StackOverflow2013

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2013-09-21T14:01:20.907
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2013-09-21T14:09:00.110
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While the other answers here are certainly technically correct, whenever I come across a situation like this I see it as pointing out a potential flaw in my design. What you have is cyclic dependencies, like so: <img src="https://i.stack.imgur.com/PedX1.png" alt="enter image description here"> This isn't just a problem for your implementation, it means that there is too much <a href="http://en.wikipedia.org/wiki/Coupling_%28computer_programming%29" rel="nofollow noreferrer">coupling</a> between classes, or, conversely, too little information hiding. This means that you can't design the <code>Player</code> independently of the <code>Game</code>, for example. So if possible, I'd prefer a situation like this, where the <code>Game</code>, as the controller delegates work out to other classes. <img src="https://i.stack.imgur.com/Nkkee.png" alt="enter image description here"> One way to do this is for the <code>Game</code> to pass references to its own properties as and when the <code>Player</code> needs them. For example have <code>collision</code> take a <code>bots</code> parameter rather than the `Game <pre><code>bool collision(const std::vector<Bot&> bots) { // note pass objects by const ref is usu preferred in C++ to pass by value for (Bot bot: g.bots) ... } </code></pre> (Note in a more sophisticated approach, it could pass interfaces, i.e. abstract base classes, onto itself). If all else fails, you can go back to using a forward declaration.
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1. POHow can two Classes in C++ notice each other?
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1. POHow can two Classes in C++ notice each other?
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1. COGreat, thanks for your help and your diagrams!! It works :)
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