From 3bd383baf6a17e734329e1fc677c7e86283db772 Mon Sep 17 00:00:00 2001 From: Chris Xiong Date: Mon, 26 Oct 2015 22:52:36 +0800 Subject: Added support for relative line numbers. Added instructions for, brk and cont. (They are still untested...) Parser code cleanup. Removed garbage output to stderr. Reorganize the repository structure. Updated BLR2 code move it into archive. Added BLR1 files. --- archive/hgehelp/hgevector.cpp | 69 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 archive/hgehelp/hgevector.cpp (limited to 'archive/hgehelp/hgevector.cpp') diff --git a/archive/hgehelp/hgevector.cpp b/archive/hgehelp/hgevector.cpp new file mode 100644 index 0000000..921f7b7 --- /dev/null +++ b/archive/hgehelp/hgevector.cpp @@ -0,0 +1,69 @@ +/* +** Haaf's Game Engine 1.7 +** Copyright (C) 2003-2007, Relish Games +** hge.relishgames.com +** +** hgeVector helper class implementation +*/ + + +#include "hgevector.h" + +float InvSqrt(float x) +{ + union + { + int intPart; + float floatPart; + } convertor; + + convertor.floatPart = x; + convertor.intPart = 0x5f3759df - (convertor.intPart >> 1); + return convertor.floatPart*(1.5f - 0.4999f*x*convertor.floatPart*convertor.floatPart); +} + +/* +hgeVector *hgeVector::Normalize() +{ + float lenRcp; + + lenRcp=sqrtf(Dot(this)); + + if(lenRcp) + { + lenRcp=1.0f/lenRcp; + + x*=lenRcp; + y*=lenRcp; + } + + return this; +} +*/ + +float hgeVector::Angle(const hgeVector *v) const +{ + if(v) + { + hgeVector s=*this, t=*v; + + s.Normalize(); t.Normalize(); + return acosf(s.Dot(&t)); + } + else return atan2f(y, x); +} + +hgeVector *hgeVector::Rotate(float a) +{ + hgeVector v; + + v.x=x*cosf(a) - y*sinf(a); + v.y=x*sinf(a) + y*cosf(a); + + x=v.x; y=v.y; + + return this; +} + + + -- cgit v1.2.3