Skip to main content
H
HeyInsanity
Participant
August 5, 2017
Answered

Can't Make a Variable, please help!

  • August 5, 2017
  • 1 reply
  • 452 views

So i am attempting to make a variable in my main code file, for a character. The problem is that I have a code file for the character, so it gives me an error whenever i attempt to make a variable.

Code to make the variable:

public var Char:character = new character();

Error I am receiving:

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

  at character()

  at main()

This topic has been closed for replies.
Correct answer HeyInsanity

If it's still a problem can you post a zip online of the files, for me to try?


I figured it out, thank you very much. I was accidentally adding my loop twice in my character file.

1 reply

Colin Holgate
Colin Holgate
Inspiring
August 5, 2017

In Publish Settings you can check the box that says Permit Debugging, that would then give you the line number where the problem occurred.

By convention, Class files start with a capital letter. It would make more sense if your Class was Character, and the line would read:

public var char:Character = new Character();

But that wouldn't explain the error. The error message looks like the problem may be inside the character class. What does that code look like?

H
HeyInsanityAuthor
Participant
August 5, 2017

The entire code file:

package

{

  import flash.events.*;

  import flash.display.Stage;

  import flash.display.MovieClip;

  public class character extends MovieClip

  {

  // global variables go here

  private var _root;

  private var stepDown:Number = 1;

  private var stepUp:Number = 1;

  private var stepLeft:Number = 1;

  private var stepRight:Number = 1;

  private var addyStepDown:Number = 1;

  private var addyStepUp:Number = 1;

  private var addyStepLeft:Number = 1;

  private var addyStepRight:Number = 1;

  private var keyCode:Number;

  private var speed:Number = 6;

  private var damage:Number = 4;

  private var wisdom:Number = 1;

  public function character()

  {

  //program initialization code goes here

  addEventListener(Event.ADDED, link);

  stepDown = 0;

  stepUp = 0;

  stepLeft = 0;

  stepRight = 0;

  addyStepDown = 0;

  addyStepUp = 0;

  addyStepLeft = 0;

  addyStepRight = 0;

  gotoAndStop(1);

  stage.addEventListener(Event.ENTER_FRAME, loop);

  }

  private function link(e:Event)

  {

  addEventListener(Event.ENTER_FRAME, loop);

  _root = (root as MovieClip);

  _root.stage.addEventListener(KeyboardEvent.KEY_DOWN, keyPressed);

  _root.stage.addEventListener(KeyboardEvent.KEY_UP, keyLetGo);

  }

  private function keyLetGo(e:KeyboardEvent)

  {

  if (keyCode == 40)

  {

  stepDown = 1;

  }

  if (keyCode == 38)

  {

  stepUp = 1;

  }

  if (keyCode == 37)

  {

  stepLeft = 1;

  }

  if (keyCode == 39)

  {

  stepRight = 1;

  }

  }

  private function keyPressed(e:KeyboardEvent)

  {

  keyCode = e.keyCode;

  if (keyCode==40 /*DOWN*/)

  {

  y +=  speed;

  stepDown +=  1;

  stepUp = 0;

  stepLeft = 0;

  stepRight = 0;

  if (stepDown == 2)

  {

  gotoAndStop(2);

  }

  if (stepDown == 3)

  {

  gotoAndStop(3);

  }

  if (stepDown == 4)

  {

  gotoAndStop(1);

  stepDown = 1;

  }

  }

  if (keyCode==38 /*UP*/)

  {

  gotoAndStop(4);

  y -=  speed;

  stepUp +=  1;

  stepDown = 0;

  stepLeft = 0;

  stepRight = 0;

  if (stepUp == 2)

  {

  this.gotoAndStop(5);

  }

  if (stepUp == 3)

  {

  gotoAndStop(6);

  }

  if (stepUp == 4)

  {

  gotoAndStop(4);

  stepUp = 1;

  }

  }

  if (keyCode==37 /*LEFT*/)

  {

  stepLeft +=  1;

  stepDown = 0;

  stepUp = 0;

  stepRight = 0;

  if (stepLeft == 2)

  {

  this.gotoAndStop(8);

  }

  if (stepLeft == 3)

  {

  gotoAndStop(9);

  }

  if (stepLeft == 4)

  {

  gotoAndStop(7);

  stepLeft = 1;

  }

  x -=  speed;

  }

  if (keyCode==39 /*RIGHT*/)

  {

  x +=  speed;

  stepRight +=  1;

  stepDown = 0;

  stepLeft = 0;

  stepUp = 0;

  if (stepRight == 2)

  {

  this.gotoAndStop(11);

  }

  if (stepRight == 3)

  {

  gotoAndStop(12);

  }

  if (stepRight == 4)

  {

  gotoAndStop(10);

  stepRight = 1;

  }

  }

  if (keyCode == 16 && hitTestObject(_root.addy)==true)

  {

  _root.addyTalkBox.textBox.text = "Hello Vyvan";

  _root.addyTalkBox.nameBox.text = "Addy";

  stage.addChild(_root.addyTalkBox);

  _root.addyTalkBox.x = 275;

  _root.addyTalkBox.y = 350;

  _root.addyTalkBox.addyOpt.visible = false;

  }

  }

  private function loop(e:Event)

  {

  //code that needs to update constantly goes here

  if (_root.compAddy == true)

  {

  if (this.y + 50 < _root.addy.y)

  {

  _root.addy.y -=  _root.addySPD;

  addyStepUp +=  1;

  addyStepDown = 0;

  addyStepLeft = 0;

  addyStepRight = 0;

  if (addyStepUp == 2)

  {

  _root.addy.gotoAndStop(5);

  }

  if (addyStepUp == 3)

  {

  _root.addy.gotoAndStop(6);

  }

  if (addyStepUp == 4)

  {

  _root.addy.gotoAndStop(4);

  addyStepUp = 1;

  }

  }

  if (this.y - 50 > _root.addy.y)

  {

  _root.addy.y +=  _root.addySPD;

  addyStepDown +=  1;

  addyStepUp = 0;

  addyStepLeft = 0;

  addyStepRight = 0;

  if (addyStepDown == 2)

  {

  _root.addy.gotoAndStop(2);

  }

  if (addyStepDown == 3)

  {

  _root.addy.gotoAndStop(3);

  }

  if (addyStepDown == 4)

  {

  _root.addy.gotoAndStop(1);

  addyStepDown = 1;

  }

  }

  if (this.x + 50 < _root.addy.x)

  {

  _root.addy.x -=  _root.addySPD;

  addyStepLeft +=  1;

  addyStepDown = 0;

  addyStepUp = 0;

  addyStepRight = 0;

  if (addyStepLeft == 2)

  {

  _root.addy.gotoAndStop(8);

  }

  if (addyStepLeft == 3)

  {

  _root.addy.gotoAndStop(9);

  }

  if (addyStepLeft == 4)

  {

  _root.addy.gotoAndStop(7);

  addyStepLeft = 1;

  }

  }

  if (this.x - 50 > _root.addy.x)

  {

  _root.addy.x +=  _root.addySPD;

  addyStepRight +=  1;

  addyStepDown = 0;

  addyStepLeft = 0;

  addyStepUp = 0;

  if (addyStepRight == 2)

  {

  _root.addy.gotoAndStop(11);

  }

  if (addyStepRight == 3)

  {

  _root.addy.gotoAndStop(12);

  }

  if (addyStepRight == 4)

  {

  _root.addy.gotoAndStop(10);

  addyStepRight = 1;

  }

  }

  /*if (this.y  > _root.Char.y)

  {

  this.y -=  speed;

  }

  if (this.x  < _root.Char.x)

  {

  this.x +=  speed;

  this.scaleX =1;

  }

  if (this.x > _root.Char.x)

  {

  this.x -=  speed;

  this.scaleX =-1

  }*/

  }

  if (stepDown == 1)

  {

  gotoAndStop(1);

  }

  if (stepUp == 1)

  {

  gotoAndStop(4);

  }

  if (stepLeft == 1)

  {

  gotoAndStop(7);

  }

  if (stepRight == 1)

  {

  gotoAndStop(10);

  }

  }

  }

}

Colin Holgate
Colin Holgate
Inspiring
August 5, 2017

root might be stage, which wouldn't be movieclip. Could you work this way?:

public var Char:character = new character(this);

and:

  public function character(mc:*)

  {

_root =  mc as MovieClip;

Terms & ConditionsAccessibility statement
Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices