001 package net.minecraft.world.gen;
002
003 import java.util.Random;
004 import net.minecraft.block.Block;
005 import net.minecraft.util.MathHelper;
006 import net.minecraft.world.World;
007
008 public class MapGenRavine extends MapGenBase
009 {
010 private float[] field_75046_d = new float[1024];
011
012 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)
013 {
014 Random var19 = new Random(par1);
015 double var20 = (double)(par3 * 16 + 8);
016 double var22 = (double)(par4 * 16 + 8);
017 float var24 = 0.0F;
018 float var25 = 0.0F;
019
020 if (par16 <= 0)
021 {
022 int var26 = this.range * 16 - 16;
023 par16 = var26 - var19.nextInt(var26 / 4);
024 }
025
026 boolean var54 = false;
027
028 if (par15 == -1)
029 {
030 par15 = par16 / 2;
031 var54 = true;
032 }
033
034 float var27 = 1.0F;
035
036 for (int var28 = 0; var28 < 128; ++var28)
037 {
038 if (var28 == 0 || var19.nextInt(3) == 0)
039 {
040 var27 = 1.0F + var19.nextFloat() * var19.nextFloat() * 1.0F;
041 }
042
043 this.field_75046_d[var28] = var27 * var27;
044 }
045
046 for (; par15 < par16; ++par15)
047 {
048 double var53 = 1.5D + (double)(MathHelper.sin((float)par15 * (float)Math.PI / (float)par16) * par12 * 1.0F);
049 double var30 = var53 * par17;
050 var53 *= (double)var19.nextFloat() * 0.25D + 0.75D;
051 var30 *= (double)var19.nextFloat() * 0.25D + 0.75D;
052 float var32 = MathHelper.cos(par14);
053 float var33 = MathHelper.sin(par14);
054 par6 += (double)(MathHelper.cos(par13) * var32);
055 par8 += (double)var33;
056 par10 += (double)(MathHelper.sin(par13) * var32);
057 par14 *= 0.7F;
058 par14 += var25 * 0.05F;
059 par13 += var24 * 0.05F;
060 var25 *= 0.8F;
061 var24 *= 0.5F;
062 var25 += (var19.nextFloat() - var19.nextFloat()) * var19.nextFloat() * 2.0F;
063 var24 += (var19.nextFloat() - var19.nextFloat()) * var19.nextFloat() * 4.0F;
064
065 if (var54 || var19.nextInt(4) != 0)
066 {
067 double var34 = par6 - var20;
068 double var36 = par10 - var22;
069 double var38 = (double)(par16 - par15);
070 double var40 = (double)(par12 + 2.0F + 16.0F);
071
072 if (var34 * var34 + var36 * var36 - var38 * var38 > var40 * var40)
073 {
074 return;
075 }
076
077 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)
078 {
079 int var56 = MathHelper.floor_double(par6 - var53) - par3 * 16 - 1;
080 int var35 = MathHelper.floor_double(par6 + var53) - par3 * 16 + 1;
081 int var55 = MathHelper.floor_double(par8 - var30) - 1;
082 int var37 = MathHelper.floor_double(par8 + var30) + 1;
083 int var57 = MathHelper.floor_double(par10 - var53) - par4 * 16 - 1;
084 int var39 = MathHelper.floor_double(par10 + var53) - par4 * 16 + 1;
085
086 if (var56 < 0)
087 {
088 var56 = 0;
089 }
090
091 if (var35 > 16)
092 {
093 var35 = 16;
094 }
095
096 if (var55 < 1)
097 {
098 var55 = 1;
099 }
100
101 if (var37 > 120)
102 {
103 var37 = 120;
104 }
105
106 if (var57 < 0)
107 {
108 var57 = 0;
109 }
110
111 if (var39 > 16)
112 {
113 var39 = 16;
114 }
115
116 boolean var58 = false;
117 int var41;
118 int var44;
119
120 for (var41 = var56; !var58 && var41 < var35; ++var41)
121 {
122 for (int var42 = var57; !var58 && var42 < var39; ++var42)
123 {
124 for (int var43 = var37 + 1; !var58 && var43 >= var55 - 1; --var43)
125 {
126 var44 = (var41 * 16 + var42) * 128 + var43;
127
128 if (var43 >= 0 && var43 < 128)
129 {
130 if (par5ArrayOfByte[var44] == Block.waterMoving.blockID || par5ArrayOfByte[var44] == Block.waterStill.blockID)
131 {
132 var58 = true;
133 }
134
135 if (var43 != var55 - 1 && var41 != var56 && var41 != var35 - 1 && var42 != var57 && var42 != var39 - 1)
136 {
137 var43 = var55;
138 }
139 }
140 }
141 }
142 }
143
144 if (!var58)
145 {
146 for (var41 = var56; var41 < var35; ++var41)
147 {
148 double var59 = ((double)(var41 + par3 * 16) + 0.5D - par6) / var53;
149
150 for (var44 = var57; var44 < var39; ++var44)
151 {
152 double var45 = ((double)(var44 + par4 * 16) + 0.5D - par10) / var53;
153 int var47 = (var41 * 16 + var44) * 128 + var37;
154 boolean var48 = false;
155
156 if (var59 * var59 + var45 * var45 < 1.0D)
157 {
158 for (int var49 = var37 - 1; var49 >= var55; --var49)
159 {
160 double var50 = ((double)var49 + 0.5D - par8) / var30;
161
162 if ((var59 * var59 + var45 * var45) * (double)this.field_75046_d[var49] + var50 * var50 / 6.0D < 1.0D)
163 {
164 byte var52 = par5ArrayOfByte[var47];
165
166 if (var52 == Block.grass.blockID)
167 {
168 var48 = true;
169 }
170
171 if (var52 == Block.stone.blockID || var52 == Block.dirt.blockID || var52 == Block.grass.blockID)
172 {
173 if (var49 < 10)
174 {
175 par5ArrayOfByte[var47] = (byte)Block.lavaMoving.blockID;
176 }
177 else
178 {
179 par5ArrayOfByte[var47] = 0;
180
181 if (var48 && par5ArrayOfByte[var47 - 1] == Block.dirt.blockID)
182 {
183 par5ArrayOfByte[var47 - 1] = this.worldObj.getBiomeGenForCoords(var41 + par3 * 16, var44 + par4 * 16).topBlock;
184 }
185 }
186 }
187 }
188
189 --var47;
190 }
191 }
192 }
193 }
194
195 if (var54)
196 {
197 break;
198 }
199 }
200 }
201 }
202 }
203 }
204
205 /**
206 * Recursively called by generate() (generate) and optionally by itself.
207 */
208 protected void recursiveGenerate(World par1World, int par2, int par3, int par4, int par5, byte[] par6ArrayOfByte)
209 {
210 if (this.rand.nextInt(50) == 0)
211 {
212 double var7 = (double)(par2 * 16 + this.rand.nextInt(16));
213 double var9 = (double)(this.rand.nextInt(this.rand.nextInt(40) + 8) + 20);
214 double var11 = (double)(par3 * 16 + this.rand.nextInt(16));
215 byte var13 = 1;
216
217 for (int var14 = 0; var14 < var13; ++var14)
218 {
219 float var15 = this.rand.nextFloat() * (float)Math.PI * 2.0F;
220 float var16 = (this.rand.nextFloat() - 0.5F) * 2.0F / 8.0F;
221 float var17 = (this.rand.nextFloat() * 2.0F + this.rand.nextFloat()) * 2.0F;
222 this.generateRavine(this.rand.nextLong(), par4, par5, par6ArrayOfByte, var7, var9, var11, var17, var15, var16, 0, 0, 3.0D);
223 }
224 }
225 }
226 }