add Game Loop Pattern

add Game Loop Pattern

Author: QianMo

Assets/Game Programming Patterns/Event Queue Pattern/README.md.meta

@@ -0,0 +1,118 @@
+//-------------------------------------------------------------------------------------
+//	GameLoopPatternExample.cs
+//-------------------------------------------------------------------------------------
+
+using UnityEngine;
+using System.Collections;
+
+
+
+namespace GameLoopPatternExample
+{
+
+ public class GameLoopPatternExample : MonoBehaviour
+ {
+ GameLoopManager GameLoop = new GameLoopManager();
+
+ void Start()
+ {
+ //进行游戏循环
+ //DoGameLoop();
+ Debug.Log("Unity已经内建了游戏循环模式，即Update( )，自己实现会导致卡死。这边仅保留代码框架，不作调用");
+ }
+
+ void Update()
+ {
+
+ }
+
+ /// <summary>
+ /// 进行游戏循环
+ /// </summary>
+ void DoGameLoop()
+ {
+ if (GameLoop==null)
+ {
+ GameLoop = new GameLoopManager();
+ }
+
+ GameLoop.DoGameLoop();
+ }
+ }
+
+
+ /// <summary>
+ /// 游戏循环manager
+ /// </summary>
+ public class GameLoopManager
+ {
+
+ /// <summary>
+ /// 游戏更新的粒度
+ /// </summary>
+ public const float MS_PER_UPDATE = 0.06F;
+ 
+ /// <summary>
+ /// 进行游戏循环
+ /// </summary>
+ public void DoGameLoop()
+ {
+ double previous = Time.realtimeSinceStartup;
+ double lag = 0.0;
+ if (Time.realtimeSinceStartup==0f)
+ {
+ return;
+ }
+ while (true)
+ {
+ //当前时间
+ double current = Time.realtimeSinceStartup;
+ //消逝的时间
+ double elapsed = current - previous;
+ previous = current;
+ lag += elapsed;
+ //ProcessInput();
+
+ while (lag >= MS_PER_UPDATE)
+ {
+ //Update();
+ lag -= MS_PER_UPDATE;
+ }
+
+ //Render();
+ }
+ }
+
+
+ /// <summary>
+ /// 处理按键消息
+ /// </summary>
+ void ProcessInput()
+ {
+ if (Input.GetKeyDown(KeyCode.Alpha1))
+ {
+ Debug.Log("[GameLoopManager]你按下了键盘1键！");
+ }
+ }
+
+ /// <summary>
+ /// 进行渲染
+ /// </summary>
+ void Render()
+ {
+ //do render
+ }
+
+ /// <summary>
+ /// 处理更新
+ /// </summary>
+ void Update()
+ {
+ //do update
+ }
+
+ }
+
+
+
+}