无法转换类型`UnityEngine.GameObject＆＃39;到'UnityEngine.Rigidbody＆＃39;

Question

我有一些错误！

Unity 3D

    Rigidbody bullet = (Rigidbody)Instantiate(projectile, transform.position + transform.forward, transform.rotation);
    bullet.AddForce(transform.forward * bulletImpulse, ForceMode.Impulse);

但我在此代码中出现错误

  

无法转换类型UnityEngine.GameObject' to UnityEngine.Rigidbody＆＃39;

谢谢你的帮助 请帮助！

Answer 1

Instantiate方法返回GameObject，而不是Rigidbody。 Rigidbody是该游戏对象的组件，因此要获得它，您必须致电GetComponent：

GameObject gameObject = (GameObject)Instantiate(projectile, transform.position + transform.forward, transform.rotation);
Rigidbody bullet = gameObject.GetComponent<Rigidbody>();

Answer 2

您需要使用组件：

https://docs.unity3d.com/ScriptReference/GameObject.GetComponent.html

最终代码：

Rigidbody bullet = ((GameObject)Instantiate(projectile, transform.position + transform.forward, transform.rotation)).GetComponent<Rigidbody>();
bullet.AddForce(transform.forward * bulletImpulse, ForceMode.Impulse);