NGUI的技能冷却实现

 1 using UnityEngine;
 2 using System.Collections;
 3 
 4 public class ReleaseSkill : MonoBehaviour {
 5     UISprite skillSprite;   //负责技能冷却
 6     public float releaseSpeed = 0.5f;
 7     public float needMP = 30f;
 8     public float totalMP = 100f;
 9     public GameObject cardPrefab;
10     public GameObject parent;
11 
12     bool isCooling;                  //是否正在冷却
13     // Use this for initialization
14     void Start () {
15         skillSprite = transform.GetChild(0).GetComponent<UISprite> ();
16 
17         skillSprite.fillAmount = 0;
18         isCooling = true;
19 
20     }
21     
22     // Update is called once per frame
23     void Update () {
24         if (Input.GetKeyDown (KeyCode.M)) {
25             if (!isCooling && totalMP > needMP) {
26                 //释放技能
27                 totalMP -= 20;
28                 
29                 //技能完全冷却
30                 skillSprite.fillAmount = 1;
31                 isCooling = true;
32             } 
33         }
34 
35         if (isCooling) {
36             //经过一段时间冷却技能
37             skillSprite.fillAmount -= releaseSpeed * Time.deltaTime;
38             if(skillSprite.fillAmount <= 0)
39             {
40                 skillSprite.fillAmount = 0;
41                 isCooling = false;
42             }            
43         }
44     }
45 }