slugsscreen.java

SUN网站提供的蓝牙示例。客户端和服务器端两部分都有

            } else {
                index = id == 0 ? PLAYER1 : PLAYER2;
            }
        } else {
            switch (tag) {

            case Item.JET_PACK:
                index = JET_PACK;

                break;

            case Item.SHOVEL:
                index = SHOVEL;

                break;

            case Item.BOOSTER:
                index = BOOSTER;

                break;

            case Item.EXTRA_LIFE:
                index = EXTRA_LIFE;

                break;

            case Item.POISON:
                index = POISON;

                break;

            case Item.WALL:
                index = WALL;

                break;

            case Item.HOUSE:
                index = HOUSE;

                break;

            case Item.PATH1:
                index = PATH1;

                break;

            case Item.PATH2:
                index = PATH2;

                break;

            case Item.GRASS:    // fall through

            case Item.DELETE:
                index = GRASS;

                break;

            case Item.JETPACK_COUNT:
                if (y == player_id) {
                    // System.out.println("jetpack count is " + x + " for player " + y);
                    setJetpacks(x);
                } 

                return;

            case Item.SHOVEL_COUNT:
                if (y == player_id) {
                    // System.out.println("shovel count is " + x + " for player " + y);
                    setShovels(x);
                } 

                return;

            case Item.LIFE_COUNT:
                if (y == player_id) {
                    // System.out.println("life count is " + x + " for player " + y);
                    setLives(x);
                } 

                return;

            case Item.NEW_LEVEL:
                level_width = x;
                level_height = y;
                x_offset = (getWidth() - level_width * 5) / 2;
                y_offset = (getHeight() - font_offset - level_height * 5) / 2 
                           + 1;

                buf_g.setColor(grass_green);
                buf_g.fillRect(0, 0, getWidth(), getHeight());

                return;

            default:
                throw new RuntimeException("should not reach here");
            }
        } 

        buf_g.drawImage(img_list[index], x * 5 + x_offset, y * 5 + y_offset, 
                        Graphics.LEFT | Graphics.TOP);
    } 

    /**
     * Repaint this instance
     */
    public void paint(Graphics g) {
        if (showTitle) {
            paintTitle(g);

            showTitle = false;
        } else if (lives <= 0) {
            paintGameOver(g);
        } else {
            paintGame(g);
        } 
    } 

    private void paintGameOver(Graphics g) {
        g.setFont(font);
        g.setColor(grass_green);
        g.fillRect(0, 0, getWidth(), getHeight());
        g.setColor(white);
        g.drawString("G A M E  O V E R", getWidth() / 2, getHeight() / 2, 
                     Graphics.HCENTER | Graphics.TOP);
    } 

    private void paintTitle(Graphics g) {
        String string;
        int v_offset = 3;
        int h_offset = 8;
        int img_v_off = font_offset / 3;
        int img_h_off = 8;
        int anchor = Graphics.LEFT | Graphics.TOP;

        g.setFont(font);
        g.setColor(grass_green);
        g.fillRect(0, 0, getWidth(), getHeight());
        g.setColor(white);
        g.drawString("-- S L U G S --", getWidth() / 2, v_offset, 
                     Graphics.HCENTER | Graphics.TOP);

        v_offset += font_offset;
        string = "Find home: ";

        g.drawString(string, h_offset, v_offset, anchor);
        g.drawImage(img_list[HOUSE], h_offset + font.stringWidth(string), 
                    img_v_off + v_offset, anchor);

        v_offset += font_offset;

        g.drawString("Avoid opponent, and", h_offset, v_offset, anchor);

        v_offset += font_offset * 3 / 4;
        string = "these:            (unless";

        g.drawString(string, h_offset, v_offset, anchor);
        g.drawImage(img_list[WALL], 
                    h_offset + font.substringWidth(string, 0, 7) 
                    + 0 * img_h_off, img_v_off + v_offset, anchor);
        g.drawImage(img_list[POISON], 
                    h_offset + font.substringWidth(string, 0, 7) 
                    + 1 * img_h_off, img_v_off + v_offset, anchor);
        g.drawImage(img_list[PATH1], 
                    h_offset + font.substringWidth(string, 0, 7) 
                    + 2 * img_h_off, img_v_off + v_offset, anchor);
        g.drawImage(img_list[PATH2], 
                    h_offset + font.substringWidth(string, 0, 7) 
                    + 3 * img_h_off, img_v_off + v_offset, anchor);

        v_offset += font_offset * 3 / 4;

        g.drawString("flying or digging)", h_offset, v_offset, anchor);

        v_offset += font_offset;
        string = "Fly:    + '1'";

        g.drawString(string, h_offset, v_offset, anchor);
        g.drawImage(img_list[JET_PACK], 
                    h_offset + font.substringWidth(string, 0, 5), 
                    img_v_off + v_offset, anchor);

        v_offset += font_offset;
        string = "Dig:    + '3'";

        g.drawString(string, h_offset, v_offset, anchor);
        g.drawImage(img_list[SHOVEL], 
                    h_offset + font.substringWidth(string, 0, 5), 
                    img_v_off + v_offset, anchor);

        v_offset += font_offset;
        string = "Extra life: ";

        g.drawString(string, h_offset, v_offset, anchor);
        g.drawImage(img_list[EXTRA_LIFE], 
                    h_offset + font.stringWidth(string), 
                    img_v_off + v_offset, anchor);

        v_offset += font_offset;
        string = "Boost speed: ";

        g.drawString(string, h_offset, v_offset, anchor);
        g.drawImage(img_list[BOOSTER], h_offset + font.stringWidth(string), 
                    img_v_off + v_offset, anchor);
    } 

    private void paintGame(Graphics g) {
        long n;
        int i;
        int h_offset = 5;
        int v_offset = 4;
        int img_h_off = 7;
        int img_v_off = 3;
        int anchor = Graphics.LEFT | Graphics.TOP;

        g.setFont(font);
        g.drawImage(buf, 0, 0, anchor);

        fps++;
        n = System.currentTimeMillis() / 1000;

        if (n != last) {
            fps_string = "fps: " + fps;
            fps = 0;
            last = n;
        } 

        g.setColor(white);
        g.drawString(fps_string, h_offset, v_offset, anchor);
        // level boundary
        g.drawRect(x_offset, y_offset, level_width * 5, level_height * 5);

        v_offset = getHeight() - font_offset;

        g.drawImage(img_list[EXTRA_LIFE], h_offset, v_offset + img_v_off, 
                    anchor);
        g.drawString(life_string, h_offset + img_h_off, v_offset, anchor);

        h_offset += 20;

        g.drawImage(img_list[SHOVEL], h_offset, v_offset + img_v_off, anchor);
        g.drawString(shovel_string, h_offset + img_h_off, v_offset, anchor);

        h_offset += 20;

        g.drawImage(img_list[JET_PACK], h_offset, v_offset + img_v_off, 
                    anchor);
        g.drawString(jetpack_string, h_offset + img_h_off, v_offset, anchor);

        h_offset += 20;

        g.drawString(score_string, h_offset, v_offset, anchor);
    } 

}