handle input at higher rate than render rate

src/yugecin/opsudance/core/state/OpsuState.java

@@ -22,6 +22,7 @@ import org.newdawn.slick.Graphics;
 public interface OpsuState {
 
 	void update(int delta);
+	void preRenderUpdate(int delta);
 	void render(Graphics g);
 	void enter();
 	void leave();

src/yugecin/opsudance/core/state/transitions/TransitionState.java

@@ -45,6 +45,10 @@ public abstract class TransitionState extends BaseOpsuState {
 		}
 	}
 
+	@Override
+	public void preRenderUpdate(int delta) {
+	}
+
 	@Override
 	public void render(Graphics g) {
 		applicableState.render(g);