CODEWITHSUNDEEP
iosswiftsprite-kitswift2
Ray
Ray

Reputation: 884

Redirect SKNode SkAction direction while touching

While a player is touching, the code below is suppose to move a node to the MaxX. Once they hit that point it is suppose to redirect the node's movement towards the MinX and vice versus.

As it stands right now, I can only move the player in once direction and it is ignoring the movePlayer() logic.

Action Declarations

 var moveRightTest:Bool = true;
 var moveLeftTest:Bool = false;

 let moveRight = SKAction.moveByX(1000, y: 0, duration: 2);
 let moveLeft = SKAction.moveByX(-1000, y: 0, duration: 2);

Inside the GameScene:

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
    movePlayer();
}

override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
    stopPlayer();
}

func movePlayer() {
    if(moveRightTest == true) {
        if(player.position.x <= CGRectGetMaxX(self.frame)) {
            player.runAction(moveRight);
        } else  {
            moveRightTest = false;
            moveLeftTest = true;
        }
    }

    else if(moveLeftTest == true) {
        if(player.position.x >= CGRectGetMinX(self.frame)) {
            player.runAction(moveLeft);
        } else {
            moveLeftTest = false;
            moveRightTest = true;
        }
    }
}

func stopPlayer() {
    player.removeAllActions();
}

Note: I subbed out some vars with ints/floats to remove the calculation from the code in order to present. Its not related to the issue. Im also just learning Swift.

Upvotes: 0

Views: 70

Answers (1)

Alexey Pichukov
Alexey Pichukov

Reputation: 3405

Now your function movePlayer is performed only once when you're calling it, so the player comes to the right edge and stops. You need to repeat it after each run the following steps. To do this, you can use runAction with completion like this: 

isRight: Bool = true

let moveRight = SKAction.moveToX(CGRectGetMaxX(self.frame), duration: 2)
let moveLeft = SKAction.moveToX(CGRectGetMinX(self.frame), duration: 2)

func movePlayer() {
    if isRight {
        player.runAction(moveRight, completion: { () -> Void in
            isRight = false
            self.movePlayer()
        })
    } else {
        player.runAction(moveLeft, completion: { () -> Void in
            isRight = true
            self.movePlayer()
        })
    }
}

Upvotes: 1

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