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