接続を解除するために必要な力
ジョイントが Rigidbody2D を制限しようとするとき、これを行うために力を適用する必要があります。これは reactionForce として知られています。それぞれの Physics の更新で breakForce は reactionForce のサイズと比較されます。その力を超える場合、 OnJointBreak2D は壊れたジョイントを参照して呼び出されます。ジョイントが壊れたなら、 reactionForce や GetReactionForce を使用してジョイントを壊した実際の反力を確認できます。
Break Force は反力の量によって壊れるようにするか、Mathf.Infinity を設定して壊れないジョイントにすることができます。ジョイントを壊さないようにする場合は、Physicsの更新チェックをする必要がなくなるため、全体的にパフォーマンスが良くなります。
関連項目: reactionForce、 GetReactionForce、 OnJointBreak2D
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