refactor(renderer): introduce skipDisplayFrame logic in RendererData and update G2DRenderer rendering cycle

src/main/java/de/extio/game_engine/renderer/RendererData.java

@@ -1,5 +1,6 @@
 package de.extio.game_engine.renderer;
 
+import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicLong;
 
 import org.springframework.context.ApplicationContext;
@@ -31,6 +32,8 @@ public class RendererData {
 	
 	private final AtomicLong frame = new AtomicLong();
 
+	private final AtomicBoolean skipDisplayFrame = new AtomicBoolean(false);
+
 	private final KeycodeRegistry keycodeRegistry;
 
 	private final EventService eventService;
@@ -88,6 +91,14 @@ public class RendererData {
 		return this.frame.incrementAndGet();
 	}
 
+	public boolean isSkipDisplayFrame() {
+		return this.skipDisplayFrame.get();
+	}
+
+	public boolean setSkipDisplayFrame(final boolean skipDisplayFrame) {
+		return this.skipDisplayFrame.getAndSet(skipDisplayFrame);
+	}
+	
 	public Renderer getRenderer() {
 		return this.renderer;
 	}

src/main/java/de/extio/game_engine/renderer/g2d/G2DRenderer.java

@@ -225,7 +225,10 @@ public class G2DRenderer implements Renderer {
 					// Rendering cycle START
 					//
 					
+					final var skipDisplay = this.rendererData.setSkipDisplayFrame(false);
+					if (! skipDisplay) {
 						bufferStrategy.show();
+					}
 					Toolkit.getDefaultToolkit().sync();
 				}
 				finally {