I am developing a platformer that involves gravity manipulation. Unfortunately, very little exists in the Asset Portal to assist with platformer physics, especially in the case of uncertain gravitational velocities.
Defold Simple Platformer (DSP) is a straightforward physics module that performs precise raycast collision detection and reaction. The most prominent feature of DSP is its ability to adjust to differing gravitational velocities. For example, if the player is running on the ceiling, the module will adjust all of its internal components to comply with an upside-down and backwards physics world. Of course, gravity changes are not required when using DSP, but something worth mentioning.
New features will be added within the coming days, such as adjusting raycasts based on non-square sprite orientations. If you have feedback or suggestions, I would be glad to hear them! I will try to get this on the Asset Portal soon.