Uploaded April 2026 | Updated September 2026, 2 weeks ago

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Collision detection is pretty important in a lot of games, and GameMaker offers a bunch of different ways to do it. Here's the most fundamental way to have an object stop when it runs into a wall!

0:00 Introduction
0:52 The example project
2:35 We are not going to use the "solid" checkbox
3:39 We are also not going to use the collision events
5:23 Using the collision functions ourselves
8:35 Oh no, you can't slide along walls like this
12:24 Oh no, it breaks if you don't move in increments of movement speed
16:05 Sign and abs
18:29 I swear to god if you people make a bunch of amongus jokes
19:38 How fast is this?
22:34 The end

You should all go wishlist Wizarducks and the Lost Hat:
store.steampowered.com/app/2769920/Wizarducks_and_the_Lost_Hat

#GameMaker
#GameMakerCollisions
#GameMakerSolids
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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

Rate, comment, subscribe, watch more, enjoy!