为使此关节断开而需要施加的力。
当关节尝试约束 Rigidbody2D 时，可能需要施加力才能执行此操作。这称为 reactionForce。每次进行物理更新时，breakForce 都会与 reactionForce 的大小进行比较；如果超出，则使用对断开的关节的引用来调用 OnJointBreak2D。如果知道断开的关节，可以使用 reactionForce 或 GetReactionForce 检查使关节断开的实际反应力。
断开力可以设置为 Mathf.Infinity，这样，无论多大的反应力都不能断开关节。如果从不打算使用力使关节断开，则应使用此值，因为它指示每次进行物理更新时都不应检查关节，因此可提供更好的整体性能。
另请参阅：reactionForce、GetReactionForce 和 OnJointBreak2D。
Did you find this page useful? Please give it a rating:
Thanks for rating this page!
What kind of problem would you like to report?
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
Provide more information
You've told us this page needs code samples. If you'd like to help us further, you could provide a code sample, or tell us about what kind of code sample you'd like to see:
You've told us there are code samples on this page which don't work. If you know how to fix it, or have something better we could use instead, please let us know:
You've told us there is information missing from this page. Please tell us more about what's missing:
You've told us there is incorrect information on this page. If you know what we should change to make it correct, please tell us:
You've told us this page has unclear or confusing information. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:
You've told us there is a spelling or grammar error on this page. Please tell us what's wrong:
You've told us this page has a problem. Please tell us more about what's wrong:
Thank you for helping to make the Unity documentation better!
Your feedback has been submitted as a ticket for our documentation team to review.
We are not able to reply to every ticket submitted.