How do I limit Y movement with physics behavior?

Hey there , i'm making a platform game and i am attempting to create a set of movement rules using the physics behavior that is essentially similar rules to that of a sonic game , i'm trying to create a system where the players movement will follow the geometry of the platforms using collision polygons , however in doing so it means that the speed built up by the player means they usually end up just flying upwards into the sky rather than following the platform. ( an example of what kind of platform i'm talking about will be picture 1).

i have tried limiting gravity and friction but those only end up destroying the flow of movement , the collision system i have in place ( picture 2) works fine and allows the player to use these platforms without issue but i need a way to keep to them attached to these platforms regardless of speed without taking off and still being allowing the player to jump.

i apologize if this is confusing and i thank you for your time,Ryan.

An interesting problem.... My instinct is to take the magnitude of the cross product of the player's velocity and the surface normal and apply it reverse of the surface normal.... but I have no idea how to get that surface normal from a sprite.

Edit: Maybe do something like Airscape, where you use overlapping invisible sprites to define the surface normal, and lerp when overlapping multiple sprites.

do you know if they're are any examples of what you've suggested in your edit hear on the forums or any where else , i understand most of what you described just prefer to look something over , and once again thank you very much.

I can't seem to find it right now, but I think there was a forum post about how Airscape: The Fall of Gravity was done somewhere on the forums. You wouldn't want a constant "down"ward force like Airscape though, you would probably want the "gravity" force to be proportional to speed.

https://www.scirra.com/tutorials/273/ho ... platformer So I've been trying this , which seems like what you've recommended but it doesn't seem to work with my set up since im not using the player behaviour.

tried this by using the physics behaviour but do sent seem to work or i can't figure it out if any one has any suggestions i would appreciate it.