001 package net.minecraft.src; 002 003 import java.util.Random; 004 005 public class MapGenRavine extends MapGenBase 006 { 007 private float[] field_75046_d = new float[1024]; 008 009 protected void generateRavine(long par1, int par3, int par4, byte[] par5ArrayOfByte, double par6, double par8, double par10, float par12, float par13, float par14, int par15, int par16, double par17) 010 { 011 Random var19 = new Random(par1); 012 double var20 = (double)(par3 * 16 + 8); 013 double var22 = (double)(par4 * 16 + 8); 014 float var24 = 0.0F; 015 float var25 = 0.0F; 016 017 if (par16 <= 0) 018 { 019 int var26 = this.range * 16 - 16; 020 par16 = var26 - var19.nextInt(var26 / 4); 021 } 022 023 boolean var54 = false; 024 025 if (par15 == -1) 026 { 027 par15 = par16 / 2; 028 var54 = true; 029 } 030 031 float var27 = 1.0F; 032 033 for (int var28 = 0; var28 < 128; ++var28) 034 { 035 if (var28 == 0 || var19.nextInt(3) == 0) 036 { 037 var27 = 1.0F + var19.nextFloat() * var19.nextFloat() * 1.0F; 038 } 039 040 this.field_75046_d[var28] = var27 * var27; 041 } 042 043 for (; par15 < par16; ++par15) 044 { 045 double var53 = 1.5D + (double)(MathHelper.sin((float)par15 * (float)Math.PI / (float)par16) * par12 * 1.0F); 046 double var30 = var53 * par17; 047 var53 *= (double)var19.nextFloat() * 0.25D + 0.75D; 048 var30 *= (double)var19.nextFloat() * 0.25D + 0.75D; 049 float var32 = MathHelper.cos(par14); 050 float var33 = MathHelper.sin(par14); 051 par6 += (double)(MathHelper.cos(par13) * var32); 052 par8 += (double)var33; 053 par10 += (double)(MathHelper.sin(par13) * var32); 054 par14 *= 0.7F; 055 par14 += var25 * 0.05F; 056 par13 += var24 * 0.05F; 057 var25 *= 0.8F; 058 var24 *= 0.5F; 059 var25 += (var19.nextFloat() - var19.nextFloat()) * var19.nextFloat() * 2.0F; 060 var24 += (var19.nextFloat() - var19.nextFloat()) * var19.nextFloat() * 4.0F; 061 062 if (var54 || var19.nextInt(4) != 0) 063 { 064 double var34 = par6 - var20; 065 double var36 = par10 - var22; 066 double var38 = (double)(par16 - par15); 067 double var40 = (double)(par12 + 2.0F + 16.0F); 068 069 if (var34 * var34 + var36 * var36 - var38 * var38 > var40 * var40) 070 { 071 return; 072 } 073 074 if (par6 >= var20 - 16.0D - var53 * 2.0D && par10 >= var22 - 16.0D - var53 * 2.0D && par6 <= var20 + 16.0D + var53 * 2.0D && par10 <= var22 + 16.0D + var53 * 2.0D) 075 { 076 int var56 = MathHelper.floor_double(par6 - var53) - par3 * 16 - 1; 077 int var35 = MathHelper.floor_double(par6 + var53) - par3 * 16 + 1; 078 int var55 = MathHelper.floor_double(par8 - var30) - 1; 079 int var37 = MathHelper.floor_double(par8 + var30) + 1; 080 int var57 = MathHelper.floor_double(par10 - var53) - par4 * 16 - 1; 081 int var39 = MathHelper.floor_double(par10 + var53) - par4 * 16 + 1; 082 083 if (var56 < 0) 084 { 085 var56 = 0; 086 } 087 088 if (var35 > 16) 089 { 090 var35 = 16; 091 } 092 093 if (var55 < 1) 094 { 095 var55 = 1; 096 } 097 098 if (var37 > 120) 099 { 100 var37 = 120; 101 } 102 103 if (var57 < 0) 104 { 105 var57 = 0; 106 } 107 108 if (var39 > 16) 109 { 110 var39 = 16; 111 } 112 113 boolean var58 = false; 114 int var41; 115 int var44; 116 117 for (var41 = var56; !var58 && var41 < var35; ++var41) 118 { 119 for (int var42 = var57; !var58 && var42 < var39; ++var42) 120 { 121 for (int var43 = var37 + 1; !var58 && var43 >= var55 - 1; --var43) 122 { 123 var44 = (var41 * 16 + var42) * 128 + var43; 124 125 if (var43 >= 0 && var43 < 128) 126 { 127 if (par5ArrayOfByte[var44] == Block.waterMoving.blockID || par5ArrayOfByte[var44] == Block.waterStill.blockID) 128 { 129 var58 = true; 130 } 131 132 if (var43 != var55 - 1 && var41 != var56 && var41 != var35 - 1 && var42 != var57 && var42 != var39 - 1) 133 { 134 var43 = var55; 135 } 136 } 137 } 138 } 139 } 140 141 if (!var58) 142 { 143 for (var41 = var56; var41 < var35; ++var41) 144 { 145 double var59 = ((double)(var41 + par3 * 16) + 0.5D - par6) / var53; 146 147 for (var44 = var57; var44 < var39; ++var44) 148 { 149 double var45 = ((double)(var44 + par4 * 16) + 0.5D - par10) / var53; 150 int var47 = (var41 * 16 + var44) * 128 + var37; 151 boolean var48 = false; 152 153 if (var59 * var59 + var45 * var45 < 1.0D) 154 { 155 for (int var49 = var37 - 1; var49 >= var55; --var49) 156 { 157 double var50 = ((double)var49 + 0.5D - par8) / var30; 158 159 if ((var59 * var59 + var45 * var45) * (double)this.field_75046_d[var49] + var50 * var50 / 6.0D < 1.0D) 160 { 161 byte var52 = par5ArrayOfByte[var47]; 162 163 if (var52 == Block.grass.blockID) 164 { 165 var48 = true; 166 } 167 168 if (var52 == Block.stone.blockID || var52 == Block.dirt.blockID || var52 == Block.grass.blockID) 169 { 170 if (var49 < 10) 171 { 172 par5ArrayOfByte[var47] = (byte)Block.lavaMoving.blockID; 173 } 174 else 175 { 176 par5ArrayOfByte[var47] = 0; 177 178 if (var48 && par5ArrayOfByte[var47 - 1] == Block.dirt.blockID) 179 { 180 par5ArrayOfByte[var47 - 1] = this.worldObj.getBiomeGenForCoords(var41 + par3 * 16, var44 + par4 * 16).topBlock; 181 } 182 } 183 } 184 } 185 186 --var47; 187 } 188 } 189 } 190 } 191 192 if (var54) 193 { 194 break; 195 } 196 } 197 } 198 } 199 } 200 } 201 202 /** 203 * Recursively called by generate() (generate) and optionally by itself. 204 */ 205 protected void recursiveGenerate(World par1World, int par2, int par3, int par4, int par5, byte[] par6ArrayOfByte) 206 { 207 if (this.rand.nextInt(50) == 0) 208 { 209 double var7 = (double)(par2 * 16 + this.rand.nextInt(16)); 210 double var9 = (double)(this.rand.nextInt(this.rand.nextInt(40) + 8) + 20); 211 double var11 = (double)(par3 * 16 + this.rand.nextInt(16)); 212 byte var13 = 1; 213 214 for (int var14 = 0; var14 < var13; ++var14) 215 { 216 float var15 = this.rand.nextFloat() * (float)Math.PI * 2.0F; 217 float var16 = (this.rand.nextFloat() - 0.5F) * 2.0F / 8.0F; 218 float var17 = (this.rand.nextFloat() * 2.0F + this.rand.nextFloat()) * 2.0F; 219 this.generateRavine(this.rand.nextLong(), par4, par5, par6ArrayOfByte, var7, var9, var11, var17, var15, var16, 0, 0, 3.0D); 220 } 221 } 222 } 223 }