Include vsync options

Co-authored-by: r3cp3ct <45179536+r3cp3ct@users.noreply.github.com>
Co-authored-by: sigonasr2 <sigonasr2@gmail.com>

src/sig/RabiClone.java

@@ -8,6 +8,8 @@ import net.java.games.input.ControllerEnvironment;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.awt.image.BufferStrategy;
+import java.awt.BufferCapabilities;
 
 import sig.engine.Panel;
 import sig.engine.Point;
@@ -23,7 +25,7 @@ import sig.engine.PaletteColor;
 
 import java.awt.Toolkit;
 import java.awt.event.KeyEvent;
-import java.io.PrintStream;
+import java.lang.reflect.Constructor;
 
 public class RabiClone {
 	public static final String PROGRAM_NAME = "RabiClone";
@@ -84,7 +86,29 @@ public class RabiClone {
 				(int) ((Toolkit.getDefaultToolkit().getScreenSize().getHeight() - f.getHeight()) / 2));
 		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 		f.setVisible(true);
-		f.createBufferStrategy(2);
+		BufferStrategy bf = f.getBufferStrategy();
+		if (bf != null) {
+			BufferCapabilities caps = bf.getCapabilities();
+			try {
+				Class ebcClass = Class.forName(
+					"sun.java2d.pipe.hw.ExtendedBufferCapabilities");
+				Class vstClass = Class.forName(
+					"sun.java2d.pipe.hw.ExtendedBufferCapabilities$VSyncType");
+	
+				Constructor ebcConstructor = ebcClass.getConstructor(
+					new Class[] { BufferCapabilities.class, vstClass });
+				java.lang.Object vSyncType = vstClass.getField("VSYNC_ON").get(null);
+	
+				BufferCapabilities newCaps = (BufferCapabilities)ebcConstructor.newInstance(
+					new java.lang.Object[] { caps, vSyncType });
+	
+				f.createBufferStrategy(2, newCaps);
+			}
+			catch (Throwable t) {
+				// Ignore
+				t.printStackTrace();
+			}
+		}
 
 		OBJ.add(level_renderer = new LevelRenderer(p));
 		StartGame();

src/sig/engine/Panel.java

@@ -375,6 +375,7 @@ public class Panel extends JPanel implements Runnable,KeyListener {
 						}
 					} while (RabiClone.f.getBufferStrategy().contentsRestored());
 					RabiClone.f.getBufferStrategy().show();
+					Toolkit.getDefaultToolkit().sync();
 				} while (RabiClone.f.getBufferStrategy().contentsLost());
 			}
 			updateFPSCounter();