mapcontainer.java

Tank 手机游戏 J2ME 简单么明了

package pack05;
import javax.microedition.lcdui.game.Sprite;
import javax.microedition.lcdui.game.TiledLayer;
/**
 * 坦克游戏地图。其中包含若干个单元素平铺层。
 * @author 孙继磊
 *
 */
public class MapContainer {
	//地图上的元素类型
	public static final int NOTHING=0;
	public static final int GRASS=1;
	public static final int WATER=2;
	public static final  int STEEL=3;
	public static final int BRICK=4;
	//元素类型数量（不包括空白）
	public static final int MapObjectTypeNum=4;
	//地图大小，行数，列数
	public  static final int ROWS=18;
	public static final int COLUMNS=15;
	//地图中单元格的宽和高
	public static final int CellWidth=16;
	public static final int CellHeight=16;
	//地图中包含的背景层
	private GameMap[] layers;
	//地图元素数组
	private int[][][] mapArray=
	{{
		{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
	    { 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0 },
	    { 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0 },
	    { 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0 },
	    { 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0 },
	    { 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0 },
	    { 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0 },
	    { 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0 },
	    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
	    { 3, 0, 4, 4, 4, 0, 4, 4, 4, 0, 4, 4, 4, 0, 3 },
	    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
	    { 0, 4, 0, 4, 0, 0, 4, 0, 4, 0, 0, 4, 0, 4, 0 },
	    { 0, 4, 0, 4, 0, 0, 4, 3, 4, 0, 0, 4, 0, 4, 0 },
	    { 0, 4, 0, 4, 0, 0, 4, 0, 4, 0, 0, 4, 0, 4, 0 },
	    { 0, 4, 0, 4, 0, 0, 4, 0, 4, 0, 0, 4, 0, 4, 0 },
	    { 0, 4, 0, 4, 0, 0, 0, 0, 0, 0, 0, 4, 0, 4, 0 },
	    { 0, 4, 0, 4, 0, 0, 4, 4, 4, 0, 0, 4, 0, 4, 0 },
	    { 0, 0, 0, 0, 0, 0, 4, 0, 4, 0, 0, 0, 0, 0, 0 }
	    }};
	public MapContainer()
	{
		layers=new GameMap[MapObjectTypeNum];
		for(int i=0;i<MapObjectTypeNum;i++)
		{
			layers[i]=new GameMap(i+1);			
		}
	}
	/**
	 * 加载某一关地图
	 * @param level 关卡
	 */
	public void loadMap(int level)
	{
		int type;
		for(int i=0;i<ROWS;i++)
			for(int j=0;j<COLUMNS;j++)
			{
				type=mapArray[level -1][i][j];
				//把地图元素放到对应的层中
				if(type>0)
					layers[type-1].setCell(j, i, type);
			}		
	}
	/**
	 * 得到地图宽度
	 * @return 地图宽度
	 */
	public static int getWidth(){return CellWidth*COLUMNS;}
	/**
	 * 得到地图高度
	 * @return 地图高度
	 */
	public static int getHeight(){return CellHeight*ROWS;}
	public TiledLayer[] getLayers(){return layers;}
	/**
	 * 检查指定精灵是否与地图中某元素碰撞
	 * @param s 精灵
	 * @return 若发生碰撞，则返回碰撞的元素类型，否则返回0
	 */
	public int checkCollide(Sprite s)
	{
		for(int i=0;i<layers.length;i++)
			if(s.collidesWith(layers[i], false))
				return layers[i].getElementtype();
		return 0;
	}
	/**
	 * 检测指定精灵是否超出地图边界
	 * @param s 精灵
	 * @return 是否越界
	 */
	public boolean isOutOfBorder(Sprite s)
	{
		boolean b=(s.getX()<0 || s.getX()+s.getWidth()>MapContainer.getWidth()
				||s.getY()<0 || s.getY()+s.getHeight()>MapContainer.getHeight());	
		
		return b;
	}
}