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iOS

Richard Rodriguez
Richard Rodriguez
2,687 Points

SpriteKit :Could someone help with saving a score using NSUserDefaluts ?

This is what I have so far and it displays the score on the HUD, but how do I save that score and where do I write the code??

SKLabelNode *scoreLabel = [SKLabelNode labelNodeWithFontNamed:@"Futura-CondensedExtraBold"];
    scoreLabel.name = @"Score";
    scoreLabel.text =@"0";
    scoreLabel.fontSize = 24;
    scoreLabel.horizontalAlignmentMode = SKLabelHorizontalAlignmentModeRight;
    scoreLabel.position = CGPointMake(frame.size.width-20, -10);
    [hud addChild:scoreLabel];

    return hud;
}

-(void) addPoints: (NSInteger)points {
    self.score += points;

    SKLabelNode *scoreLabel = (SKLabelNode*) [self childNodeWithName:@"Score"];
    scoreLabel.text = [NSString stringWithFormat:@"%ld", (long)self.score];

1 Answer

Stone Preston
Stone Preston
42,016 Points

to save the score using NSUserDefaults:

// Store the score
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

    [defaults setInteger:self.score: forKey:@"score"];

you would put this code wherever you want to save the score,

to retrieve the score

// Get the score 
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

    NSInteger *retrievedScore  = [defaults integerForKey:@"score"];

you would put this code whereever you want to retrieve the score

saving the score itself to the defaults really isnt necessary. what you could do is save a high score to the defaults whenever the game is over

Richard Rodriguez
Richard Rodriguez
2,687 Points

So if i have a score label in the TitleScene, how do I make it display that value ?

Stone Preston
Stone Preston
42,016 Points

you grab the value from defaults and set the text of the label to that value:

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

    NSInteger *retrievedScore  = [defaults integerForKey:@"score"];
    self.scoreLabel.text = [NSString stringWithFormat:@"%ld", retrievedScore];

keep in mind you may need to add some checks to make sure the score actually exists in the defaults before you set the text