Question about Global values

[Hordolur]

I'm working on a space shooter
I have setup an ammo system, so you can only shoot your weapon when you have ammo

I have setup Alterable Value to Global Value C
I have Ammo Counter to Global Value C
I have when you pick up an ammo pack you add 10 to Alterable Value and Ammo Counter

When you shoot your weapon subtract 1 from counter and Alterable value

you can only shoot when there is greater then zero in Alterable Value

I have 3 ammo packs, 30 shoots total for testing
I can shoot down to 10 and then can not shoot any more
sometimes the counter will count down when shooting then back up then down
IE 20,19,28,17,16,15,18,17,16,15,13,10 and will not fire again

I will upload the code if anyone can help me out with this, not sure what I'm doing wrong.

I did have it all setup to just global value C however that wasn't working at all.

Code: http://wilkinsp.home.comcast.net/~wilkinsp/Application(1).mfa

[DavidN]

Thank you for attaching the file - it makes answering these so much easier!

It took me a while to actually see the effect, but it seems to be that the actual display of the counter is causing the problem - the debugger thinks the counter is at the right value, but it still displays the "1" to the side when it drops below 10 after being above it (until the playfield is scrolled). And Display as Background is off, too... so I'm at a loss to explain why this happens.

I would, however, try and consolidate the "ammo counter" into one place. At the moment you have to update it in Alterable Value A of the player, Global Value C and the ammo counter, while you could just keep it in Global Value C and have the others always set themselves to this value. You can also rename globals/alterables to make their meaning clearer.

[Hordolur]

Thanks I'll look into that and renaming them

Also the Crystal Tower game is very cool

[Hordolur]

okies corrected it to where is is just global value C
however same error is happening

I might try to rebuild it from the start

[Hordolur]

I corrected the issue, thanks all
I didn't have Save Background checked and it was causing the 1 to say looking like it was miscounting