package net.minecraft.world;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Random;
import net.minecraft.block.Block;
import net.minecraft.enchantment.EnchantmentProtection;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.DamageSource;
import net.minecraft.util.MathHelper;
import net.minecraft.util.Vec3;
public class Explosion
{
/** whether or not the explosion sets fire to blocks around it */
public boolean isFlaming = false;
/** whether or not this explosion spawns smoke particles */
public boolean isSmoking = true;
private int field_77289_h = 16;
private Random explosionRNG = new Random();
private World worldObj;
public double explosionX;
public double explosionY;
public double explosionZ;
public Entity exploder;
public float explosionSize;
/** A list of ChunkPositions of blocks affected by this explosion */
public List affectedBlockPositions = new ArrayList();
private Map field_77288_k = new HashMap();
public Explosion(World par1World, Entity par2Entity, double par3, double par5, double par7, float par9)
{
this.worldObj = par1World;
this.exploder = par2Entity;
this.explosionSize = par9;
this.explosionX = par3;
this.explosionY = par5;
this.explosionZ = par7;
}
/**
* Does the first part of the explosion (destroy blocks)
*/
public void doExplosionA()
{
float var1 = this.explosionSize;
HashSet var2 = new HashSet();
int var3;
int var4;
int var5;
double var15;
double var17;
double var19;
for (var3 = 0; var3 < this.field_77289_h; ++var3)
{
for (var4 = 0; var4 < this.field_77289_h; ++var4)
{
for (var5 = 0; var5 < this.field_77289_h; ++var5)
{
if (var3 == 0 || var3 == this.field_77289_h - 1 || var4 == 0 || var4 == this.field_77289_h - 1 || var5 == 0 || var5 == this.field_77289_h - 1)
{
double var6 = (double)((float)var3 / ((float)this.field_77289_h - 1.0F) * 2.0F - 1.0F);
double var8 = (double)((float)var4 / ((float)this.field_77289_h - 1.0F) * 2.0F - 1.0F);
double var10 = (double)((float)var5 / ((float)this.field_77289_h - 1.0F) * 2.0F - 1.0F);
double var12 = Math.sqrt(var6 * var6 + var8 * var8 + var10 * var10);
var6 /= var12;
var8 /= var12;
var10 /= var12;
float var14 = this.explosionSize * (0.7F + this.worldObj.rand.nextFloat() * 0.6F);
var15 = this.explosionX;
var17 = this.explosionY;
var19 = this.explosionZ;
for (float var21 = 0.3F; var14 > 0.0F; var14 -= var21 * 0.75F)
{
int var22 = MathHelper.floor_double(var15);
int var23 = MathHelper.floor_double(var17);
int var24 = MathHelper.floor_double(var19);
int var25 = this.worldObj.getBlockId(var22, var23, var24);
if (var25 > 0)
{
Block var26 = Block.blocksList[var25];
float var27 = this.exploder != null ? this.exploder.func_82146_a(this, var26, var22, var23, var24) : var26.getExplosionResistance(this.exploder, worldObj, var22, var23, var24, explosionX, explosionY, explosionZ);
var14 -= (var27 + 0.3F) * var21;
}
if (var14 > 0.0F)
{
var2.add(new ChunkPosition(var22, var23, var24));
}
var15 += var6 * (double)var21;
var17 += var8 * (double)var21;
var19 += var10 * (double)var21;
}
}
}
}
}
this.affectedBlockPositions.addAll(var2);
this.explosionSize *= 2.0F;
var3 = MathHelper.floor_double(this.explosionX - (double)this.explosionSize - 1.0D);
var4 = MathHelper.floor_double(this.explosionX + (double)this.explosionSize + 1.0D);
var5 = MathHelper.floor_double(this.explosionY - (double)this.explosionSize - 1.0D);
int var29 = MathHelper.floor_double(this.explosionY + (double)this.explosionSize + 1.0D);
int var7 = MathHelper.floor_double(this.explosionZ - (double)this.explosionSize - 1.0D);
int var30 = MathHelper.floor_double(this.explosionZ + (double)this.explosionSize + 1.0D);
List var9 = this.worldObj.getEntitiesWithinAABBExcludingEntity(this.exploder, AxisAlignedBB.getAABBPool().addOrModifyAABBInPool((double)var3, (double)var5, (double)var7, (double)var4, (double)var29, (double)var30));
Vec3 var31 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.explosionX, this.explosionY, this.explosionZ);
for (int var11 = 0; var11 < var9.size(); ++var11)
{
Entity var32 = (Entity)var9.get(var11);
double var13 = var32.getDistance(this.explosionX, this.explosionY, this.explosionZ) / (double)this.explosionSize;
if (var13 <= 1.0D)
{
var15 = var32.posX - this.explosionX;
var17 = var32.posY + (double)var32.getEyeHeight() - this.explosionY;
var19 = var32.posZ - this.explosionZ;
double var34 = (double)MathHelper.sqrt_double(var15 * var15 + var17 * var17 + var19 * var19);
if (var34 != 0.0D)
{
var15 /= var34;
var17 /= var34;
var19 /= var34;
double var33 = (double)this.worldObj.getBlockDensity(var31, var32.boundingBox);
double var35 = (1.0D - var13) * var33;
var32.attackEntityFrom(DamageSource.explosion, (int)((var35 * var35 + var35) / 2.0D * 8.0D * (double)this.explosionSize + 1.0D));
double var36 = EnchantmentProtection.func_92040_a(var32, var35);
var32.motionX += var15 * var36;
var32.motionY += var17 * var36;
var32.motionZ += var19 * var36;
if (var32 instanceof EntityPlayer)
{
this.field_77288_k.put((EntityPlayer)var32, this.worldObj.getWorldVec3Pool().getVecFromPool(var15 * var35, var17 * var35, var19 * var35));
}
}
}
}
this.explosionSize = var1;
}
/**
* Does the second part of the explosion (sound, particles, drop spawn)
*/
public void doExplosionB(boolean par1)
{
this.worldObj.playSoundEffect(this.explosionX, this.explosionY, this.explosionZ, "random.explode", 4.0F, (1.0F + (this.worldObj.rand.nextFloat() - this.worldObj.rand.nextFloat()) * 0.2F) * 0.7F);
if (this.explosionSize >= 2.0F && this.isSmoking)
{
this.worldObj.spawnParticle("hugeexplosion", this.explosionX, this.explosionY, this.explosionZ, 1.0D, 0.0D, 0.0D);
}
else
{
this.worldObj.spawnParticle("largeexplode", this.explosionX, this.explosionY, this.explosionZ, 1.0D, 0.0D, 0.0D);
}
Iterator var2;
ChunkPosition var3;
int var4;
int var5;
int var6;
int var7;
if (this.isSmoking)
{
var2 = this.affectedBlockPositions.iterator();
while (var2.hasNext())
{
var3 = (ChunkPosition)var2.next();
var4 = var3.x;
var5 = var3.y;
var6 = var3.z;
var7 = this.worldObj.getBlockId(var4, var5, var6);
if (par1)
{
double var8 = (double)((float)var4 + this.worldObj.rand.nextFloat());
double var10 = (double)((float)var5 + this.worldObj.rand.nextFloat());
double var12 = (double)((float)var6 + this.worldObj.rand.nextFloat());
double var14 = var8 - this.explosionX;
double var16 = var10 - this.explosionY;
double var18 = var12 - this.explosionZ;
double var20 = (double)MathHelper.sqrt_double(var14 * var14 + var16 * var16 + var18 * var18);
var14 /= var20;
var16 /= var20;
var18 /= var20;
double var22 = 0.5D / (var20 / (double)this.explosionSize + 0.1D);
var22 *= (double)(this.worldObj.rand.nextFloat() * this.worldObj.rand.nextFloat() + 0.3F);
var14 *= var22;
var16 *= var22;
var18 *= var22;
this.worldObj.spawnParticle("explode", (var8 + this.explosionX * 1.0D) / 2.0D, (var10 + this.explosionY * 1.0D) / 2.0D, (var12 + this.explosionZ * 1.0D) / 2.0D, var14, var16, var18);
this.worldObj.spawnParticle("smoke", var8, var10, var12, var14, var16, var18);
}
if (var7 > 0)
{
Block var25 = Block.blocksList[var7];
if (var25.canDropFromExplosion(this))
{
var25.dropBlockAsItemWithChance(this.worldObj, var4, var5, var6, this.worldObj.getBlockMetadata(var4, var5, var6), 0.3F, 0);
}
if (this.worldObj.setBlockAndMetadataWithUpdate(var4, var5, var6, 0, 0, this.worldObj.isRemote))
{
this.worldObj.notifyBlocksOfNeighborChange(var4, var5, var6, 0);
}
var25.onBlockDestroyedByExplosion(this.worldObj, var4, var5, var6);
}
}
}
if (this.isFlaming)
{
var2 = this.affectedBlockPositions.iterator();
while (var2.hasNext())
{
var3 = (ChunkPosition)var2.next();
var4 = var3.x;
var5 = var3.y;
var6 = var3.z;
var7 = this.worldObj.getBlockId(var4, var5, var6);
int var24 = this.worldObj.getBlockId(var4, var5 - 1, var6);
if (var7 == 0 && Block.opaqueCubeLookup[var24] && this.explosionRNG.nextInt(3) == 0)
{
this.worldObj.setBlockWithNotify(var4, var5, var6, Block.fire.blockID);
}
}
}
}
public Map func_77277_b()
{
return this.field_77288_k;
}
}