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QuantumChicken
Participating Frequently
October 30, 2015
Answered

Collision detect not working

  • October 30, 2015
  • 2 replies
  • 527 views

I have created a Class in code called Battery and am adding it inside a function named 'Clone'. Battery is derived from a base class with a filename of Components.as. Here's where I am adding battery inside a function named 'clone':

var ComponentRef:Class = getDefinitionByName("Battery") as Class;

  var instance:object = new ComponentRef();

  addChild(DisplayObject(instance));

  instance.x = 500;

  instance.y = 300;

  instance.compName = "Battery";

  instance.amperage = 20;

  instance.partNumber = "BA12345";

I also have a movie clip with an instance name of 'negativeProbe' that I add an event listener to:

negativeProbe.addEventListener(Event.ENTER_FRAME, detectedColl);

this brings me to the detectedColl function where I am trying to do the collision detection:

var battery:Battery = new Battery();

  if (battery.hitTestObject(negativeProbe)) {

  trace("Collision!!!");

Trace never registers a hit. I don't get an error, but no hit is ever registered. What am I doing wrong here?

This topic has been closed for replies.
Correct answer nezarov

Here you've added the object "instance" to the stage

  addChild(DisplayObject(instance));

but this object not added!

var battery:Battery = new Battery();

so you have an object in name "battery" but it's not on the stage and it'll never hit another object unless you add it.

2 replies

N
nezarovCorrect answer
Inspiring
October 30, 2015

Here you've added the object "instance" to the stage

  addChild(DisplayObject(instance));

but this object not added!

var battery:Battery = new Battery();

so you have an object in name "battery" but it's not on the stage and it'll never hit another object unless you add it.

Q
QuantumChickenAuthor
Participating Frequently
October 30, 2015

Ohhhh I think I see... I need to do an addChild on battery... I'll try that now.

Q
QuantumChickenAuthor
Participating Frequently
October 30, 2015

That did work. Thank you again!

    N
    nezarov
    Inspiring
    October 30, 2015

    Try to change the variable name "instance" make it "battery"

    or change the "battery" in if statement to "instance":

    if (instance.hitTestObject(negativeProbe)) {

      trace("Collision!!!");

    }

    Q
    QuantumChickenAuthor
    Participating Frequently
    October 30, 2015

    If I change instance to Battery I get this error:

    Access of possibly undefined property x through a reference with static type Class.


    If I change battery in the if statement to instance I get an error saying instance wasn't found or referenced, so I added 'instance' to the previous line:


    var instance:Battery = new Battery();

      if (instance.hitTestObject(negativeProbe)) {


    No error but still doesn't detect a collision. I'm stumped on this one. :\

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