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    <p>When you synthesize a private variable (other classes cannot see it) you allow a way for other classes to see and/or modify the value of that variable.</p> <p>First, you want to create the variable:</p> <pre><code>NSMutableArray *_targets; NSMutableArray *_projectiles; int _score; CCLabelTTF *_scoreLabel; </code></pre> <p>Then in your init method to set the <code>_score</code> to <code>0</code>:</p> <pre><code>-(id) init { if( (self=[super init] )) { [self schedule:@selector(update:)]; _score = 0; </code></pre> <p>Then increment (add 1 to) your <code>_score</code> variable and set the string (the text content) of your <code>_scoreLabel</code> to that value.</p> <pre><code> if (CGRectIntersectsRect(projectileRect, targetRect)) { [targetsToDelete addObject:target]; _score++; [_scoreLabel setString:[NSString stringWithFormat:@"%d", _score]]; } </code></pre> <p>The line <code>[_scoreLabel setString:[NSString stringWithFormat:@"%d", _score]];</code> is a way to convert the integer of <code>_score</code> to a string (<code>NSString</code>). It's an old C way of doing it, the <code>%d</code> means that whatever is going to be there should be displayed as an integer as opposed to a float (having decimal points).</p> <p>It also looks like you need to "instantiate" your label and add it as a child to the layer. Instantiation is just a fancy term for creating a instance of something. Think of a "class" as a blueprint for a chair, and an "instance" as a chair created from that blueprint. Once you have the chair created (an instance), you can modify it (paint it, add/remove legs, etc).</p> <p>So, to instantiate your label and add it to the layer (itself):</p> <pre><code>-(id) init { if( (self=[super init] )) { [self schedule:@selector(update:)]; _score = 0; //Create label _scoreLabel = [CCLabelTTF labelWithString:@"0" fontName:@"Marker Felt" fontSize:16]; //Add it to a layer (itself) [self addChild:_scoreLabel]; </code></pre>
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    1. COTHANK YOU **SOOOOOOO MUCH!!**
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    2. CONo problem, also, I forgot the synthesize variable. But, KK posted a great answer, and to be honest, his is more comprehensive and is better long-term solution.
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