ActionScript 3 - cannot move to the next scene.

[safiahn40752198]

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at CompangleComplete_fla::MainTimeline/loop()[CompangleComplete_fla.MainTimeline::frame119:205]

I got this error.

When the player touch the "black rectangle", supposed to move to the next scene.

I try to check where is the problem, then I try this

if(endpoint==false){
if(player.hitTestObject(back.other)){

endpoint==true;
trace("next scene");}

the code run without error.

But then I try this,

if(endpoint==false){
if(player.hitTestObject(back.other)){

endpoint==true;
gotoAndPlay(2, "Scene 9");}

I got error like above.

The code for my gotoAndPlay(2, "Scene 9") is wrong. how i should change it?

[nezarov]

Correct the code and try:

if(endpoint==false){
if(player.hitTestObject(back.other)){

endpoint=true;
trace("next scene");}

the code run without error.

But then I try this,

if(endpoint==false){
if(player.hitTestObject(back.other)){

endpoint=true;
gotoAndPlay(2, "Scene 9");}

[safiahn40752198]

still give the same error.

[nezarov]

Can you show the "loop" event listener & its function code?

[safiahn40752198]

addEventListener(Event.ENTER_FRAME, loop);

function loop(e:Event):void{

  if(back.collisions.hitTestPoint(player.x + leftBumpPoint.x, player.y + leftBumpPoint.y, true)){

  //trace("leftBumping");

  leftBumping = true;

  } else {

  leftBumping = false;

  }

  if(back.collisions.hitTestPoint(player.x + rightBumpPoint.x, player.y + rightBumpPoint.y, true)){

  //trace("rightBumping");

  rightBumping = true;

  } else {

  rightBumping = false;

  }

  if(back.collisions.hitTestPoint(player.x + upBumpPoint.x, player.y + upBumpPoint.y, true)){

  //trace("upBumping");

  upBumping = true;

  } else {

  upBumping = false;

  }

  if(back.collisions.hitTestPoint(player.x + downBumpPoint.x, player.y + downBumpPoint.y, true)){

  //trace("downBumping");

  downBumping = true;

  } else {

  downBumping = false;

  }

  if(leftPressed){

  xSpeed -= speedConstant;

  player.scaleX = -1;

  } else if(rightPressed){

  xSpeed += speedConstant;

  player.scaleX = 1;

  }

  if(leftBumping){

  if(xSpeed < 0){

  xSpeed *= -0.0001;

  }

  }

  if(rightBumping){

  if(xSpeed > 0){

  xSpeed *= -0.0001;

  }

  }

  if(upBumping){

  if(ySpeed < 0){

  ySpeed *= -0.0001;

  }

  }

  if(downBumping){ //if we are touching the floor

  if(ySpeed > 0){

  ySpeed = 0; //set the y speed to zero

  }

  if(upPressed){ //and if the up arrow is pressed

  ySpeed = jumpConstant; //set the y speed to the jump constant

  }

  //DOUBLE JUMP

  if(upReleasedInAir == true){

  upReleasedInAir = false;

  }

  if(doubleJumpReady == false){

  doubleJumpReady = true;

  }

  } else { //if we are not touching the floor

  ySpeed += gravityConstant; //accelerate downwards

  //DOUBLE JUMP

  if(upPressed == false && upReleasedInAir == false){

  upReleasedInAir = true;

  //trace("upReleasedInAir");

  }

  if(doubleJumpReady && upReleasedInAir){

  if(upPressed){ //and if the up arrow is pressed

  //trace("doubleJump!");

  doubleJumpReady = false;

  ySpeed = jumpConstant; //set the y speed to the jump constant

  }

  }

  }

  if(endpoint==false){

  if(player.hitTestObject(back.other)){

  endpoint=true;

  gotoAndPlay(1,"Scene 9");

  }

  }

  if(xSpeed > maxSpeedConstant){ //moving right

  xSpeed = maxSpeedConstant;

  } else if(xSpeed < (maxSpeedConstant * -1)){ //moving left

  xSpeed = (maxSpeedConstant * -1);

  }

  xSpeed *= frictionConstant;

  ySpeed *= frictionConstant;

  if(Math.abs(xSpeed) < 0.5){

  xSpeed = 0;

  }

  scrollX -= xSpeed;

  scrollY -= ySpeed;

  back.x = scrollX;

  back.y = scrollY;

  sky.x = scrollX * 0.2;

  sky.y = scrollY * 0.2;

  if( ( leftPressed || rightPressed || xSpeed > speedConstant || xSpeed < speedConstant *-1 ) && downBumping){

  animationState = "running";

  }

  else if(downBumping){

  animationState = "idle";

  } else {

  animationState = "jumping";

  }

  if(player.currentLabel != animationState){

  player.gotoAndStop(animationState);

  }

}

[nezarov]

If you have any EnterFrame event listener remove it before you go to another scene:

if(endpoint==false){

if(player.hitTestObject(back.other)){

endpoint=true;

removeEventListener(Event.ENTER_FRAME, loop);
gotoAndPlay(2, "Scene 9");}

[safiahn40752198]

Still give the same error. May i know, the Scene 9 should be a movie clip or anything?

[safiahn40752198]

Let say, this is my scene 9, frame 1.

I change from the code,

gotoAndPlay(1, "Scene 9");

Then, I saved the black rectangle in layer 1, frame 1.

then, turn it into movie Clip with instances name is lol

My Scene 9 is correct right?

[nezarov]

Yes it's correct, can you copy and paste the new error here?

[safiahn40752198]

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

  at CompangleComplete_fla::MainTimeline/loop()[CompangleComplete_fla.MainTimeline::frame119:181]

The same error.

[nezarov]

Show the code in line number 81 in the loop function

[safiahn40752198]

Nothing in line 81 in loop function.

[nezarov]

If you removed the loop event listener you should not get any error!

Make sure that you're removing the event listener before the gotoAndStop method

if(endpoint==false){

if(player.hitTestObject(back.other)){

endpoint=true;

removeEventListener(Event.ENTER_FRAME, loop); remove first
gotoAndPlay(2, "Scene 9"); then go to another scene

}

[safiahn40752198]

okay. Thank you so much......

I change this code

if(endpoint==false){

if(player.hitTestObject(back.other)){

endpoint=true;

removeEventListener(Event.ENTER_FRAME, loop); remove first
gotoAndPlay(2, "Scene 9"); then go to another scene

}

into the very last of the line of loop function.... and it is work......

Thank you so much!!!!!!!!!!!!!!

[nezarov]

Great, you're welcome.

[safiahn40752198]

https://www.dropbox.com/s/fo99j67axiy6sa5/Mentadak.fla?dl=0

I take out the scene from my project.

[nezarov]

It's working well!

add this code on the line 55, it'll go to the scene 2 after 2 seconds without any error:

var endpoint:Boolean = false;

setTimeout (function (){    endpoint=true;

                            removeEventListener(Event.ENTER_FRAME, loop);

                            gotoAndStop(1,"Scene 2");}, 2000);