Messages

1

Old Bugs (3.x) / Re: Null Object Reference - Detective Advice

« on: March 18, 2014, 06:12:01 pm »

Thank you for the great resource Photon!  I might have found the issue ... My health bar is set up in a drawing event to change the animation frame based upon a health point attribute.  Likely during one of my "if actor is alive" sweeps, I had placed it within the drawing event as shown.  I removed the actor is alive if statement and it seems to have solved the issue.

2

Old Bugs (3.x) / Re: Null Object Reference - Detective Advice

« on: March 18, 2014, 03:27:02 pm »

Thanks for the responses.  I do have many events pointing to the actor.  I've been working as Gardenia suggested for a couple months now, toggling behaviors and enclosing everything I can find in "if actor is alive".  So far no luck finding the culprit, which has made me wonder if there is a technique I should know to use the error text to pinpoint the problem. 

3

Old Bugs (3.x) / Null Object Reference - Detective Advice

« on: March 18, 2014, 11:48:59 am »

Hi everyone!  This is my first post to the forum, mainly because I'm still learning Stencyl and don't yet have much experience to offer, but I have been working with Stencyl for 9-10 months now and have read many of your posts and helpful answers.  I've run in to an issue I just can't seem to solve and am hoping someone might be able to educate me a bit.  The issue is the fairly common "Error #1009: Cannot access a property or method of a null object reference".  This is tied directly to, and happens immediately after, the player in my game is killed.  I understand that the error is caused because something is trying to access an actor after its been killed ... but what I don't know is how to utilize the error text to help find the offending code.  Is that possible?  If not, is there another technique I can learn that will allow me to track down and correct these errors?  The error text I'm receiving is as follows:

TypeError: Error #1009: Cannot access a property or method of a null object reference.
   at MethodInfo-4911()[Source/scripts/SceneEvents_14.hx:547]
   at com.stencyl::Engine$/invokeListeners4()[C:\Program Files (x86)\Stencyl\plaf\haxe\lib/stencyl/1,00/com/stencyl/Engine.hx:3907]
   at com.stencyl::Engine/draw()[C:\Program Files (x86)\Stencyl\plaf\haxe\lib/stencyl/1,00/com/stencyl/Engine.hx:3072]
   at com.stencyl::Engine/postUpdate()[C:\Program Files (x86)\Stencyl\plaf\haxe\lib/stencyl/1,00/com/stencyl/Engine.hx:2644]
   at com.stencyl::Engine/onUpdate()[C:\Program Files (x86)\Stencyl\plaf\haxe\lib/stencyl/1,00/com/stencyl/Engine.hx:2578]

Thanks in advance for your help!
Jake