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package net.minecraft.server;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Random;
import java.util.Set;
// CraftBukkit start
import org.bukkit.event.entity.EntityDamageByBlockEvent;
import org.bukkit.event.entity.EntityDamageByEntityEvent;
import org.bukkit.event.entity.EntityDamageEvent;
import org.bukkit.event.entity.EntityExplodeEvent;
import org.bukkit.event.entity.EntityDamageEvent.DamageCause;
import org.bukkit.Location;
// CraftBukkit end
public class Explosion {
public boolean a = false;
private Random h = new Random();
private World world;
public double posX;
public double posY;
public double posZ;
public Entity source;
public float size;
public Set blocks = new HashSet();
public boolean wasCanceled = false; // CraftBukkit
public Explosion(World world, Entity entity, double d0, double d1, double d2, float f) {
this.world = world;
this.source = entity;
this.size = f;
this.posX = d0;
this.posY = d1;
this.posZ = d2;
}
public void a() {
float f = this.size;
byte b0 = 16;
int i;
int j;
int k;
double d0;
double d1;
double d2;
for (i = 0; i < b0; ++i) {
for (j = 0; j < b0; ++j) {
for (k = 0; k < b0; ++k) {
if (i == 0 || i == b0 - 1 || j == 0 || j == b0 - 1 || k == 0 || k == b0 - 1) {
double d3 = (double) ((float) i / ((float) b0 - 1.0F) * 2.0F - 1.0F);
double d4 = (double) ((float) j / ((float) b0 - 1.0F) * 2.0F - 1.0F);
double d5 = (double) ((float) k / ((float) b0 - 1.0F) * 2.0F - 1.0F);
double d6 = Math.sqrt(d3 * d3 + d4 * d4 + d5 * d5);
d3 /= d6;
d4 /= d6;
d5 /= d6;
float f1 = this.size * (0.7F + this.world.random.nextFloat() * 0.6F);
d0 = this.posX;
d1 = this.posY;
d2 = this.posZ;
for (float f2 = 0.3F; f1 > 0.0F; f1 -= f2 * 0.75F) {
int l = MathHelper.floor(d0);
int i1 = MathHelper.floor(d1);
int j1 = MathHelper.floor(d2);
int k1 = this.world.getTypeId(l, i1, j1);
if (k1 > 0) {
f1 -= (Block.byId[k1].a(this.source) + 0.3F) * f2;
}
if (f1 > 0.0F) {
this.blocks.add(new ChunkPosition(l, i1, j1));
}
d0 += d3 * (double) f2;
d1 += d4 * (double) f2;
d2 += d5 * (double) f2;
}
}
}
}
}
this.size *= 2.0F;
i = MathHelper.floor(this.posX - (double) this.size - 1.0D);
j = MathHelper.floor(this.posX + (double) this.size + 1.0D);
k = MathHelper.floor(this.posY - (double) this.size - 1.0D);
int l1 = MathHelper.floor(this.posY + (double) this.size + 1.0D);
int i2 = MathHelper.floor(this.posZ - (double) this.size - 1.0D);
int j2 = MathHelper.floor(this.posZ + (double) this.size + 1.0D);
List list = this.world.b(this.source, AxisAlignedBB.b((double) i, (double) k, (double) i2, (double) j, (double) l1, (double) j2));
Vec3D vec3d = Vec3D.create(this.posX, this.posY, this.posZ);
for (int k2 = 0; k2 < list.size(); ++k2) {
Entity entity = (Entity) list.get(k2);
double d7 = entity.f(this.posX, this.posY, this.posZ) / (double) this.size;
if (d7 <= 1.0D) {
d0 = entity.locX - this.posX;
d1 = entity.locY - this.posY;
d2 = entity.locZ - this.posZ;
double d8 = (double) MathHelper.a(d0 * d0 + d1 * d1 + d2 * d2);
d0 /= d8;
d1 /= d8;
d2 /= d8;
double d9 = (double) this.world.a(vec3d, entity.boundingBox);
double d10 = (1.0D - d7) * d9;
// CraftBukkit start - explosion damage hook
org.bukkit.Server server = this.world.getServer();
org.bukkit.entity.Entity damagee = (entity == null) ? null : entity.getBukkitEntity();
int damageDone = (int) ((d10 * d10 + d10) / 2.0D * 8.0D * (double) this.size + 1.0D);
if (damagee == null) {
// nothing was hurt
} else if (this.source == null) { // Block explosion
// TODO: get the x/y/z of the tnt block?
// does this even get called ever? @see EntityTNTPrimed - not BlockTNT or whatever
EntityDamageByBlockEvent event = new EntityDamageByBlockEvent(null, damagee, EntityDamageEvent.DamageCause.BLOCK_EXPLOSION, damageDone);
server.getPluginManager().callEvent(event);
if (!event.isCancelled()) {
entity.damageEntity(DamageSource.EXPLOSION, event.getDamage());
entity.motX += d0 * d10;
entity.motY += d1 * d10;
entity.motZ += d2 * d10;
}
} else {
EntityDamageByEntityEvent event = new EntityDamageByEntityEvent(this.source.getBukkitEntity(), damagee, EntityDamageEvent.DamageCause.ENTITY_EXPLOSION, damageDone);
server.getPluginManager().callEvent(event);
if (!event.isCancelled()) {
entity.damageEntity(DamageSource.EXPLOSION, event.getDamage());
entity.motX += d0 * d10;
entity.motY += d1 * d10;
entity.motZ += d2 * d10;
}
}
// CraftBukkit end
}
}
this.size = f;
ArrayList arraylist = new ArrayList();
arraylist.addAll(this.blocks);
if (this.a) {
for (int l2 = arraylist.size() - 1; l2 >= 0; --l2) {
ChunkPosition chunkposition = (ChunkPosition) arraylist.get(l2);
int i3 = chunkposition.x;
int j3 = chunkposition.y;
int k3 = chunkposition.z;
int l3 = this.world.getTypeId(i3, j3, k3);
int i4 = this.world.getTypeId(i3, j3 - 1, k3);
if (l3 == 0 && Block.o[i4] && this.h.nextInt(3) == 0) {
this.world.setTypeId(i3, j3, k3, Block.FIRE.id);
}
}
}
}
public void a(boolean flag) {
this.world.makeSound(this.posX, this.posY, this.posZ, "random.explode", 4.0F, (1.0F + (this.world.random.nextFloat() - this.world.random.nextFloat()) * 0.2F) * 0.7F);
this.world.a("hugeexplosion", this.posX, this.posY, this.posZ, 0.0D, 0.0D, 0.0D);
ArrayList arraylist = new ArrayList();
arraylist.addAll(this.blocks);
// CraftBukkit start
org.bukkit.World bworld = this.world.getWorld();
org.bukkit.entity.Entity explode = this.source == null ? null : this.source.getBukkitEntity();
Location location = new Location(bworld, this.posX, this.posY, this.posZ);
List<org.bukkit.block.Block> blockList = new ArrayList<org.bukkit.block.Block>();
for (int j = arraylist.size() - 1; j >= 0; j--) {
ChunkPosition cpos = (ChunkPosition) arraylist.get(j);
org.bukkit.block.Block block = bworld.getBlockAt(cpos.x, cpos.y, cpos.z);
if (block.getType() != org.bukkit.Material.AIR) {
blockList.add(block);
}
}
EntityExplodeEvent event = new EntityExplodeEvent(explode, location, blockList);
this.world.getServer().getPluginManager().callEvent(event);
if (event.isCancelled()) {
this.wasCanceled = true;
return;
}
// CraftBukkit end
for (int i = arraylist.size() - 1; i >= 0; --i) {
ChunkPosition chunkposition = (ChunkPosition) arraylist.get(i);
int j = chunkposition.x;
int k = chunkposition.y;
int l = chunkposition.z;
int i1 = this.world.getTypeId(j, k, l);
if (flag) {
double d0 = (double) ((float) j + this.world.random.nextFloat());
double d1 = (double) ((float) k + this.world.random.nextFloat());
double d2 = (double) ((float) l + this.world.random.nextFloat());
double d3 = d0 - this.posX;
double d4 = d1 - this.posY;
double d5 = d2 - this.posZ;
double d6 = (double) MathHelper.a(d3 * d3 + d4 * d4 + d5 * d5);
d3 /= d6;
d4 /= d6;
d5 /= d6;
double d7 = 0.5D / (d6 / (double) this.size + 0.1D);
d7 *= (double) (this.world.random.nextFloat() * this.world.random.nextFloat() + 0.3F);
d3 *= d7;
d4 *= d7;
d5 *= d7;
this.world.a("explode", (d0 + this.posX * 1.0D) / 2.0D, (d1 + this.posY * 1.0D) / 2.0D, (d2 + this.posZ * 1.0D) / 2.0D, d3, d4, d5);
this.world.a("smoke", d0, d1, d2, d3, d4, d5);
}
// CraftBukkit - stop explosions from putting out fire
if (i1 > 0 && i1 != Block.FIRE.id) {
// CraftBukkit
Block.byId[i1].dropNaturally(this.world, j, k, l, this.world.getData(j, k, l), event.getYield());
this.world.setTypeId(j, k, l, 0);
Block.byId[i1].a_(this.world, j, k, l);
}
}
}
}
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