Item giving potion effect while in the player's inventory! - 1.12.2

[UM3 F0R TH3 W1N]

Hey guys, I am making this post because a friend of mine asked me how to make his item give the player a potion effect if it is in the player's inventory, however neither of us knew how to do this, so for this reason I have come here for some insight on how to do this. I am assuming it will involve an event but I could be wrong. If it does use an event, I am clueless of which one. Thanks for the help in advance!

[UM3 F0R TH3 W1N]

6 minutes ago, diesieben07 said:

Check if the entity has your potion effect (EntityLivingBase#getActivePotionEffect)

however Item#onUpdateuses Entity not EntityLivingBase so there is no getActivePotionEffect. 

 

[UM3 F0R TH3 W1N]

sort of but also not really

[UM3 F0R TH3 W1N]

1 minute ago, diesieben07 said:

1. If you do not know basic Java you should not be writing mods.
2. if statements, instanceof operator, casting. Those are the tools you need.

I figured it out while you were typing this, sorry, I have been working a lot with lua and python lately and not much on java at all so I was getting confused lmao. but thx for the help.