Actionscript3: Countdown number of ducks - actionscript-3

Question

Clouds,
ducks,
score
display
and
waves
should
each
have
a
class
to
govern
their
movement
and
behavior.
When
ducks
are
clicked
on
they
are
“shot”
and
the
duck
is
removed
from
the
array
as
well
as
from
the
stage
(use
arrayName.splice()
for
this).
The
score
display
should
count
down
as
this
occurs.
The
number
of
ducks
left
should
be
a
property
within
the
Score
Display’s
class
and
adjusted
by
Main
when
the
ducks
are
shot.
When
all
the
ducks
are
“shot”
the
game
should
animate
the
“you
win”
message.
This
can
be
done
by
adding
and
removing
event
listeners
that
associate
an
ENTER
FRAME
event
with
an
animating
function.
(This
is
worth
only,
so
leave
it
for
last).
When
the
ducks
are
“shot”
the
waves
and
clouds
should
also
be
removed
from
view
AND
from
their
respective
arrays.
Game
should
reset
after
player
has
won
or
lost
many
times.
(not
just
once)
I have most of this done, I'm just having trouble with the scoreboard. Any tips on how to reset everything, and code the you win sign would help too.
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.text.TextField;
[SWF(width="800", height="600", backgroundColor="#E6FCFF")]
public class Main extends Sprite
{
private var _sittingDucks:Array = []; //always set your arrays with [] at the top
public var _scoreDisplay:TextField
public function Main()
{
//adding the background, and positioning it
var background:Background = new Background();
this.addChild(background);
background.x = 30;
background.y = 100;
for(var i:uint = 0; i < 5; i++)
{
//adding the first cloud, and positioning it
var clouds:Clouds = new Clouds();
this.addChild(clouds);
clouds.x = 130 + Math.random() * 600; //130 to 730
clouds.y = 230;
clouds.speedX = Math.random() * 3;
clouds.width = clouds.height = 200 * Math.random()//randomly changes the clouds demensions
}
var waves:Waves = new Waves();
this.addChild(waves);
waves.x = 0;
waves.y = 510;
waves.speedX = Math.random() * 3;
for(var j:uint = 0; j < 8; j++)
{
var ducks:Ducks = new Ducks();
this.addChild(ducks);
ducks.x = 100 + j * 100;
ducks.y = 475;
_sittingDucks.push(ducks);
ducks.addEventListener(MouseEvent.CLICK, ducksDestroy);
}
var waves2:Waves = new Waves();
this.addChild(waves2);
waves2.x = 0;
waves2.y = 520;
waves2.speedX = Math.random() * 3;
var setting:ForeGround = new ForeGround();
this.addChild(setting);
setting.x = 0;
setting.y = 50;
setting.width = 920;
var board:ScoreDisplay = new ScoreDisplay();
this.addChild(board);
board.x = 570;
board.y = 35;
}
private function ducksDestroy(event:MouseEvent):void
{
//store the crow we clicked on in a new array
var clickedDuck:Ducks = Ducks(event.currentTarget);
//remove it from the crows array
//find the address of the crow we are removing
var index:uint = _sittingDucks.indexOf(clickedDuck);
//remove it from the array with splice
_sittingDucks.splice(index, 1);
//remove it from my document's display list
this.removeChild(clickedDuck);
}
}
import flash.events.Event;
import flash.events.MouseEvent;
import flash.text.TextField;
import ScoreDisplayBase; // always import the classes you are using
public class ScoreDisplay extends ScoreDisplayBase
{
private var txt:TextField; // where is it initialized?
private var score:uint = 0;
public function ScoreDisplay()
{
super(); // do you init txt here?
}
public function scoreUpdate():void
{
score += 10; // ok, so I suppose that your score does not represent the remaining ducks as you said, just only a score
txt.text = score.toString();
}
}

Answer 1

Aaaalrighty:
You do want to create the TextField txt in ScoreDisplay's constructor. Instantiate it, set its text to initial score (0), and addChild(txt).
In order to set the score later, we'll need a way to reference the display.
//you want a reference to the ScoreDisplay, not this
public var _scoreDisplay:TextField //no
public var _scoreDisplay:ScoreDisplay //yes
and when you create it in the Main constructor, we need to keep a reference.
_scoreDisplay = :ScoreDisplay = new ScoreDisplay();
this.addChild(_scoreDisplay );
_scoreDisplay .x = 570;
_scoreDisplay .y = 35;
If you want to be able to reset the game, I would recommend taking the duck creation and placing it in a method outside the Main class' constructor. You should also create a 'reset' function that sets the score (and the display) to 0 in ScoreDisplay.
private function spawnDucks() {
for(var j:uint = 0; j < 8; j++)
{
var ducks:Ducks = new Ducks();
this.addChild(ducks);
ducks.x = 100 + j * 100;
ducks.y = 475;
_sittingDucks.push(ducks);
ducks.addEventListener(MouseEvent.CLICK, ducksDestroy);
}
}
and then you call it in the constructor, and can call it again when you need to reset the game.
ducksDestroy(event:MouseEvent) is going to be where you want to recalculate the score, check if you've won, show a message, and reset the game. You'll need some kind of popup to display, here is a decent one if you don't know where to get started at with that.
private function ducksDestroy(event:MouseEvent):void
{
//store the crow we clicked on in a new array
var clickedDuck:Ducks = Ducks(event.currentTarget);
//remove it from the crows array
//find the address of the crow we are removing
var index:uint = _sittingDucks.indexOf(clickedDuck);
//remove it from the array with splice
_sittingDucks.splice(index, 1);
//remove it from my document's display list
this.removeChild(clickedDuck);
//update the score
_scoreDisplay.scoreUpdate();
//Check if all the ducks are gone
if (_sittingDucks.length == 0) {
//All the ducks are dead, we've won the game!
//create some kind of popup to display.
//add it to the screen, have some form
//of button (or a timer) take it away
//whatever takes the popup away, have it call 'reset'
}
}
private function reset():void
{
//write a reset method to clear the score
_scoreDisplay.reset();
//create some ducks and you're ready to go!
spawnDucks();
}