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POCall an update method for all instances of a class in objective c?
 

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  1. POCall an update method for all instances of a class in objective c?
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    <p>Lost in a sea of confusion, I really hope someone can help me here. This question regards how to use object oriented programming correctly, something I can't seem to do.</p> <p>I am also sharing my train of thought, if anything seems flawed please tell me.</p> <p><em>WHAT I WANT TO DO:</em></p> <p>I am making a SpriteKit game, and like all games, there is logic that needs to be run every frame. As of now, the only way I can run something every frame is using my SKScene's update method. </p> <p>A game has players, enemies, bullets, obstacles, collectibles, you name it. Each one needs to update every frame to handle the rapidly changing environment. lets take 'bullets' for example. I have a 'bullet' class in my game. The bullet has logic that needs to be run every frame. I have an 'update' method in my class to handle this logic, but I cannot find a good way to <strong>run this method every frame for all the instances of bullet.</strong></p> <p>I have attempted this many ways and all are hideous and inefficient. I have, on numerous occasions, misused to beauty of OOP to the point of sloppy code that barely achieves the task at hand.</p> <p>I need something like an <code>updateAllBullets</code> method, but even if that existed, I would then need to run an <code>updateAllEnemies</code>, <code>updateAllItems</code>, and that wouldn't even handle the subclasses of those game objects. This leads me to believe that I am misguided in how I am making this game. I am really hoping someone can work with me to get an efficient system in place, even if it means redesigning everything. I am not asking for code, of course, as I have not even provided any (I can upon request if its relevant), but I am instead asking for OOP concepts that I should be using.</p> <p>I will gladly clarify anything you have as fast as I can. Cheers.</p>
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    1. COI don't think this is about OOP, but rather working with collections. You can either store logical groups of nodes in an Array or some other collection type when you create them and then iterate through them in your update method. Or you can use enumerateChildNodesWithName. I would think that the Array would be quicker as you'd not be iterating through all nodes checking for a given name. Depending on the scale of your game, the speed might not be significant enough to matter.
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    2. COI'll bare that in mind. Any more tips on organizing your game objects in games?
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    3. COWhy not check out a SpriteKit game tutorial and take note of how the game manages it's various nodes? The submitted answer should be enough to move you forward.
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