Initial commit.

src/itdelatrisu/opsu/states/GamePauseMenu.java

@@ -0,0 +1,195 @@
+/*
+ * opsu! - an open-source osu! client
+ * Copyright (C) 2014 Jeffrey Han
+ *
+ * opsu! is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * opsu! is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with opsu!.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package itdelatrisu.opsu.states;
+
+import itdelatrisu.opsu.GUIMenuButton;
+import itdelatrisu.opsu.MusicController;
+import itdelatrisu.opsu.Opsu;
+
+import org.newdawn.slick.Color;
+import org.newdawn.slick.GameContainer;
+import org.newdawn.slick.Graphics;
+import org.newdawn.slick.Image;
+import org.newdawn.slick.Input;
+import org.newdawn.slick.SlickException;
+import org.newdawn.slick.state.BasicGameState;
+import org.newdawn.slick.state.StateBasedGame;
+import org.newdawn.slick.state.transition.FadeInTransition;
+import org.newdawn.slick.state.transition.FadeOutTransition;
+
+/**
+ * "Game Paused" state.
+ * <ul>
+ * <li>[Continue] - unpause game (return to game state)
+ * <li>[Retry]    - restart game (return to game state)
+ * <li>[Back]     - return to song menu state
+ * </ul>
+ */
+public class GamePauseMenu extends BasicGameState {
+	/**
+	 * Music fade-out time, in milliseconds.
+	 */
+	private static final int FADEOUT_TIME = 1000;
+
+	/**
+	 * Track position when the pause menu was loaded (for FADEOUT_TIME).
+	 */
+	private long pauseStartTime;
+
+	/**
+	 * "Continue", "Retry", and "Back" buttons.
+	 */
+	private GUIMenuButton continueButton, retryButton, backButton;
+
+	/**
+	 * Background image for pause menu (optional).
+	 */
+	private Image backgroundImage;
+
+	/**
+	 * Background image for fail menu (optional).
+	 */
+	private Image failImage;
+
+	// game-related variables
+	private StateBasedGame game;
+	private int state;
+
+	public GamePauseMenu(int state) {
+		this.state = state;
+	}
+
+	@Override
+	public void init(GameContainer container, StateBasedGame game)
+			throws SlickException {
+		this.game = game;
+
+		int width = container.getWidth();
+		int height = container.getHeight();
+
+		// initialize buttons
+		continueButton = new GUIMenuButton(new Image("pause-continue.png"), width / 2f, height * 0.25f);
+		retryButton = new GUIMenuButton(new Image("pause-retry.png"), width / 2f, height * 0.5f);
+		backButton = new GUIMenuButton(new Image("pause-back.png"), width / 2f, height * 0.75f);
+
+		// pause background image
+		try {
+			backgroundImage = new Image("pause-overlay.png").getScaledCopy(width, height);
+			backgroundImage.setAlpha(0.7f);
+		} catch (Exception e) {
+			// optional
+		}
+
+		// fail image
+		try {
+			failImage = new Image("fail-background.png").getScaledCopy(width, height);
+			failImage.setAlpha(0.7f);
+		} catch (Exception e) {
+			// optional
+		}
+	}
+
+	@Override
+	public void render(GameContainer container, StateBasedGame game, Graphics g)
+			throws SlickException {
+		// background
+		if (backgroundImage != null && Game.getRestart() != Game.RESTART_LOSE)
+			backgroundImage.draw();
+		else if (failImage != null && Game.getRestart() == Game.RESTART_LOSE)
+			failImage.draw();
+		else
+			g.setBackground(Color.black);
+
+		Options.drawFPS();
+
+		// draw buttons
+		if (Game.getRestart() != Game.RESTART_LOSE)
+			continueButton.draw();
+		retryButton.draw();
+		backButton.draw();
+	}
+
+	@Override
+	public void update(GameContainer container, StateBasedGame game, int delta)
+			throws SlickException {
+		// empty
+	}
+
+	@Override
+	public int getID() { return state; }
+
+	@Override
+	public void keyPressed(int key, char c) {
+		switch (key) {
+		case Input.KEY_ESCAPE:
+			// 'esc' will normally unpause, but will return to song menu if health is zero
+			if (Game.getRestart() == Game.RESTART_LOSE) {
+				MusicController.stop();
+				MusicController.playAt(Game.getOsuFile().previewTime, true);
+				game.enterState(Opsu.STATE_SONGMENU, new FadeOutTransition(Color.black), new FadeInTransition(Color.black));
+			} else
+				unPause(Game.RESTART_FALSE);
+			break;
+		case Input.KEY_F12:
+			Options.takeScreenShot();
+			break;
+		}
+	}
+
+	@Override
+	public void mousePressed(int button, int x, int y) {
+		// check mouse button 
+		if (button != Input.MOUSE_LEFT_BUTTON)
+			return;
+
+		boolean loseState = (Game.getRestart() == Game.RESTART_LOSE);
+
+		// if music faded out (i.e. health is zero), don't process any actions before FADEOUT_TIME
+		if (loseState && System.currentTimeMillis() - pauseStartTime < FADEOUT_TIME)
+			return;
+
+		if (continueButton.contains(x, y) && !loseState)
+			unPause(Game.RESTART_FALSE);
+		else if (retryButton.contains(x, y)) {
+			unPause(Game.RESTART_MANUAL);
+		} else if (backButton.contains(x, y)) {
+			MusicController.pause();  // lose state
+			MusicController.playAt(Game.getOsuFile().previewTime, true);
+			game.enterState(Opsu.STATE_SONGMENU, new FadeOutTransition(Color.black), new FadeInTransition(Color.black));
+		}
+	}
+
+	@Override
+	public void enter(GameContainer container, StateBasedGame game)
+			throws SlickException {
+		pauseStartTime = System.currentTimeMillis();
+		if (Game.getRestart() == Game.RESTART_LOSE)
+			MusicController.fadeOut(FADEOUT_TIME);
+		else
+			MusicController.pause();
+	}
+
+	/**
+	 * Unpause and return to the Game state.
+	 */
+	private void unPause(byte restart) {
+		Game.setRestart(restart);
+		game.enterState(Opsu.STATE_GAME);
+	}
+}