Scale and rotate the cursor.

- Cursor is now scaled based on window size.
- Cursor now rotates slowly (new style only).
- Cursor now expands upon mouse press.

Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>

src/itdelatrisu/opsu/states/Game.java

@@ -407,6 +407,8 @@ public class Game extends BasicGameState {
 	@Override
 	public void update(GameContainer container, StateBasedGame game, int delta)
 			throws SlickException {
+		Utils.updateCursor(delta);
+
 		if (isLeadIn()) {  // stop updating during song lead-in
 			leadInTime -= delta;
 			if (!isLeadIn())

src/itdelatrisu/opsu/states/GamePauseMenu.java

@@ -97,7 +97,7 @@ public class GamePauseMenu extends BasicGameState {
 	@Override
 	public void update(GameContainer container, StateBasedGame game, int delta)
 			throws SlickException {
-		// empty
+		Utils.updateCursor(delta);
 	}
 
 	@Override

src/itdelatrisu/opsu/states/GameRanking.java

@@ -136,7 +136,7 @@ public class GameRanking extends BasicGameState {
 	@Override
 	public void update(GameContainer container, StateBasedGame game, int delta)
 			throws SlickException {
-		// empty
+		Utils.updateCursor(delta);
 	}
 
 	@Override

src/itdelatrisu/opsu/states/MainMenu.java

@@ -223,6 +223,8 @@ public class MainMenu extends BasicGameState {
 	@Override
 	public void update(GameContainer container, StateBasedGame game, int delta)
 			throws SlickException {
+		Utils.updateCursor(delta);
+
 		// fade in background
 		if (bgAlpha < 0.9f) {
 			bgAlpha += delta / 1000f;

src/itdelatrisu/opsu/states/MainMenuExit.java

@@ -51,6 +51,7 @@ public class MainMenuExit extends BasicGameState {
 	 */
 	private float centerOffset;
 
+	// game-related variables
 	private GameContainer container;
 	private StateBasedGame game;
 	private int state;
@@ -113,6 +114,8 @@ public class MainMenuExit extends BasicGameState {
 	@Override
 	public void update(GameContainer container, StateBasedGame game, int delta)
 			throws SlickException {
+		Utils.updateCursor(delta);
+
 		// move buttons to center
 		float yesX = yesButton.getX(), noX = noButton.getX();
 		float center = container.getWidth() / 2f;

src/itdelatrisu/opsu/states/Options.java

@@ -496,7 +496,7 @@ public class Options extends BasicGameState {
 	@Override
 	public void update(GameContainer container, StateBasedGame game, int delta)
 			throws SlickException {
-		// empty
+		Utils.updateCursor(delta);
 	}
 
 	@Override

src/itdelatrisu/opsu/states/SongMenu.java

@@ -275,6 +275,8 @@ public class SongMenu extends BasicGameState {
 	@Override
 	public void update(GameContainer container, StateBasedGame game, int delta)
 			throws SlickException {
+		Utils.updateCursor(delta);
+
 		// search
 		searchTimer += delta;
 		if (searchTimer >= SEARCH_DELAY) {