BiomesOPlenty/src/minecraft/biomesoplenty/world/layer/BiomeLayerZoom.java

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2013-05-07 19:33:36 +00:00
package biomesoplenty.world.layer;
public class BiomeLayerZoom extends BiomeLayer
{
public BiomeLayerZoom(long par1, BiomeLayer par3GenLayer)
{
super(par1);
super.parent = par3GenLayer;
}
public int[] getInts(int par1, int par2, int par3, int par4)
{
int i1 = par1 >> 1;
int j1 = par2 >> 1;
int k1 = (par3 >> 1) + 3;
int l1 = (par4 >> 1) + 3;
int[] aint = this.parent.getInts(i1, j1, k1, l1);
int[] aint1 = LayerIntCache.getIntCache(k1 * 2 * l1 * 2);
int i2 = k1 << 1;
int j2;
for (int k2 = 0; k2 < l1 - 1; ++k2)
{
j2 = k2 << 1;
int l2 = j2 * i2;
int i3 = aint[0 + (k2 + 0) * k1];
int j3 = aint[0 + (k2 + 1) * k1];
for (int k3 = 0; k3 < k1 - 1; ++k3)
{
this.initChunkSeed((long)(k3 + i1 << 1), (long)(k2 + j1 << 1));
int l3 = aint[k3 + 1 + (k2 + 0) * k1];
int i4 = aint[k3 + 1 + (k2 + 1) * k1];
aint1[l2] = i3;
aint1[l2++ + i2] = this.choose(i3, j3);
aint1[l2] = this.choose(i3, l3);
aint1[l2++ + i2] = this.modeOrRandom(i3, l3, j3, i4);
i3 = l3;
j3 = i4;
}
}
int[] aint2 = LayerIntCache.getIntCache(par3 * par4);
for (j2 = 0; j2 < par4; ++j2)
{
System.arraycopy(aint1, (j2 + (par2 & 1)) * (k1 << 1) + (par1 & 1), aint2, j2 * par3, par3);
}
return aint2;
}
/**
* Chooses one of the two inputs randomly.
*/
protected int choose(int par1, int par2)
{
return this.nextInt(2) == 0 ? par1 : par2;
}
/**
* returns the mode (most frequently occuring number) or a random number from the 4 integers provided
*/
protected int modeOrRandom(int par1, int par2, int par3, int par4)
{
if (par2 == par3 && par3 == par4)
{
return par2;
}
else if (par1 == par2 && par1 == par3)
{
return par1;
}
else if (par1 == par2 && par1 == par4)
{
return par1;
}
else if (par1 == par3 && par1 == par4)
{
return par1;
}
else if (par1 == par2 && par3 != par4)
{
return par1;
}
else if (par1 == par3 && par2 != par4)
{
return par1;
}
else if (par1 == par4 && par2 != par3)
{
return par1;
}
else if (par2 == par1 && par3 != par4)
{
return par2;
}
else if (par2 == par3 && par1 != par4)
{
return par2;
}
else if (par2 == par4 && par1 != par3)
{
return par2;
}
else if (par3 == par1 && par2 != par4)
{
return par3;
}
else if (par3 == par2 && par1 != par4)
{
return par3;
}
else if (par3 == par4 && par1 != par2)
{
return par3;
}
else if (par4 == par1 && par2 != par3)
{
return par3;
}
else if (par4 == par2 && par1 != par3)
{
return par3;
}
else if (par4 == par3 && par1 != par2)
{
return par3;
}
else
{
int i1 = this.nextInt(4);
return i1 == 0 ? par1 : (i1 == 1 ? par2 : (i1 == 2 ? par3 : par4));
}
}
public static BiomeLayer func_75915_a(long par0, BiomeLayer par2GenLayer, int par3)
{
Object object = par2GenLayer;
for (int k = 0; k < par3; ++k)
{
object = new BiomeLayerZoom(par0 + (long)k, (BiomeLayer)object);
}
return (BiomeLayer)object;
}
}