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Index › Programming Questions & Help › Syntax Questions › random() question

echo+++ YaBB Newbies Offline Posts: 3	random() question Apr 11th, 2008, 1:22am   Hi, how would I go about producing random numbers between ..say..  -10  to -5  AND 5 to 10 - rather than between -10 and 10.  The program sketch I am working on is a shape that bounces off walls at random speeds, and I'd like to remove the slower crawls if possible. J

davbol Senior Member Offline Posts: 263	Re: random() question Reply #1 - Apr 11th, 2008, 2:46am   two calls to random() should do it... 1) by flipping the sign half the time: float n = random(5,10); if (random(1)<0.5) n = -n; 2) or flip by multiplying by random -1 or 1: float n = random(5,10) * (floor(random(2))*2-1);

echo+++ YaBB Newbies Offline Posts: 3	Re: random() question Reply #2 - Apr 12th, 2008, 12:19am   Thanks