Platform: Meta Quest 3 (Unity)
Genre: Mixed Reality Survival Shooter
Theme: North Pole Containment / Thermal Defense

Overview

Sunday was a big day for mechanics. I finally implemented a proper heat/cooldown system for the lance so you can’t just spam it forever. I also refactored the entire welding logic because the old one was a mess, and fixed a 4-day long bug where I couldn’t see the UI.

1. The Heat Mechanic

The Thermal Lance is a powerful weapon, but it needed a downside. I added a heat system that builds up as you fire.

Heating Up: Firing adds heat over time (takes 5 seconds to max out). Overheat: If you hit 100% heat, the weapon jams. You have to wait for it to fully cool down (0%) before you can shoot again. Visuals: I added a new Cooldown UI on the HUD. The bar goes from Yellow to Red as it gets hotter.

2. Refactoring Welding

The old welding code was barely working. It had trouble identifying which wall you were trying to fix. I rewrote the target identification logic ( GetHitboxFromObject ) so it’s super reliable now.

The Fix: I also decoupled the UI from the wall objects. Now the code reliably tracks exactly how long you’ve been welding a specific hole and updates the UI accordingly, the UI now floats in front of the players eyes.

Visuals: I also changed how the target to ‘weld’ the hole looks, it now displays a welding icon so the player knows why to hit the orange icon.

3. Result

Current State:

You have to manage your heat while shooting enemies. If a wall breaks, you can reliably repair it with the new progress bar. The UI actually shows up now.

4. Unity

screenshot of cooldown ui