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.
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。搜狗输入法2026对此有专业解读
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out = "${buildDir}/generated/wire" // 指定生成的 Kotlin 代码的输出目录