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/**
* @file script.cpp
* Manages all Lua scripts.
*
* Copyright (C) 2019 Belle-Isle, Andrew <drumsetmonkey@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <script.hpp>
/*********************
* SYSTEM SPECIFIC *
*********************/
void ScriptSystem::configure([[maybe_unused]]entityx::EntityManager& entities,
[[maybe_unused]]entityx::EventManager& events)
{
this->manager = &entities;
this->events = &events;
events.subscribe<EntitySpawnEvent>(*this);
init();
}
void ScriptSystem::update([[maybe_unused]] entityx::EntityManager& entites,
[[maybe_unused]] entityx::EventManager& events,
[[maybe_unused]] entityx::TimeDelta dt)
{
}
void ScriptSystem::receive(const EntitySpawnEvent &toSpawn)
{
(void)toSpawn;
}
/*********************
* CLASS FUNCTIONS *
*********************/
int ScriptSystem::init(void)
{
lua.open_libraries(sol::lib::base);
scriptExport();
doFile();
return 0;
}
// TODO move all of these below once the test printouts are gone
#include <components/Position.hpp>
#include <components/Name.hpp>
#include <components/Render.hpp>
#include <components/IdleFunc.hpp>
void ScriptSystem::doFile(void)
{
auto result = lua.script_file("Scripts/init.lua");
if (!result.valid()) {
std::cout << "Lua error: " << std::endl;
}
manager->each<Position>(
[&](entityx::Entity, Position& p)
{std::cout << p.x << "," << p.y << std::endl;});
manager->each<Name>(
[&](entityx::Entity, Name& n)
{std::cout << n.name << std::endl;});
manager->each<Render>(
[&](entityx::Entity, Render& r)
{std::cout << r.texture << ": " << r.visible << std::endl;});
}
/********************
* SCRIPT PARSING *
********************/
// TODO here
void ScriptSystem::scriptExport()
{
std::function<sol::table(sol::table)> func =
[this](sol::table t){ return spawn(t);};
lua.new_usertype<Position>("Position",
sol::constructors<Position(float x, float y), Position()>(),
"x", &Position::x,
"y", &Position::y);
lua.new_usertype<Name>("Name",
sol::constructors<Name(std::string), Name()>(),
"value", &Name::name);
lua.new_usertype<Render>("Render",
sol::constructors<Render(std::string), Render()>(),
"visible", &Render::visible,
"texture", &Render::texture);
auto gamespace = lua["game"].get_or_create<sol::table>();
gamespace.set_function("spawn", func);
}
sol::table ScriptSystem::spawn(sol::object param)
{
sol::table toRet = lua.create_table_with();
if (param.get_type() == sol::type::table) {
sol::table tab = param;
entityx::Entity e = manager->create();
if (tab["Position"] != nullptr) {
toRet["Position"] =
e.assign<Position>(Position().FromLua(tab["Position"])).get();
}
if (tab["init"] != nullptr) {
toRet["init"] = tab["init"];
}
if (tab["Name"] != nullptr) {
toRet["Name"] =
e.assign<Name>(Name().FromLua(tab["Name"])).get();
}
if (tab["Render"] != nullptr) {
toRet["Render"] =
e.assign<Render>(Render().FromLua(tab["Render"])).get();
}
} else {
std::cerr << "Parameter to spawn() must be a table!" << std::endl;
}
return toRet;
}
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