageByBlockEvent;
import org.bukkit.event.entity.EntityDamageByEntityEvent;
import org.bukkit.event.entity.EntityDamageEvent;
// CraftBukkit end
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 = ((Set) (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 start - 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?
EntityDamageByBlockEvent edbbe = new EntityDamageByBlockEvent(null, damagee, EntityDamageEvent.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);
}
EntityDamageByEntityEvent edbbe = new EntityDamageByEntityEvent(damager, damagee, EntityDamageEvent.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();
((List) (arraylist)).addAll(((java.util.Collection) (g)));
if (a) {
for (int j4 = ((List) (arraylist)).size() - 1; j4 >= 0; j4--) {
ChunkPosition chunkposition = (ChunkPosition) ((List) (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.e(i2, k4, l4, Block.ar.bi);
}
}
}
}
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();
((List) (arraylist)).addAll(((java.util.Collection) (g)));
for (int j = ((List) (arraylist)).size() - 1; j >= 0; j--) {
ChunkPosition chunkposition = (ChunkPosition) ((List) (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.e(k, l, i1, 0);
Block.m[j1].a_(i, k, l, i1);
}
}
}
}
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