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# osgcc/osgcc5-WilliamWallaceCastleDefender

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 #Vector from math import sin, cos, atan, hypot # The quick way to know how big the pie is PI = 3.141592653589793238462643383 TwoPI = PI * 2.0 HalfPI = PI * 0.5 OneAndHalfPI = PI * 1.5 # new math function def direction(x, y): """Return the direction component of a vector (in radians), given cartesian coordinates. """ if x > 0: if y >= 0: return atan(y / x) else: return atan(y / x) + TwoPI elif x == 0: if y > 0: return HalfPI elif y == 0: return 0 else: return OneAndHalfPI else: return atan(y / x) + PI class Vector: """Store a vector in cartesian coordinates.""" def __init__(self,x,y): f = 0.0 mag = 0.0 self.x = x self.y = y def add(self, b): """Add b to self, where b is another Vector.""" self.x += b.x self.y += b.y def heading(self): """Return the direction of the Vector in radians.""" return direction(self.x, self.y) def mag(self): """Return the magnitude of the Vector.""" return hypot(self.x, self.y)
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