How to detect if, one sprite node is the same colour as another sprite node then add to score if they are the same if not "restart game"

Question

So I have a "Ball" (player) that you control, when the player hits a "colorOrb" the Ball changes to that colour all at random, so that part works, but I'm stuck on how to detect if the player changes to a random colour on how to detect if once it goes through a wall also of a random colour if they are both the same colour and add +1 or whatever to score. I've tried multiple ways but can't seem to figure it out. thanks in advance :)

Answer 1

Given a Ball and a Wall class

class Ball: SKSpriteNode { }
class Wall: SKSpriteNode { }

In your didBegin(contact:) just compare the color property.

class GameScene: SKScene, SKPhysicsContactDelegate {

    func didBegin(_ contact: SKPhysicsContact) {

        let nodeA = contact.bodyA.node
        let nodeB = contact.bodyB.node

        guard let nodes: (ball:Ball, wall:Wall) = (nodeA, nodeB) as? (Ball, Wall) ?? (nodeB, nodeA) as? (Ball, Wall) else { return }

        if nodes.ball.color == nodes.wall.color {
            // same color
            // TODO...
        }

    }
}