Java Reference
In-Depth Information
protected
protected volatile
false ;
/** The time in mSec to pause between each move. */
protected
volatile boolean
boolean done = false
protected volatile
int sleepTime = 250 ;
/** The direction for this particular sprite. */
protected
volatile int
protected int
int direction ;
/** The direction for going across the page */
public
public static
int HORIZONTAL = 1 ;
/** The direction for going up and down */
public
static final
final int
public static
int VERTICAL = 2 ;
/** The direction for moving diagonally */
public
static final
final int
public static
static final
final int
int DIAGONAL = 3 ;
/** Construct a Sprite with a Component parent, image and direction.
* Construct and start a Thread to drive this Sprite.
*/
public
public Sprite ( Component parent , Image img , int
int dir ) {
this
this . parent = parent ;
this
this . img = img ;
switch
switch ( dir ) {
case
case VERTICAL: case
case HORIZONTAL: case
case DIAGONAL:
direction = dir ;
break
break ;
default
default :
throw
throw new
new IllegalArgumentException (
"Direction " + dir + " invalid" );
}
setSize ( img . getWidth ( this
this ), img . getHeight ( this
this ));
}
/** Construct a sprite with the default direction */
public
public Sprite ( Component parent , Image img ) {
this
this ( parent , img , DIAGONAL );
}
/** Start this Sprite's thread. */
public
public void
void start () {
t = new
this );
t . setName ( "Sprite #" + ++ spriteNumber );
t . start ();
new Thread ( this
}
/** Stop this Sprite's thread. */
public
public void
void stop () {
iif ( t == null
null )
return
return ;
System . out . println ( "Stopping " + t . getName ());
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