package net.minecraft.world.gen.feature;
import java.util.Random;
import net.minecraft.block.Block;
import net.minecraft.util.MathHelper;
import net.minecraft.world.World;
public class WorldGenBigTree extends WorldGenerator
{
/**
* Contains three sets of two values that provide complimentary indices for a given 'major' index - 1 and 2 for 0, 0
* and 2 for 1, and 0 and 1 for 2.
*/
static final byte[] otherCoordPairs = new byte[] {(byte)2, (byte)0, (byte)0, (byte)1, (byte)2, (byte)1};
/** random seed for GenBigTree */
Random rand = new Random();
/** Reference to the World object. */
World worldObj;
int[] basePos = new int[] {0, 0, 0};
int heightLimit = 0;
int height;
double heightAttenuation = 0.618D;
double branchDensity = 1.0D;
double branchSlope = 0.381D;
double scaleWidth = 1.0D;
double leafDensity = 1.0D;
/**
* Currently always 1, can be set to 2 in the class constructor to generate a double-sized tree trunk for big trees.
*/
int trunkSize = 1;
/**
* Sets the limit of the random value used to initialize the height limit.
*/
int heightLimitLimit = 12;
/**
* Sets the distance limit for how far away the generator will populate leaves from the base leaf node.
*/
int leafDistanceLimit = 4;
/** Contains a list of a points at which to generate groups of leaves. */
int[][] leafNodes;
public WorldGenBigTree(boolean par1)
{
super(par1);
}
/**
* Generates a list of leaf nodes for the tree, to be populated by generateLeaves.
*/
void generateLeafNodeList()
{
this.height = (int)((double)this.heightLimit * this.heightAttenuation);
if (this.height >= this.heightLimit)
{
this.height = this.heightLimit - 1;
}
int var1 = (int)(1.382D + Math.pow(this.leafDensity * (double)this.heightLimit / 13.0D, 2.0D));
if (var1 < 1)
{
var1 = 1;
}
int[][] var2 = new int[var1 * this.heightLimit][4];
int var3 = this.basePos[1] + this.heightLimit - this.leafDistanceLimit;
int var4 = 1;
int var5 = this.basePos[1] + this.height;
int var6 = var3 - this.basePos[1];
var2[0][0] = this.basePos[0];
var2[0][1] = var3;
var2[0][2] = this.basePos[2];
var2[0][3] = var5;
--var3;
while (var6 >= 0)
{
int var7 = 0;
float var8 = this.layerSize(var6);
if (var8 < 0.0F)
{
--var3;
--var6;
}
else
{
for (double var9 = 0.5D; var7 < var1; ++var7)
{
double var11 = this.scaleWidth * (double)var8 * ((double)this.rand.nextFloat() + 0.328D);
double var13 = (double)this.rand.nextFloat() * 2.0D * Math.PI;
int var15 = MathHelper.floor_double(var11 * Math.sin(var13) + (double)this.basePos[0] + var9);
int var16 = MathHelper.floor_double(var11 * Math.cos(var13) + (double)this.basePos[2] + var9);
int[] var17 = new int[] {var15, var3, var16};
int[] var18 = new int[] {var15, var3 + this.leafDistanceLimit, var16};
if (this.checkBlockLine(var17, var18) == -1)
{
int[] var19 = new int[] {this.basePos[0], this.basePos[1], this.basePos[2]};
double var20 = Math.sqrt(Math.pow((double)Math.abs(this.basePos[0] - var17[0]), 2.0D) + Math.pow((double)Math.abs(this.basePos[2] - var17[2]), 2.0D));
double var22 = var20 * this.branchSlope;
if ((double)var17[1] - var22 > (double)var5)
{
var19[1] = var5;
}
else
{
var19[1] = (int)((double)var17[1] - var22);
}
if (this.checkBlockLine(var19, var17) == -1)
{
var2[var4][0] = var15;
var2[var4][1] = var3;
var2[var4][2] = var16;
var2[var4][3] = var19[1];
++var4;
}
}
}
--var3;
--var6;
}
}
this.leafNodes = new int[var4][4];
System.arraycopy(var2, 0, this.leafNodes, 0, var4);
}
void genTreeLayer(int par1, int par2, int par3, float par4, byte par5, int par6)
{
int var7 = (int)((double)par4 + 0.618D);
byte var8 = otherCoordPairs[par5];
byte var9 = otherCoordPairs[par5 + 3];
int[] var10 = new int[] {par1, par2, par3};
int[] var11 = new int[] {0, 0, 0};
int var12 = -var7;
int var13 = -var7;
for (var11[par5] = var10[par5]; var12 <= var7; ++var12)
{
var11[var8] = var10[var8] + var12;
var13 = -var7;
while (var13 <= var7)
{
double var15 = Math.pow((double)Math.abs(var12) + 0.5D, 2.0D) + Math.pow((double)Math.abs(var13) + 0.5D, 2.0D);
if (var15 > (double)(par4 * par4))
{
++var13;
}
else
{
var11[var9] = var10[var9] + var13;
int var14 = this.worldObj.getBlockId(var11[0], var11[1], var11[2]);
if (var14 != 0 && var14 != Block.leaves.blockID)
{
++var13;
}
else
{
this.setBlockAndMetadata(this.worldObj, var11[0], var11[1], var11[2], par6, 0);
++var13;
}
}
}
}
}
/**
* Gets the rough size of a layer of the tree.
*/
float layerSize(int par1)
{
if ((double)par1 < (double)((float)this.heightLimit) * 0.3D)
{
return -1.618F;
}
else
{
float var2 = (float)this.heightLimit / 2.0F;
float var3 = (float)this.heightLimit / 2.0F - (float)par1;
float var4;
if (var3 == 0.0F)
{
var4 = var2;
}
else if (Math.abs(var3) >= var2)
{
var4 = 0.0F;
}
else
{
var4 = (float)Math.sqrt(Math.pow((double)Math.abs(var2), 2.0D) - Math.pow((double)Math.abs(var3), 2.0D));
}
var4 *= 0.5F;
return var4;
}
}
float leafSize(int par1)
{
return par1 >= 0 && par1 < this.leafDistanceLimit ? (par1 != 0 && par1 != this.leafDistanceLimit - 1 ? 3.0F : 2.0F) : -1.0F;
}
/**
* Generates the leaves surrounding an individual entry in the leafNodes list.
*/
void generateLeafNode(int par1, int par2, int par3)
{
int var4 = par2;
for (int var5 = par2 + this.leafDistanceLimit; var4 < var5; ++var4)
{
float var6 = this.leafSize(var4 - par2);
this.genTreeLayer(par1, var4, par3, var6, (byte)1, Block.leaves.blockID);
}
}
/**
* Places a line of the specified block ID into the world from the first coordinate triplet to the second.
*/
void placeBlockLine(int[] par1ArrayOfInteger, int[] par2ArrayOfInteger, int par3)
{
int[] var4 = new int[] {0, 0, 0};
byte var5 = 0;
byte var6;
for (var6 = 0; var5 < 3; ++var5)
{
var4[var5] = par2ArrayOfInteger[var5] - par1ArrayOfInteger[var5];
if (Math.abs(var4[var5]) > Math.abs(var4[var6]))
{
var6 = var5;
}
}
if (var4[var6] != 0)
{
byte var7 = otherCoordPairs[var6];
byte var8 = otherCoordPairs[var6 + 3];
byte var9;
if (var4[var6] > 0)
{
var9 = 1;
}
else
{
var9 = -1;
}
double var10 = (double)var4[var7] / (double)var4[var6];
double var12 = (double)var4[var8] / (double)var4[var6];
int[] var14 = new int[] {0, 0, 0};
int var15 = 0;
for (int var16 = var4[var6] + var9; var15 != var16; var15 += var9)
{
var14[var6] = MathHelper.floor_double((double)(par1ArrayOfInteger[var6] + var15) + 0.5D);
var14[var7] = MathHelper.floor_double((double)par1ArrayOfInteger[var7] + (double)var15 * var10 + 0.5D);
var14[var8] = MathHelper.floor_double((double)par1ArrayOfInteger[var8] + (double)var15 * var12 + 0.5D);
byte var17 = 0;
int var18 = Math.abs(var14[0] - par1ArrayOfInteger[0]);
int var19 = Math.abs(var14[2] - par1ArrayOfInteger[2]);
int var20 = Math.max(var18, var19);
if (var20 > 0)
{
if (var18 == var20)
{
var17 = 4;
}
else if (var19 == var20)
{
var17 = 8;
}
}
this.setBlockAndMetadata(this.worldObj, var14[0], var14[1], var14[2], par3, var17);
}
}
}
/**
* Generates the leaf portion of the tree as specified by the leafNodes list.
*/
void generateLeaves()
{
int var1 = 0;
for (int var2 = this.leafNodes.length; var1 < var2; ++var1)
{
int var3 = this.leafNodes[var1][0];
int var4 = this.leafNodes[var1][1];
int var5 = this.leafNodes[var1][2];
this.generateLeafNode(var3, var4, var5);
}
}
/**
* Indicates whether or not a leaf node requires additional wood to be added to preserve integrity.
*/
boolean leafNodeNeedsBase(int par1)
{
return (double)par1 >= (double)this.heightLimit * 0.2D;
}
/**
* Places the trunk for the big tree that is being generated. Able to generate double-sized trunks by changing a
* field that is always 1 to 2.
*/
void generateTrunk()
{
int var1 = this.basePos[0];
int var2 = this.basePos[1];
int var3 = this.basePos[1] + this.height;
int var4 = this.basePos[2];
int[] var5 = new int[] {var1, var2, var4};
int[] var6 = new int[] {var1, var3, var4};
this.placeBlockLine(var5, var6, Block.wood.blockID);
if (this.trunkSize == 2)
{
++var5[0];
++var6[0];
this.placeBlockLine(var5, var6, Block.wood.blockID);
++var5[2];
++var6[2];
this.placeBlockLine(var5, var6, Block.wood.blockID);
var5[0] += -1;
var6[0] += -1;
this.placeBlockLine(var5, var6, Block.wood.blockID);
}
}
/**
* Generates additional wood blocks to fill out the bases of different leaf nodes that would otherwise degrade.
*/
void generateLeafNodeBases()
{
int var1 = 0;
int var2 = this.leafNodes.length;
for (int[] var3 = new int[] {this.basePos[0], this.basePos[1], this.basePos[2]}; var1 < var2; ++var1)
{
int[] var4 = this.leafNodes[var1];
int[] var5 = new int[] {var4[0], var4[1], var4[2]};
var3[1] = var4[3];
int var6 = var3[1] - this.basePos[1];
if (this.leafNodeNeedsBase(var6))
{
this.placeBlockLine(var3, var5, (byte)Block.wood.blockID);
}
}
}
/**
* Checks a line of blocks in the world from the first coordinate to triplet to the second, returning the distance
* (in blocks) before a non-air, non-leaf block is encountered and/or the end is encountered.
*/
int checkBlockLine(int[] par1ArrayOfInteger, int[] par2ArrayOfInteger)
{
int[] var3 = new int[] {0, 0, 0};
byte var4 = 0;
byte var5;
for (var5 = 0; var4 < 3; ++var4)
{
var3[var4] = par2ArrayOfInteger[var4] - par1ArrayOfInteger[var4];
if (Math.abs(var3[var4]) > Math.abs(var3[var5]))
{
var5 = var4;
}
}
if (var3[var5] == 0)
{
return -1;
}
else
{
byte var6 = otherCoordPairs[var5];
byte var7 = otherCoordPairs[var5 + 3];
byte var8;
if (var3[var5] > 0)
{
var8 = 1;
}
else
{
var8 = -1;
}
double var9 = (double)var3[var6] / (double)var3[var5];
double var11 = (double)var3[var7] / (double)var3[var5];
int[] var13 = new int[] {0, 0, 0};
int var14 = 0;
int var15;
for (var15 = var3[var5] + var8; var14 != var15; var14 += var8)
{
var13[var5] = par1ArrayOfInteger[var5] + var14;
var13[var6] = MathHelper.floor_double((double)par1ArrayOfInteger[var6] + (double)var14 * var9);
var13[var7] = MathHelper.floor_double((double)par1ArrayOfInteger[var7] + (double)var14 * var11);
int var16 = this.worldObj.getBlockId(var13[0], var13[1], var13[2]);
if (var16 != 0 && var16 != Block.leaves.blockID)
{
break;
}
}
return var14 == var15 ? -1 : Math.abs(var14);
}
}
/**
* Returns a boolean indicating whether or not the current location for the tree, spanning basePos to to the height
* limit, is valid.
*/
boolean validTreeLocation()
{
int[] var1 = new int[] {this.basePos[0], this.basePos[1], this.basePos[2]};
int[] var2 = new int[] {this.basePos[0], this.basePos[1] + this.heightLimit - 1, this.basePos[2]};
int var3 = this.worldObj.getBlockId(this.basePos[0], this.basePos[1] - 1, this.basePos[2]);
if (var3 != 2 && var3 != 3)
{
return false;
}
else
{
int var4 = this.checkBlockLine(var1, var2);
if (var4 == -1)
{
return true;
}
else if (var4 < 6)
{
return false;
}
else
{
this.heightLimit = var4;
return true;
}
}
}
/**
* Rescales the generator settings, only used in WorldGenBigTree
*/
public void setScale(double par1, double par3, double par5)
{
this.heightLimitLimit = (int)(par1 * 12.0D);
if (par1 > 0.5D)
{
this.leafDistanceLimit = 5;
}
this.scaleWidth = par3;
this.leafDensity = par5;
}
public boolean generate(World par1World, Random par2Random, int par3, int par4, int par5)
{
this.worldObj = par1World;
long var6 = par2Random.nextLong();
this.rand.setSeed(var6);
this.basePos[0] = par3;
this.basePos[1] = par4;
this.basePos[2] = par5;
if (this.heightLimit == 0)
{
this.heightLimit = 5 + this.rand.nextInt(this.heightLimitLimit);
}
if (!this.validTreeLocation())
{
return false;
}
else
{
this.generateLeafNodeList();
this.generateLeaves();
this.generateTrunk();
this.generateLeafNodeBases();
return true;
}
}
}