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Real game engines use this pattern (or its 3D cousin, the Octree) for broad-phase collision detection: the quadtree quickly identifies candidate pairs, and a more expensive narrow-phase check tests the actual geometry.
，更多细节参见Line官方版本下载
为了理解母亲支离破碎的家族历史，杜耀豪踏上了旅程。（受访者供图）
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