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.EntityLiving; import net.minecraft.entity.item.EntityTNTPrimed; 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 f = this.explosionSize; HashSet hashset = new HashSet(); int i; int j; int k; double d0; double d1; double d2; for (i = 0; i < this.field_77289_h; ++i) { for (j = 0; j < this.field_77289_h; ++j) { for (k = 0; k < this.field_77289_h; ++k) { if (i == 0 || i == this.field_77289_h - 1 || j == 0 || j == this.field_77289_h - 1 || k == 0 || k == this.field_77289_h - 1) { double d3 = (double)((float)i / ((float)this.field_77289_h - 1.0F) * 2.0F - 1.0F); double d4 = (double)((float)j / ((float)this.field_77289_h - 1.0F) * 2.0F - 1.0F); double d5 = (double)((float)k / ((float)this.field_77289_h - 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.explosionSize * (0.7F + this.worldObj.rand.nextFloat() * 0.6F); d0 = this.explosionX; d1 = this.explosionY; d2 = this.explosionZ; for (float f2 = 0.3F; f1 > 0.0F; f1 -= f2 * 0.75F) { int l = MathHelper.floor_double(d0); int i1 = MathHelper.floor_double(d1); int j1 = MathHelper.floor_double(d2); int k1 = this.worldObj.getBlockId(l, i1, j1); if (k1 > 0) { Block block = Block.blocksList[k1]; float f3 = this.exploder != null ? this.exploder.func_82146_a(this, this.worldObj, l, i1, j1, block) : block.getExplosionResistance(this.exploder, worldObj, l, i1, j1, explosionX, explosionY, explosionZ); f1 -= (f3 + 0.3F) * f2; } if (f1 > 0.0F && (this.exploder == null || this.exploder.func_96091_a(this, this.worldObj, l, i1, j1, k1, f1))) { hashset.add(new ChunkPosition(l, i1, j1)); } d0 += d3 * (double)f2; d1 += d4 * (double)f2; d2 += d5 * (double)f2; } } } } } this.affectedBlockPositions.addAll(hashset); this.explosionSize *= 2.0F; i = MathHelper.floor_double(this.explosionX - (double)this.explosionSize - 1.0D); j = MathHelper.floor_double(this.explosionX + (double)this.explosionSize + 1.0D); k = MathHelper.floor_double(this.explosionY - (double)this.explosionSize - 1.0D); int l1 = MathHelper.floor_double(this.explosionY + (double)this.explosionSize + 1.0D); int i2 = 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.getAABBPool().getAABB((double)i, (double)k, (double)i2, (double)j, (double)l1, (double)j2)); Vec3 vec3 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.explosionX, this.explosionY, this.explosionZ); for (int k2 = 0; k2 < list.size(); ++k2) { Entity entity = (Entity)list.get(k2); double d7 = entity.getDistance(this.explosionX, this.explosionY, this.explosionZ) / (double)this.explosionSize; if (d7 <= 1.0D) { d0 = entity.posX - this.explosionX; d1 = entity.posY + (double)entity.getEyeHeight() - this.explosionY; d2 = entity.posZ - this.explosionZ; double d8 = (double)MathHelper.sqrt_double(d0 * d0 + d1 * d1 + d2 * d2); if (d8 != 0.0D) { d0 /= d8; d1 /= d8; d2 /= d8; double d9 = (double)this.worldObj.getBlockDensity(vec3, entity.boundingBox); double d10 = (1.0D - d7) * d9; entity.attackEntityFrom(DamageSource.setExplosionSource(this), (int)((d10 * d10 + d10) / 2.0D * 8.0D * (double)this.explosionSize + 1.0D)); double d11 = EnchantmentProtection.func_92092_a(entity, d10); entity.motionX += d0 * d11; entity.motionY += d1 * d11; entity.motionZ += d2 * d11; if (entity instanceof EntityPlayer) { this.field_77288_k.put((EntityPlayer)entity, this.worldObj.getWorldVec3Pool().getVecFromPool(d0 * d10, d1 * d10, d2 * d10)); } } } } this.explosionSize = f; } /** * 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 iterator; ChunkPosition chunkposition; int i; int j; int k; int l; if (this.isSmoking) { iterator = this.affectedBlockPositions.iterator(); while (iterator.hasNext()) { chunkposition = (ChunkPosition)iterator.next(); i = chunkposition.x; j = chunkposition.y; k = chunkposition.z; l = this.worldObj.getBlockId(i, j, k); if (par1) { double d0 = (double)((float)i + this.worldObj.rand.nextFloat()); double d1 = (double)((float)j + this.worldObj.rand.nextFloat()); double d2 = (double)((float)k + this.worldObj.rand.nextFloat()); double d3 = d0 - this.explosionX; double d4 = d1 - this.explosionY; double d5 = d2 - this.explosionZ; double d6 = (double)MathHelper.sqrt_double(d3 * d3 + d4 * d4 + d5 * d5); d3 /= d6; d4 /= d6; d5 /= d6; double d7 = 0.5D / (d6 / (double)this.explosionSize + 0.1D); d7 *= (double)(this.worldObj.rand.nextFloat() * this.worldObj.rand.nextFloat() + 0.3F); d3 *= d7; d4 *= d7; d5 *= d7; this.worldObj.spawnParticle("explode", (d0 + this.explosionX * 1.0D) / 2.0D, (d1 + this.explosionY * 1.0D) / 2.0D, (d2 + this.explosionZ * 1.0D) / 2.0D, d3, d4, d5); this.worldObj.spawnParticle("smoke", d0, d1, d2, d3, d4, d5); } if (l > 0) { Block block = Block.blocksList[l]; if (block.canDropFromExplosion(this)) { block.dropBlockAsItemWithChance(this.worldObj, i, j, k, this.worldObj.getBlockMetadata(i, j, k), 1.0F / this.explosionSize, 0); } block.onBlockExploded(this.worldObj, i, j, k, this); } } } if (this.isFlaming) { iterator = this.affectedBlockPositions.iterator(); while (iterator.hasNext()) { chunkposition = (ChunkPosition)iterator.next(); i = chunkposition.x; j = chunkposition.y; k = chunkposition.z; l = this.worldObj.getBlockId(i, j, k); int i1 = this.worldObj.getBlockId(i, j - 1, k); if (l == 0 && Block.opaqueCubeLookup[i1] && this.explosionRNG.nextInt(3) == 0) { this.worldObj.setBlock(i, j, k, Block.fire.blockID); } } } } public Map func_77277_b() { return this.field_77288_k; } public EntityLiving func_94613_c() { return this.exploder == null ? null : (this.exploder instanceof EntityTNTPrimed ? ((EntityTNTPrimed)this.exploder).getTntPlacedBy() : (this.exploder instanceof EntityLiving ? (EntityLiving)this.exploder : null)); } }