Options available to a programmer on the Main Game Loop [closed]

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Could one of you please give me a bit of insight to each one of these 4 topics, I am just a little confused on what it is asking.

I have a good idea on what passive and active rendering are, and that the use of active rendering is more sutable for games programming.

I'm just not to sure about the rest.

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The timing of the main game loop is an important component of any computer game, since it impacts on the frame rate and the real-time physics calculations needed to make the game run at a realistic (or at least playable) rate开发者_如何学Go. You are required to read up on the programming issues that affect this timing, and write a report that covers the range of options available to a programmer. Your report should consider the following headings:

1. The distinction between active and passive rendering, and an explanation of the preferred mode for a game program.

2. The division of time between the physics (or game-model) update and graphics update stages, and an explanation and analysis of the relative importance of these in a game that involves real-time physics calculations.

3. Techniques for achieving accuracy in real-time physics, and an explanation of the trade-offs that may be necessary to do this.

4. Programming techniques that can be used to try to keep the frame-rate for graphics updates to some desired rate.

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