I'm trying to make a block when right clicked takes on the texture of the block you clicked it with. With the code I have, it does change the texture but it requires me to place a block somewhere to update and it changes it for all instances of the block. Is there a way to do it so only the block you click on changes, and to make it happen instantly? Thankyou

 

 

package somarani.soulcraft.block;

import java.util.List;

import com.sun.org.apache.bcel.internal.generic.RETURN;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Blocks;
import net.minecraft.item.ItemStack;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.Facing;
import net.minecraft.util.IIcon;
import net.minecraft.world.IBlockAccess;
import net.minecraft.world.World;
import scala.reflect.internal.Trees.Return;
import somarani.soulcraft.common.SoulCraft;
import cpw.mods.fml.common.registry.GameRegistry;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

public class BlockClearSoulGlass extends Block {

@SideOnly(Side.CLIENT)
    private IIcon icon;

public BlockClearSoulGlass(Material p_i45394_1_) {
	super(p_i45394_1_);

	setHardness(2f);
	setResistance(5f);
	setBlockName("clearsoulglass");
	setCreativeTab(SoulCraft.tabSoul);
	setLightLevel(0f);
	setBlockTextureName("soulcraft:isg");


	GameRegistry.registerBlock(this, "clearsoulglass");

}

 @SideOnly(Side.CLIENT)
    public void registerBlockIcons(IIconRegister p_149651_1_)
    {
	 		 icon = this.blockIcon;
	 		icon = p_149651_1_.registerIcon("soulcraft:clearsoulglass");

    }



@Override
    public boolean onBlockActivated(World world, int x, int y, int z, EntityPlayer entityPlayer, int side, float hitX, float hitY, float hitZ){

	if(entityPlayer.getCurrentEquippedItem() != null){

	ItemStack stack = entityPlayer.getCurrentEquippedItem();

	icon = stack.getIconIndex();

	}
	return true;

	}


@Override
    @SideOnly(Side.CLIENT)
    public IIcon getIcon(IBlockAccess p_149673_1_, int p_149673_2_, int p_149673_3_, int p_149673_4_, int p_149673_5_){

	return icon;
    	
    }
    

    @SideOnly(Side.CLIENT)
    public boolean shouldSideBeRendered(IBlockAccess p_149646_1_, int p_149646_2_, int p_149646_3_, int p_149646_4_, int p_149646_5_)
    {
        return true;
    }

    @SideOnly(Side.CLIENT)
    public int getRenderBlockPass()
    {
        return 0;
    }
    
    @SideOnly(Side.CLIENT)
    public boolean isOpaqueCube() {
    	return false;
    }
    
    public void onEntityCollidedWithBlock(World p_149670_1_, int p_149670_2_, int p_149670_3_, int p_149670_4_, Entity entity) {
    	if(!(entity instanceof EntityPlayer)){
    		entity.setDead();
    	}
    	
    }

    
    
    public AxisAlignedBB getCollisionBoundingBoxFromPool(World par1World, int par2, int par3, int par4)
    {
	return null;
    }

    /**
     * If this block doesn't render as an ordinary block it will return False (examples: signs, buttons, stairs, etc)
     */
    public boolean renderAsNormalBlock()
    {
        return false;
    }

}

Look at the furnace class, there are two stages that is renders, idle and cooking, look around at what happens in-between those two rendering stages. I'm sure you'll find your answer, if I'm correct.