Uploaded May 2026 | Updated September 2026, 2 weeks ago

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Let's bring our experiments with 2D collisions in 3D to the logical extreme, and use it as an acceleration structure for the 3D collision system that we made in the past.

0:00 Introduction
4:11 the way this is going to work
6:05 the proxy objects
14:18 adding objects to the world
15:09 removing objects from the world
16:03 checking for collisions
23:31 not getting objects in the frustum
25:46 running it
27:50 raycasts, sort of
35:31 it's time to talk about performance
39:02 comments about the way the system can break that you might want to consider
41:11 the end

Download the complete project on Itch:
dragonite.itch.io/collisions

The code:
github.com/DragoniteSpam-GameMaker-Tutorials/3DCollisions
github.com/DragoniteSpam-GameMaker-Tutorials/3DCollisionTestWorld

#gamemaker3d
#GameMaker3DCollisions
- - - - -
I've now made that Patreon:
patreon.com/wizardragon
That promised social media link spam.
twitter.com/DragoniteSpam
Transition / idle music is by my old friend Kamex:
youtube.com/user/GreatGabite/about

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