LÖVE

Oh wow, that actually worked pretty well! May you explain why this new code works please?

According to the documentation collider:enter() and collider:exit() returns true the frame the contact with another collider starts and ends, respectively. Looking at the library code reveals that "Default" is the default collision class name for all colliders, so self.collider:enter("Default") currently returns true when the player collides with anything else (from any angle).