I don't understand why only run it once
« How do I...?
- Login to post comments
liu peng
Member
March 07, 2012
[scratchblocks]
when green flag clicked
repeat (10)
set [tiaosanX] to (250)
forever if <(tiaosanX) > [-300]>
change [tiaosanX] by <pick random(-3)to(-1) >
end
end
[/scratchblocks]
I 'd like to repeat 10 times
but I don't understand why only run it once
Complete project is here :
parachuting跳伞
and ,this can repeat 10 times,as follows:
[scratchblocks]
when green flag clicked
repeat (10)
set [tiaosanX] to (250)
repeat until <(tiaosanX) < [-300]>
change [tiaosanX] by <pick random(-3)to(-1) >
end
end
[/scratchblocks]
Who can help me ?scratch.mit.edu/forums/viewtopic.phpThanks!
The internal loop
forever if <(tiaosanX) > [-300]>
cannot be repeated 10 times as this is an infinite loop (it will be repeated every time that tiaosanX is greater than -300) and it will just wait forever for the condition to be verified.
To leave the loop as soon as tiaosanX is smaller than -300 you have to replace it with a finite loop, that is a <repeat until> loop in which the condition is reversed:
repeat until <(tiaosanX) < [-300]>