Merge pull request #179 from darkf/exit

Rework how exiting and cleanup is handled.

rwgame/RWGame.cpp

@@ -35,6 +35,7 @@ StdOutReciever logPrinter;
 RWGame::RWGame(int argc, char* argv[])
 	: config("openrw.ini")
 	, state(nullptr), world(nullptr), renderer(nullptr), script(nullptr),
+	window(nullptr), work(nullptr),
 	debugScript(false), inFocus(true),
 	showDebugStats(false), showDebugPaths(false), showDebugPhysics(false),
 	accum(0.f), timescale(1.f)
@@ -90,8 +91,11 @@ RWGame::RWGame(int argc, char* argv[])
 	if (SDL_Init(SDL_INIT_VIDEO) < 0)
 		throw std::runtime_error("Failed to initialize SDL2!");
 
-	window.create(w, h, fullscreen);
-	window.hideCursor();
+	window = new GameWindow();
+	window->create(w, h, fullscreen);
+	window->hideCursor();
+
+	work = new WorkContext();
 
 	log.addReciever(&logPrinter);
 	log.info("Game", "Game directory: " + config.getGameDataPath());
@@ -101,7 +105,7 @@ RWGame::RWGame(int argc, char* argv[])
 		throw std::runtime_error("Invalid game directory path: " + config.getGameDataPath());
 	}
 
-	data = new GameData(&log, &work, config.getGameDataPath());
+	data = new GameData(&log, work, config.getGameDataPath());
 
 	// Initalize all the archives.
 	data->loadIMG("/models/gta3");
@@ -168,10 +172,30 @@ RWGame::RWGame(int argc, char* argv[])
 
 RWGame::~RWGame()
 {
+	log.info("Game", "Beginning cleanup");
+
+	log.info("Game", "Stopping work queue");
+	work->stop();
+
+	log.info("Game", "Cleaning up scripts");
 	delete script;
+
+	log.info("Game", "Cleaning up renderer");
 	delete renderer;
+
+	log.info("Game", "Cleaning up world");
 	delete world;
+	
+	log.info("Game", "Cleaning up state");
 	delete state;
+
+	log.info("Game", "Cleaning up window");
+	delete window;
+
+	log.info("Game", "Cleaning up work queue");
+	delete work;
+
+	log.info("Game", "Done cleaning up");
 }
 
 void RWGame::newGame()
@@ -183,7 +207,7 @@ void RWGame::newGame()
 	}
 
 	state = new GameState();
-	world = new GameWorld(&log, &work, data);
+	world = new GameWorld(&log, work, data);
 	world->dynamicsWorld->setDebugDrawer(debug);
 
 	// Associate the new world with the new state and vice versa
@@ -294,8 +318,8 @@ int RWGame::run()
 {
 	last_clock_time = clock.now();
 
-	// Loop until the window is closed or we run out of state.
-	while (window.isOpen() && StateManager::get().states.size()) {
+	// Loop until we run out of states.
+	while (StateManager::get().states.size()) {
 		State* state = StateManager::get().states.back();
 
 		RW_PROFILE_FRAME_BOUNDARY();
@@ -305,7 +329,7 @@ int RWGame::run()
 		while (SDL_PollEvent(&event)) {
 			switch (event.type) {
 			case SDL_QUIT:
-				window.close();
+				StateManager::get().clear();
 				break;
 
 			case SDL_WINDOWEVENT:
@@ -343,14 +367,14 @@ int RWGame::run()
 
 		RW_PROFILE_BEGIN("Update");
 		if ( accum >= GAME_TIMESTEP ) {
-			RW_PROFILE_BEGIN("state");
-			StateManager::get().tick(GAME_TIMESTEP);
-			RW_PROFILE_END();
-
 			if (StateManager::get().states.size() == 0) {
 				break;
 			}
 
+			RW_PROFILE_BEGIN("state");
+			StateManager::get().tick(GAME_TIMESTEP);
+			RW_PROFILE_END();
+
 			RW_PROFILE_BEGIN("engine");
 			tick(GAME_TIMESTEP);
 			RW_PROFILE_END();
@@ -385,7 +409,7 @@ int RWGame::run()
 
 		renderProfile();
 
-		window.swap();
+		window->swap();
 	}
 
     if( httpserver_thread )
@@ -483,7 +507,7 @@ void RWGame::render(float alpha, float time)
 	
 	getRenderer()->getRenderer()->swap();
 
-	glm::ivec2 windowSize = window.getSize();
+	glm::ivec2 windowSize = window->getSize();
 	renderer->setViewport(windowSize.x, windowSize.y);
 
 	ViewCamera viewCam;

rwgame/RWGame.hpp

@@ -28,11 +28,11 @@ class RWGame
 	GameRenderer* renderer;
     ScriptMachine* script;
 	// Background worker
-	WorkContext work;
+	WorkContext *work;
 	bool debugScript;
     HttpServer* httpserver = nullptr;
     std::thread* httpserver_thread = nullptr;
-	GameWindow window;
+	GameWindow *window;
 	std::chrono::steady_clock clock;
 	std::chrono::steady_clock::time_point last_clock_time;
 
@@ -79,7 +79,7 @@ public:
 
 	GameWindow& getWindow()
 	{
-		return window;
+		return *window;
 	}
 
 	ScriptMachine* getScript() const

rwgame/State.hpp

@@ -81,6 +81,11 @@ struct StateManager
 	
 	std::deque<State*> states;
 
+	void clear()
+	{
+		states.clear();
+	}
+	
 	void enter(State* state)
 	{
 		states.push_back(state);

rwgame/menustate.cpp

@@ -20,7 +20,7 @@ void MenuState::enterMainMenu()
 	m->addEntry(Menu::lambda("Load Game", [=] { enterLoadMenu(); }));
 	m->addEntry(Menu::lambda("Test", [=] { StateManager::get().enter(new IngameState(game, true, "test")); }));
 	m->addEntry(Menu::lambda("Options", [] { RW_UNIMPLEMENTED("Options Menu"); }));
-	m->addEntry(Menu::lambda("Exit", [=] { getWindow().close(); }));
+	m->addEntry(Menu::lambda("Exit", [] { StateManager::get().clear(); }));
 	this->enterMenu(m);
 }
 

rwgame/pausestate.cpp

@@ -10,7 +10,7 @@ PauseState::PauseState(RWGame* game)
 	m->offset = glm::vec2( 200.f, 200.f );
 	m->addEntry(Menu::lambda("Continue", [] { StateManager::get().exit(); }));
 	m->addEntry(Menu::lambda("Options", [] { std::cout << "Options" << std::endl; }));
-	m->addEntry(Menu::lambda("Exit", [&] { getWindow().close(); }));
+	m->addEntry(Menu::lambda("Exit", [] { StateManager::get().clear(); }));
 	this->enterMenu(m);
 }
 

rwlib/source/job/WorkContext.cpp

@@ -12,20 +12,21 @@ void WorkContext::workNext()
 {
 	WorkJob* j = nullptr;
 
-	_inMutex.lock();
+	{
+		std::lock_guard<std::mutex> guard( _inMutex );
+
 		if( ! _workQueue.empty() ) {
 			j = _workQueue.front();
 			_workQueue.pop();
 		}
-	_inMutex.unlock();
+	}
 
 	if( j == nullptr ) return;
 
 	j->work();
 	
-	_outMutex.lock();
+	std::lock_guard<std::mutex> guard( _outMutex );
 	_completeQueue.push(j);
-	_outMutex.unlock();
 }
 
 void WorkContext::update()

rwlib/source/job/WorkContext.hpp

@@ -5,8 +5,11 @@
 #include <queue>
 #include <thread>
 #include <mutex>
+#include <atomic>
+#include <memory>
 #include <functional>
 #include <fstream>
+#include <iostream>
 
 class WorkContext;
 
@@ -16,7 +19,7 @@ class LoadWorker
 
 public:
 
-	bool _running;
+	std::atomic<bool> _running;
 	std::thread _thread;
 	void start();
 
@@ -66,26 +69,32 @@ class GameWorld;
  */
 class WorkContext
 {
+	std::unique_ptr<LoadWorker> _worker;
+
 	std::queue<WorkJob*> _workQueue;
 	std::queue<WorkJob*> _completeQueue;
 
-	LoadWorker _worker;
-
 	std::mutex _inMutex;
 	std::mutex _outMutex;
 
 public:
 
 	WorkContext()
-		: _worker(this) { }
+		: _worker(new LoadWorker(this)) { }
 
 	void queueJob( WorkJob* job )
 	{
-		std::lock_guard<std::mutex> guard(_inMutex);
+		std::lock_guard<std::mutex> guard( _inMutex );
 		_workQueue.push( job );
 	}
 
-	// Called by the worker thread - don't touch;
+	void stop()
+	{
+		// Stop serving the queue.
+		_worker.reset(nullptr);
+	}
+
+	// Called by the worker thread - don't touch
 	void workNext();
 
 	const std::queue<WorkJob*> getWorkQueue() const { return _workQueue; }