raze-gles/source/blood/src/trig.h
2019-09-22 08:39:22 +02:00

46 lines
1.3 KiB
C

//-------------------------------------------------------------------------
/*
Copyright (C) 2010-2019 EDuke32 developers and contributors
Copyright (C) 2019 Nuke.YKT
This file is part of NBlood.
NBlood is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
//-------------------------------------------------------------------------
#pragma once
#include "resource.h"
BEGIN_BLD_NS
extern int costable[2048];
int GetOctant(int x, int y);
void RotateVector(int *dx, int *dy, int nAngle);
void RotatePoint(int *x, int *y, int nAngle, int ox, int oy);
void trigInit(Resource &Res);
inline int Sin(int ang)
{
return costable[(ang - 512) & 2047];
}
inline int Cos(int ang)
{
return costable[ang & 2047];
}
END_BLD_NS