Rigidbody.constraints

説明

Rigidbody のシミュレーションで自由に操作できる軸をコントロールします

By default this is set to RigidbodyConstraints.None, allowing rotation and movement along all axes. In some cases, you may want to constrain a Rigidbody to only move or rotate along some axes, for example when developing 2D games. You can use the bitwise OR operator to combine multiple constraints.

ワールド空間で位置の制約が、ローカル空間で回転の制約が適用されることに注意してください。

//Attach this script to a GameObject. Attach a Rigidbody to the GameObject by clicking the GameObject in the Hierarchy and clicking the Add Component button. Search for Rigidbody in the field and select it when it shows.

using UnityEngine;

public class Example : MonoBehaviour
{
    Rigidbody m_Rigidbody;

    void Start()
    {
        m_Rigidbody = GetComponent<Rigidbody>();
        //This locks the RigidBody so that it does not move or rotate in the Z axis.
        m_Rigidbody.constraints = RigidbodyConstraints.FreezePositionZ | RigidbodyConstraints.FreezeRotationZ;
    }
}