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本文探讨了Unity引擎中的Physics模块，包括Physics.Simulate手动模拟物理、Time.fixedDeltaTime设定固定帧率更新间隔以及Physics.autoSimulation自动模拟设置。讲解了如何通过Physics.Simulate实现帧率独立的物理模拟，并强调为了确保确定性结果，应使用固定的小时间步长。同时提到了Physics.SyncTransforms用于同步Transform变化到物理引擎中，确保Collider与Transform同步。
//Physics Simulate autoSimulation
Physics.Simulate
Declaration
public static void Simulate(float step);
Parameters
| step | The time to advance physics by. |
Description
Simulate physics in the Scene.
Call this to simulate physics manually when the automatic simulation is turned off. Simulation includes all the stages of collision detection, rigidbody and joints integration, and filing of the physics callbacks (contact, trigger and joints). Calling Physics.Simulate does not cause FixedUpdate to be called.
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