Questions about using OOP Classes Inheritence

programming flash
1

PROBLEM SOLVED! THANK YOU: brart, TheCanadian, Krilnon

Intro.(Thank You)
Hello, thank you for taking the time to read this. I really appreciate you taking the time to try to assist me. I’m new to the forum and somewhat new to programming and have run into a mental wall.

Background.(Still Learning)
I have made a simple game for the purpose of furthering my knowledge on programming. It works as I expected but I would like to expand it further while using OOP which I still am having trouble grasping how to implement it. The concept I understand(I think). In the game I create an object and add it too the stage and would like to create more objects of a different type with similar function so converting the object into a super class and a sub class is the next logical step for me.

Problem.(Help)
I need to convert class Original into class Super and Class Sub.

Questions.(???)
[X] What does the Super class constructor need if I don’t call it? OR Do I need to call it?
[X] Do variables pass from Super to Sub?
[X] Do I need to import my Super Class in my Sub class?
[X] Does my pseudo code have any flaws in logic?
[X] 1203: No default constructor found in base class?

Pseudo Code.(//)

public class Original() extends MovieClip
{
    private var a:Number;
    public function Original()
    {
        One(a);
        Two(a);
    }
    private function One(a:Number)
     {
          //Does Something with a
     }
    private function Two(a:Number)
     {
            //Does Something with a
     }
}

…To be turned into…


public class Super() extends MovieClip
{
    public var a:Number;
    public function Super()
    {
    
    }
    public function One(a:Number)
     {
             //Does Something with a
     }
    public function Two(a:Number)
     {
             //Does Something with a
     }
}

public class Sub() extends Super
{
    
    public function Sub()
    {
        One(a);
        Two(a);
    }

}

CODE.(#)

From Engine


...
unitThree = new SubCreature(stage);
...

From “Super”

package com.tisman.foodchain
{
    
    import flash.display.MovieClip;
    import flash.display.Stage
    import flash.events.Event;
    import flash.utils.Timer;
    import flash.events.TimerEvent;
    
    public class Creature extends MovieClip 
    {
        //MISC
        public var stageRef:Stage;
        //Variables For AI
        public var up:Boolean = false;
        public var left:Boolean = false;
        public var right:Boolean = false;
        public var turnTimer:Timer;
        public var canTurn:Boolean = true;
        // Variables for Movement.
        public var speed:Number = 0.3;
        public var rotateSpeed:Number = 2;
        public var vx:Number = 0;
        public var vy:Number = 0;
        public var friction:Number = 0.95;
        public var maxspeed:Number = 1;
        //Variables For Collision
        public var size:Number = 0;
        public var growth:Number = 0;
        public var growthRate:Number = 2;
        public var kills:Number = 0;

        public function Creature(stageRef:Stage) : void
        {
            this.stageRef = stageRef;
            addEventListener(Event.ENTER_FRAME, loop, false, 0, true);
            turnTimer = new Timer(700, 1);
            turnTimer.addEventListener(TimerEvent.TIMER, turnTimerHandler, false, 0, true);
        }
 
        private function loop(e:Event) : void
        {
            if (canTurn == true)
            {
                
                aiDecision(this, Engine.unitList);
                canTurn = false;
                turnTimer.start();
            }
            movement();
            collisions();
        }

From Sub


package com.tisman.foodchain
{
    import flash.display.Stage
    
    public class SubCreature extends Creature
    {
        public function SubCreature(stageRef:Stage): void
        {
            super(stageRef);
        }
        
    }
}