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126 lines
2.5 KiB
126 lines
2.5 KiB
package mightypork.gamecore.resources;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.LinkedBlockingQueue;
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import mightypork.gamecore.core.events.MainLoopRequest;
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import mightypork.utils.Support;
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import mightypork.utils.eventbus.BusAccess;
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import mightypork.utils.interfaces.Destroyable;
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import mightypork.utils.logging.Log;
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/**
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* Asynchronous resource loading thread.
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*
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* @author Ondřej Hruška (MightyPork)
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*/
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public class AsyncResourceLoader extends Thread implements ResourceLoader, Destroyable {
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private final ExecutorService exs = Executors.newFixedThreadPool(2);
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private final LinkedBlockingQueue<LazyResource> toLoad = new LinkedBlockingQueue<>();
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private volatile boolean stopped;
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private BusAccess app;
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private volatile boolean mainLoopQueuing = true;
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@Override
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public synchronized void init(BusAccess app)
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{
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this.app = app;
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app.getEventBus().subscribe(this);
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setDaemon(true);
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super.start();
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}
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public void enableMainLoopQueuing(boolean yes)
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{
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mainLoopQueuing = yes;
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}
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public AsyncResourceLoader() {
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super("Deferred loader");
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}
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@Override
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public void loadResource(final LazyResource resource)
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{
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if (resource.isLoaded()) return;
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// textures & fonts needs to be loaded in main thread
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if (resource.getClass().isAnnotationPresent(TextureBasedResource.class)) {
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if (!mainLoopQueuing) {
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// just let it be
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} else {
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Log.f3("(loader) Delegating to main thread: " + Support.str(resource));
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app.getEventBus().send(new MainLoopRequest(new Runnable() {
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@Override
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public void run()
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{
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resource.load();
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}
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}, false));
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}
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return;
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}
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toLoad.add(resource);
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}
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@Override
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public void run()
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{
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Log.f3("Asynchronous resource loader started.");
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while (!stopped) {
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try {
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final LazyResource def = toLoad.take();
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if (def == null) continue;
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if (!def.isLoaded()) {
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Log.f3("(loader) Scheduling... " + Support.str(def));
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exs.submit(new Runnable() {
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@Override
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public void run()
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{
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if (!def.isLoaded()) {
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def.load();
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}
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}
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});
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}
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} catch (final InterruptedException ignored) {
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//
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}
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}
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}
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// apparently, destroy method exists on thread :/
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@SuppressWarnings("deprecation")
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@Override
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public void destroy()
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{
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Log.f3("Stopping resource loader thread.");
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stopped = true;
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exs.shutdownNow();
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}
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}
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