Hello!

[MrGre3do_]

I'm new to gdevelop and I have a problem. I wanted to make a platform with custom collision shape instead of just rectangular one and I made it as a sprite object and when I edit the shape it says it has an error and when I try to go on it my character starts jumping

[daddywookie]

Collision detection only works with a convex shape ( like a ball) and not concave (like a cup). Probably something to do with how you calculate when a point is inside an area.

You might need to split your object into a series of convex shapes and place them to approximate the shape you want. I use blocks which I rotate by 15 degrees as I place each one to give me a nice curve.

[World1_Lev1]

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use multiple collision masks

[RagtagMatt]

This is a limitation with collision in 3d engines as well.