It is nice to see push back on the annoying trend of internet replies which promote not trying and just generally being dumb. Making things from scratch, or making your own version of something, is very powerful. It's really at the heart of engineering, understanding, and creative expression. Thank you very much for promoting people to not just accept the status quo. Reinventing wheels isn't bad when available wheels suck. Instant like and subscribe.

hit and run? nah, I prefer collide and slide.

This is unreasonably underrated, incredibly high quality content. Keep it up man <3

I'm happy to see you found my old paper useful! Not quite sure I follow the reasoning behind normalizing and re-adjusting the length of the projected vector in the sliding part, but this has been discussed in the comment section already ;) Great presentation and great video though!

I wouldn't dismiss the floating capsule collider concept, it is really good for player-world interaction. It makes smooth movement over stairs and unexpected terrain easy, and easy isn't bad, if you wanted to ensure that other players couldn't just slide under another player, then you can create a full height collider that only exists to test interaction with dynamic objects (doesn't impact player movement behaviour)

I remember searching for this when first studying game dev years ago, it was incredibly infuriating the amount of trash replies you'd find. Thanks for this, I wish this video was around when I first started

good video! just wanted to point out that normalizing the vector at 4:00 only to multiply it by the dot product at 9:05 is unecessary since it reverses the normalization (it's like if you would multiply a number by 10 and then divide the result by 10, the second operation reverses the effects of the previous one). if you only want that "sliding along the wall" effect you can skip both steps to get the same result cheaper.

bro came out of literally nowhere and made one of the most helpful and high quality ive seen in a very long time

It's funny how I tried to make a character controler on my own quite a while ago and was smart enough to came up with this, but stupid(inexperienced) enough to fuck up when coding it, your vid makes me want to come back to that project and try again

Thank you
I have been on the receiving end of the dismissal quite often, when to me, yes, I could use the premade CharacterController or Rigidbody that does "everything for me" but like... I don't learn from that. All I learn is how to control that specific component, not how a Character Controller actually functions. Not how Collision actually functions.

Most these people couldn't make a game without the use of these tools. Which is fine, the tools are there so it's fine to use them, but I am tired of the dismissal when someone is genuinely interested into just learning "what's under the hood"

I finally came up with the correct search keywords to find this video.

such good visualization of vector math!

194 Subs? How, this has great video quality.

For Godot users: This is said in the documentation but, if you ever want to do this in Godot (with that I mean don't want to use the built in move_and_slide function), the engine provides the method move_and_collide() that does the collision casting + the movement, and the Vector2/3.slide() function to calculate the reaction movement.

Update 2: Ok so Unity is currently imploding... I was working on refactoring and adding stair detection, but I might take a detour and learn Godot now lol

As someone in the comments pointed out, maintaining full velocity on slopes is not very physically accurate, so I thought I should clarify that all the fancy scaling I'm doing is specifically meant for *character movement*,  and should be ignored if using this code for a more general physics engine!

Again, thanks for watching, and I hope you found this video helpful!

Oh my god, why couldnt this video have existed years ago? As someone who tends to become obsessed with doing things the "correct" way, every time I've gone to make a game I get a bit of the initial setup done, then get fixated on the character controller for weeks, unhappy with most of what I see online.

1:40 Ohp, there goes gravity!

nice video, this is probably gonna get boosted by the algorithm

Dude, this is THE most underrated channel I've ever seen. Top notch content, will be using this, and I subscribed

Well done btw this video will blow up soon so remember me when you become famous ❤!