cloud.java

一款模拟飞行类游戏的Java源代码

/*  Bomber for Nokia Series 60 Phones
    Copyright (C) 2003, 2004  While True, d.o.o.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
	
    For any info contact [e-mail].
*/

/*==========================================================================;
 *
 *  While True, d.o.o.
 *	
 *  File:       Cloud.java
 *  Content:    Cloud object
 *  Created:    November 2002
 *  Created by: gorazd breskvar
 *
 ****************************************************************************/
package bomber;
import javax.microedition.lcdui.*;

public class Cloud implements Visual 
{

    protected Drawable  m_sprite;
    protected Point     m_pos;
    protected int      m_speed;
    protected GameState m_game_state;
    
    public Cloud(GameState gs, Drawable sprite, int x, int y, int speed) 
    {
        super();
        m_pos = new Point(x, y);
        m_sprite = sprite;
        m_speed = speed;
        m_game_state = gs;
    }
    
    public void draw(Graphics g, int x, int y) 
    {
          m_sprite.drawImage(g, 0, Common.toInt(m_pos.x - x), Common.toInt(m_pos.y - y));
    }
    
    public BoundingBox getBoundingBox() 
    {
        return null;
    }
    
    public int handle(int delta) 
    {
        m_pos.x += Common.fastMul(delta, m_speed);
        int w = Common.toFP(m_sprite.getWidth(0));
        if (m_pos.x - w > m_game_state.getRightBound()) m_pos.x = m_game_state.getLeftBound() - w ;
        else if (m_pos.x + w < m_game_state.getLeftBound()) m_pos.x = m_game_state.getRightBound() + w;
        
        return NONE;
    }
}