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November 17th, 2013, 06:45 AM   #1
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Find angle to specific point given random (x,y) coordinate

I have the following issue. It's probably elementary level maths but I just can't figure it out!

Given the following square, I need to find the angle to the bottom left corner from any given point on the map (denoted by the black squares). I always 'begin' facing directly North.

http://i.stack.imgur.com/ijHnX.png

I tried using 225 as the constant direction but sometimes I hit the boundary (wall) before I get to (0,0) so it must be dynamic... It must alter based on where I start.

Right????
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