Step by Step，用JAVA做一個FLAPPYBIRD遊戲（六）

這一篇來實現結束界面。
還是先上代碼。

public class overMenu {

    private final Image IMG_OVER = new ImageIcon("images/gameover.png").getImage();
    private final Image IMG_OVER_BACK = new ImageIcon("images/bg.png").getImage();
    private final Image IMG_REPLAY_BTN = new ImageIcon("images/replay.png").getImage();
    public boolean isReplay=false;
    public int btnX,btnY,btnW,btnH;
    private final Image IMG_SCORE_BORAD = new ImageIcon("images/scoreboard.png").getImage();
    private final Image IMG_MEDAL0 = new ImageIcon("images/medal0.png").getImage();
    private final Image IMG_MEDAL1 = new ImageIcon("images/medal1.png").getImage();
    private final Image IMG_MEDAL2 = new ImageIcon("images/medal2.png").getImage();
    public boolean isPlayed=false;

    public overMenu() {
        this.btnX = MyGame.gameW/2-IMG_REPLAY_BTN.getWidth(null)/2;
        this.btnY = MyGame.gameH/2-IMG_OVER.getHeight(null)+160;
        this.btnW = IMG_REPLAY_BTN.getWidth(null);
        this.btnH = IMG_REPLAY_BTN.getHeight(null);
    }



    public void draw(Graphics g,int score) {
        g.drawImage(IMG_OVER_BACK, 0, 0, null);
        g.drawImage(IMG_OVER, MyGame.gameW/2-IMG_OVER.getWidth(null)/2, MyGame.gameH/2-IMG_OVER.getHeight(null)-140, null);
        g.drawImage(IMG_SCORE_BORAD, MyGame.gameW/2-IMG_OVER.getWidth(null)/2-20, MyGame.gameH/2-IMG_OVER.getHeight(null)-40, null);
        g.drawImage(IMG_REPLAY_BTN, MyGame.gameW/2-IMG_REPLAY_BTN.getWidth(null)/2, MyGame.gameH/2-IMG_OVER.getHeight(null)+160, null);
        String sscore="";
         if(score<10) {
                    sscore = "0"+String.valueOf(score);
         } else {
                    sscore = String.valueOf(score);
         }
       g.drawString(sscore, 274,214);
       if(score<10) {
           g.drawImage(IMG_MEDAL2,80,200, null);
       } else if(score<20) {
           g.drawImage(IMG_MEDAL1,80,200, null);
       } else {
           g.drawImage(IMG_MEDAL2,80,200, null);
       }
    }

    public void playDead() {
         try {
              FileInputStream fis = new FileInputStream(new File("sound/die.wav"));
              AudioPlayer.player.start(fis);
        } catch (Exception ex) {
           ex.printStackTrace();
        }
         isPlayed = true;
    }

} 

IMG_OVER ，IMG_OVER_BACK ，IMG_REPLAY_BTN 分別是game over文字，遊戲結束背景，重玩按鈕的圖片。IMG_SCORE_BORAD 是分數牌的圖片。IMG_MEDAL0，IMG_MEDAL1，IMG_MEDAL2是金銀銅牌圖片。
draw方法繪製這些圖片到合適的位置，其中需要傳入參數score就是小鳥的得分，這在之前主循環的代碼裏面我們有統計（通過小鳥穿過的水管數來統計）。當score<10，就在前面補畫個0。獎牌的邏輯就簡單設置爲小於10顯示銅牌，10-20銀牌，大於20金牌。

playdead方法播放小鳥死亡音效。再看主循環的代碼有一句：

case GAME_STATE_OVER:
                int x = e.getX();
                int y = e.getY();
                    if(x>=om.btnX && x<=om.btnX+om.btnW && y>=om.btnY && y<=om.btnY+om.btnH) {
                    th.stop();
                    gameFrame.dispose();
                    this.doInit();
                }
                break;

這段代碼在mousemPressed方法內，當處於gameOver狀態，每次按下鼠標，都會判斷點擊區域是否在重玩按鈕的範圍內，如果在的話就執行doInit重新開始遊戲。