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DarkBASIC Professional Discussion / a simple challenge

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noobnerd
15
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Joined: 30th Nov 2010
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Posted: 7th May 2011 00:32
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whats the fastest code you can make that calculates the angle of a line from the center of the screen to the mouse x,y ? (where angle zero is a line straight upwards from center) the winner might get a carrot or similar
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Quel
17
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Joined: 13th Mar 2009
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Posted: 7th May 2011 02:31
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sync on
backdrop on

do

x1=screen width()/2
y1=screen height()/2
dot x1,y1

x2=mousex()
y2=mousey()

angle=atanfull(x1-x2,y1-y2)

set cursor 10,10:print angle
sync
loop

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Neuro Fuzzy
19
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Joined: 11th Jun 2007
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Posted: 7th May 2011 05:15 Edited at: 7th May 2011 05:16
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I think you'd also have to negate the angle, and add 90 to it, to get the angle difference of something pointing upwards from the center.

(errm, well, you don't have to negate it.)


Tell me if there's a broken link to images in a thread I post, and I'll fix 'em.
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