Tricksy little angle limiting thing.

Local largeangle:Int
Local limitedangle:Int

For largeangle = -900 To 900 Step 10
	limitedangle = (360-(-largeangle Mod 360)) Mod 360
	Print limitedangle
Next

Is the above the best way to limit a potentially large angle to return only a 'real' angle in the range 0-360 degrees?

I need to reference back to an element in an array based on a collision angle and was a little bit stumped until I thought it through and came up with the above code. I don't know if I went down the wrong path though..?

limitedangle=(largeangle+1080) Mod 360

?

limitedangle = largeangle Mod 360

no?

*edit*
wait. i see that it returns a negative when its negative.
however, you could just do:
limitedangle = ((largeangle Mod 360) + 360) Mod 360

Whats wrong with Abs()?

All you need to do is add a multiple of 360 to the number, to make sure it is always in a positive range, then just wrap it using one Modulo, it will give the right results. Again:

LimitedAngle=(LargeAngle+1080) Mod 360

You can't use Abs because it inverts the negative numbers. -10 becomes plus 10 instead of 350 degrees.

AngelDaniel: That works OK until LargeAngle goes less than 1080 :-/

I'll stick with the 2x Mod solution for now and see if there is some way of self-limiting largeangle.

Thanks though guys, I did need to know I was on the right track at least :D

LargeAngle shouldn't go less than 1080 in your example because you said it only ranges from -900 to +900.

You can easily fix it, if you're using a bigger range, but just using ANY larger multiple of 360.