514 lines
12 KiB
Java
514 lines
12 KiB
Java
package biomesoplenty.worldgen.tree;
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import java.util.Random;
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import net.minecraft.block.Block;
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import net.minecraft.util.MathHelper;
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import net.minecraft.world.World;
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import net.minecraft.world.gen.feature.WorldGenerator;
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public class WorldGenMassiveTree extends WorldGenerator
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{
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/**
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* Contains three sets of two values that provide complimentary indices for a given 'major' index - 1 and 2 for 0, 0
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* and 2 for 1, and 0 and 1 for 2.
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*/
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static final byte[] otherCoordPairs = new byte[] {(byte)2, (byte)0, (byte)0, (byte)1, (byte)2, (byte)1};
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/** random seed for GenBigTree */
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Random rand = new Random();
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/** Reference to the World object. */
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World worldObj;
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int[] basePos = new int[] {0, 0, 0};
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int heightLimit = 0;
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int height;
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double heightAttenuation = 0.45D;
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double branchDensity = 5.0D;
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double branchSlope = 0.45D;
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double scaleWidth = 4.0D;
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double leafDensity = 5.0D;
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/**
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* Currently always 1, can be set to 2 in the class constructor to generate a double-sized tree trunk for big trees.
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*/
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int trunkSize = 2;
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/**
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* Sets the limit of the random value used to initialize the height limit.
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*/
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int heightLimitLimit = 45;
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/**
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* Sets the distance limit for how far away the generator will populate leaves from the base leaf node.
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*/
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int leafDistanceLimit = 4;
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/** Contains a list of a points at which to generate groups of leaves. */
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int[][] leafNodes;
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public WorldGenMassiveTree(boolean par1)
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{
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super(par1);
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}
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/**
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* Generates a list of leaf nodes for the tree, to be populated by generateLeaves.
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*/
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void generateLeafNodeList()
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{
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height = (int)(heightLimit * heightAttenuation);
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if (height >= heightLimit)
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{
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height = heightLimit - 1;
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}
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int var1 = (int)(1.382D + Math.pow(leafDensity * heightLimit / 13.0D, 2.0D));
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if (var1 < 1)
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{
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var1 = 1;
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}
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int[][] var2 = new int[var1 * heightLimit][4];
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int var3 = basePos[1] + heightLimit - leafDistanceLimit;
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int var4 = 1;
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int var5 = basePos[1] + height;
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int var6 = var3 - basePos[1];
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var2[0][0] = basePos[0];
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var2[0][1] = var3;
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var2[0][2] = basePos[2];
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var2[0][3] = var5;
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--var3;
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while (var6 >= 0)
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{
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int var7 = 0;
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float var8 = this.layerSize(var6);
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if (var8 < 0.0F)
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{
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--var3;
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--var6;
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}
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else
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{
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for (double var9 = 0.5D; var7 < var1; ++var7)
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{
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double var11 = scaleWidth * var8 * (rand.nextFloat() + 0.328D);
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double var13 = rand.nextFloat() * 2.0D * Math.PI;
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int var15 = MathHelper.floor_double(var11 * Math.sin(var13) + basePos[0] + var9);
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int var16 = MathHelper.floor_double(var11 * Math.cos(var13) + basePos[2] + var9);
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int[] var17 = new int[] {var15, var3, var16};
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int[] var18 = new int[] {var15, var3 + leafDistanceLimit, var16};
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if (this.checkBlockLine(var17, var18) == -1)
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{
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int[] var19 = new int[] {basePos[0], basePos[1], basePos[2]};
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double var20 = Math.sqrt(Math.pow(Math.abs(basePos[0] - var17[0]), 2.0D) + Math.pow(Math.abs(basePos[2] - var17[2]), 2.0D));
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double var22 = var20 * branchSlope;
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if (var17[1] - var22 > var5)
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{
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var19[1] = var5;
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}
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else
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{
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var19[1] = (int)(var17[1] - var22);
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}
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if (this.checkBlockLine(var19, var17) == -1)
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{
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var2[var4][0] = var15;
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var2[var4][1] = var3;
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var2[var4][2] = var16;
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var2[var4][3] = var19[1];
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++var4;
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}
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}
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}
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--var3;
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--var6;
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}
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}
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leafNodes = new int[var4][4];
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System.arraycopy(var2, 0, leafNodes, 0, var4);
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}
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void genTreeLayer(int par1, int par2, int par3, float par4, byte par5, int par6)
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{
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int var7 = (int)(par4 + 0.618D);
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byte var8 = otherCoordPairs[par5];
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byte var9 = otherCoordPairs[par5 + 3];
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int[] var10 = new int[] {par1, par2, par3};
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int[] var11 = new int[] {0, 0, 0};
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int var12 = -var7;
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int var13 = -var7;
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for (var11[par5] = var10[par5]; var12 <= var7; ++var12)
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{
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var11[var8] = var10[var8] + var12;
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var13 = -var7;
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while (var13 <= var7)
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{
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double var15 = Math.pow(Math.abs(var12) + 0.5D, 2.0D) + Math.pow(Math.abs(var13) + 0.5D, 2.0D);
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if (var15 > par4 * par4)
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{
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++var13;
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}
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else
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{
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var11[var9] = var10[var9] + var13;
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int var14 = worldObj.getBlockId(var11[0], var11[1], var11[2]);
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if (var14 != 0 && var14 != Block.leaves.blockID)
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{
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++var13;
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}
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else
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{
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this.setBlockAndMetadata(worldObj, var11[0], var11[1], var11[2], par6, 4);
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++var13;
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}
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}
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}
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}
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}
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/**
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* Gets the rough size of a layer of the tree.
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*/
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float layerSize(int par1)
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{
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if (par1 < (heightLimit) * 0.3D)
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return -1.618F;
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else
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{
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float var2 = heightLimit / 2.0F;
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float var3 = heightLimit / 2.0F - par1;
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float var4;
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if (var3 == 0.0F)
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{
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var4 = var2;
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}
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else if (Math.abs(var3) >= var2)
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{
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var4 = 0.0F;
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}
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else
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{
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var4 = (float)Math.sqrt(Math.pow(Math.abs(var2), 2.0D) - Math.pow(Math.abs(var3), 2.0D));
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}
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var4 *= 0.5F;
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return var4;
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}
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}
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float leafSize(int par1)
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{
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return par1 >= 0 && par1 < leafDistanceLimit ? (par1 != 0 && par1 != leafDistanceLimit - 1 ? 3.0F : 2.0F) : -1.0F;
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}
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/**
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* Generates the leaves surrounding an individual entry in the leafNodes list.
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*/
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void generateLeafNode(int par1, int par2, int par3)
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{
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int var4 = par2;
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for (int var5 = par2 + leafDistanceLimit; var4 < var5; ++var4)
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{
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float var6 = this.leafSize(var4 - par2);
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this.genTreeLayer(par1, var4, par3, var6, (byte)1, Block.leaves.blockID);
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}
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}
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/**
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* Places a line of the specified block ID into the world from the first coordinate triplet to the second.
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*/
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void placeBlockLine(int[] par1ArrayOfInteger, int[] par2ArrayOfInteger, int par3)
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{
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int[] var4 = new int[] {0, 0, 0};
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byte var5 = 0;
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byte var6;
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for (var6 = 0; var5 < 3; ++var5)
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{
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var4[var5] = par2ArrayOfInteger[var5] - par1ArrayOfInteger[var5];
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if (Math.abs(var4[var5]) > Math.abs(var4[var6]))
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{
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var6 = var5;
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}
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}
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if (var4[var6] != 0)
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{
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byte var7 = otherCoordPairs[var6];
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byte var8 = otherCoordPairs[var6 + 3];
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byte var9;
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if (var4[var6] > 0)
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{
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var9 = 1;
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}
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else
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{
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var9 = -1;
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}
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double var10 = (double)var4[var7] / (double)var4[var6];
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double var12 = (double)var4[var8] / (double)var4[var6];
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int[] var14 = new int[] {0, 0, 0};
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int var15 = 0;
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for (int var16 = var4[var6] + var9; var15 != var16; var15 += var9)
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{
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var14[var6] = MathHelper.floor_double(par1ArrayOfInteger[var6] + var15 + 0.5D);
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var14[var7] = MathHelper.floor_double(par1ArrayOfInteger[var7] + var15 * var10 + 0.5D);
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var14[var8] = MathHelper.floor_double(par1ArrayOfInteger[var8] + var15 * var12 + 0.5D);
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byte var17 = 0;
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int var18 = Math.abs(var14[0] - par1ArrayOfInteger[0]);
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int var19 = Math.abs(var14[2] - par1ArrayOfInteger[2]);
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int var20 = Math.max(var18, var19);
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if (var20 > 0)
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{
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if (var18 == var20)
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{
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var17 = 4;
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}
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else if (var19 == var20)
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{
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var17 = 8;
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}
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}
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this.setBlockAndMetadata(worldObj, var14[0], var14[1], var14[2], par3, var17);
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}
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}
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}
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/**
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* Generates the leaf portion of the tree as specified by the leafNodes list.
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*/
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void generateLeaves()
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{
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int var1 = 0;
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for (int var2 = leafNodes.length; var1 < var2; ++var1)
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{
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int var3 = leafNodes[var1][0];
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int var4 = leafNodes[var1][1];
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int var5 = leafNodes[var1][2];
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this.generateLeafNode(var3, var4, var5);
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}
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}
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/**
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* Indicates whether or not a leaf node requires additional wood to be added to preserve integrity.
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*/
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boolean leafNodeNeedsBase(int par1)
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{
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return par1 >= heightLimit * 0.2D;
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}
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/**
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* Places the trunk for the big tree that is being generated. Able to generate double-sized trunks by changing a
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* field that is always 1 to 2.
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*/
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void generateTrunk()
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{
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int var1 = basePos[0];
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int var2 = basePos[1];
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int var3 = basePos[1] + height;
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int var4 = basePos[2];
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int[] var5 = new int[] {var1, var2, var4};
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int[] var6 = new int[] {var1, var3, var4};
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if (trunkSize == 2)
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{
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for (int i = -2; i < 3; i++ )
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{
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var5[0] = var1 + i;
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var6[0] = var1 + i;
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for (int j = -2; j < 3; j++ )
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{
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if (!(i == -2 && j == -2) && !(i == -2 && j == 2) && !(i == 2 && j == -2) && !(i == 2 && j == 2))
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{
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var5[2] = var4 + j;
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var6[2] = var4 + j;
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this.placeBlockLine(var5, var6, Block.wood.blockID);
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}
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}
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}
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}
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}
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/**
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* Generates additional wood blocks to fill out the bases of different leaf nodes that would otherwise degrade.
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*/
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void generateLeafNodeBases()
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{
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int var1 = 0;
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int var2 = leafNodes.length;
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for (int[] var3 = new int[] {basePos[0], basePos[1], basePos[2]}; var1 < var2; ++var1)
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{
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int[] var4 = leafNodes[var1];
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int[] var5 = new int[] {var4[0], var4[1], var4[2]};
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var3[1] = var4[3];
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int var6 = var3[1] - basePos[1];
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if (this.leafNodeNeedsBase(var6))
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{
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this.placeBlockLine(var3, var5, Block.wood.blockID);
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}
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}
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}
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/**
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* Checks a line of blocks in the world from the first coordinate to triplet to the second, returning the distance
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* (in blocks) before a non-air, non-leaf block is encountered and/or the end is encountered.
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*/
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int checkBlockLine(int[] par1ArrayOfInteger, int[] par2ArrayOfInteger)
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{
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int[] var3 = new int[] {0, 0, 0};
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byte var4 = 0;
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byte var5;
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for (var5 = 0; var4 < 3; ++var4)
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{
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var3[var4] = par2ArrayOfInteger[var4] - par1ArrayOfInteger[var4];
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if (Math.abs(var3[var4]) > Math.abs(var3[var5]))
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{
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var5 = var4;
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}
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}
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if (var3[var5] == 0)
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return -1;
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else
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{
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byte var6 = otherCoordPairs[var5];
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byte var7 = otherCoordPairs[var5 + 3];
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byte var8;
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if (var3[var5] > 0)
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{
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var8 = 1;
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}
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else
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{
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var8 = -1;
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}
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double var9 = (double)var3[var6] / (double)var3[var5];
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double var11 = (double)var3[var7] / (double)var3[var5];
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int[] var13 = new int[] {0, 0, 0};
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int var14 = 0;
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int var15;
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for (var15 = var3[var5] + var8; var14 != var15; var14 += var8)
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{
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var13[var5] = par1ArrayOfInteger[var5] + var14;
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var13[var6] = MathHelper.floor_double(par1ArrayOfInteger[var6] + var14 * var9);
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var13[var7] = MathHelper.floor_double(par1ArrayOfInteger[var7] + var14 * var11);
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int var16 = worldObj.getBlockId(var13[0], var13[1], var13[2]);
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if (var16 != 0 && var16 != Block.leaves.blockID)
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{
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break;
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}
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}
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return var14 == var15 ? -1 : Math.abs(var14);
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}
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}
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/**
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* Returns a boolean indicating whether or not the current location for the tree, spanning basePos to to the height
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* limit, is valid.
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*/
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boolean validTreeLocation()
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{
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int[] var1 = new int[] {basePos[0], basePos[1], basePos[2]};
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int[] var2 = new int[] {basePos[0], basePos[1] + heightLimit - 1, basePos[2]};
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int var3 = worldObj.getBlockId(basePos[0], basePos[1] - 1, basePos[2]);
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if (var3 != 2 && var3 != 3)
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return false;
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else
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{
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int var4 = this.checkBlockLine(var1, var2);
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if (var4 == -1)
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return true;
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else if (var4 < 6)
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return false;
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else
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{
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heightLimit = var4;
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return true;
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}
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}
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}
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/**
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* Rescales the generator settings, only used in WorldGenBigTree
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*/
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@Override
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public void setScale(double par1, double par3, double par5)
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{
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heightLimitLimit = (int)(par1 * 12.0D);
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if (par1 > 0.5D)
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{
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leafDistanceLimit = 5;
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}
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scaleWidth = par3;
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leafDensity = par5;
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}
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@Override
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public boolean generate(World par1World, Random par2Random, int par3, int par4, int par5)
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{
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worldObj = par1World;
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long var6 = par2Random.nextLong();
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rand.setSeed(var6);
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basePos[0] = par3;
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basePos[1] = par4;
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basePos[2] = par5;
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if (heightLimit == 0)
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{
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heightLimit = 50;
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}
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if (!this.validTreeLocation())
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return false;
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else
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{
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this.generateLeafNodeList();
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this.generateLeaves();
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this.generateTrunk();
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this.generateLeafNodeBases();
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return true;
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}
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}
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}
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