gamemenu.java

利用j2me所开发的一个角色扮演类游戏

import java.io.IOException;
import java.io.InputStream;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Font;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.game.GameCanvas;
import javax.microedition.media.Manager;
import javax.microedition.media.MediaException;
import javax.microedition.media.Player;

public class GameMenu extends GameCanvas implements Runnable, CommandListener {
	// 与菜单有关的变量

	private int menuWidth = 80;
	private int menuHeight = 15;
	private int menuStartY = 50;
	private int screenM = this.getWidth() / 2;
	private int tempi = 0;
	private int currentMenuItemY = menuStartY;
	private boolean isFlash = false;
	private int menuSelect = 0; // 0显示主菜单 1显示高分榜 2显示选项菜单 3显示游戏规则说明 4显示游戏背景
	// 5显示游戏版权信息
	private String menuStr[] = { "开始游戏", "高分榜", "选项", "游戏规则说明", "游戏背景", "查看版权",
			"退出" };
	private Player bgMusicPlayer;// 游戏背景音乐
	private Player moveMenuPlayer;// 移动菜单的声音
	private boolean isShowMenu = true;
	GameMain gameMain;
	private int screenW; // 手机屏幕宽度
	protected int screenH; // 手机屏幕高度
	// 与存档有关的
	static Score score;
	static final String scoreRMSName = "EliminatorScore";
	static Settings settings;
	static final String settingsRMSName = "EliminatorSettings";
	private static GameCenter gameCenter;
	private Command com_Ok;
	private Command com_Exit;
	private String menuSetting[][] = { { "音乐关", "返回" }, { "音乐开", "返回" } };
	private int menuSettingI = 1;

	protected GameMenu(GameMain game, int menuSelect) {
		super(true);
		this.gameMain = game;
		this.menuSelect = menuSelect;
		screenW = this.getWidth();
		screenH = this.getHeight();
		score = new Score(scoreRMSName);
		settings = new Settings(settingsRMSName);
		try {
			this.score.loadScores();
			this.settings.loadSettings();
			gameMain.gameSound = this.settings.sound;
		} catch (Exception e) {

			e.printStackTrace();
		}

		// 初始化音乐对象
		InputStream is = getClass().getResourceAsStream("bgmusic.mid");
		try {
			bgMusicPlayer = Manager.createPlayer(is, "audio/midi");
			bgMusicPlayer.prefetch();
			bgMusicPlayer.setLoopCount(-1);
			bgMusicPlayer.setMediaTime(0);
			if (gameMain.gameSound == 1) {
				bgMusicPlayer.start();
			}

		} catch (IOException e1) {
			e1.printStackTrace();
		} catch (MediaException e1) {
			e1.printStackTrace();
		}

		is = getClass().getResourceAsStream("movemenu.wav");
		try {
			moveMenuPlayer = Manager.createPlayer(is, "audio/X-wav");
			moveMenuPlayer.prefetch();
		} catch (IOException e1) {
			e1.printStackTrace();
		} catch (MediaException e1) {
			e1.printStackTrace();
		}
		if (menuSelect == 1) {
			com_Ok = new Command("返回", Command.OK, 0);
			com_Exit = new Command("清空记录", Command.EXIT, 0);
			this.addCommand(com_Ok);
			this.addCommand(com_Exit);
			this.setCommandListener(this);
		}
		Thread t = new Thread(this);
		t.start();
	}

	public void setMenuSelect(int menuSelect) {
		this.menuSelect = menuSelect;
		if (menuSelect == 1) {
			com_Ok = new Command("返回", Command.OK, 0);
			com_Exit = new Command("清空记录", Command.EXIT, 0);
			this.addCommand(com_Ok);
			this.addCommand(com_Exit);
			this.setCommandListener(this);
		}
		System.out.println("23423432");
		if (gameMain.gameSound == 1) {
			try {
				bgMusicPlayer.start();
			} catch (MediaException e) {			
				e.printStackTrace();
			}
		}
		System.out.println("232211111132");
		isShowMenu = true;
		Thread t = new Thread(this);
		t.start();
	}

	private void drawFlashRound(Graphics g, int width, int height, int menuY,
			String str, boolean isFlash) {

		g.setColor(19, 14, 243);
		if (isFlash) {
			g.setColor(197, 220, 252);
		}
		g.fillRoundRect(this.getWidth() / 2 - width / 2, menuY, width, height,
				height, height);
		switch (tempi) {
		case 1:
			g.setColor(197, 220, 252);
			break;
		case 2:
			g.setColor(139, 139, 255);
			break;
		case 3:
			g.setColor(10, 10, 188);
			break;
		case 4:
			g.setColor(2, 2, 32);
			break;
		}
		g.drawRoundRect(this.getWidth() / 2 - width / 2, menuY, width, height,
				height, height);
		g.setColor(197, 220, 252);
		g.drawString(str, this.getWidth() / 2 - 12 * str.length() / 2,
				menuY + 2, 0);
	}

	private void drawNotFlashRound(Graphics g, int width, int height,
			int menuY, String str) {
		g.setColor(19, 14, 243);
		g.fillRoundRect(this.getWidth() / 2 - width / 2, menuY, width, height,
				height, height);
		g.setColor(197, 220, 252);
		g.drawString(str, this.getWidth() / 2 - 12 * str.length() / 2,
				menuY + 2, 0);
	}

	private void showMenu(Graphics g) {
		// 显示菜单

		g.setColor(0, 0, 0);
		g.fillRect(0, 0, screenW, screenH);
		g.setColor(255, 255, 255);
		g.drawImage(GameCenter.createImage("/menu.png"), 0, 0, 0);
		Font font;
		font = Font.getFont(Font.FACE_MONOSPACE, Font.STYLE_PLAIN,
				Font.SIZE_MEDIUM);
		g.setFont(font);
		int tempWidth = 120;
		int tempHeight = 18;
		int currentMenuY = menuStartY;
		int tempj = 0;
		while (menuStr.length - 1 >= tempj) {
			if (currentMenuItemY == currentMenuY) {
				drawFlashRound(g, tempWidth, tempHeight, currentMenuY,
						menuStr[tempj], isFlash);
				isFlash = false;
			} else {
				drawNotFlashRound(g, tempWidth, tempHeight, currentMenuY,
						menuStr[tempj]);
			}
			currentMenuY += 24;
			tempj++;
		}

		this.flushGraphics();

	}

	private void keyControl() throws MediaException {
		// 处理用户按键输入
		int keyCode = this.getKeyStates();
		if ((keyCode & this.UP_PRESSED) != 0) {
			try {
				if (gameMain.gameSound == 1) {
					moveMenuPlayer.start();
				}
			} catch (MediaException e) {
				e.printStackTrace();
			}
			isFlash = true;
			if (currentMenuItemY <= menuStartY) {
				currentMenuItemY = menuStartY + 24 * (menuStr.length - 1);
			} else {
				currentMenuItemY = currentMenuItemY - 24;
			}
		} else if ((keyCode & this.DOWN_PRESSED) != 0) {
			isFlash = true;
			try {
				if (gameMain.gameSound == 1) {
					moveMenuPlayer.start();
				}
			} catch (MediaException e) {
				e.printStackTrace();
			}
			if (currentMenuItemY >= menuStartY + 24 * (menuStr.length - 1)) {
				currentMenuItemY = menuStartY;
			} else {
				currentMenuItemY = currentMenuItemY + 24;
			}
		} else if ((keyCode & this.FIRE_PRESSED) != 0) {
			if (currentMenuItemY == menuStartY) {
				if (menuSelect == 0) {
					isShowMenu = false;
					bgMusicPlayer.stop();
					if (this.gameCenter == null) {
						gameCenter = new GameCenter(gameMain, score, settings);
					}
					gameCenter.newGame(1);
					gameMain.display.setCurrent(gameCenter);

				} else if (menuSelect == 2) {// 如果显示的是选项菜单
					if (menuSettingI == 0) {
						try {
							settings.updateSettings(1, 1, 1, 1);
						} catch (Exception e) {

							e.printStackTrace();
						}
						gameMain.gameSound = this.settings.sound;
						if (gameMain.gameSound == 1) {
							bgMusicPlayer.start();
						}
					} else {
						try {
							settings.updateSettings(1, 0, 1, 1);
						} catch (Exception e) {

							e.printStackTrace();
						}
						gameMain.gameSound = this.settings.sound;
						if (gameMain.gameSound == 0) {
							bgMusicPlayer.stop();