投掷物体

Question

我有一个手臂，它工作的很好，但是，当我尝试抛出一个物体时，它不起作用。

经过一番思考，我做出这样的：

cube.GetComponent<Rigidbody2D>().velocity = player.GetComponent<Rigidbody2D>().velocity; 

而发生这种情况：

，我打算给刚体连接到手臂，但他从以重力，我试图扭转重力，但它不起作用。

我的问题是，我如何使它与手臂一起工作？

编辑：为更好地解释整个代码（这是附着在手）：

void Update() { 
     Collider2D touch = Physics2D.OverlapCircle(touchDetect.position, 0.01f, objectLayer); 
     mao1.SetBool("Ligado", ligado); 


     if (Input.GetKey(KeyCode.LeftShift)) { 
      ligado = true; 
     } else { 
      ligado = false; 
     } 

     if (Input.GetKey(KeyCode.LeftShift) && touch != null && ligado == true) 
     { 
      touch.gameObject.transform.parent = this.transform; 
      cubo.GetComponent<Rigidbody2D>().isKinematic = true; 
      Physics2D.IgnoreLayerCollision(10, 12, true); 
      cubo.GetComponent<Rigidbody2D>().velocity = player.GetComponent<Rigidbody2D>().velocity; 

     } 
     else if (touch != null && ligado == false) 
     { 
      touch.gameObject.transform.parent = null; 
      cubo.GetComponent<Rigidbody2D>().isKinematic = false; 
      Physics2D.IgnoreLayerCollision(10, 12, false); 

     }   

    } 

Answer 1

如果我没有理解好，你按LeftShift当立方体与你的手臂，它的尖端接触“粘贴“立方体到手臂，然后当你释放LeftShift时，你想把立方体放在某个方向。

可以实现在使用AddForce功能Rigidbody2D与精心计算的向量：

// In the script outside of a function 
public Transform greenCubeCenter; 

// In your Update function 
else if (touch != null && ligado == false) 
{ 
    touch.gameObject.transform.parent = null; 
    cubo.GetComponent<Rigidbody2D>().isKinematic = false; 
    Physics2D.IgnoreLayerCollision(10, 12, false); 

    // Below the important part 
    Vector2 force = (touchDetect.position - greenCubeCenter.position).normalized * ThrowForceMagnitude; // ThrowForceMagnitude needs to be defined somewhere 
    touch.GetComponent<Rigidbody2D>().AddForce(force); 
} 

，只是把一个变换是在greenCubeCenter变量立方体的中心。

该算法应该（如果我再次明白了一切好）抛出的对象从立方体远去的方向立方体 - 与ThrowForceMagnitude的力提示手臂（你需要的地方定义）

UPDATE：好吧了解一切后，

远一点这里是一个更完整的答案：

public Transform greenCubeCenter; 
public float ThrowForceMagnitude = 50.0f;  

Transform touchedObject = null; // this will hold the touched object 

void Update() { 
    Collider2D touch = Physics2D.OverlapCircle(touchDetect.position, 0.01f, objectLayer); 

    if(touch == null) // we don't do anything if we don't touch anything 
     return; 

    if (Input.GetKey(KeyCode.LeftShift)) { // let's do everything in one if 
     ligado = true; // if the arm touch the cube we set ligado to true 

     if(touchedObject == null) // we didn't have anything grabbed 
     { 
      touchedObject = touch.gameObject.transform; 
      touchedObject.parent = this.transform; // "glue" the object to the arm 
      touchedObject.GetComponent<Rigidbody2D>().isKinematic = true; // forbid other forces to move our object 
      Physics2D.IgnoreLayerCollision(10, 12, true); // I let this thing here, don't really know what it does in this context 
     } 

    } else { 
     ligado = false; // in any case we're not in "grab mode" anymore so let's set ligado to false 

     if(touchedObject != null) // if we were grabing something 
     { 
      touchedObject.parent = null; // let the object free 
      touchedObject.GetComponent<Rigidbody2D>().isKinematic = false; // let it be affected by reality again 
      Physics2D.IgnoreLayerCollision(10, 12, false); // restoring the think I didn't understand before hand 

      // Below the actual throwing part 
      Vector2 force = (touchDetect.position - greenCubeCenter.position).normalized * ThrowForceMagnitude; 
      touchedObject.GetComponent<Rigidbody2D>().AddForce(force); // actually throwing the object 

      touchedObject = null; // we let the object go so we set touchedObject to null 
     } 
    } 

    mao1.SetBool("Ligado", ligado); // updating display 
} 

这不是一个完美的代码，从算法上讲（即使是一个字）它应该是正确的，但你应该逐行深入并理解一切（我认为我已经评论足够了）。

请注意，我删除了对Cubo的引用，我认为你可以在objectLayer中获取任何东西。