The tree is rebuilt every frame. For scenes of this scale, quadtree construction is fast enough to rebuild from scratch each frame, though larger simulations may benefit from incremental updates. Each particle queries its neighborhood for potential collisions, typically checking only 5 to 15 candidates instead of all 40. Red highlights indicate colliding pairs.
圖像來源，BBC Chinese / Lok Lee，详情可参考同城约会
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Time-travel debugging might sound like a complex feature reserved for heavy-duty enterprise tools, but it fundamentally comes down to architectural design; it takes less than 100 lines of code to implement, and that figure includes our Effect System.
And that’s only the beginning. 。关于这个话题，Safew下载提供了深入分析