gamepage.java~4~

J2ME游戏引擎,直接在JBUILDER2006下运行,不包含需要的SDK和虚拟机

package GoGoGo;

import java.io.*;
import javax.microedition.rms.*;
import java.util.Vector;
/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0.0
 */

public class GamePage extends GameFrameBase
{
    //=在游戏中需要用到的一些常量=====
    final static byte SMALL_BLOCK_SIZE = 16;
    final static byte START_POS_X = 4;
    final static byte START_POS_Y = 1;
    final static byte OPTION_TOTAL = 3;
    //========================END=

    //=Frame状态定义===============
    final static byte PAGES_MAIN_MENU = 0;
    final static byte PAGES_OPTIONS = 1;
    final static byte PAGES_GAMING_OPTIONS = 2;
    final static byte PAGES_HELP1 = 3;
    final static byte PAGES_HELP2 = 4;
    //========================END=

    //=MENU ITEMS=================
    final static byte MENU_PLAY = 0;
    final static byte MENU_OPTION = 1;
    final static byte MENU_HELP = 2;
    final static byte MENU_EXIT = 3;
    //========================END=

    //=定义的一些中间变量============
    private byte m_i_MenuItemIdx;
    private byte m_i_OptionItemIdx;
    private byte m_i_GameOption[];
    //private byte m_i_GameState;
    //========================END=

    //=本Frame中使用的图片==========
    private Surface m_Surface_MenuMain = null;
    private Surface m_Surface_MenuOptions = null;
    private Surface m_Surface_MenuHelp1 = null;
    private Surface m_Surface_MenuHelp2 = null;
    private Surface m_Surface_MenuOnOff = null;
    private Surface m_Surface_MenuContinue = null;
    private Surface m_Surface_TitleMain = null;
    private Surface m_Surface_SmallRoad = null;
    //========================END=

    public GamePage()
    {
        m_vect_SurfacePath = new Vector();
        m_vect_SurfacePath.addElement("/menu_main.png");
        m_vect_SurfacePath.addElement("/menu_options.png");
        m_vect_SurfacePath.addElement("/menu_help1.png");
        m_vect_SurfacePath.addElement("/menu_help2.png");
        m_vect_SurfacePath.addElement("/menu_onoff.png");
        m_vect_SurfacePath.addElement("/menu_continue.png");
        m_vect_SurfacePath.addElement("/title_main.png");
        m_vect_SurfacePath.addElement("/smallroad.png");

        m_i_GameOption = new byte[OPTION_TOTAL];
        ReadOptionsRecords();
    }

    public void Create(GameViewBase view)
    {
        m_View = view;
        m_BackGraphy = m_View.m_g_BackGraphy;

        m_i_HalfScreenWidth = m_View.m_i_ScreenWidth / 2;
        m_i_HalfScreenHeight = m_View.m_i_ScreenHeight / 2;

        //注意调用的顺序要和m_vect_SurfacePath中图像路径的顺序一致
        m_Surface_MenuMain = m_View.nextSurface();
        m_Surface_MenuOptions = m_View.nextSurface();
        m_Surface_MenuHelp1 = m_View.nextSurface();
        m_Surface_MenuHelp2 = m_View.nextSurface();
        m_Surface_MenuOnOff = m_View.nextSurface();
        m_Surface_MenuContinue = m_View.nextSurface();
        m_Surface_TitleMain = m_View.nextSurface();
        m_Surface_SmallRoad = m_View.nextSurface();
    }

    public void Release()
    {
        WriteOptionsRecord();
        if(m_View != null)
            m_View.ReleaseAllSurfaces();
    }

    public void OnKeyDown(int iScanCode)
    {
        switch (m_i_FrameState)
        {
            case PAGES_MAIN_MENU:
                MainMenu_Onkey(iScanCode);
                break;
            case PAGES_OPTIONS:
            case PAGES_GAMING_OPTIONS:
                Options_Onkey(iScanCode);
                break;
            case PAGES_HELP1:
                m_i_FrameState = PAGES_HELP2;
                break;
            case PAGES_HELP2:
                m_i_FrameState = PAGES_MAIN_MENU;
                break;
        }
    }

    public void OnKeyUp(int iScanCode)
    {

    }

    private void Options_Onkey(int iScanCode)
    {
        switch (iScanCode)
        {
            case GameViewBase.KEY_SOFTKEY1:
                switch (m_i_OptionItemIdx)
                {
                    case 0:
                        m_i_GameOption[0] = (byte) (1 - m_i_GameOption[0]);
                        break;
                    case 1:
                        m_i_GameOption[1] = (byte) (1 - m_i_GameOption[1]);
                        break;
                    case 2:
                        m_i_GameOption[2] = (byte) (1 - m_i_GameOption[2]);
                        break;
                    case 4:
                        m_i_FrameState = PAGES_MAIN_MENU;
                        break;
                }
                break;
            case GameViewBase.KEY_UP:
                if (m_i_OptionItemIdx == 0)
                    m_i_OptionItemIdx = 4;
                else
                    m_i_OptionItemIdx--;
                if ( (m_i_OptionItemIdx == 3)
                     && (m_i_FrameState != PAGES_GAMING_OPTIONS)
                     )
                    m_i_OptionItemIdx--;
                break;
            case GameViewBase.KEY_DOWN:
                if (m_i_OptionItemIdx == 4)
                    m_i_OptionItemIdx = 0;
                else
                    m_i_OptionItemIdx++;
                if ( (m_i_OptionItemIdx == 3)
                     && (m_i_FrameState != PAGES_GAMING_OPTIONS)
                    )
                    m_i_OptionItemIdx++;
                break;
        }
    }

    private void MainMenu_Onkey(int iScanCode)
    {
        switch (iScanCode)
        {
            case GameViewBase.KEY_SOFTKEY1:
                switch (m_i_MenuItemIdx)
                {
                    case 0:
                        GotoGame();
                        break;
                    case 1:
                        m_i_FrameState = PAGES_OPTIONS;
                        break;
                    case 2:
                        m_i_FrameState = PAGES_HELP1;
                        break;
                    case 3:
                        m_i_FrameTimer = -1;
                        //m_View.m_App.notifyDestroyed();
                        break;
                }
                break;
            case GameViewBase.KEY_UP:
                if (m_i_MenuItemIdx == 0)
                    m_i_MenuItemIdx = 3;
                else
                    m_i_MenuItemIdx--;
                break;
            case GameViewBase.KEY_DOWN:
                if (m_i_MenuItemIdx == 3)
                    m_i_MenuItemIdx = 0;
                else
                    m_i_MenuItemIdx++;
                break;
        }
    }

    public void GotoGame()
    {
        m_View.m_pge_gameswitch.SwitchFrame(this, m_View.m_pge_gameplay);
        m_View.m_pge_gameplay.NewGame(1);
    }

    public void GotoMenu()
    {
        m_i_FrameTimer = 0;
        m_i_MenuItemIdx = MENU_PLAY;
        m_i_FrameState = PAGES_MAIN_MENU;
    }

    //=显示部分及其子函数===========
    public void Show()
    {
        switch (m_i_FrameState)
        {
            case PAGES_MAIN_MENU:
                DrawManuBackGround();
                DrawMainMenu();
                if(m_i_FrameTimer == -1)
                {
                    m_View.exit = true;
                    return;
                    //m_View.m_App.notifyDestroyed();
                }
                break;
            case PAGES_OPTIONS:
                DrawManuBackGround();
                DrawOptionsMenu();
                break;
            case PAGES_HELP1:
                DrawGameBackGround();
                m_View.Blt(9, 11, m_Surface_MenuHelp1.width, m_Surface_MenuHelp1.height,
                           0, 0, m_Surface_MenuHelp1);
                break;
            case PAGES_HELP2:
                DrawGameBackGround();
                m_View.Blt(9, 11, m_Surface_MenuHelp2.width, m_Surface_MenuHelp2.height,
                           0, 0, m_Surface_MenuHelp2);
                break;
        }

    }

    private void DrawOptionsMenu()
    {
        m_View.Blt(22, 41, m_Surface_MenuOptions.width / 2, m_Surface_MenuOptions.height, 0, 0, m_Surface_MenuOptions);
        m_View.Blt(22, 41 + m_Surface_MenuOptions.height / 5 * m_i_OptionItemIdx,
                   m_Surface_MenuOptions.width / 2, m_Surface_MenuOptions.height / 5,
                   m_Surface_MenuOptions.width / 2, m_Surface_MenuOptions.height / 5 * m_i_OptionItemIdx,
                   m_Surface_MenuOptions);

        for (int i = 0; i < 3; i++)
        {
            m_View.Blt(67, 44 + i * 13, m_Surface_MenuOnOff.width / 2, m_Surface_MenuOnOff.height,
                       m_i_GameOption[i] * (m_Surface_MenuOnOff.width / 2), 0, m_Surface_MenuOnOff);
        }
    }

    private void DrawHelp1()
    {
        DrawGameBackGround();
        m_View.Blt(9, 11, m_Surface_MenuHelp1.width, m_Surface_MenuHelp1.height, 0,
                   0, m_Surface_MenuHelp1);
    }

    private void DrawHelp2()
    {
        DrawGameBackGround();
        m_View.Blt(9, 11, m_Surface_MenuHelp2.width, m_Surface_MenuHelp2.height, 0,
                   0, m_Surface_MenuHelp2);
    }

    private void DrawManuBackGround()
    {
        m_BackGraphy.setColor(62, 62, 62);
        m_BackGraphy.fillRect(0, 0, m_View.m_i_ScreenWidth, m_View.m_i_ScreenHeight);

        m_View.Blt(0, 1, SMALL_BLOCK_SIZE, SMALL_BLOCK_SIZE,
                   SMALL_BLOCK_SIZE * 2, 0, m_Surface_SmallRoad);
        m_View.Blt(0, 1 + SMALL_BLOCK_SIZE * 8, SMALL_BLOCK_SIZE,
                   SMALL_BLOCK_SIZE, SMALL_BLOCK_SIZE * 1, 0, m_Surface_SmallRoad);
        for (int i = 1; i < 7; i++)
        {
            m_View.Blt(SMALL_BLOCK_SIZE * i, 1, SMALL_BLOCK_SIZE,
                       SMALL_BLOCK_SIZE, 0, 0, m_Surface_SmallRoad);
            m_View.Blt(SMALL_BLOCK_SIZE * i, 1 + SMALL_BLOCK_SIZE * 8,
                       SMALL_BLOCK_SIZE, SMALL_BLOCK_SIZE, 0, 0, m_Surface_SmallRoad);
        }

        m_View.Blt(SMALL_BLOCK_SIZE * 7, 1, SMALL_BLOCK_SIZE, SMALL_BLOCK_SIZE,
                   SMALL_BLOCK_SIZE * 3, 0, m_Surface_SmallRoad);
        m_View.Blt(SMALL_BLOCK_SIZE * 7, 1 + SMALL_BLOCK_SIZE * 8,
                   SMALL_BLOCK_SIZE, SMALL_BLOCK_SIZE, SMALL_BLOCK_SIZE * 4, 0,
                   m_Surface_SmallRoad);

        for (int i = 1; i < 8; i++)
        {
            m_View.Blt(SMALL_BLOCK_SIZE * 7, 1 + SMALL_BLOCK_SIZE * i,
                       SMALL_BLOCK_SIZE, SMALL_BLOCK_SIZE, 0, 0,
                       m_Surface_SmallRoad);
            m_View.Blt(0, 1 + SMALL_BLOCK_SIZE * i, SMALL_BLOCK_SIZE,
                       SMALL_BLOCK_SIZE, 0, 0, m_Surface_SmallRoad);
        }
    }

    private void DrawMainMenu()
    {
        m_View.Blt(27, 23, m_Surface_TitleMain.width, m_Surface_TitleMain.height, 0,
                   0, m_Surface_TitleMain);
        m_View.Blt(32, 74, m_Surface_MenuMain.width / 2, m_Surface_MenuMain.height,
                   0, 0, m_Surface_MenuMain);
        m_View.Blt(32, 74 + m_Surface_MenuMain.height / 4 * m_i_MenuItemIdx,
                   m_Surface_MenuMain.width / 2, m_Surface_MenuMain.height / 4,
                   m_Surface_MenuMain.width / 2,
                   m_Surface_MenuMain.height / 4 * m_i_MenuItemIdx,
                   m_Surface_MenuMain);
    }

    private void DrawGameBackGround()
    {
        m_BackGraphy.setColor(62, 62, 62);
        m_BackGraphy.fillRect(0, 0, m_View.m_i_ScreenWidth, m_View.m_i_ScreenHeight);
        m_BackGraphy.setColor(255, 235, 0);
        m_BackGraphy.fillRect(0, 0, m_View.m_i_ScreenWidth, START_POS_Y);
        m_BackGraphy.fillRect(0, 0, START_POS_X, m_View.m_i_ScreenHeight);
        m_BackGraphy.fillRect(m_View.m_i_ScreenWidth - START_POS_X, 0, m_View.m_i_ScreenWidth, m_View.m_i_ScreenHeight);
        m_BackGraphy.fillRect(0, m_View.m_i_ScreenHeight - START_POS_Y, m_View.m_i_ScreenWidth, m_View.m_i_ScreenHeight);
    }
    //============================END=


    //=Saving and Loading Section===================
    String m_s_StoreString = "GoGoGoOptions";
    public void ReadOptionsRecords()
    {
        RecordStore rs;
        byte[] record;
        try
        {
            rs = RecordStore.openRecordStore(m_s_StoreString, false);
            if (rs.getNumRecords() == 0)
            {
                InitOptionsData();
                WriteOptionsRecord();
                return;
            }
            record = rs.getRecord(1);
            rs.closeRecordStore();
        }
        catch (RecordStoreException rse)
        {
            InitOptionsData();
            WriteOptionsRecord();
            return;
        }
        ByteArrayInputStream bais = new ByteArrayInputStream(record);
        DataInputStream is = new DataInputStream(bais);
        try
        {
            is.read(m_i_GameOption, 0, OPTION_TOTAL);
        }
        catch (IOException e)
        {
            InitOptionsData();
            WriteOptionsRecord();
            return;
        }
        rs = null;
        record = null;
        bais = null;
        is = null;
        return;
    }

    public void InitOptionsData()
    {
        for(int i = OPTION_TOTAL - 1; i >= 0; i --)
        {
            m_i_GameOption[i] = 0;
        }
    }

    public void WriteOptionsRecord()
    {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        DataOutputStream os = new DataOutputStream(baos);
        try
        {
            os.write(m_i_GameOption, 0, OPTION_TOTAL);
        }
        catch (IOException e)
        {
            return;
        }
        byte[] record = baos.toByteArray();
        RecordStore rs;
        try
        {
            RecordStore.deleteRecordStore(m_s_StoreString);
        }
        catch (RecordStoreException rse)
        {
        }
        try
        {
            rs = RecordStore.openRecordStore(m_s_StoreString, true);
            rs.addRecord(record, 0, record.length);
            rs.closeRecordStore();
        }
        catch (RecordStoreException rse)
        {
            return;
        }
        rs = null;
        record = null;
        baos = null;
        os = null;
    }

}