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 private int field_77289_h = 16; 016 private Random explosionRNG = new Random(); 017 private World worldObj; 018 public double explosionX; 019 public double explosionY; 020 public double explosionZ; 021 public Entity exploder; 022 public float explosionSize; 023 public List field_77281_g = new ArrayList(); 024 private Map field_77288_k = new HashMap(); 025 026 public Explosion(World par1World, Entity par2Entity, double par3, double par5, double par7, float par9) 027 { 028 this.worldObj = par1World; 029 this.exploder = par2Entity; 030 this.explosionSize = par9; 031 this.explosionX = par3; 032 this.explosionY = par5; 033 this.explosionZ = par7; 034 } 035 036 /** 037 * Does the first part of the explosion (destroy blocks) 038 */ 039 public void doExplosionA() 040 { 041 float var1 = this.explosionSize; 042 HashSet var2 = new HashSet(); 043 int var3; 044 int var4; 045 int var5; 046 double var15; 047 double var17; 048 double var19; 049 050 for (var3 = 0; var3 < this.field_77289_h; ++var3) 051 { 052 for (var4 = 0; var4 < this.field_77289_h; ++var4) 053 { 054 for (var5 = 0; var5 < this.field_77289_h; ++var5) 055 { 056 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) 057 { 058 double var6 = (double)((float)var3 / ((float)this.field_77289_h - 1.0F) * 2.0F - 1.0F); 059 double var8 = (double)((float)var4 / ((float)this.field_77289_h - 1.0F) * 2.0F - 1.0F); 060 double var10 = (double)((float)var5 / ((float)this.field_77289_h - 1.0F) * 2.0F - 1.0F); 061 double var12 = Math.sqrt(var6 * var6 + var8 * var8 + var10 * var10); 062 var6 /= var12; 063 var8 /= var12; 064 var10 /= var12; 065 float var14 = this.explosionSize * (0.7F + this.worldObj.rand.nextFloat() * 0.6F); 066 var15 = this.explosionX; 067 var17 = this.explosionY; 068 var19 = this.explosionZ; 069 070 for (float var21 = 0.3F; var14 > 0.0F; var14 -= var21 * 0.75F) 071 { 072 int var22 = MathHelper.floor_double(var15); 073 int var23 = MathHelper.floor_double(var17); 074 int var24 = MathHelper.floor_double(var19); 075 int var25 = this.worldObj.getBlockId(var22, var23, var24); 076 077 if (var25 > 0) 078 { 079 var14 -= (Block.blocksList[var25].getExplosionResistance(this.exploder, worldObj, var22, var23, var24, explosionX, explosionY, explosionZ) + 0.3F) * var21; 080 } 081 082 if (var14 > 0.0F) 083 { 084 var2.add(new ChunkPosition(var22, var23, var24)); 085 } 086 087 var15 += var6 * (double)var21; 088 var17 += var8 * (double)var21; 089 var19 += var10 * (double)var21; 090 } 091 } 092 } 093 } 094 } 095 096 this.field_77281_g.addAll(var2); 097 this.explosionSize *= 2.0F; 098 var3 = MathHelper.floor_double(this.explosionX - (double)this.explosionSize - 1.0D); 099 var4 = MathHelper.floor_double(this.explosionX + (double)this.explosionSize + 1.0D); 100 var5 = MathHelper.floor_double(this.explosionY - (double)this.explosionSize - 1.0D); 101 int var27 = MathHelper.floor_double(this.explosionY + (double)this.explosionSize + 1.0D); 102 int var7 = MathHelper.floor_double(this.explosionZ - (double)this.explosionSize - 1.0D); 103 int var28 = MathHelper.floor_double(this.explosionZ + (double)this.explosionSize + 1.0D); 104 List var9 = this.worldObj.getEntitiesWithinAABBExcludingEntity(this.exploder, AxisAlignedBB.getAABBPool().addOrModifyAABBInPool((double)var3, (double)var5, (double)var7, (double)var4, (double)var27, (double)var28)); 105 Vec3 var29 = Vec3.getVec3Pool().getVecFromPool(this.explosionX, this.explosionY, this.explosionZ); 106 107 for (int var11 = 0; var11 < var9.size(); ++var11) 108 { 109 Entity var30 = (Entity)var9.get(var11); 110 double var13 = var30.getDistance(this.explosionX, this.explosionY, this.explosionZ) / (double)this.explosionSize; 111 112 if (var13 <= 1.0D) 113 { 114 var15 = var30.posX - this.explosionX; 115 var17 = var30.posY + (double)var30.getEyeHeight() - this.explosionY; 116 var19 = var30.posZ - this.explosionZ; 117 double var32 = (double)MathHelper.sqrt_double(var15 * var15 + var17 * var17 + var19 * var19); 118 119 if (var32 != 0.0D) 120 { 121 var15 /= var32; 122 var17 /= var32; 123 var19 /= var32; 124 double var31 = (double)this.worldObj.getBlockDensity(var29, var30.boundingBox); 125 double var33 = (1.0D - var13) * var31; 126 var30.attackEntityFrom(DamageSource.explosion, (int)((var33 * var33 + var33) / 2.0D * 8.0D * (double)this.explosionSize + 1.0D)); 127 var30.motionX += var15 * var33; 128 var30.motionY += var17 * var33; 129 var30.motionZ += var19 * var33; 130 131 if (var30 instanceof EntityPlayer) 132 { 133 this.field_77288_k.put((EntityPlayer)var30, Vec3.getVec3Pool().getVecFromPool(var15 * var33, var17 * var33, var19 * var33)); 134 } 135 } 136 } 137 } 138 139 this.explosionSize = var1; 140 } 141 142 /** 143 * Does the second part of the explosion (sound, particles, drop spawn) 144 */ 145 public void doExplosionB(boolean par1) 146 { 147 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); 148 this.worldObj.spawnParticle("hugeexplosion", this.explosionX, this.explosionY, this.explosionZ, 0.0D, 0.0D, 0.0D); 149 Iterator var2 = this.field_77281_g.iterator(); 150 ChunkPosition var3; 151 int var4; 152 int var5; 153 int var6; 154 int var7; 155 156 while (var2.hasNext()) 157 { 158 var3 = (ChunkPosition)var2.next(); 159 var4 = var3.x; 160 var5 = var3.y; 161 var6 = var3.z; 162 var7 = this.worldObj.getBlockId(var4, var5, var6); 163 164 if (par1) 165 { 166 double var8 = (double)((float)var4 + this.worldObj.rand.nextFloat()); 167 double var10 = (double)((float)var5 + this.worldObj.rand.nextFloat()); 168 double var12 = (double)((float)var6 + this.worldObj.rand.nextFloat()); 169 double var14 = var8 - this.explosionX; 170 double var16 = var10 - this.explosionY; 171 double var18 = var12 - this.explosionZ; 172 double var20 = (double)MathHelper.sqrt_double(var14 * var14 + var16 * var16 + var18 * var18); 173 var14 /= var20; 174 var16 /= var20; 175 var18 /= var20; 176 double var22 = 0.5D / (var20 / (double)this.explosionSize + 0.1D); 177 var22 *= (double)(this.worldObj.rand.nextFloat() * this.worldObj.rand.nextFloat() + 0.3F); 178 var14 *= var22; 179 var16 *= var22; 180 var18 *= var22; 181 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); 182 this.worldObj.spawnParticle("smoke", var8, var10, var12, var14, var16, var18); 183 } 184 185 if (var7 > 0) 186 { 187 Block.blocksList[var7].dropBlockAsItemWithChance(this.worldObj, var4, var5, var6, this.worldObj.getBlockMetadata(var4, var5, var6), 0.3F, 0); 188 189 if (this.worldObj.setBlockAndMetadataWithUpdate(var4, var5, var6, 0, 0, this.worldObj.isRemote)) 190 { 191 this.worldObj.notifyBlocksOfNeighborChange(var4, var5, var6, 0); 192 } 193 194 Block.blocksList[var7].onBlockDestroyedByExplosion(this.worldObj, var4, var5, var6); 195 } 196 } 197 198 if (this.isFlaming) 199 { 200 var2 = this.field_77281_g.iterator(); 201 202 while (var2.hasNext()) 203 { 204 var3 = (ChunkPosition)var2.next(); 205 var4 = var3.x; 206 var5 = var3.y; 207 var6 = var3.z; 208 var7 = this.worldObj.getBlockId(var4, var5, var6); 209 int var24 = this.worldObj.getBlockId(var4, var5 - 1, var6); 210 211 if (var7 == 0 && Block.opaqueCubeLookup[var24] && this.explosionRNG.nextInt(3) == 0) 212 { 213 this.worldObj.setBlockWithNotify(var4, var5, var6, Block.fire.blockID); 214 } 215 } 216 } 217 } 218 219 public Map func_77277_b() 220 { 221 return this.field_77288_k; 222 } 223 }