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copied!<p>Here's a basic (very high level pseudo-code) game loop:</p> <pre><code>void RunGameLoop() { // record the frame time and calculate the time since the last frame float timeTemp = time(); float deltaTime = timeTemp - lastFrameTime; lastFrameTime = timeTemp; // iterate through all units and let them update unitManager->update(deltaTime); // iterate through all units and let them draw drawManager->draw(); } </code></pre> <p>The purpose of passing deltaTime (the time since the last frame in seconds) to unitManager->update() is so that when the units are updating, they can multiply their movement by deltaTime so their values can be in units per second.</p> <pre><code>abstract class Unit { public: abstract void update(float deltaTime); } FallingBlockUnit::update(float deltaTime) { moveDown(fallSpeed * deltaTime); } </code></pre> <p>The draw manager is going to be responsible for managing the draw buffers (I suggest double buffering to prevent screen flicker)</p> <pre><code>DrawManager::draw() { // set the back buffer to a blank color backBuffer->clear(); // draw all units here // limit the frame rate by sleeping until the next frame should be drawn // const float frameDuration = 1.0f / framesPerSecond; float sleepTime = lastDrawTime + frameDuration - time(); sleep(sleepTime); lastDrawTime = time(); // swap the back buffer to the front frontBuffer->draw(backBuffer); } </code></pre> <p>For further research, here's a book that my Game Programming professor wrote about 2d game programming. <a href="http://rads.stackoverflow.com/amzn/click/1466501898" rel="nofollow">http://www.amazon.com/Graphics-Programming-Games-John-Pile/dp/1466501898</a></p>

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