data.java

一个商业的J2ME音乐游戏

package djdance;

import java.io.DataInputStream;
import java.io.InputStream;

public class Data
{

  int data[][];
  int count;


  public Data()
  {

  }


  void Init1(byte lv)
  {
      Init2("/d1.dat",lv);
  }


  void Init2(String s,byte lv)
  {
      try
      {
          InputStream inputstream = getClass().getResourceAsStream(s);
          Init3(inputstream,lv);
          inputstream.close();
      }
      catch(Exception exception) { }
  }


  void Init3(InputStream inputstream,byte lv)
  {

      byte k;

      DataInputStream datainputstream = new DataInputStream(inputstream);
      try
      {
          count = (int)datainputstream.readShort();
          data = null;
          data = new int[count][3];

          for(int j = 0; j < count; j++)
          {
              k=(byte)datainputstream.read();
              byte temp1,temp2;

              temp1=(byte)(k & 0xf);

              switch(temp1)
              {
                 case 1:
                    data[j][0]=11;    // X的坐标
                    break;

                 case 2:
                    data[j][0]=11+38;
                    break;

                 case 4:
                    data[j][0]=11+38*2;
                    break;

                 case 8:
                    data[j][0]=11+38*3;
                    break;
              }


              temp2=(byte)((k>>4) & 0xf);

              switch(temp2)
              {
                 case 0:
                    data[j][2]=0;     // 球的颜色
                    break;

                 case 1:
                    data[j][2]=1;
                    break;

                 case 2:
                    data[j][2]=2;
                    break;

                 case 4:
                    data[j][2]=3;
                    break;
              }



              switch(lv)
              {
                  case Screen.Easy:
                       data[j][1]=-43-91*j;        // Y的坐标   step==7
                       break;

                  case Screen.Normal:
                       data[j][1]=-49-90*j;        // Y的坐标   step==10
                       break;

                  case Screen.Hard:
                       data[j][1]=-43-84*j;        // Y的坐标   step==14
                       break;

              }


          }

          datainputstream.close();

      }
      catch(Exception exception) { }

  }


}