Unity 5 C#GUI-进度条不从0开始

由于某种原因，我的进度条是向后的，而不是向前的，它似乎不是从0开始的。它从1开始，倒计时到0。如何使此代码从0开始计数，以便进度条向前而不是向后

using UnityEngine;
using System.Collections;

public class Distance : MonoBehaviour {

private float finalGoal_dist = 0.0f;
public Transform Player;
public Transform finalGoal;


public Vector2 pos = new Vector2(20, 40);
public Vector2 size = new Vector2(120, 20);
public Texture2D emptyTex;
public Texture2D fullTex;


float t = 0;
float initialDistance;




void Start(){
    initialDistance = Vector2.Distance(Player.position, finalGoal.position);
    // print("Distance to Goal:" + initialDistance);
}


void OnGUI(){
            t = finalGoal_dist / initialDistance;
            GUI.Box(new Rect(0,0, size.x, size.y), emptyTex);
            GUI.Box(new Rect(0,0, size.x*t, size.y), fullTex);
}

// Update is called once per frame
void Update () {

    finalGoal_dist = Vector2.Distance(Player.position, finalGoal.position);
    //print("Distance to Goal:" + finalGoal_dist);
    print(t);
}
 }

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据我所知，它工作正常，但从0开始。您需要使用size.x*（1-t），因此它采用全宽减去已计算的百分比

试试这个：

GUI.Box(new Rect(0,0, size.x, size.y), emptyTex);
GUI.Box(new Rect(0,0, size.x*(1-t), size.y), fullTex);