mirror of
https://github.com/ThePhD/sol2.git
synced 2024-03-22 13:10:44 +08:00
97 lines
2.9 KiB
C++
97 lines
2.9 KiB
C++
#define SOL_ALL_SAFETIES_ON 1
|
|
#define SOL_ENABLE_INTEROP 1 // MUST be defined to use interop features
|
|
#include <sol/sol.hpp>
|
|
|
|
#include "Player.h"
|
|
#include <tolua++.h>
|
|
// pick or replace the include
|
|
// with whatever generated file you've created
|
|
#include "tolua_Player.h"
|
|
|
|
#include <iostream>
|
|
|
|
// tolua code lifted from some blog, if the link dies
|
|
// I don't know where else you're gonna find the reference,
|
|
// http://usefulgamedev.weebly.com/tolua-example.html
|
|
|
|
|
|
/* NOTE: there is no sol_lua_interop_get here,
|
|
because tolua types are -- thankfully -- memory-compatible
|
|
in most cases with sol.
|
|
Please check other examples like kaguya or LuaBribe for an example
|
|
of how to also write the getter for your type*/
|
|
template <typename T, typename Handler>
|
|
inline bool sol_lua_interop_check(sol::types<T>, lua_State* L, int relindex, sol::type index_type, Handler&& handler, sol::stack::record& tracking) {
|
|
tracking.use(1);
|
|
// just marking unused parameters for no compiler warnings
|
|
(void)index_type;
|
|
(void)handler;
|
|
int index = lua_absindex(L, relindex);
|
|
std::string name = sol::detail::short_demangle<T>();
|
|
tolua_Error tolua_err {};
|
|
int r = tolua_isusertype(L, index, name.c_str(), 0, &tolua_err);
|
|
if (r == 0) {
|
|
// tolua seems to leave garbage on the stack
|
|
// when the check fails
|
|
// thanks, tolua
|
|
lua_pop(L, 2);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void register_sol_stuff(lua_State* L) {
|
|
// grab raw state and put into state_view
|
|
// state_view is cheap to construct
|
|
sol::state_view lua(L);
|
|
// bind and set up your things: everything is entirely self-contained
|
|
lua["f"] = sol::overload(
|
|
[](Player& from_tolua) {
|
|
std::cout << "calling 1-argument version with tolua-created Player { health:" << from_tolua.getHealth() << " }" << std::endl;
|
|
sol_c_assert(from_tolua.getHealth() == 4);
|
|
},
|
|
[](Player& from_tolua, int second_arg) {
|
|
std::cout << "calling 2-argument version with tolua-created Player { health: " << from_tolua.getHealth() << " } and integer argument of "
|
|
<< second_arg << std::endl;
|
|
sol_c_assert(from_tolua.getHealth() == 4);
|
|
sol_c_assert(second_arg == 5);
|
|
});
|
|
}
|
|
|
|
void check_with_sol(lua_State* L) {
|
|
sol::state_view lua(L);
|
|
Player& obj = lua["obj"];
|
|
(void)obj;
|
|
sol_c_assert(obj.getHealth() == 4);
|
|
}
|
|
|
|
int main(int, char*[]) {
|
|
|
|
std::cout << "=== interop example (tolua) ===" << std::endl;
|
|
std::cout << "(code lifted from a sol2 user's use case: https://github.com/ThePhD/sol2/issues/511#issuecomment-331729884)" << std::endl;
|
|
|
|
lua_State* L = luaL_newstate();
|
|
|
|
luaL_openlibs(L); // initalize all lua standard library functions
|
|
tolua_open(L); // initalize tolua
|
|
tolua_Player_open(L); // make Player class accessible from LUA
|
|
|
|
|
|
register_sol_stuff(L);
|
|
|
|
const auto code = R"(
|
|
obj = Player:new()
|
|
obj:setHealth(4)
|
|
|
|
f(obj) -- call 1 argument version
|
|
f(obj, 5) -- call 2 argument version
|
|
)";
|
|
|
|
if (luaL_dostring(L, code)) {
|
|
lua_error(L); // crash on error
|
|
}
|
|
|
|
check_with_sol(L);
|
|
|
|
return 0;
|
|
} |