movingshape.java

简单的多字符java动画,方便理解Multi-threaded 的概念.

import java.awt.Image;
import java.awt.image.ImageObserver;

/*
 * Created on 12/04/2007
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */

/**
 * @author user
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class MovingShape extends SimpleShape
{

    public static int nBHit = 0;
    public static int nWHit = 0;
    
  private
    int 
        nType,          // Black L, Black T, 
                        // White L, White T, Cross Type
        deltaX = 0,
        deltaY = 0;
    
    
    
    public MovingShape( int nT, /* Symbol Type */ 
                        int x,  /* Top Left of Symbol */
                        int y,  /* Top Right of Symbol */
                        Image img,  /* Image Symbol */ 
                        int deltaX, /* Each X Move */
                        int deltaY) /* Each Y Move */
    {
        super(x, y, img);
        this.nType = nT;
        this.deltaX = deltaX;
        this.deltaY = deltaY;
       return;
    }// End Constructor Method

    
    public MovingShape(Image img)
    {
        super(img);
        return;
    }
    
    public void setType(int nT)
    {
        this.nType = nT;
        return;
    }
    
    public void setDeltaX(int x)
    {
        this.deltaX = x;
        return;
    }
    
    public void setDeltaY(int y)
    {
        this.deltaY = y;
        return;
    }
    
    public int getDeltaX()
    {
        return this.deltaX;
    }
    
    public int getDeltaY()
    {
        return this.deltaY;
    }
    
    public void move(int canvasWidth, int canvasHeight, ImageObserver observer)
    {
        boolean
            isTouched = false;
        
        if( (x+img.getWidth(observer)+ deltaX > canvasWidth) && (deltaX > 0))
        {
            deltaX = - deltaX;
            isTouched = true;
            // Boundary Touch 
        }
        else if( (y+img.getHeight(observer)+deltaY > canvasHeight) && (deltaY > 0))
        {
            deltaY = - deltaY;
            isTouched = true;
            // Boundary Touch 
        }
        else if( (x+deltaX<0) && (deltaX<0))
        {
            deltaX = - deltaX;
            isTouched = true;
            // Boundary Touch 
        }
        else if( (y+deltaY<0) && (deltaY)<0 )
        {
            deltaY = -deltaY;
            isTouched = true;
            // Boundary Touch 
        }
        
        if(isTouched)
        {
            
            if(nType == SetReader.BLACK_L || nType == SetReader.BLACK_T)
            {
                nBHit++;
                //System.out.println("Black Hits: " + nBHit);
                
            }
            
            if(nType == SetReader.WHITE_L || nType == SetReader.WHITE_T)
            {
                nWHit++;
            }
            
        }//End if isTouched
        
        x = this.x + deltaX;
        y = this.y + deltaY;
        
        return;
        
    }// End move method
    
     
}