/**
* \brief Implementation of sol.surface.create().
* \param l the Lua context that is calling this function
* \return number of values to return to Lua
*/
int LuaContext::surface_api_create(lua_State* l) {
Surface* surface = NULL;
if (lua_gettop(l) == 0) {
// create an empty surface with the screen size
surface = new Surface(VideoManager::get_instance()->get_quest_size());
}
else if (lua_type(l, 1) == LUA_TNUMBER) {
// create an empty surface with the specified size
int width = luaL_checkint(l, 1);
int height = luaL_checkint(l, 2);
surface = new Surface(width, height);
}
else if (lua_type(l, 1) == LUA_TSTRING) {
// load from a file
const std::string& file_name = lua_tostring(l, 1);
bool language_specific = lua_toboolean(l, 2); // default is false
surface = Surface::create_from_file(file_name, language_specific ?
Surface::DIR_LANGUAGE : Surface::DIR_SPRITES);
}
else {
luaL_typerror(l, 1, "number, string or no value");
}
if (surface == NULL) {
// Image file not found or not valid.
lua_pushnil(l);
}
else {
get_lua_context(l).add_drawable(surface);
push_surface(l, *surface);
}
return 1;
}
/**
* @brief Calls the on_draw() method of the object on top of the stack.
* @param dst_surface The destination surface.
*/
void LuaContext::on_draw(Surface& dst_surface)
{
if (find_method("on_draw"))
{
push_surface(l, dst_surface);
call_function(2, 0, "on_draw");
}
}
/**
* \brief Implementation of sol.surface.create().
* \param l The Lua context that is calling this function.
* \return Number of values to return to Lua.
*/
int LuaContext::surface_api_create(lua_State* l) {
return LuaTools::exception_boundary_handle(l, [&] {
SurfacePtr surface;
if (lua_gettop(l) == 0) {
// create an empty surface with the screen size
surface = Surface::create(Video::get_quest_size());
}
else if (lua_type(l, 1) == LUA_TNUMBER) {
// create an empty surface with the specified size
int width = LuaTools::check_int(l, 1);
int height = LuaTools::check_int(l, 2);
surface = Surface::create(width, height);
}
else if (lua_type(l, 1) == LUA_TSTRING) {
// load from a file
const std::string& file_name = lua_tostring(l, 1);
bool language_specific = LuaTools::opt_boolean(l, 2, false);
surface = Surface::create(file_name, language_specific ?
Surface::DIR_LANGUAGE : Surface::DIR_SPRITES);
}
else {
LuaTools::type_error(l, 1, "number, string or no value");
}
if (surface == nullptr) {
// Image file not found or not valid.
lua_pushnil(l);
}
else {
get_lua_context(l).add_drawable(surface);
push_surface(l, *surface);
}
return 1;
});
}
