Right now I have a pretty developed "dodge and collect" game with text screens, options, death screens, animations, etc. I'm on the final level and need help with collision detection as the title says. I have the "granite" background set as the world and used an app to lay black squares onto it to make a layout and want to make it so actors can't go over black squares. I've tried looking online and only seen this in relation to side scrollers, when this is a top down-ish game. I'm thinking of using color detection but am running out of time to figure things out. I want it so the player can't move into the black squares, and so the enemy goes the other direction when it hits the black squares. Please help as soon as possible. Thank you so much!