Hi! I am trying to make a leaf block whose color changes with the biome (like vanilla) and cannot quite figure out how.

 

The block class:

 

package net.mc42.mods.TPDWSP.blocks;

import net.mc42.mods.LeVCore.LeVBlock;
import net.mc42.mods.TPDWSP.TPDWSP;
import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.creativetab.CreativeTabs;

public class PearwoodLeaves extends LeVBlock {

public PearwoodLeaves(Material p_i45394_1_) {
	super(p_i45394_1_);
	// TODO Auto-generated constructor stub
	setBlockTextureName(TPDWSP.MODID + ":pearwood_leaves");
	setStepSound(Block.soundTypeGrass);
	setBlockName("pearwood_leaves"); // changed in 1.7
	setCreativeTab(CreativeTabs.tabBlock);
	setSideCount(1);
	setOpaque(false);
}

}

 

(LeVBlock has the texture and opaque rendering in it.)

 

LeVBlock:

 

package net.mc42.mods.LeVCore;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.util.IIcon;

public class LeVBlock extends Block {

public IIcon[] icons = new IIcon[6];
private int scount = 1;
private boolean opq = true;

public LeVBlock(Material p_i45394_1_) {
	super(p_i45394_1_);
	// TODO Auto-generated constructor stub
}

public void setSideCount(int c){
	scount = c;
}

public void setOpaque(boolean tf){
	opq = tf;
}

public boolean isOpaqueCube(){
	return opq;
}

@Override
public void registerBlockIcons(IIconRegister reg) {
	if(scount <= 1){
		for (int i = 0; i < 6; i ++) {
	    	this.icons[i] = reg.registerIcon(textureName);
	    }
	} else if(scount==2){ 
		for (int i = 0; i < 6; i ++) {
    		if(i<2){
    			this.icons[i] = reg.registerIcon(textureName + "_top");
    		} else {
    			this.icons[i] = reg.registerIcon(textureName + "_side");
    		}
    	}
	} else if(scount==3){ 
		for (int i = 0; i < 6; i ++) {
    		if(i==0){
    			this.icons[i] = reg.registerIcon(textureName + "_down");
    		} else if(i==1){
    			this.icons[i] = reg.registerIcon(textureName + "_top");
    		} else {
    			this.icons[i] = reg.registerIcon(textureName + "_side");
    		}
    	}
	} else {
		int i = 0;
		this.icons[i++] = reg.registerIcon(textureName + "_down");
		this.icons[i++] = reg.registerIcon(textureName + "_top");
		this.icons[i++] = reg.registerIcon(textureName + "_n");
		this.icons[i++] = reg.registerIcon(textureName + "_s");
		this.icons[i++] = reg.registerIcon(textureName + "_w");
		this.icons[i++] = reg.registerIcon(textureName + "_e");
	}
}

@Override
public IIcon getIcon(int side, int meta) {
    return this.icons[side];
}

}

 

I'd help if you actually looked at the vanilla leaves.  Say, BlockLeaves line 151.