如何向rigidbody2D 游戲?qū)ο筇砑恿Σ⑹蛊湟怨潭ㄋ俣纫苿?dòng)？游戲?qū)ο筮€附加了一個(gè)反彈材料。private Rigidbody2D rb2D;private float thrust = 10.0f;void Start() {}void FixedUpdate() { rb2D.AddForce(new Vector2(0, 1) * thrust); }這是我從 Unity 文檔網(wǎng)站上得到的，但這似乎沒(méi)有任何作用。這是我最終使用的代碼，它似乎運(yùn)行正常。Vector2 的方向和速度可以根據(jù)質(zhì)量/重力進(jìn)行調(diào)整。float topSpeed = 15;private Rigidbody2D rb2D;private float thrust = 0.1f;void Start(){ rb2D = gameObject.GetComponent<Rigidbody2D>(); rb2D.AddForce(new Vector2(0, 1) * thrust);}void Update(){ if (rb2D.velocity.magnitude > topSpeed || rb2D.velocity.magnitude < topSpeed) rb2D.velocity = rb2D.velocity.normalized * topSpeed;}
1 回答
MM們
TA貢獻(xiàn)1886條經(jīng)驗(yàn) 獲得超2個(gè)贊
您編寫(xiě)的代碼一旦工作，將無(wú)限加速剛體。您需要將速度限制在最大速度：http ://answers.unity.com/answers/330805/view.html
rigidbody.AddForce(new Vector2(0, 1) * thrust * Time.deltaTime);
if (rigidbody.velocity.magnitude > topSpeed)
rigidbody.velocity = rigidbody.velocity.normalized * topSpeed;
如果您希望它立即將速度設(shè)置為固定值，那么您可以在每一幀上設(shè)置速度：
https://docs.unity3d.com/ScriptReference/Rigidbody-velocity.html
void FixedUpdate()
{
if (Input.GetButtonDown("Jump"))
{
// the cube is going to move upwards in 10 units per second
rb2D.velocity = new Vector3(0, 10, 0);
moving = true;
Debug.Log("jump");
}
if (moving)
{
// when the cube has moved over 1 second report it's position
t = t + Time.deltaTime;
if (t > 1.0f)
{
Debug.Log(gameObject.transform.position.y + " : " + t);
t = 0.0f;
}
}
}
您的代碼沒(méi)有顯示它，所以如果您還沒(méi)有這樣做，您需要確保它rb2D實(shí)際上設(shè)置為您要操作的對(duì)象上的 Rigidbody2d。例如，通過(guò)在 start 方法中執(zhí)行：
void Start()
{
rb2D = gameObject.GetComponent<Rigidbody2D>();
}
- 1 回答
- 0 關(guān)注
- 276 瀏覽