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I’ve been trying to implement a basic ** for my 2D platformer, but my character keeps getting stuck on tile edges when moving diagonally against a wall. I’m not sure if the issue is in my collision resolution step or if I need to handle slope cases separately from my core tilemap check.

I’ve run into that same edge snag. My fix was to split the resolution by axis—handle x first, then y—so moving along a wall doesn’t push you into the corner. It made diagonal slides feel a lot less snaggy, even though it wasn’t a perfect solve.

On slopes I kept tripping over small penetrations too. I suspect the real issue isn’t the tile map check so much as how a tiny slope check can override a clean axis push. We kept the core tile check simple but added a separate slope guard that only kicks in when the height difference is meaningful.

I tried simplifying the world: we had a tiny gap in the collision mask between some tiles, and when you go diagonal you slip into that gap. We added a tiny buffer and a one pixel hysteresis near corners. It helped but only sometimes, depending on the tile variant.

Have you tested if the problem follows a pattern across all walls or only on some tiles?

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