lua-function-test.cpp

#include <sol.hpp>
#include <iostream>
#include <tuple>

void breaking() {
    std::cout << "Nice!~\n";
}

std::tuple<double, double> breaking_multi() {
    return std::make_tuple(567.2, 2.567);
}

int main() {
    sol::state lua;
    int a = 10;
    int b = 11;
    auto breaking_lambda = [](){ std::cout << "Nice Lambda!\n"; };
    lua.set_function("arf", breaking);
    lua.set_function("arflambda", breaking_lambda);
    lua.set_function("arfmulti", breaking_multi);
    lua.script("arf()\n"
               "arflambda()\n"
               "x,y = arfmulti()\n"
               "function add_double(a, b)\n"
               "    return a + b, a + b;\n"
               "end\n"
               "function add(a, b)\n"
               "    return a + b;\n"
               "end\n"
               "function ultra_add(a, b, c)\n"
               "    return a + b + c;\n"
               "end");
    auto fd = lua.get<sol::function>("add_double");
    auto f = lua.get<sol::function>("add");
    auto fx = lua.get<sol::function>("ultra_add");
    std::tuple<int, int> arf = fd.invoke<int, int>(10, 10); // 20, 20
    std::cout << lua.get<double>("x") << ", " << lua.get<double>("y") << std::endl;
    std::cout << std::get<0>(arf) << ", " << std::get<1>(arf) << std::endl; // 21
    std::cout << f.invoke<int>(a, b) << std::endl; // 21
    std::cout << fx.invoke<int>(a, a, b) << std::endl; // 31
}