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[1.7.2]Create Potion Effect


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How do I check if the player has this potion effect and which block is underneath him?



package MyMod;

import cpw.mods.fml.common.eventhandler.SubscribeEvent;
import cpw.mods.fml.common.gameevent.TickEvent;

public class MyModEventListener
public void onTick(TickEvent.ClientTickEvent event){




package MyMod.handler;

import java.util.HashMap;

import net.minecraft.potion.PotionHelper;
import MyMod.items.potion.MyModPotion;

public class MyModPotionHelper extends PotionHelper {

    private static final HashMap potionRequirements = new HashMap();
public static final String effectMyMod;

	potionRequirements.put(Integer.valueOf(MyModPotion.potionMyMod.getId()), "0 & 1 & !2 &3 &3+6");
	effectMyMod = "";



package MyMod.items.potion;

import net.minecraft.potion.Potion;

public class MyModPotion extends Potion {

public static final MyModPotion potionMyMod= (MyModPotion) (new MyModPotion(25, false, 7589137*16).setPotionName("potion.potionMyMod"));

protected MyModPotion(int par1, boolean par2, int par3) {
	super(par1, par2, par3);


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One, by not using TickEvent.ClientTickEvent as you should be checking server side.

Two, by putting code into that function.


(Oh, I'm sorry, did you mean to ask "how do I get a reference to the world here?" Well, if you're using the right tick type, you should be passed a reference to the player, which as an entity, contains a reference to the world)

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.


Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.


DO NOT PM ME WITH PROBLEMS. No help will be given.

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