1 files changed, 54 insertions, 0 deletions
diff --git a/archive/include/hgevector.h b/archive/include/hgevector.h
new file mode 100644
index 0000000..b86bd01
--- /dev/null
+++ b/archive/include/hgevector.h
@@ -0,0 +1,54 @@
+/*
+** Haaf's Game Engine 1.7
+** Copyright (C) 2003-2007, Relish Games
+** hge.relishgames.com
+**
+** hgeVector helper class
+*/
+
+
+#ifndef HGEVECTOR_H
+#define HGEVECTOR_H
+
+#include <math.h>
+
+/*
+** Fast 1.0/sqrtf(float) routine
+*/
+float InvSqrt(float x);
+
+class hgeVector
+{
+public:
+	float	x,y;
+
+	hgeVector(float _x, float _y)	{ x=_x; y=_y; }
+	hgeVector()						{ x=0; y=0; }
+
+	hgeVector	operator-  ()					const { return hgeVector(-x, -y);		}
+	hgeVector	operator-  (const hgeVector &v) const { return hgeVector(x-v.x, y-v.y); }
+	hgeVector	operator+  (const hgeVector &v) const { return hgeVector(x+v.x, y+v.y); }
+	hgeVector&	operator-= (const hgeVector &v)		  { x-=v.x; y-=v.y; return *this;	}
+	hgeVector&	operator+= (const hgeVector &v)		  { x+=v.x; y+=v.y; return *this;	}
+	bool		operator== (const hgeVector &v)	const { return (x==v.x && y==v.y);		}
+	bool		operator!= (const hgeVector &v)	const { return (x!=v.x || y!=v.y);		}
+
+	hgeVector	operator/  (const float scalar)	const { return hgeVector(x/scalar, y/scalar); }
+	hgeVector	operator*  (const float scalar) const { return hgeVector(x*scalar, y*scalar); }
+	hgeVector&	operator*= (const float scalar)		  { x*=scalar; y*=scalar; return *this;   }
+
+	float		Dot(const hgeVector *v) const { return x*v->x + y*v->y; }
+	float		Length() const { return sqrtf(Dot(this)); }
+	float		Angle(const hgeVector *v = 0) const;
+	
+	void		Clamp(const float max) { if(Length() > max)	{ Normalize(); x *= max; y *= max; } }
+	hgeVector*	Normalize() { float rc=InvSqrt(Dot(this)); x*=rc; y*=rc; return this; }
+	hgeVector*	Rotate(float a);
+};
+
+inline hgeVector operator* (const float s, const hgeVector &v)		{ return v*s; }
+inline float	 operator^ (const hgeVector &v, const hgeVector &u) { return v.Angle(&u); }
+inline float	 operator% (const hgeVector &v, const hgeVector &u) { return v.Dot(&u); }
+
+
+#endif