private void switchState(GameState newState) {
if (currentState != null) {
currentState.dispose();
}
currentState = newState;
LoggingContext.setGameState(newState);
newState.init(this);
for (StateChangeSubscriber subscriber : stateChangeSubscribers) {
subscriber.onStateChange();
}
// drain input queues
InputSystem inputSystem = rootContext.get(InputSystem.class);
inputSystem.getMouseDevice().getInputQueue();
inputSystem.getKeyboard().getInputQueue();
}
private void cleanup() {
logger.info("Shutting down Terasology...");
changeStatus(StandardGameStatus.SHUTTING_DOWN);
if (currentState != null) {
currentState.dispose();
currentState = null;
}
Iterator<EngineSubsystem> preshutdownIter = allSubsystems.descendingIterator();
while (preshutdownIter.hasNext()) {
EngineSubsystem subsystem = preshutdownIter.next();
try {
subsystem.preShutdown();
} catch (RuntimeException e) {
logger.error("Error preparing to shutdown {} subsystem", subsystem.getName(), e);
}
}
Iterator<EngineSubsystem> shutdownIter = allSubsystems.descendingIterator();
while (shutdownIter.hasNext()) {
EngineSubsystem subsystem = shutdownIter.next();
try {
subsystem.shutdown();
} catch (RuntimeException e) {
logger.error("Error shutting down {} subsystem", subsystem.getName(), e);
}
}
}
/**
* The main loop runs until the EngineState is set back to INITIALIZED by shutdown() or until the
* OS requests the application's window to be closed. Engine cleanup and disposal occur
* afterwards.
*/
private void mainLoop() {
PerformanceMonitor.startActivity("Other");
// MAIN GAME LOOP
while (!shutdownRequested) {
assetTypeManager.reloadChangedOnDisk();
processPendingState();
if (currentState == null) {
shutdown();
break;
}
Iterator<Float> updateCycles = timeSubsystem.getEngineTime().tick();
for (EngineSubsystem subsystem : allSubsystems) {
try (Activity ignored =
PerformanceMonitor.startActivity(subsystem.getName() + " PreUpdate")) {
subsystem.preUpdate(currentState, timeSubsystem.getEngineTime().getRealDelta());
}
}
while (updateCycles.hasNext()) {
float updateDelta = updateCycles.next(); // gameTime gets updated here!
try (Activity ignored = PerformanceMonitor.startActivity("Main Update")) {
currentState.update(updateDelta);
}
}
// Waiting processes are set by modules via GameThread.a/synch() methods.
GameThread.processWaitingProcesses();
for (EngineSubsystem subsystem : getSubsystems()) {
try (Activity ignored =
PerformanceMonitor.startActivity(subsystem.getName() + " Subsystem postUpdate")) {
subsystem.postUpdate(currentState, timeSubsystem.getEngineTime().getRealDelta());
}
}
assetTypeManager.disposedUnusedAssets();
PerformanceMonitor.rollCycle();
PerformanceMonitor.startActivity("Other");
}
PerformanceMonitor.endActivity();
}
private void cleanup() {
logger.info("Shutting down Terasology...");
try {
Iterator<EngineSubsystem> iter = subsystems.descendingIterator();
while (iter.hasNext()) {
EngineSubsystem subsystem = iter.next();
subsystem.shutdown(config);
}
config.save();
if (currentState != null) {
currentState.dispose();
currentState = null;
}
} finally {
// Even if a graceful shutdown of the subsystems fails,
// the thread pool has to be shut down
stopThreads();
}
}
@Override
public boolean isHibernationAllowed() {
return hibernationAllowed && currentState.isHibernationAllowed();
}
/**
* The main loop runs until the EngineState is set back to INITIALIZED by shutdown() or until the
* OS requests the application's window to be closed. Engine cleanup and disposal occur
* afterwards.
*/
private void mainLoop() {
NetworkSystem networkSystem = CoreRegistry.get(NetworkSystem.class);
DisplayDevice display = CoreRegistry.get(DisplayDevice.class);
PerformanceMonitor.startActivity("Other");
// MAIN GAME LOOP
while (engineState == EngineState.RUNNING && !display.isCloseRequested()) {
long totalDelta;
float updateDelta;
float subsystemsDelta;
// Only process rendering and updating once a second
if (!display.isActive() && isHibernationAllowed()) {
time.setPaused(true);
Iterator<Float> updateCycles = time.tick();
while (updateCycles.hasNext()) {
updateCycles.next();
}
try {
Thread.sleep(100);
} catch (InterruptedException e) {
logger.warn("Display inactivity sleep interrupted", e);
}
display.processMessages();
time.setPaused(false);
continue;
}
processPendingState();
if (currentState == null) {
shutdown();
break;
}
Iterator<Float> updateCycles = time.tick();
try (Activity ignored = PerformanceMonitor.startActivity("Network Update")) {
networkSystem.update();
}
totalDelta = 0;
while (updateCycles.hasNext()) {
updateDelta = updateCycles.next(); // gameTime gets updated here!
totalDelta += time.getDeltaInMs();
try (Activity ignored = PerformanceMonitor.startActivity("Main Update")) {
currentState.update(updateDelta);
}
}
subsystemsDelta = totalDelta / 1000f;
for (EngineSubsystem subsystem : getSubsystems()) {
try (Activity ignored =
PerformanceMonitor.startActivity(subsystem.getClass().getSimpleName())) {
subsystem.preUpdate(currentState, subsystemsDelta);
}
}
// Waiting processes are set by modules via GameThread.a/synch() methods.
GameThread.processWaitingProcesses();
for (EngineSubsystem subsystem : getSubsystems()) {
try (Activity ignored =
PerformanceMonitor.startActivity(subsystem.getClass().getSimpleName())) {
subsystem.postUpdate(currentState, subsystemsDelta);
}
}
PerformanceMonitor.rollCycle();
PerformanceMonitor.startActivity("Other");
}
PerformanceMonitor.endActivity();
// This becomes important only if display.isCloseRequested() is true.
// In all other circumstances the EngineState is already set to
// INITIALIZED by the time the flow gets here.
engineState = EngineState.INITIALIZED;
}