001 package net.minecraft.world; 002 003 import java.util.ArrayList; 004 import java.util.HashMap; 005 import java.util.HashSet; 006 import java.util.Iterator; 007 import java.util.List; 008 import java.util.Map; 009 import java.util.Random; 010 import net.minecraft.block.Block; 011 import net.minecraft.entity.Entity; 012 import net.minecraft.entity.player.EntityPlayer; 013 import net.minecraft.util.AxisAlignedBB; 014 import net.minecraft.util.DamageSource; 015 import net.minecraft.util.MathHelper; 016 import net.minecraft.util.Vec3; 017 018 public class Explosion 019 { 020 /** whether or not the explosion sets fire to blocks around it */ 021 public boolean isFlaming = false; 022 023 /** whether or not this explosion spawns smoke particles */ 024 public boolean isSmoking = true; 025 private int field_77289_h = 16; 026 private Random explosionRNG = new Random(); 027 private World worldObj; 028 public double explosionX; 029 public double explosionY; 030 public double explosionZ; 031 public Entity exploder; 032 public float explosionSize; 033 034 /** A list of ChunkPositions of blocks affected by this explosion */ 035 public List affectedBlockPositions = new ArrayList(); 036 private Map field_77288_k = new HashMap(); 037 038 public Explosion(World par1World, Entity par2Entity, double par3, double par5, double par7, float par9) 039 { 040 this.worldObj = par1World; 041 this.exploder = par2Entity; 042 this.explosionSize = par9; 043 this.explosionX = par3; 044 this.explosionY = par5; 045 this.explosionZ = par7; 046 } 047 048 /** 049 * Does the first part of the explosion (destroy blocks) 050 */ 051 public void doExplosionA() 052 { 053 float var1 = this.explosionSize; 054 HashSet var2 = new HashSet(); 055 int var3; 056 int var4; 057 int var5; 058 double var15; 059 double var17; 060 double var19; 061 062 for (var3 = 0; var3 < this.field_77289_h; ++var3) 063 { 064 for (var4 = 0; var4 < this.field_77289_h; ++var4) 065 { 066 for (var5 = 0; var5 < this.field_77289_h; ++var5) 067 { 068 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) 069 { 070 double var6 = (double)((float)var3 / ((float)this.field_77289_h - 1.0F) * 2.0F - 1.0F); 071 double var8 = (double)((float)var4 / ((float)this.field_77289_h - 1.0F) * 2.0F - 1.0F); 072 double var10 = (double)((float)var5 / ((float)this.field_77289_h - 1.0F) * 2.0F - 1.0F); 073 double var12 = Math.sqrt(var6 * var6 + var8 * var8 + var10 * var10); 074 var6 /= var12; 075 var8 /= var12; 076 var10 /= var12; 077 float var14 = this.explosionSize * (0.7F + this.worldObj.rand.nextFloat() * 0.6F); 078 var15 = this.explosionX; 079 var17 = this.explosionY; 080 var19 = this.explosionZ; 081 082 for (float var21 = 0.3F; var14 > 0.0F; var14 -= var21 * 0.75F) 083 { 084 int var22 = MathHelper.floor_double(var15); 085 int var23 = MathHelper.floor_double(var17); 086 int var24 = MathHelper.floor_double(var19); 087 int var25 = this.worldObj.getBlockId(var22, var23, var24); 088 089 if (var25 > 0) 090 { 091 Block var26 = Block.blocksList[var25]; 092 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); 093 var14 -= (var27 + 0.3F) * var21; 094 } 095 096 if (var14 > 0.0F) 097 { 098 var2.add(new ChunkPosition(var22, var23, var24)); 099 } 100 101 var15 += var6 * (double)var21; 102 var17 += var8 * (double)var21; 103 var19 += var10 * (double)var21; 104 } 105 } 106 } 107 } 108 } 109 110 this.affectedBlockPositions.addAll(var2); 111 this.explosionSize *= 2.0F; 112 var3 = MathHelper.floor_double(this.explosionX - (double)this.explosionSize - 1.0D); 113 var4 = MathHelper.floor_double(this.explosionX + (double)this.explosionSize + 1.0D); 114 var5 = MathHelper.floor_double(this.explosionY - (double)this.explosionSize - 1.0D); 115 int var28 = MathHelper.floor_double(this.explosionY + (double)this.explosionSize + 1.0D); 116 int var7 = MathHelper.floor_double(this.explosionZ - (double)this.explosionSize - 1.0D); 117 int var29 = MathHelper.floor_double(this.explosionZ + (double)this.explosionSize + 1.0D); 118 List var9 = this.worldObj.getEntitiesWithinAABBExcludingEntity(this.exploder, AxisAlignedBB.getAABBPool().addOrModifyAABBInPool((double)var3, (double)var5, (double)var7, (double)var4, (double)var28, (double)var29)); 119 Vec3 var30 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.explosionX, this.explosionY, this.explosionZ); 120 121 for (int var11 = 0; var11 < var9.size(); ++var11) 122 { 123 Entity var31 = (Entity)var9.get(var11); 124 double var13 = var31.getDistance(this.explosionX, this.explosionY, this.explosionZ) / (double)this.explosionSize; 125 126 if (var13 <= 1.0D) 127 { 128 var15 = var31.posX - this.explosionX; 129 var17 = var31.posY + (double)var31.getEyeHeight() - this.explosionY; 130 var19 = var31.posZ - this.explosionZ; 131 double var33 = (double)MathHelper.sqrt_double(var15 * var15 + var17 * var17 + var19 * var19); 132 133 if (var33 != 0.0D) 134 { 135 var15 /= var33; 136 var17 /= var33; 137 var19 /= var33; 138 double var32 = (double)this.worldObj.getBlockDensity(var30, var31.boundingBox); 139 double var34 = (1.0D - var13) * var32; 140 var31.attackEntityFrom(DamageSource.explosion, (int)((var34 * var34 + var34) / 2.0D * 8.0D * (double)this.explosionSize + 1.0D)); 141 var31.motionX += var15 * var34; 142 var31.motionY += var17 * var34; 143 var31.motionZ += var19 * var34; 144 145 if (var31 instanceof EntityPlayer) 146 { 147 this.field_77288_k.put((EntityPlayer)var31, this.worldObj.getWorldVec3Pool().getVecFromPool(var15 * var34, var17 * var34, var19 * var34)); 148 } 149 } 150 } 151 } 152 153 this.explosionSize = var1; 154 } 155 156 /** 157 * Does the second part of the explosion (sound, particles, drop spawn) 158 */ 159 public void doExplosionB(boolean par1) 160 { 161 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); 162 163 if (this.explosionSize >= 2.0F && this.isSmoking) 164 { 165 this.worldObj.spawnParticle("hugeexplosion", this.explosionX, this.explosionY, this.explosionZ, 1.0D, 0.0D, 0.0D); 166 } 167 else 168 { 169 this.worldObj.spawnParticle("largeexplode", this.explosionX, this.explosionY, this.explosionZ, 1.0D, 0.0D, 0.0D); 170 } 171 172 Iterator var2; 173 ChunkPosition var3; 174 int var4; 175 int var5; 176 int var6; 177 int var7; 178 179 if (this.isSmoking) 180 { 181 var2 = this.affectedBlockPositions.iterator(); 182 183 while (var2.hasNext()) 184 { 185 var3 = (ChunkPosition)var2.next(); 186 var4 = var3.x; 187 var5 = var3.y; 188 var6 = var3.z; 189 var7 = this.worldObj.getBlockId(var4, var5, var6); 190 191 if (par1) 192 { 193 double var8 = (double)((float)var4 + this.worldObj.rand.nextFloat()); 194 double var10 = (double)((float)var5 + this.worldObj.rand.nextFloat()); 195 double var12 = (double)((float)var6 + this.worldObj.rand.nextFloat()); 196 double var14 = var8 - this.explosionX; 197 double var16 = var10 - this.explosionY; 198 double var18 = var12 - this.explosionZ; 199 double var20 = (double)MathHelper.sqrt_double(var14 * var14 + var16 * var16 + var18 * var18); 200 var14 /= var20; 201 var16 /= var20; 202 var18 /= var20; 203 double var22 = 0.5D / (var20 / (double)this.explosionSize + 0.1D); 204 var22 *= (double)(this.worldObj.rand.nextFloat() * this.worldObj.rand.nextFloat() + 0.3F); 205 var14 *= var22; 206 var16 *= var22; 207 var18 *= var22; 208 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); 209 this.worldObj.spawnParticle("smoke", var8, var10, var12, var14, var16, var18); 210 } 211 212 if (var7 > 0) 213 { 214 Block var25 = Block.blocksList[var7]; 215 216 if (var25.func_85103_a(this)) 217 { 218 var25.dropBlockAsItemWithChance(this.worldObj, var4, var5, var6, this.worldObj.getBlockMetadata(var4, var5, var6), 0.3F, 0); 219 } 220 221 if (this.worldObj.setBlockAndMetadataWithUpdate(var4, var5, var6, 0, 0, this.worldObj.isRemote)) 222 { 223 this.worldObj.notifyBlocksOfNeighborChange(var4, var5, var6, 0); 224 } 225 226 var25.onBlockDestroyedByExplosion(this.worldObj, var4, var5, var6); 227 } 228 } 229 } 230 231 if (this.isFlaming) 232 { 233 var2 = this.affectedBlockPositions.iterator(); 234 235 while (var2.hasNext()) 236 { 237 var3 = (ChunkPosition)var2.next(); 238 var4 = var3.x; 239 var5 = var3.y; 240 var6 = var3.z; 241 var7 = this.worldObj.getBlockId(var4, var5, var6); 242 int var24 = this.worldObj.getBlockId(var4, var5 - 1, var6); 243 244 if (var7 == 0 && Block.opaqueCubeLookup[var24] && this.explosionRNG.nextInt(3) == 0) 245 { 246 this.worldObj.setBlockWithNotify(var4, var5, var6, Block.fire.blockID); 247 } 248 } 249 } 250 } 251 252 public Map func_77277_b() 253 { 254 return this.field_77288_k; 255 } 256 }