ActionScript 3.0 - Health bar zero, go to game over

Report · Dec 24, 2015

Initialize variables,

var bungaList:Array = new Array();

var maxHP:int = 90;

var currentHP:int = maxHP;

var percentHP:Number = currentHP / maxHP;

Functions,

function loop2(e:Event):void{

....

bungaList.push(back.other.bunga1);

bungaList.push(back.other.bunga2);

bungaList.push(back.other.bunga3);

bungaList.push(back.other.bunga4);

bungaList.push(back.other.bunga5);

bungaList.push(back.other.bunga6);

bungaList.push(back.other.bunga7);

if( bungaList.length > 0){

for(var r:int = 0; r < bungaList.length; r++){

if (player.hitTestObject(bungaList) && onTouch==false){

onTouch=true;

trace("player collided with enemy");

currentHP -= 30;//health bar decrease

if(currentHP <= 0)

{

currentHP = 0;

trace("You died!");

trace("restart level");

removeEventListener(Event.ENTER_FRAME, loop2);

gotoAndStop(1,"Game Over");

}

else

{

setTimeout(function(){onTouch=false;}, 1000); // disable it after 1 second if the player still alive.

}

updateHealthBar2();

}

function updateHealthBar2():void

{

percentHP = currentHP / maxHP;

healthBar.barColor.scaleX = percentHP;

}

The output is when the health bar become zero, cannot go to the next scene, which is game over.

Give errors,

TypeError: Error #1009: Cannot access a property or method of a null object reference.

at Untitled_3_fla::MainTimeline/updateHealthBar2()[Untitled_3_fla.MainTimeline::frame1:578]

at Untitled_3_fla::MainTimeline/loop2()[Untitled_3_fla.MainTimeline::frame1:346]

and at line 578 is

healthBar.barColor.scaleX = percentHP;

and at line 346 is

updateHealthBar2();

How to solve this?

Report · Dec 24, 2015

I'd imagine either currentHP or maxHP are not defined previous to the percentHP assignment.

Report · Dec 24, 2015

Try:

for(var r:int = 0; r < bungaList.length; r++){

if (player.hitTestObject(bungaList) && onTouch==false){

onTouch=true;

trace("player collided with enemy");

currentHP -= 30;//health bar decrease

updateHealthBar2();

if(currentHP <= 0)

{

currentHP = 0;

trace("You died!");

trace("restart level");

removeEventListener(Event.ENTER_FRAME, loop2);

gotoAndStop(1,"Game Over");

}

else

{

setTimeout(function(){onTouch=false;}, 1000); // disable it after 1 second if the player still alive.

}

// updateHealthBar2(); remove this line from here

Report · Dec 24, 2015

If i put updateHealthBar2(); , it will gives errors.

I forgot that you already told me before. When i tried, it works.

Thank you.

if (enemyList.length > 0){

    for (var m:int = 0; m < enemyList.length; m++){

if ( player.hitTestObject(enemyList) && onTouch==false){

          onTouch=true;

trace("player collided with enemy");

currentHP -= 30;//health bar decrease

// updateHealthBar2();

if(currentHP <= 0)

{

currentHP = 0;

setTimeout (function (){    endpoint=true;

trace("You died!");

                            removeEventListener(Event.ENTER_FRAME, loop2);

                            gotoAndStop(1,"Scene 2");}, 1000);

}

else

{

setTimeout(function(){onTouch=false;}, 1000); // disable it after 1 second if the player still alive.

}

updateHealthBar2();

}

}

}

Report · Dec 24, 2015

I don't think you need that, the error comes because you're leaving to another scene before the function being completed, I think that you've to update the HealthBar in somewhere else before you go to another scene.

Report · Dec 24, 2015

Try like this:

if( bungaList.length > 0){

updateHealthBar2();

for(var r:int = 0; r < bungaList.length; r++){

if (player.hitTestObject(bungaList) && onTouch==false){

onTouch=true;

trace("player collided with enemy");

currentHP -= 30;//health bar decrease

if(currentHP <= 0)

{

currentHP = 0;

trace("You died!");

trace("restart level");

removeEventListener(Event.ENTER_FRAME, loop2);

updateHealthBar2();

gotoAndStop(1,"Game Over");

}

else

{

setTimeout(function(){onTouch=false;}, 1000); // disable it after 1 second if the player still alive.

}

Report · Dec 24, 2015

Still gives error,

TypeError: Error #1009: Cannot access a property or method of a null object reference.

at RECOVER_tettok_fla::MainTimeline/loop2()[RECOVER_tettok_fla.MainTimeline::frame1:335]

where frame1:335 is

if (player.hitTestObject(bungaList) && onTouch==false){}

Report · Dec 24, 2015

if (bungaList.length > 0) {

for (var r: int = 0; r < bungaList.length; r++) {

if (player.hitTestObject(bungaList) && onTouch == false) {

onTouch = true;

trace("player collided with enemy");

currentHP -= 30; //health bar decrease

updateHealthBar2();

}

function updateHealthBar2(): void

{

percentHP = currentHP / maxHP;

healthBar.barColor.scaleX = percentHP;

if (currentHP <= 0)

{

currentHP = 0;

trace("You died!");

trace("restart level");

removeEventListener(Event.ENTER_FRAME, loop2);

gotoAndStop(1, "Game Over");

}

else

{

setTimeout(function () {onTouch = false;}, 1000); // disable it after 1 second if the player still alive.

}

Report · Dec 24, 2015

still gives error,

TypeError: Error #1009: Cannot access a property or method of a null object reference.

at Untitled_2_fla::MainTimeline/loop2()[Untitled_2_fla.MainTimeline::frame1:330]

frame1:330

if (player.hitTestObject(bungaList) && onTouch==false){}