c++如何集成Lua脚本引擎_c++ sol2/LuaBridge使用教程【扩展性】

#include <sol/sol.hpp>
#include <iostream>
<p>int add(int a, int b) { return a + b; }</p><p><span>立即学习</span>“<a href="https://pan.quark.cn/s/6e7abc4abb9f" style="text-decoration: underline !important; color: blue; font-weight: bolder;" rel="nofollow" target="_blank">C++免费学习笔记（深入）</a>”；</p><p>struct Vec2 {
float x = 0, y = 0;
Vec2(float x<em>, float y</em>) : x(x<em>), y(y</em>) {}
float len() const { return std::sqrt(x<em>x + y</em>y); }
};</p><p>int main() {
sol::state lua;
lua.open_libraries(); // 启用标准库（base, table, string...）</p><pre class="brush:php;toolbar:false;">// 暴露普通函数
lua.set_function("add", add);

// 暴露类（自动处理构造、成员函数、属性）
lua.new_usertype<Vec2>("Vec2",
    sol::constructors<Vec2(float, float)>(),
    "x", &Vec2::x,
    "y", &Vec2::y,
    "len", &Vec2::len
);

// 执行 Lua 脚本
lua.script(R"(
    local v = Vec2(3, 4)
    print("length:", v:len()) -- 输出: length: 5
    print("sum:", add(10, 20)) -- 输出: sum: 30
)");

return 0;

#include "LuaBridge/LuaBridge.h"
#include <iostream>
<p>int multiply(int a, int b) { return a * b; }</p><p>struct Point {
int x, y;
Point(int x<em> = 0, int y</em> = 0) : x(x<em>), y(y</em>) {}
int dist() { return x<em>x + y</em>y; }
};</p><p>int main() {
lua_State* L = luaL_newstate();
luaL_openlibs(L);</p><pre class="brush:php;toolbar:false;">// 注册全局函数
luabridge::getGlobalNamespace(L)
    .addFunction("multiply", multiply)

    // 注册类（需手动指定构造器、方法、属性）
    .beginClass<Point>("Point")
        .addConstructor<void(*) (int, int)>()
        .addProperty("x", &Point::x)
        .addProperty("y", &Point::y)
        .addFunction("dist", &Point::dist)
    .endClass();

lua_dostring(L, R"(
    local p = Point(3, 4)
    print('dist:', p:dist()) -- 输出: dist: 25
    print('mul:', multiply(6, 7)) -- 输出: mul: 42
)");

lua_close(L);
return 0;