Add rigit body for a roach.
Added 2023-09-19 23:00:25 +0000 UTC从后面插入时，头发卡住得太深，所以我只尝试将刚体插入身体部分。
When inserting from the rear, the hair got stuck too much, so I tried inserting only the body as a rigid body.
从后面插入时，头发卡住得太深，所以我只尝试将刚体插入身体部分。
When inserting from the rear, the hair got stuck too much, so I tried inserting only the body as a rigid body.
