Xlua 热更新 实现显示帧率

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第一步：导入Xlua插件

链接： 项目目录预览 - xLua - GitCode

进入链接，下载zip，进入Asset文件，将其中所有目录导入Unity的Asset中。

第二步：创建脚本 XLuaFPSDisplay.cs 

复制粘贴以下代码，然后将脚本挂载到任意对象。

using XLua;
using UnityEngine;public class XLuaFPSDisplay : MonoBehaviour
{LuaEnv luaEnv;void Start(){luaEnv = new LuaEnv();luaEnv.DoString("require('FPSDisplay').Start()");}void Update(){luaEnv.DoString("require('FPSDisplay').Update()");}void OnDestroy(){luaEnv.Dispose();}
}

第三步：在sublime Text或者vs中创建lua脚本  FPSDisplay.lua

复制粘贴以下代码：

local UnityEngine = CS.UnityEngine
print(UnityEngine);
local FPSDisplay = {}print("成功加载了FPSDisplay")-- 在Start函数中初始化计时器和帧数变量
function FPSDisplay.Start()FPSDisplay.deltaTime = 0.0FPSDisplay.updateRate = 4 -- 更新频率，每4帧更新一次FPSDisplay.frameCount = 0FPSDisplay.timePassed = 0.0-- 创建一个UI文本对象用来显示帧率local canvas = UnityEngine.GameObject.Find("Canvas");FPSDisplay.fpsTextObj = UnityEngine.GameObject("FPSText")FPSDisplay.fpsTextObj.transform:SetParent(canvas.transform)local rectTransform = FPSDisplay.fpsTextObj:AddComponent(typeof(UnityEngine.RectTransform))rectTransform.anchorMin = UnityEngine.Vector2.zerorectTransform.anchorMax = UnityEngine.Vector2.onerectTransform.sizeDelta = UnityEngine.Vector2.zerorectTransform.anchoredPosition3D = UnityEngine.Vector3.zerolocal textComponent = FPSDisplay.fpsTextObj:AddComponent(typeof(UnityEngine.UI.Text))
textComponent.fontSize = 78FPSDisplay.fpsTextObj:GetComponent(typeof(UnityEngine.UI.Text)).font = UnityEngine.Resources.GetBuiltinResource(typeof(UnityEngine.Font), "Arial.ttf")
end-- 在Update函数中更新帧率计数和显示
function FPSDisplay.Update()FPSDisplay.frameCount = FPSDisplay.frameCount + 1FPSDisplay.deltaTime = FPSDisplay.deltaTime + UnityEngine.Time.unscaledDeltaTimeif FPSDisplay.frameCount % FPSDisplay.updateRate == 0 thenlocal fps = FPSDisplay.updateRate / FPSDisplay.deltaTimelocal textComponent = FPSDisplay.fpsTextObj:GetComponent(typeof(UnityEngine.UI.Text))textComponent.text = string.format("FPS: %.2f", fps)FPSDisplay.deltaTime = 0.0end
end
print("代码结束")
return FPSDisplay

第四步：运行即可 

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