• 在Unity5中使用C#脚本实现UI的下滑、变色、渐隐渐现效果


     一、首先,我们先创建一个Text
        依次选择Component→UI→Text创建一个Text,创建完成后如下:

    二、创建完成后,在Project面板点击Create→C# Script,本例命名为InAndFade 
    三、编写代码之前,为了确保能够调用到Text类,所以要先手动引入命名空间

    using UnityEngine.UI;
     四、完整代码如下
     1 public class InAndFade : MonoBehaviour
     2 {
     3     //渐隐渐现
     4     public bool Show = true;
     5     public bool Fade = false;
     6     public float duration = 2.5f;
     7     public float timeFromStart = 0f;    //从场景加载开始经过这些时间后再发生
     8     //向下滑动
     9     public bool isSlide = true; //是否从上往下滑动
    10     public float offset = -1.0f;    //偏差为10
    11     //变色
    12     public bool isChangeColor = true;
    13     //等待
    14     private bool wait = true;
    15     void Start()
    16     {
    17         if (Show && Fade)
    18         {
    19             Fade = false;
    20         }
    21         else if (!Show && !Fade)
    22         {
    23             Show = true;
    24         }
    25     }
    26     IEnumerator Wait()
    27     {
    28         yield return new WaitForSeconds(timeFromStart);
    29     }
    30     void Update()
    31     {
    32         #region 变色代码
    33         if (isChangeColor)
    34         {
    35             Color nowColor = gameObject.GetComponent<Text>().color;
    36             if (nowColor.r != 0 && nowColor.g != 255 && nowColor.b != 255)
    37             {
    38                 nowColor.r--;
    39                 nowColor.g += 2.8f;
    40                 nowColor.b += 0.9f;
    41             }
    42             gameObject.GetComponent<Text>().color = nowColor;
    43             if (nowColor.g >= 40 && nowColor.g <= 255)
    44             {
    45                 nowColor.g--;
    46             }
    47         } 
    48         #endregion
    49         #region 滑动代码
    50         if (isSlide)
    51         {
    52             Vector3 initialPos = gameObject.GetComponent<Transform>().position;
    53             float posProportion = Time.time / duration;
    54             Vector3 nowPos = new Vector3(initialPos.x, Mathf.Lerp(initialPos.y + offset, initialPos.y, posProportion), initialPos.z);
    55             gameObject.transform.position = nowPos;
    56         }
    57         #endregion
    58         #region 渐隐渐现代码
    59         if (wait)
    60         {
    61             StartCoroutine(Wait());
    62         }
    63         if (Fade)
    64         {
    65             if (Time.time > duration)
    66             {
    67                 Destroy(gameObject);
    68             }
    69             Color newColor = gameObject.GetComponent<Text>().color;
    70             float proportion = Time.time / duration;
    71             newColor.a = Mathf.Lerp(1, 0, proportion);
    72             gameObject.GetComponent<Text>().color = newColor;
    73         }
    74         if (Show)
    75         {
    76             Color newColor = gameObject.GetComponent<Text>().color;
    77             float proportion = Time.time / duration;
    78             newColor.a = Mathf.Lerp(0, 1, proportion);
    79             gameObject.GetComponent<Text>().color = newColor;
    80         }
    81         #endregion
    82     }
    83 }
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  • 原文地址:https://www.cnblogs.com/sc2015/p/5532016.html
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