/** Starts the game loop after the application internals have been initialized. */
protected void start() {
listener.create();
listener.resize(graphics.getWidth(), graphics.getHeight());
if (runOnEDT) {
new Runnable() {
public void run() {
frame();
if (running) EventQueue.invokeLater(this);
else end();
}
}.run();
} else {
while (running) frame();
end();
}
}
/** Handles posted runnables, input, and rendering for each frame. */
protected void frame() {
if (!running) return;
synchronized (runnables) {
executedRunnables.clear();
executedRunnables.addAll(runnables);
runnables.clear();
}
if (executedRunnables.size > 0) {
for (int i = 0; i < executedRunnables.size; i++) executedRunnables.get(i).run();
if (!running) return;
graphics.requestRendering();
}
input.update();
long frameStartTime = System.nanoTime();
int targetFPS =
(graphics.isHidden() || graphics.isMinimized())
? hiddenFPS
: //
(graphics.isForeground() ? foregroundFPS : backgroundFPS);
if (targetFPS == -1) { // Rendering is paused.
if (!isPaused) listener.pause();
isPaused = true;
} else {
if (isPaused) listener.resume();
isPaused = false;
if (graphics.shouldRender()) render(frameStartTime);
}
if (targetFPS != 0)
sleep(
targetFPS == -1
? 100
: (int) (1000f / targetFPS - (System.nanoTime() - frameStartTime) / 1000000f));
}
public void postRunnable(Runnable runnable) {
synchronized (runnables) {
runnables.add(runnable);
graphics.requestRendering();
}
}
void render(long time) {
graphics.frameStart(time);
listener.render();
glfwSwapBuffers(graphics.window);
}