Honestly, after months of fighting floaty falls in Unity, his illustration of how scale affects the perception of gravity got me to change my player from 5 units tall (Yikes! The ignorance) down to 1, scale the world down accordingly, fix the mass, and (alongside a simple fall speed multiplier script) my whole game's playing a lot snappier. Thanks, indie darling Bennett Foddy!

One of the best talks here on GDC

I've moved a prototype from Unity to Unreal, and while both use PhysX, I've found that I couldn't duplicate the same physics in Unreal as I had them in Unity. It was pretty interesting to see, and I'd rank Unity better in that regard. Things like increasing the frequency of physics calculations is handled differently in both engines, and perhaps this impacts things. How scaling affect collisions (which should result in some resulting physical forces) seems to be also handled differently as well (well, ignored in Unreal). This talk, factored in with another GDC talk that spoke about Rocket League using a simplified physics system, shows the importance of shaping the physics to suit your gameplay. Eliminating chaos, reducing complexity, or even making your physics a little less sensical, may be considerations for making your physics feel better.

I LOVE YOU BENNET FODDY! THANK YOU! This video helped me fix a gamebreaking bug in my game.

That was exactly what i needed. Gonna save this and rewatch when i get another physics problems

the first GDC talk that I finished watching (definitely not because it's short). Really great work!

Thank you! Really helpful

Awesome talk! Loved it all!!!

Wonderful and useful.

Great talk

So lost on a large majority of what he said, but still found it interesting enough to finish the video!

Really GOOD. Thanks, Bennett

Excellent talk!

Really cool talk, thanks!

That horse portion looks like a machine learning problem. Let it find clusters of stable parameters, then you choose the one you like

Thank you!

Awesome, thank you!

Very handy, thank you!

Very useful talk! nice work

Holy shit that's a great talk. Very insightful.

This vid was really good and educational

great thanks!

The controller is excellent idea, could save countless hours trying to tweak the physics.

I assume that the last platform and ball glitch are resolvable with soft-body physic.

16:07 Wouldn't the ball get absolutely crushed by the mass on top of it, assuming it wasn't indestructible?

why don't you use a collision point instead that use sin cos to determine collision angle by giving each object a x and y each that sums to a single number that produce that pixel that two objects can colide with each other at any angle. just let each x and y vector sum track another at 360 degree rotation and collision will always be at angle in respect between the pixels. just decide distance from the center of the objects on how far apart you want the colission to happend. in 3d space you need a z vector to get the pixels to collide at any angle between each other in 3d space. let say the sum of vector of object one is let say x 20 y 20 sum = 40 if you do this on the other object as well, you already know they are in the same spot. if you want the collision to happend with more distance, you need to recalculate the x and y of each object and then sum them and that will give you the distance between them. then you say somthing like if number is in range between some number and other at some aproximity then collide thell each object to stop at direction of motion.

Why does Unity use linear drag and not quadratic drag? It doesn't seem like a hug performance impact.

My GUT tells me I should learn more about dragging :)

thanks bean it

9:21

TLDR: Physics Parameters can be subject to Animation Theory. But you should watch the video and take notes as to how they directly relate.

Mafia 3

How can you screw up 9.81m/s^2

Pp

Reducing the physics timestep is not a solution and should NEVER be done. This causes the CPU to do A LOT more work and will cause the project to crash on all mobile devices and lower-end computers.

Does anybody know what is the name of the game at 3:10?