Hi, I’m currently trying to program a flash game using actionscript 3.0 where users would step on insects. Basically, I added multiple instances of insects movieclip and remove them by using hitTest function. When the mouse_mc. hitTestObject(insect), there were times the insect was not removed.
Here are the errors i encountered:
Error #2025: The supplied DisplayObject must be a child of the caller.
at flash.display::DisplayObjectContainer/swapChildren()
at SteppingGame/hitTest()
Error #1009: Cannot access a property or method of a null object reference.
at insectmc/onEnterFrameEvent_SF()
I have been cracking my head for the past few days and hope you guys could help me see what cause the problem.
Here’s my as3 code:
[COLOR=Blue]package
{
import flash.display.MovieClip;
import flash.events.MouseEvent;
import flash.ui.Mouse;
import flash.display.Sprite;
import flash.text.TextFormat;
import flash.text.TextFieldType;
import flash.text.TextFieldAutoSize;
import flash.utils.Timer;
import flash.events.TimerEvent;
import flash.events.Event;
public class SteppingGame extends MovieClip
{
//No. of resets
private var noReset:Number = 0;
//init score equal to 0
private var hitscore:Number = 0;
//my insects
private var insect1:insectmc;
private var insect2:insectmc;
private var insect3:insectmc;
private var insect4:insectmc;
private var insect5:insectmc;
private var insect6:insectmc;
private var insect7:insectmc;
private var insect8:insectmc;
private var insect9:insectmc;
private var insect10:insectmc;
//my fishes
private var fish1:fishmc;
private var fish2:fishmc;
private var fish3:fishmc;
public function SteppingGame()
{
}
private function startlevel1():void
{
showGameScore();
stage.addEventListener(MouseEvent.CLICK, hitTest);
stage.addEventListener(MouseEvent.MOUSE_MOVE, mouseListener);
insect1= new insectmc();
insect2= new insectmc();
insect3= new insectmc();
insect4= new insectmc();
insect5= new insectmc();
fish1 = new fishmc();
fish2 = new fishmc();
fish3 = new fishmc();
addChild(fish1);
addChild(fish2);
addChild(fish3);
addChild(insect1);
addChild(insect2);
addChild(insect3);
addChild(insect4);
addChild(insect5);
trace(getChildAt(0));
StartCountDown();
}
public function mouseListener(event:MouseEvent):void
{
Mouse.hide();
mouse_mc.x = mouseX;
mouse_mc.y = mouseY;
}
public function hitTest(event:MouseEvent)
{
trace(insect1);
var squish:SquashMC = new SquashMC();
if (mouse_mc.hitTestObject(insect1))
{
hitscore = hitscore + 10;
squish.rotation = insect1.rotation;
squish.x = mouse_mc.x;
squish.y = mouse_mc.y;
removeChild(insect1);
addChildAt(squish,6);
}
else if (mouse_mc.hitTestObject(insect2))
{
hitscore = hitscore + 10;
squish.rotation = insect2.rotation;
removeChild(insect2);
squish.x = mouse_mc.x;
squish.y = mouse_mc.y;
addChildAt(squish,6);
}
else if (mouse_mc.hitTestObject(insect3))
{
hitscore = hitscore + 10;
squish.rotation = insect3.rotation;
removeChild(insect3);
squish.x = mouse_mc.x;
squish.y = mouse_mc.y;
addChildAt(squish,6);
}
else if (mouse_mc.hitTestObject(insect4))
{
hitscore = hitscore + 10;
squish.rotation = insect4.rotation;
removeChild(insect4);
squish.x = mouse_mc.x;
squish.y = mouse_mc.y;
addChildAt(squish,6);
}
else if (mouse_mc.hitTestObject(insect5))
{
hitscore = hitscore + 10;
squish.rotation = insect5.rotation;
removeChild(insect5);
squish.x = mouse_mc.x;
squish.y = mouse_mc.y;
addChildAt(squish,6);
}
else if (mouse_mc.hitTestObject(insect6))
{
hitscore = hitscore + 10;
squish.rotation = insect6.rotation;
removeChild(insect6);
squish.x = mouse_mc.x;
squish.y = mouse_mc.y;
addChildAt(squish,6);
}
else if (mouse_mc.hitTestObject(insect7))
{
hitscore = hitscore + 10;
squish.rotation = insect7.rotation;
removeChild(insect7);
squish.x = mouse_mc.x;
squish.y = mouse_mc.y;
addChildAt(squish,6);
}
else if (mouse_mc.hitTestObject(insect8))
{
hitscore = hitscore + 10;
squish.rotation = insect8.rotation;
removeChild(insect8);
squish.x = mouse_mc.x;
squish.y = mouse_mc.y;
addChildAt(squish,6);
}
else if (mouse_mc.hitTestObject(insect9))
{
hitscore = hitscore + 10;
squish.rotation = insect9.rotation;
removeChild(insect9);
squish.x = mouse_mc.x;
squish.y = mouse_mc.y;
addChildAt(squish,6);
}
else if (mouse_mc.hitTestObject(insect10))
{
hitscore = hitscore + 10;
squish.rotation = insect10.rotation;
removeChild(insect10);
squish.x = mouse_mc.x;
squish.y = mouse_mc.y;
addChildAt(squish,6);
}
else
{
insect1.newpos();
insect2.newpos();
insect3.newpos();
insect4.newpos();
insect5.newpos();
insect6.newpos();
insect7.newpos();
insect8.newpos();
insect9.newpos();
insect10.newpos();
}
showGameScore();
}
public function StartCountDown():void
{
myText.text = "Time: " + String(timeLimit);
timer.reset();
timer.start();
timer.addEventListener(TimerEvent.TIMER, timerHandler);
timer.addEventListener(TimerEvent.TIMER_COMPLETE, completeHandler);
}
//Check current time
public function timerHandler(e:TimerEvent):void
{
myText.background = false;
myText.text = "Time: " + String((timeLimit) - timer.currentCount);
}
//Time is finished, go to game over screen
private function completeHandler(e:TimerEvent):void
{
noReset++;
if (noReset > 1)
{
gotoAndStop(6);
myText.visible = false;
overText.text = "Game Over";
}else{
nextFrame();
}
}
public function showGameScore()
{
showScore.text = String("Score: " + hitscore);
}
}
[COLOR=Black]
Pardon my messy codes, I’m quite new to as3.[/COLOR]
[COLOR=Black]Thanks and Regards
kup0[/COLOR]
[/COLOR]
