Unity rigidbody2Dでよく使うメソッド一覧 ref: http://qiita.com/matsuyoro/items/e32b4fd12d20e5c06614

file0.txt

transform.localEulerAngles.z;

file1.txt

GetComponent<Rigidbody2D> ().velocity.y; // 上下
GetComponent<Rigidbody2D> ().velocity.x; // 左右

file2.txt

Vector2 v;
v.x = Mathf.Cos(Mathf.Deg2Rad * direction) * speed;
v.y = Mathf.Sin(Mathf.Deg2Rad * direction) * speed;
GetComponent<Rigidbody2D>().velocity = v;

file3.txt

GetComponent<Rigidbody2D> ().velocity.magnitude

file4.txt

dirVelocity = Mathf.Atan2 (GetComponent<Rigidbody2D>().velocity.y, GetComponent<Rigidbody2D>().velocity.x) * Mathf.Rad2Deg;

file5.txt

GetComponent<Rigidbody2D> ().constraints = RigidbodyConstraints2D.FreezeRotation; // 回転させないように、zだけ固定
GetComponent<Rigidbody2D> ().constraints = RigidbodyConstraints2D.FreezePosition; // x,y,z 全て固定

file6.txt

GetComponent<Rigidbody2D> ().constraints = RigidbodyConstraints2D.None; // x,y,zの固定解除