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 public boolean field_82755_b = true; 016 private int field_77289_h = 16; 017 private Random explosionRNG = new Random(); 018 private World worldObj; 019 public double explosionX; 020 public double explosionY; 021 public double explosionZ; 022 public Entity exploder; 023 public float explosionSize; 024 public List field_77281_g = new ArrayList(); 025 private Map field_77288_k = new HashMap(); 026 027 public Explosion(World par1World, Entity par2Entity, double par3, double par5, double par7, float par9) 028 { 029 this.worldObj = par1World; 030 this.exploder = par2Entity; 031 this.explosionSize = par9; 032 this.explosionX = par3; 033 this.explosionY = par5; 034 this.explosionZ = par7; 035 } 036 037 /** 038 * Does the first part of the explosion (destroy blocks) 039 */ 040 public void doExplosionA() 041 { 042 float var1 = this.explosionSize; 043 HashSet var2 = new HashSet(); 044 int var3; 045 int var4; 046 int var5; 047 double var15; 048 double var17; 049 double var19; 050 051 for (var3 = 0; var3 < this.field_77289_h; ++var3) 052 { 053 for (var4 = 0; var4 < this.field_77289_h; ++var4) 054 { 055 for (var5 = 0; var5 < this.field_77289_h; ++var5) 056 { 057 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) 058 { 059 double var6 = (double)((float)var3 / ((float)this.field_77289_h - 1.0F) * 2.0F - 1.0F); 060 double var8 = (double)((float)var4 / ((float)this.field_77289_h - 1.0F) * 2.0F - 1.0F); 061 double var10 = (double)((float)var5 / ((float)this.field_77289_h - 1.0F) * 2.0F - 1.0F); 062 double var12 = Math.sqrt(var6 * var6 + var8 * var8 + var10 * var10); 063 var6 /= var12; 064 var8 /= var12; 065 var10 /= var12; 066 float var14 = this.explosionSize * (0.7F + this.worldObj.rand.nextFloat() * 0.6F); 067 var15 = this.explosionX; 068 var17 = this.explosionY; 069 var19 = this.explosionZ; 070 071 for (float var21 = 0.3F; var14 > 0.0F; var14 -= var21 * 0.75F) 072 { 073 int var22 = MathHelper.floor_double(var15); 074 int var23 = MathHelper.floor_double(var17); 075 int var24 = MathHelper.floor_double(var19); 076 int var25 = this.worldObj.getBlockId(var22, var23, var24); 077 078 if (var25 > 0) 079 { 080 Block var26 = Block.blocksList[var25]; 081 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); 082 var14 -= (var27 + 0.3F) * var21; 083 } 084 085 if (var14 > 0.0F) 086 { 087 var2.add(new ChunkPosition(var22, var23, var24)); 088 } 089 090 var15 += var6 * (double)var21; 091 var17 += var8 * (double)var21; 092 var19 += var10 * (double)var21; 093 } 094 } 095 } 096 } 097 } 098 099 this.field_77281_g.addAll(var2); 100 this.explosionSize *= 2.0F; 101 var3 = MathHelper.floor_double(this.explosionX - (double)this.explosionSize - 1.0D); 102 var4 = MathHelper.floor_double(this.explosionX + (double)this.explosionSize + 1.0D); 103 var5 = MathHelper.floor_double(this.explosionY - (double)this.explosionSize - 1.0D); 104 int var28 = MathHelper.floor_double(this.explosionY + (double)this.explosionSize + 1.0D); 105 int var7 = MathHelper.floor_double(this.explosionZ - (double)this.explosionSize - 1.0D); 106 int var29 = MathHelper.floor_double(this.explosionZ + (double)this.explosionSize + 1.0D); 107 List var9 = this.worldObj.getEntitiesWithinAABBExcludingEntity(this.exploder, AxisAlignedBB.getAABBPool().addOrModifyAABBInPool((double)var3, (double)var5, (double)var7, (double)var4, (double)var28, (double)var29)); 108 Vec3 var30 = this.worldObj.func_82732_R().getVecFromPool(this.explosionX, this.explosionY, this.explosionZ); 109 110 for (int var11 = 0; var11 < var9.size(); ++var11) 111 { 112 Entity var31 = (Entity)var9.get(var11); 113 double var13 = var31.getDistance(this.explosionX, this.explosionY, this.explosionZ) / (double)this.explosionSize; 114 115 if (var13 <= 1.0D) 116 { 117 var15 = var31.posX - this.explosionX; 118 var17 = var31.posY + (double)var31.getEyeHeight() - this.explosionY; 119 var19 = var31.posZ - this.explosionZ; 120 double var33 = (double)MathHelper.sqrt_double(var15 * var15 + var17 * var17 + var19 * var19); 121 122 if (var33 != 0.0D) 123 { 124 var15 /= var33; 125 var17 /= var33; 126 var19 /= var33; 127 double var32 = (double)this.worldObj.getBlockDensity(var30, var31.boundingBox); 128 double var34 = (1.0D - var13) * var32; 129 var31.attackEntityFrom(DamageSource.explosion, (int)((var34 * var34 + var34) / 2.0D * 8.0D * (double)this.explosionSize + 1.0D)); 130 var31.motionX += var15 * var34; 131 var31.motionY += var17 * var34; 132 var31.motionZ += var19 * var34; 133 134 if (var31 instanceof EntityPlayer) 135 { 136 this.field_77288_k.put((EntityPlayer)var31, this.worldObj.func_82732_R().getVecFromPool(var15 * var34, var17 * var34, var19 * var34)); 137 } 138 } 139 } 140 } 141 142 this.explosionSize = var1; 143 } 144 145 /** 146 * Does the second part of the explosion (sound, particles, drop spawn) 147 */ 148 public void doExplosionB(boolean par1) 149 { 150 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); 151 152 if (this.explosionSize >= 2.0F && this.field_82755_b) 153 { 154 this.worldObj.spawnParticle("hugeexplosion", this.explosionX, this.explosionY, this.explosionZ, 1.0D, 0.0D, 0.0D); 155 } 156 else 157 { 158 this.worldObj.spawnParticle("largeexplode", this.explosionX, this.explosionY, this.explosionZ, 1.0D, 0.0D, 0.0D); 159 } 160 161 Iterator var2; 162 ChunkPosition var3; 163 int var4; 164 int var5; 165 int var6; 166 int var7; 167 168 if (this.field_82755_b) 169 { 170 var2 = this.field_77281_g.iterator(); 171 172 while (var2.hasNext()) 173 { 174 var3 = (ChunkPosition)var2.next(); 175 var4 = var3.x; 176 var5 = var3.y; 177 var6 = var3.z; 178 var7 = this.worldObj.getBlockId(var4, var5, var6); 179 180 if (par1) 181 { 182 double var8 = (double)((float)var4 + this.worldObj.rand.nextFloat()); 183 double var10 = (double)((float)var5 + this.worldObj.rand.nextFloat()); 184 double var12 = (double)((float)var6 + this.worldObj.rand.nextFloat()); 185 double var14 = var8 - this.explosionX; 186 double var16 = var10 - this.explosionY; 187 double var18 = var12 - this.explosionZ; 188 double var20 = (double)MathHelper.sqrt_double(var14 * var14 + var16 * var16 + var18 * var18); 189 var14 /= var20; 190 var16 /= var20; 191 var18 /= var20; 192 double var22 = 0.5D / (var20 / (double)this.explosionSize + 0.1D); 193 var22 *= (double)(this.worldObj.rand.nextFloat() * this.worldObj.rand.nextFloat() + 0.3F); 194 var14 *= var22; 195 var16 *= var22; 196 var18 *= var22; 197 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); 198 this.worldObj.spawnParticle("smoke", var8, var10, var12, var14, var16, var18); 199 } 200 201 if (var7 > 0) 202 { 203 Block.blocksList[var7].dropBlockAsItemWithChance(this.worldObj, var4, var5, var6, this.worldObj.getBlockMetadata(var4, var5, var6), 0.3F, 0); 204 205 if (this.worldObj.setBlockAndMetadataWithUpdate(var4, var5, var6, 0, 0, this.worldObj.isRemote)) 206 { 207 this.worldObj.notifyBlocksOfNeighborChange(var4, var5, var6, 0); 208 } 209 210 Block.blocksList[var7].onBlockDestroyedByExplosion(this.worldObj, var4, var5, var6); 211 } 212 } 213 } 214 215 if (this.isFlaming) 216 { 217 var2 = this.field_77281_g.iterator(); 218 219 while (var2.hasNext()) 220 { 221 var3 = (ChunkPosition)var2.next(); 222 var4 = var3.x; 223 var5 = var3.y; 224 var6 = var3.z; 225 var7 = this.worldObj.getBlockId(var4, var5, var6); 226 int var24 = this.worldObj.getBlockId(var4, var5 - 1, var6); 227 228 if (var7 == 0 && Block.opaqueCubeLookup[var24] && this.explosionRNG.nextInt(3) == 0) 229 { 230 this.worldObj.setBlockWithNotify(var4, var5, var6, Block.fire.blockID); 231 } 232 } 233 } 234 } 235 236 public Map func_77277_b() 237 { 238 return this.field_77288_k; 239 } 240 }