SpriteKit/Objective-C - Touch detection inside nodes

Question

I'm making a game in SpriteKit with Objective-C. I have a class which inherits SKNode:

@interface Card : SKNode

I have then declared SKSpriteNodes inside this class and added them as children:

cardSprite = [SKSpriteNode spriteNodeWithImageNamed:fileName]; //fileName corresponds with an image asset
[self addChild:cardSprite];

I then make a Card object and add it as a child to my main GameScene. I'm wondering how to do touch detection on the SKSpriteNode inside the Card object. Normally I would use a name for each node for touch detection, but that doesn't seem to be working when the name is set from inside the Card object rather than in GameScene.

There were some posts here on StackOverflow about this already. You can start with this: http://stackoverflow.com/a/19489006/3402095 — Whirlwind, Mar 03 '16 at 00:25

score 0 · Answer 1 · answered Mar 04 '16 at 12:58

Here's how I do it:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [touches anyObject];
    CGPoint location = [touch locationInNode:self];
    [self handleTouchedPoint:location]; // Cleans 'touchesBegan' method by carrying over needed code elsewhere.
}

/** Handle touches. */
- (void)handleTouchedPoint:(CGPoint)touchedPoint {
    SKNode *touchedNode = [self nodeAtPoint:touchedPoint];

    // Detects which node was touched by utilizing names.
    if ([touchedNode.name isEqualToString:@"God"]) {
        NSLog(@"Touched world");
    }
    if ([touchedNode.name isEqualToString:@"Tiles"]) {
        NSLog(@"Touched map");
    }
    if ([touchedNode.name isEqualToString:@"Player Character"]) {
        NSLog(@"Touched player");
    }
    if ([touchedNode.name isEqualToString:@"Test Node"]) {
        NSLog(@"Touched test node");
    }
}

P.S. 'Test Node' is an SKSpriteNode created within my Player class (which is also a SKSpriteNode) to test if touches still work on it. They do.

SpriteKit/Objective-C - Touch detection inside nodes

1 Answers1