Customitem Mod Notes

Features

• Adds the Radioactive Isotope item with a custom green hazard texture.
• Item is available in the Ingredients creative tab.
• When held in either hand, it emits a 5-block aura that refreshes Poison on nearby living entities every second.

Usage

• Grab the Radioactive Isotope from the creative inventory and hold it to start irradiating nearby mobs and players (including yourself).
• Keep it equipped to maintain the aura; stowing it stops the effect.

Implementation Details

• Aura logic runs in the item tick, only on the server side of the world, and checks main and offhand stacks.
• Poison duration is short (3 seconds) but re-applied to stay active while you keep holding the item.

Limitations & Suggestions

• The effect requires the mod to be present wherever gameplay is simulated; in multiplayer it needs to run where the world is authoritative.
• Consider adding immunity or mitigation (armor, potions) if the aura is too punishing, or tweak the radius/duration to taste.