Collider 2D コンポーネントは、物理衝突を目的で 2D ゲームオブジェクト形状を定義します。コライダーは目に見えないので、ゲームオブジェクトのメッシュと正確に同じ形状にする必要はありません。実際、大ざっぱにあわせた方が、ゲームプレイにはより効率が良く、違いもわかりません。
2D ゲームオブジェクトのコライダーはすべて、名称の最後が「2D」となっています。名称に「2D」のないコライダーは、すべて 3D ゲームオブジェクトです。3D ゲームオブジェクトと 2D コライダー、または、2D ゲームオブジェクトと 3D コライダーは混在できないので、気を付けてください。
Rigidbody 2D と一緒に使用できる Collider 2D の種類は以下の通りです。
Rigidbody 2D コンポーネントで Use Auto Mass チェックボックスを有効にすると、自動的に Rigidbody 2D の質量を Collider 2D と等しい値に設定します。これは、Buoyancy Effector 2D と一緒に使用すると特に効果的です。
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.