08_CppCallLua.lua

--[[
 说明：如果需要从C++侧调用Lua，需要将UnLua模块添加到 {工程名}.Build.cs 的依赖配置里

 如果需要访问Lua原生API，则还需要添加Lua模块

 例如：
 PrivateDependencyModuleNames.AddRange(new string[]
 {
 "UnLua",
 "Lua",
 });

 本示例C++源码：
 Source\TPSProject\TutorialBlueprintFunctionLibrary.cpp
]]--

local Screen = require "Tutorials.Screen"

local M = UnLua.Class()

function M:ReceiveBeginPlay()
 local msg =
 [[

 —— 本示例来自 "Content/Script/Tutorials.08_CppCallLua.lua"
 ]]
 Screen.Print(msg)
 UE.UTutorialBlueprintFunctionLibrary.CallLuaByGlobalTable()
 Screen.Print("=================")
 UE.UTutorialBlueprintFunctionLibrary.CallLuaByFLuaTable()
end

function M.CallMe(a, b)
 local ret = a + b
 local msg = string.format("[Lua]收到来自C++的调用，a=%f b=%f，返回%f", a, b, ret)
 Screen.Print(msg)
 return ret
end

return M