Thanks for the advice and I don't take offence.
I did start making the game in the order you posted but when I run
into problems I try and solve them in one way which causes a bigger error...
Obviously I am a beginner I will delete a lot of my code to try and fix the problems.
The one thing I would like to say is I did follow your instructions when I started.
I just created an empty level.
Then the tank
Then one invader
Then the ability to kill invaders
Then a bunch more invaders
I am assuming this is where I messed up so i'll go back to that stage and change destruction to movement.
The only reason I don't think this idea will work completely
is that one invader works!
If I change nothing but add a second invader I get my weird errors.
Thats why I asked the forum instead of trying more debugging.
I just don't get it. Thanks for the help and all the suggestions.
I'm going to spend some time deleting and fixing up my code but eventually I'll try and reply again once I've gotten to a later step
if only for the reason of telling you that I got it working because of your help.
Thanks again
rtsgamer706