3D collisions for GameMaker LTS 2022 by Juju Adams
Bonk is a simple 3D collision library. It supports boolean intersection tests between the following primitives:
| AABB | Cylinder | Sphere | Line | Floor | Wall | Point | |
| AABB | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Cylinder | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Sphere | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Line | ✓ | ✓ | ✓ | ☒ | ✓ | ✓ | ☒ |
| Floor | ✓ | ✓ | ✓ | ✓ | ☒ | ☒ | ☒ |
| Wall | ✓ | ✓ | ✓ | ✓ | ☒ | ☒ | ☒ |
| Point | ✓ | ✓ | ✓ | ☒ | ☒ | ☒ | ✓ |
You may also be interested in Dragonite's 3D Collisions. Dragonite also has many videos on 3D topics in GameMaker.