Vector3.Lerp不在我的相機上工作

Question

我有一個2d對撞機的立方體gameObject，當有人撞上相機應該是10個單位，但順利，相機去正確的位置，但沒有阻尼。

public Transform target; 
public float damping = 0.1f; 

void OnTriggerEnter2D(Collider2D other) 
{ 
    Vector3 newPoint = Vector3.Lerp(target.transform.position, 
            target.transform.position + Vector3.up * 10.0f, 
            damping); 

    target.transform.position = newPoint; 
} 

Answer 1

這是不工作的原因是因爲你沒有正確使用Lerp。線性插值（Lerp）的數學運算如下：

假設我們有一個點(0, 0)和一個點(1, 1)。爲了計算兩點之間的差距，我們提供的值爲0.0f至1.0f。這個t表示兩點之間的比率（0.0f是(0, 0)和1.0f是(1, 1)）。例如，值0.5f將導致點​​。

現在用一個不那麼簡單的例子展開這個，考慮兩點： var a = Vector2(1.0f, -1.0f)和var b = Vector2(0.0f, 1.0f)。 Lerp(a, b, 0.5f)的結果是Vector2(0.5f, 0.0f)，因爲這是中途點。我們打電話給回答c。給我們答案的公式是c = a + (0.5f * (b - a))。這來自對線性代數的基本理解，其中從彼此中減去兩個點導致向量，並且將向量添加到點給出另一點。

好吧，現在就讓這段代碼按照你想要的方式工作。你的腳本可能看起來像這樣：

float moveTime = 10.0f; // In seconds 
float moveTimer = 0.0f; // Used for keeping track of time 

bool moving = false; // Flag letting us know if we're moving 

float heightChange = 10.0f; // This is the delta 

// These will be assigned when a collision occurs 
Vector3 target; // our target position 
Vector3 startPos; // our starting position 

void OnTriggerEnter2D(Collider2D other) 
{ 
    if (!moving) 
    { 
     // We set the target to be ten units above our current position 
     target = transform.position + Vector3.up * heightChange; 

     // And save our start position (because our actual position will be changing) 
     startPos = transform.position; 

     // Set the flag so that the movement starts 
     moving = true; 
    } 
} 

void Update() 
{ 
    // If we're currently moving and the movement hasn't finished 
    if (moving && moveTimer < moveTime) 
    { 
     // Accumulate the frame time, making the timer tick up 
     moveTimer += Time.deltaTime; 


     // calculate our ratio ("t") 
     float t = moveTimer/moveTime; 

     transform.position = Vector3.Lerp(startPos, target, t); 
    } 
    else 
    { 
     // We either haven't started moving, or have finished moving 
    } 
} 

希望這有助於！

Answer 2

i在觸發器上設置腳本，然後添加遊戲對象凸輪，然後將相機拖動到腳本，並添加凸輪。在轉換..我們的幫助！ =）

公共類CameraUp：MonoBehaviour {

public GameObject cam; 

float moveTime = 10.0f; // In seconds 
float moveTimer = 0.0f; // Used for keeping track of time 

bool moving = false; // Flag letting us know if we're moving 

float heightChange = 10.0f; // This is the delta 

// These will be assigned when a collision occurs 
Vector3 target; // our target position 
Vector3 startPos; // our starting position 


void Start() 
{ 


} 


void Update() 
{ 

    // If we're currently moving and the movement hasn't finished 
    if (moving && moveTimer < moveTime) 
    { 
     // Accumulate the frame time, making the timer tick up 
     moveTimer += Time.deltaTime; 


     // calculate our ratio ("t") 
     float t = moveTimer/moveTime; 

     cam.transform.position = Vector3.Lerp(startPos, target, t); 
    } 
    else 
    { 
     // We either haven't started moving, or have finished moving 
    } 

} 

void OnTriggerEnter2D(Collider2D other) 
{ 
    if (!moving) 
    { 
     // We set the target to be ten units above our current position 
     target = transform.position + Vector3.up * heightChange; 

     // And save our start position (because our actual position will be changing) 
     startPos = cam.transform.position; 

     // Set the flag so that the movement starts 
     moving = true; 
    } 
} 

}