Help need SpriteKit player not affected by gravity but still able to jump and kick and walk but only to a vertían point

move sprite in SpriteKit along x and y but within a playable area so they do it walk on the “houses” but still jump which would have them overlap the house since this is 2D game any advice? I have tried playable rect but I get the fatal error and not sure how to set up the vectoring so the player can still jump and kick even whne not affected by gravit.