Collision normal accuracy

[RileyRosell]

Truth be told, I’d been trying to reverse engineer the Sonic slope mechanics on my own project. However, I’ve had some VERY frustrating issues with consistency in collisions, and I was wondering if you had any similar issues while building this engine, and if so, what fixed it?

specific issues I've had:

-collision normal for a given flat slope varies by +/-2 degrees when things work well, but sometimes by more
-"Left handed" slopes (incline when moving left) have significantly MORE variation, by as much as +/-10 degrees

• along some joints in “concave” terrain (for example, loops), resting in a certain position can cause aggressive twitching or “position/rotation stutter”, where the player attempts to rapidly rotate between 2 different angles

It’s possible this is caused by implementation failure on my end (I use the Hitbox with a test_move rather than sensor raycasts, and the Sprite+Hitbox is rotated by 22.5 degree increments rather than having unique sprites for each rotation value). That said, I still want to check if I’m alone in needing to circumvent these quirks.

I tested this project for a bit, and found no real “slope twitch” like exists in my project. With how smooth it runs, there MUST be something very different in how these things are implemented…