Platform jump using physics behavior?

The main problem I'm having is detecting whether the player is on the floor (for a jump). Is there a way to do that only with the physics behavior?

Sushin

You could have an invisible sprite on the surface of the platform and check to see whether your character is overlapping.

Or pin a sensor object position only below your sprite and see of it's overlapping the floor.

spongehammer

Colludium

Works good enough. Thanks!