package net.minecraft.world.gen;
import java.util.Random;
import net.minecraft.block.Block;
import net.minecraft.util.MathHelper;
import net.minecraft.world.World;
public class MapGenRavine extends MapGenBase
{
private float[] field_75046_d = new float[1024];
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)
{
Random var19 = new Random(par1);
double var20 = (double)(par3 * 16 + 8);
double var22 = (double)(par4 * 16 + 8);
float var24 = 0.0F;
float var25 = 0.0F;
if (par16 <= 0)
{
int var26 = this.range * 16 - 16;
par16 = var26 - var19.nextInt(var26 / 4);
}
boolean var54 = false;
if (par15 == -1)
{
par15 = par16 / 2;
var54 = true;
}
float var27 = 1.0F;
for (int var28 = 0; var28 < 128; ++var28)
{
if (var28 == 0 || var19.nextInt(3) == 0)
{
var27 = 1.0F + var19.nextFloat() * var19.nextFloat() * 1.0F;
}
this.field_75046_d[var28] = var27 * var27;
}
for (; par15 < par16; ++par15)
{
double var53 = 1.5D + (double)(MathHelper.sin((float)par15 * (float)Math.PI / (float)par16) * par12 * 1.0F);
double var30 = var53 * par17;
var53 *= (double)var19.nextFloat() * 0.25D + 0.75D;
var30 *= (double)var19.nextFloat() * 0.25D + 0.75D;
float var32 = MathHelper.cos(par14);
float var33 = MathHelper.sin(par14);
par6 += (double)(MathHelper.cos(par13) * var32);
par8 += (double)var33;
par10 += (double)(MathHelper.sin(par13) * var32);
par14 *= 0.7F;
par14 += var25 * 0.05F;
par13 += var24 * 0.05F;
var25 *= 0.8F;
var24 *= 0.5F;
var25 += (var19.nextFloat() - var19.nextFloat()) * var19.nextFloat() * 2.0F;
var24 += (var19.nextFloat() - var19.nextFloat()) * var19.nextFloat() * 4.0F;
if (var54 || var19.nextInt(4) != 0)
{
double var34 = par6 - var20;
double var36 = par10 - var22;
double var38 = (double)(par16 - par15);
double var40 = (double)(par12 + 2.0F + 16.0F);
if (var34 * var34 + var36 * var36 - var38 * var38 > var40 * var40)
{
return;
}
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)
{
int var56 = MathHelper.floor_double(par6 - var53) - par3 * 16 - 1;
int var35 = MathHelper.floor_double(par6 + var53) - par3 * 16 + 1;
int var55 = MathHelper.floor_double(par8 - var30) - 1;
int var37 = MathHelper.floor_double(par8 + var30) + 1;
int var57 = MathHelper.floor_double(par10 - var53) - par4 * 16 - 1;
int var39 = MathHelper.floor_double(par10 + var53) - par4 * 16 + 1;
if (var56 < 0)
{
var56 = 0;
}
if (var35 > 16)
{
var35 = 16;
}
if (var55 < 1)
{
var55 = 1;
}
if (var37 > 120)
{
var37 = 120;
}
if (var57 < 0)
{
var57 = 0;
}
if (var39 > 16)
{
var39 = 16;
}
boolean var58 = false;
int var41;
int var44;
for (var41 = var56; !var58 && var41 < var35; ++var41)
{
for (int var42 = var57; !var58 && var42 < var39; ++var42)
{
for (int var43 = var37 + 1; !var58 && var43 >= var55 - 1; --var43)
{
var44 = (var41 * 16 + var42) * 128 + var43;
if (var43 >= 0 && var43 < 128)
{
if (par5ArrayOfByte[var44] == Block.waterMoving.blockID || par5ArrayOfByte[var44] == Block.waterStill.blockID)
{
var58 = true;
}
if (var43 != var55 - 1 && var41 != var56 && var41 != var35 - 1 && var42 != var57 && var42 != var39 - 1)
{
var43 = var55;
}
}
}
}
}
if (!var58)
{
for (var41 = var56; var41 < var35; ++var41)
{
double var59 = ((double)(var41 + par3 * 16) + 0.5D - par6) / var53;
for (var44 = var57; var44 < var39; ++var44)
{
double var45 = ((double)(var44 + par4 * 16) + 0.5D - par10) / var53;
int var47 = (var41 * 16 + var44) * 128 + var37;
boolean var48 = false;
if (var59 * var59 + var45 * var45 < 1.0D)
{
for (int var49 = var37 - 1; var49 >= var55; --var49)
{
double var50 = ((double)var49 + 0.5D - par8) / var30;
if ((var59 * var59 + var45 * var45) * (double)this.field_75046_d[var49] + var50 * var50 / 6.0D < 1.0D)
{
byte var52 = par5ArrayOfByte[var47];
if (var52 == Block.grass.blockID)
{
var48 = true;
}
if (var52 == Block.stone.blockID || var52 == Block.dirt.blockID || var52 == Block.grass.blockID)
{
if (var49 < 10)
{
par5ArrayOfByte[var47] = (byte)Block.lavaMoving.blockID;
}
else
{
par5ArrayOfByte[var47] = 0;
if (var48 && par5ArrayOfByte[var47 - 1] == Block.dirt.blockID)
{
par5ArrayOfByte[var47 - 1] = this.worldObj.getBiomeGenForCoords(var41 + par3 * 16, var44 + par4 * 16).topBlock;
}
}
}
}
--var47;
}
}
}
}
if (var54)
{
break;
}
}
}
}
}
}
/**
* Recursively called by generate() (generate) and optionally by itself.
*/
protected void recursiveGenerate(World par1World, int par2, int par3, int par4, int par5, byte[] par6ArrayOfByte)
{
if (this.rand.nextInt(50) == 0)
{
double var7 = (double)(par2 * 16 + this.rand.nextInt(16));
double var9 = (double)(this.rand.nextInt(this.rand.nextInt(40) + 8) + 20);
double var11 = (double)(par3 * 16 + this.rand.nextInt(16));
byte var13 = 1;
for (int var14 = 0; var14 < var13; ++var14)
{
float var15 = this.rand.nextFloat() * (float)Math.PI * 2.0F;
float var16 = (this.rand.nextFloat() - 0.5F) * 2.0F / 8.0F;
float var17 = (this.rand.nextFloat() * 2.0F + this.rand.nextFloat()) * 2.0F;
this.generateRavine(this.rand.nextLong(), par4, par5, par6ArrayOfByte, var7, var9, var11, var17, var15, var16, 0, 0, 3.0D);
}
}
}
}