Lerp.localScale不工作OnTriggerEnter，Unity5.3.3，齒輪VR應用開發

Question

我一棟齒輪VR APP，我想我的性格縮減在進入箱撞機區，我可以通過它的規模了所有的突然使用transform.localScale = new Vector3（0.3F，0.3F，0.3F）;但我想它做smoothly.Dont KNW爲什麼它不拿起這個線性插值線項目可以在任何一個helpp的原因???我標記我的盒子對撞機（立方體「瑪尼」）還有一兩件事，我OnTriggerExit線性插值一個也沒有打電話。

#pragma strict 

var newScale : Vector3 = Vector3 (0.1,0.1,0.1); 

var Grow : Vector3 = Vector3 (1,1,1); 
var speed : float =2.0; 

function Start() { 
    transform.localScale = new Vector3(1F,1F,1F); 
} 

function Update() { 

} 

function OnTriggerEnter (info : Collider) { 

    if(info.tag == "Mani") { 
    transform.localScale =Vector3.Lerp(transform.localScale, newScale, speed * Time.deltaTime/2); 
    //transform.localScale = new Vector3(0.3F,0.3F,0.3F); 
    Debug.Log("Player hit new cube"); 
    } 

} 


function OnTriggerExit (Col : Collider) { 

    if(Col.tag == "Mani") { 
    // transform.localScale = new Vector3(transform.localScale.x, 1F, transform.localScale.y); 
    transform.localScale =Vector3.Lerp(newScale, Grow, speed * Time.deltaTime); //transform.localScale = new Vector3(1F,1F,1F); Debug.Log("Player left cube"); 
    } 

} 

Answer 1

您誤解了Lerp的功能。 Lerp本身不會動畫任何東西，它只是通過t在兩個值之間進行插值，其中t的範圍是0到1.您可以將t設想爲百分比 - >如果t爲0，則lerp的結果是第一個值（或者在v3的情況下也是在第二個方向上0％），如果t是1，結果是第二個，如果t是0.5，結果位於兩者的中間，所以如果它的0.25在25％（Slerp是基本上是一樣的，只不過這個值代表一個輪換，查看維基百科的更多信息）。

但到底是什麼，到底對你意味着什麼？

你需要調用線性插值多次和t設置爲你在時間，其中。一種選擇是，一旦玩家進入/退出觸發器，開始一個協同程序並逐漸減少每幀(1/seconds) * Time.deltaTime。

編輯：

附加到一個可見的gameobject並運行它。它認爲它應該清楚Lerp的工作方式。重要的部分是t。它需要隨着時間的推移而減少以產生動畫效果。

using UnityEngine; 

public class LerpExample : MonoBehaviour { 

    public Vector3 targetScale = new Vector3(2, 2, 2); 
    public float duration = 2; 

    Vector3 originalScale; 
    float timeFactor; 
    float t; 

    void Start() { 
     originalScale = transform.localScale; 

     //since only values between 0 and 1 will do something 
     //we need to know "how much" Time.deltaTime affects our lerping 
     //ofc we could calculate it "on the fly", but it stays the same so better store it 
     timeFactor = 1/duration; 

     t = 0; 
    } 

    void Update() { 

     //this is just so it repeats over and over 
     //if t would grow bigger than 1, it would just be interpreted as 1 by Lerp 
     if (t > 1) t -= 1; 

     //this is what animates it in the end. each frame (its the update method!) a fraction gets added to t. think of it as percentage. 
     t += timeFactor * Time.deltaTime; 
     transform.localScale = Vector3.Lerp(originalScale, targetScale, t); 

    } 
} 

edit2：好的，這是上面運行的協程。雖然這是一個小的「陷阱」。當縮放結束前玩家離開觸發器時，我沒有考慮過。如果他這樣做，則持續時間不一致。如果例如10秒，他在2秒後離開，他將在10秒內縮回到正常，而不是2秒。如果你想修復它，我會讓你解決。

此進至觸發

using UnityEngine; 

public class Cake : MonoBehaviour { 

    public Vector3 targetScale = new Vector3(2, 2, 2); 
    public float duration = 2; 

    void OnTriggerEnter(Collider other) { 
     Alice alice = other.GetComponentInParent<Alice>(); 
     if (alice == null) return; 
     alice.Eat(this); 
    } 
    void OnTriggerExit(Collider other) { 
     Alice alice = other.GetComponentInParent<Alice>(); 
     if (alice == null) return; 
     alice.GrowBackToNormal(this); 
    } 

} 

和這正好到物體進入觸發

using UnityEngine; 
using System.Collections; 

public class Alice : MonoBehaviour { 

    Vector3 originalScale; 
    Coroutine eatAllTheCakeCoroutine; 

    void Start() { 
     originalScale = transform.localScale; 
    } 

    IEnumerator ChangeScale(Vector3 targetScale, float duration) { 
     Vector3 startScale = transform.localScale; 
     float timeFactor = 1/duration; 
     float t = 0; 
     while (t < 1) { 
      t += timeFactor * Time.deltaTime; 
      transform.localScale = Vector3.Lerp(startScale, targetScale, t); 
      yield return null; 
     } 
     transform.localScale = targetScale; 
    } 

    public void Eat(Cake cake) { 
     if (eatAllTheCakeCoroutine != null) StopCoroutine(eatAllTheCakeCoroutine); 
     eatAllTheCakeCoroutine = StartCoroutine(ChangeScale(cake.targetScale, cake.duration)); 

    } 
    public void GrowBackToNormal(Cake cake) { 
     if(eatAllTheCakeCoroutine != null) StopCoroutine(eatAllTheCakeCoroutine); 
     eatAllTheCakeCoroutine = StartCoroutine(ChangeScale(originalScale, cake.duration)); 
    } 
}