Question

I’m new to Flash and not sure why my new planet object is being considered NULL when I try to set properties to it.
Perhaps I am missing some kind of initialization method I should new the planet in, instead of where I declare my variables?

    public class main extends Sprite {
    private var game_container:game_container_mc;
    private var left,up,right,down:Boolean;
    var pt:Point = new Point(303,301);
    var myArray:Array = [pt,pt,pt];
    private var plan:planet = new planet();

    public function main() {
        plan.loc.x = 3;
        plan.loc.y = 3;
         //...etc, error is here^

Error: “TypeError: Error #1009: Cannot access a property or method of a null object reference.
at main()”

Cheers

Answer 1

package { 
import flash.display.Sprite; 
import flash.geom.Point; 
import Math; 

public class planet extends Sprite { 

             private var kind:int = 0; 
             private var mass:Number; 
             private var atmosphere:int; 
             public var loc:Point; 

Here you can see that loc is null & not initialized. So either set it here itself.

public var loc:Point = new Point(); 

Or later in the main function as:

 var locObj:Point = new Point();
 locObj.x=3;
 locObj.y=3;
 plan.loc=locObj;