Game Development Reference
In-Depth Information
Defining the constructor and init function for Circle.as
The constructor takes a single integer parameter representing either the
CIRCLE_GOOD
or
CIRCLE_BAD
static constant integers of the
Circle
class. Once, the
init
function is called to create
the look of the circle.
public function Circle(typeval:int) {
buttonMode = true;
useHandCursor = true;
init(typeval);
}
public function init(typeval:int):void {
var shapeColor:Number;
switch (typeval) {
case CIRCLE_GOOD:
//good circle
shapeColor = 0x0000FF;
type = typeval;
break;
case CIRCLE_BAD:
//bad circle
shapeColor = 0xFF0000;
type = typeval;
break;
}
graphics.clear();
graphics.lineStyle(2, 0xffffff);
graphics.beginFill(shapeColor);
graphics.drawCircle(5, 5, 8);
graphics.endFill();
x = int(Math.random() * 399);
y = int(Math.random() * 399);
scaleX = .5;
scaleY = .5;
nextScale = scaleX;
addEventListener(MouseEvent.MOUSE_DOWN, clickedListener,
false, 0, true);
}
The real meat of the
Circle
class is in the
init
function. Before we get to that, notice that we set
the
buttonMode
and
userHandCursor
to
true
for the
Circle
class. We have access to these
properties because we extended the
Sprite
class.
The
init
function must first do a
switch:case
on the
typeval
passed in to set the properties of
either a
CIRCLE_BAD or a CIRCLE_GOOD
circle. We use a
switch:case
statement here, because we
might want to create more than just two circle types in the future if we ever consider expanding
this game into a more elaborate creation.
