Change image when touched - ios

Question

I need an image to change itself when it's touched.
At the moment the image that changes is the next image that spawns and not self.
#implementation MyScene2
{
Marsugo *marsugo;
SKAction *actionMoveDown;
SKAction *actionMoveEnded;
SKTexture *rescued;
}
-(id)initWithSize:(CGSize)size
{
if (self = [super initWithSize:size]) {
// Initializes Background
self.currentBackground = [Background generateNewBackground];
[self addChild:self.currentBackground];
}
return self;
}
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
for (UITouch *touch in touches) {
NSArray *nodes = [self nodesAtPoint:[touch locationInNode:self]];
for (SKNode *node in nodes) {
if ([node.name isEqualToString:playerObject]) {
rescued = [SKTexture textureWithImageNamed:#"rescued"];
marsugo.texture = rescued;
// this is changing the image of the next marsugo that spawns instead of self.
}
}
}
}
-(void)addMarsugos
{
// the marsugo is being initialized inside this method, that might be the issue i believe
// Create sprite
marsugo = [[Marsugo alloc]init];
marsugo.xScale = 0.3;
marsugo.yScale = 0.3;
marsugo.zPosition = 75;
// Bounds + Spawn Positions
int minX = marsugo.size.width;
int maxX = self.frame.size.width - marsugo.size.width;
int rangeX = maxX - minX;
int actualX = (arc4random() % rangeX) + minX;
marsugo.position = CGPointMake(actualX, self.frame.size.height + 50);
[self addChild:marsugo];
// Spawn Timer
int minDuration = 1;
int maxDuration = 10;
int rangeDuration = maxDuration - minDuration;
int actualDuration = (arc4random() % rangeDuration) + minDuration;
// Movement Actions
actionMoveDown = [SKAction moveTo:CGPointMake(actualX, CGRectGetMinY(self.frame)) duration:actualDuration];
actionMoveEnded = [SKAction removeFromParent];
[marsugo runAction:[SKAction sequence:#[actionMoveDown, actionMoveEnded]]];
NSLog(#"Marsugo X: %f - Speed: %i", marsugo.position.x, actualDuration);
}
#end
Like i said previously, i need the self sprite to change texture and not the "next spawning sprite".
Any help fixing this would be appreciated, thank you.

Answer 1

You don't want to use touchesBegan - you're better off using a tap gesture recognizer. Below I have _testView, which is an instance variable I create and add to the view in viewDidLoad. I then created a tap gesture recognizer that calls a function when the view is tapped, and that function changes the color of the view - but in your case you can call your function that changes the image:
- (void)viewDidLoad {
[super viewDidLoad];
// create the test view and add it as a subview
_testView = [[UIView alloc] initWithFrame:CGRectMake(20, 100, 100, 100)];
_testView.backgroundColor = [UIColor redColor];
[self.view addSubview:_testView];
// create the tap gesture recognizer and add it to the test view
UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(changeColor)];
[_testView addGestureRecognizer:tapGestureRecognizer];
}
- (void)changeColor {
// here I'm changing the color, but you can do whatever you need once the tap is recognized
_testView.backgroundColor = [UIColor blueColor];
}
This results in this at first:
Then when I tap the view:

Answer 2

You can override -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event in your Marsugo class and change the texture there. That way, you won't have to check if the touch is inside your node because that method won't be called if it's not.