I just downloaded scratch today and well it's a very good program. So far I have been playing around with it and I got to a point where I couldn't get me guy to look the other direction when I pressed the left arrow. Any suggestions?
Here's the game URL: http://scratch.mit.edu/projects/J053PH/9629
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Instead of moving -10 steps and changing to a left-facing costume, it would be a lot simpler to change the sprite's direction to -90 when left arrow is pressed and move 10 steps. Since you have your sprite set to flip it will point in the right direction when you change its direction.
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The "when arrow clicked" block makes the forever-if loop unnecessary.
You'll avoid a lot of race conditions and other problems if you avoid forever constructs as much as you can. All forever loops should have a wait in them.
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