Hey, If you ever have any questions, ask it in 'All about Scratch'. There you will get more results. Anyway...
[blocks]
If you don't want to hold and shoot:
<forever>
<if> <mouse down?>
<wait until> <not> <mouse down?> >>
<[ put whatever you want... whatever you do to shoot ]>
<end>
<end>
OR(I recommend)
<forever>
<if> <mouse down?>
<[ put whatever you want... whatever you do to shoot ]>
<wait until> <not> <mouse down?> >>
<end>
<end>
[/blocks]
Do whichever you want. I recommend the second thing.
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