shader change class

package com.Looke81.BioWarfare.Potion;

import java.util.Random;

import net.minecraft.client.Minecraft;
import net.minecraft.client.shader.Shader;
import net.minecraft.client.shader.ShaderGroup;
import net.minecraft.client.util.JsonException;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.World;

public class ShaderChange {
    public static void flip(Random random, EntityPlayer player) {

            if (player.worldObj.isRemote) {
            	setCurrentShader(new ResourceLocation("minecraft:shaders/post/flip.json"), null);


                }
            }
    public static void noShader(Random random, EntityPlayer player) {

        if (player.worldObj.isRemote) {


        Minecraft mc = Minecraft.getMinecraft();

            mc.entityRenderer.theShaderGroup = null;

        }

        }




    public static void setCurrentShader(ResourceLocation resourcelocation,World world){
    	if(world.isRemote){
        Minecraft mc = Minecraft.getMinecraft();
        try{
            mc.entityRenderer.theShaderGroup = new ShaderGroup(mc.getTextureManager(), mc.getResourceManager(), mc.getFramebuffer(), resourcelocation);
        }catch(JsonException e){
            e.printStackTrace();
        }
        mc.entityRenderer.theShaderGroup.createBindFramebuffers(mc.displayWidth, mc.displayHeight);
    }
    }
}