Canvasクラスを更に使いこなす(5ページ目)

ソリティア・ゲームのソースコード

※「img0.gif」「img1.gif」「img2.gif」に、それぞれ「何もない状態」「コマがある状態」「コマが選択された状態」のイメージを作成し、「res」フォルダに入れてください。

import com.nttdocomo.io.ConnectionException;
import com.nttdocomo.ui.*;

public class SampleIApp extends IApplication {

  public void start() {
    Display.setCurrent(new MainCanvas(this));
  }
}

class MainCanvas extends Canvas {
  IApplication iapp;
  int[][] data;
  int x,y,selx,sely;
  Image[] img;
  
  MainCanvas(IApplication app){
    super();
    this.iapp = app;
    data = new int[][]{
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,0,0,0}};
    this.setSoftLabel(Frame.SOFT_KEY_1, "NEW");
    this.setSoftLabel(Frame.SOFT_KEY_2, "QUIT");
    try {
      img = new Image[]{null,null,null,null};
      MediaImage mi0 =MediaManager.getImage("resource:///img0.gif");
      mi0.use();
      img[0] = mi0.getImage();
      MediaImage mi1 =MediaManager.getImage("resource:///img1.gif");
      mi1.use();
      img[1] = mi1.getImage();
      MediaImage mi2 =MediaManager.getImage("resource:///img2.gif");
      mi2.use();
      img[2] = mi2.getImage();
    } catch (IllegalArgumentException e) {
      e.printStackTrace();
    } catch (SecurityException e) {
      e.printStackTrace();
    } catch (UIException e) {
      e.printStackTrace();
    } catch (ConnectionException e) {
      e.printStackTrace();
    }
  }
  
  public void init(){
    for(int i = 0;i < 5;i++)
      for(int j = 0;j < 5;j++)
        data[i][j] = 1;
    x = 2;
    y = 2;
    selx = 2;
    sely = 2;
    data[x][y] = 0;
    this.repaint();
  }
  
  public void select(){
    if (x == selx && y == sely){
    } else {
      boolean f = true;
      f = data[x][y] == 0 ? f : false;
      f = data[selx][sely] == 1 ? f : false;
      f = (Math.abs(x - selx) == 0 || Math.abs(x - selx) == 2) ? f : false;
      f = (Math.abs(y - sely) == 0 || Math.abs(y - sely) == 2) ? f : false;
      int midx = (x + selx) / 2;
      int midy = (y + sely) / 2;
      f = data[midx][midy] == 1 ? f : false;
      if (f){
        data[midx][midy] = 0;
        data[selx][sely] = 0;
        data[x][y] = 1;
      }
    }
    selx = x;
    sely = y;
    this.repaint();
  }
  
  public void move(int dx,int dy){
    x = x + dx;
    y = y + dy;
    x = x < 0 ? 0 : x;
    x = x > 4 ? 4 : x;
    y = y < 0 ? 0 : y;
    y = y > 4 ? 4 : y;
    this.repaint();
  }
  
  public void paint(Graphics g) {
    if (img[0] == null) return;
    g.lock();
    g.setColor(Graphics.getColorOfRGB(255, 255, 255));
    g.fillRect(0, 0, 250, 250);
    for(int i = 0;i < 5;i++)
      for(int j = 0;j < 5;j++){
        switch(data[i][j]){
        case 0:
          g.drawImage(img[0],i * 32, j * 32);
          break;
        case 1:
          if (i == selx && j == sely){
            g.drawImage(img[2],i * 32, j * 32);
          } else {
            g.drawImage(img[1],i * 32, j * 32);
          }
          break;
        }
      }
    g.setColor(Graphics.getColorOfRGB(255, 0, 0));
    g.drawRect(x * 32, y * 32, 32, 32);
    g.unlock(true);
  }

  public void processEvent(int type, int param) {
    super.processEvent(type, param);
    switch(type){
    case Display.KEY_PRESSED_EVENT:
      switch(param){
      case Display.KEY_SOFT1:
        init();
        break;
      case Display.KEY_SOFT2:
        iapp.terminate();
        break;
      case Display.KEY_UP:
        move(0,-1);
        break;
      case Display.KEY_DOWN:
        move(0,1);
        break;
      case Display.KEY_RIGHT:
        move(1,0);
        break;
      case Display.KEY_LEFT:
        move(-1,0);
        break;
      case Display.KEY_SELECT:
        select();
        break;
      }
    }
  }
  
}