package net.minecraft.world.gen.feature;
import java.util.Random;
import net.minecraft.block.Block;
import net.minecraft.block.BlockSapling;
import net.minecraft.util.MathHelper;
import net.minecraft.world.World;
import net.minecraftforge.common.ForgeDirection;
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 i = (int)(1.382D + Math.pow(this.leafDensity * (double)this.heightLimit / 13.0D, 2.0D));
if (i < 1)
{
i = 1;
}
int[][] aint = new int[i * this.heightLimit][4];
int j = this.basePos[1] + this.heightLimit - this.leafDistanceLimit;
int k = 1;
int l = this.basePos[1] + this.height;
int i1 = j - this.basePos[1];
aint[0][0] = this.basePos[0];
aint[0][1] = j;
aint[0][2] = this.basePos[2];
aint[0][3] = l;
--j;
while (i1 >= 0)
{
int j1 = 0;
float f = this.layerSize(i1);
if (f < 0.0F)
{
--j;
--i1;
}
else
{
for (double d0 = 0.5D; j1 < i; ++j1)
{
double d1 = this.scaleWidth * (double)f * ((double)this.rand.nextFloat() + 0.328D);
double d2 = (double)this.rand.nextFloat() * 2.0D * Math.PI;
int k1 = MathHelper.floor_double(d1 * Math.sin(d2) + (double)this.basePos[0] + d0);
int l1 = MathHelper.floor_double(d1 * Math.cos(d2) + (double)this.basePos[2] + d0);
int[] aint1 = new int[] {k1, j, l1};
int[] aint2 = new int[] {k1, j + this.leafDistanceLimit, l1};
if (this.checkBlockLine(aint1, aint2) == -1)
{
int[] aint3 = new int[] {this.basePos[0], this.basePos[1], this.basePos[2]};
double d3 = Math.sqrt(Math.pow((double)Math.abs(this.basePos[0] - aint1[0]), 2.0D) + Math.pow((double)Math.abs(this.basePos[2] - aint1[2]), 2.0D));
double d4 = d3 * this.branchSlope;
if ((double)aint1[1] - d4 > (double)l)
{
aint3[1] = l;
}
else
{
aint3[1] = (int)((double)aint1[1] - d4);
}
if (this.checkBlockLine(aint3, aint1) == -1)
{
aint[k][0] = k1;
aint[k][1] = j;
aint[k][2] = l1;
aint[k][3] = aint3[1];
++k;
}
}
}
--j;
--i1;
}
}
this.leafNodes = new int[k][4];
System.arraycopy(aint, 0, this.leafNodes, 0, k);
}
void genTreeLayer(int par1, int par2, int par3, float par4, byte par5, int par6)
{
int i1 = (int)((double)par4 + 0.618D);
byte b1 = otherCoordPairs[par5];
byte b2 = otherCoordPairs[par5 + 3];
int[] aint = new int[] {par1, par2, par3};
int[] aint1 = new int[] {0, 0, 0};
int j1 = -i1;
int k1 = -i1;
for (aint1[par5] = aint[par5]; j1 <= i1; ++j1)
{
aint1[b1] = aint[b1] + j1;
k1 = -i1;
while (k1 <= i1)
{
double d0 = Math.pow((double)Math.abs(j1) + 0.5D, 2.0D) + Math.pow((double)Math.abs(k1) + 0.5D, 2.0D);
if (d0 > (double)(par4 * par4))
{
++k1;
}
else
{
aint1[b2] = aint[b2] + k1;
int l1 = this.worldObj.getBlockId(aint1[0], aint1[1], aint1[2]);
if (l1 != 0 && l1 != Block.leaves.blockID)
{
++k1;
}
else
{
this.setBlockAndMetadata(this.worldObj, aint1[0], aint1[1], aint1[2], par6, 0);
++k1;
}
}
}
}
}
/**
* 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 f = (float)this.heightLimit / 2.0F;
float f1 = (float)this.heightLimit / 2.0F - (float)par1;
float f2;
if (f1 == 0.0F)
{
f2 = f;
}
else if (Math.abs(f1) >= f)
{
f2 = 0.0F;
}
else
{
f2 = (float)Math.sqrt(Math.pow((double)Math.abs(f), 2.0D) - Math.pow((double)Math.abs(f1), 2.0D));
}
f2 *= 0.5F;
return f2;
}
}
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 l = par2;
for (int i1 = par2 + this.leafDistanceLimit; l < i1; ++l)
{
float f = this.leafSize(l - par2);
this.genTreeLayer(par1, l, par3, f, (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[] aint2 = new int[] {0, 0, 0};
byte b0 = 0;
byte b1;
for (b1 = 0; b0 < 3; ++b0)
{
aint2[b0] = par2ArrayOfInteger[b0] - par1ArrayOfInteger[b0];
if (Math.abs(aint2[b0]) > Math.abs(aint2[b1]))
{
b1 = b0;
}
}
if (aint2[b1] != 0)
{
byte b2 = otherCoordPairs[b1];
byte b3 = otherCoordPairs[b1 + 3];
byte b4;
if (aint2[b1] > 0)
{
b4 = 1;
}
else
{
b4 = -1;
}
double d0 = (double)aint2[b2] / (double)aint2[b1];
double d1 = (double)aint2[b3] / (double)aint2[b1];
int[] aint3 = new int[] {0, 0, 0};
int j = 0;
for (int k = aint2[b1] + b4; j != k; j += b4)
{
aint3[b1] = MathHelper.floor_double((double)(par1ArrayOfInteger[b1] + j) + 0.5D);
aint3[b2] = MathHelper.floor_double((double)par1ArrayOfInteger[b2] + (double)j * d0 + 0.5D);
aint3[b3] = MathHelper.floor_double((double)par1ArrayOfInteger[b3] + (double)j * d1 + 0.5D);
byte b5 = 0;
int l = Math.abs(aint3[0] - par1ArrayOfInteger[0]);
int i1 = Math.abs(aint3[2] - par1ArrayOfInteger[2]);
int j1 = Math.max(l, i1);
if (j1 > 0)
{
if (l == j1)
{
b5 = 4;
}
else if (i1 == j1)
{
b5 = 8;
}
}
this.setBlockAndMetadata(this.worldObj, aint3[0], aint3[1], aint3[2], par3, b5);
}
}
}
/**
* Generates the leaf portion of the tree as specified by the leafNodes list.
*/
void generateLeaves()
{
int i = 0;
for (int j = this.leafNodes.length; i < j; ++i)
{
int k = this.leafNodes[i][0];
int l = this.leafNodes[i][1];
int i1 = this.leafNodes[i][2];
this.generateLeafNode(k, l, i1);
}
}
/**
* 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 i = this.basePos[0];
int j = this.basePos[1];
int k = this.basePos[1] + this.height;
int l = this.basePos[2];
int[] aint = new int[] {i, j, l};
int[] aint1 = new int[] {i, k, l};
this.placeBlockLine(aint, aint1, Block.wood.blockID);
if (this.trunkSize == 2)
{
++aint[0];
++aint1[0];
this.placeBlockLine(aint, aint1, Block.wood.blockID);
++aint[2];
++aint1[2];
this.placeBlockLine(aint, aint1, Block.wood.blockID);
aint[0] += -1;
aint1[0] += -1;
this.placeBlockLine(aint, aint1, Block.wood.blockID);
}
}
/**
* Generates additional wood blocks to fill out the bases of different leaf nodes that would otherwise degrade.
*/
void generateLeafNodeBases()
{
int i = 0;
int j = this.leafNodes.length;
for (int[] aint = new int[] {this.basePos[0], this.basePos[1], this.basePos[2]}; i < j; ++i)
{
int[] aint1 = this.leafNodes[i];
int[] aint2 = new int[] {aint1[0], aint1[1], aint1[2]};
aint[1] = aint1[3];
int k = aint[1] - this.basePos[1];
if (this.leafNodeNeedsBase(k))
{
this.placeBlockLine(aint, aint2, (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[] aint2 = new int[] {0, 0, 0};
byte b0 = 0;
byte b1;
for (b1 = 0; b0 < 3; ++b0)
{
aint2[b0] = par2ArrayOfInteger[b0] - par1ArrayOfInteger[b0];
if (Math.abs(aint2[b0]) > Math.abs(aint2[b1]))
{
b1 = b0;
}
}
if (aint2[b1] == 0)
{
return -1;
}
else
{
byte b2 = otherCoordPairs[b1];
byte b3 = otherCoordPairs[b1 + 3];
byte b4;
if (aint2[b1] > 0)
{
b4 = 1;
}
else
{
b4 = -1;
}
double d0 = (double)aint2[b2] / (double)aint2[b1];
double d1 = (double)aint2[b3] / (double)aint2[b1];
int[] aint3 = new int[] {0, 0, 0};
int i = 0;
int j;
for (j = aint2[b1] + b4; i != j; i += b4)
{
aint3[b1] = par1ArrayOfInteger[b1] + i;
aint3[b2] = MathHelper.floor_double((double)par1ArrayOfInteger[b2] + (double)i * d0);
aint3[b3] = MathHelper.floor_double((double)par1ArrayOfInteger[b3] + (double)i * d1);
int k = this.worldObj.getBlockId(aint3[0], aint3[1], aint3[2]);
if (k != 0 && k != Block.leaves.blockID)
{
break;
}
}
return i == j ? -1 : Math.abs(i);
}
}
/**
* 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[] aint = new int[] {this.basePos[0], this.basePos[1], this.basePos[2]};
int[] aint1 = new int[] {this.basePos[0], this.basePos[1] + this.heightLimit - 1, this.basePos[2]};
int i = this.worldObj.getBlockId(this.basePos[0], this.basePos[1] - 1, this.basePos[2]);
Block soil = Block.blocksList[i];
boolean isValidSoil = (soil != null && soil.canSustainPlant(worldObj, basePos[0], basePos[1] - 1, basePos[2], ForgeDirection.UP, (BlockSapling)Block.sapling));
if (!isValidSoil)
{
return false;
}
else
{
int j = this.checkBlockLine(aint, aint1);
if (j == -1)
{
return true;
}
else if (j < 6)
{
return false;
}
else
{
this.heightLimit = j;
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 l = par2Random.nextLong();
this.rand.setSeed(l);
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;
}
}
}