raze-gles/source/blood/src/trig.cpp
Christoph Oelckers 693095bffb - added access wrappers to the two fields of DICTNODE that are accessed from the outside.
The idea here is to completely merge the resource management into the file system so that Blood's DICTNODE is merely an alias to the internal FResourceLump.

A two-tiered resource system is not something I consider worthwile, it made sense to get around Builds crappy cache but in the long term this is not a good solution for a multi-game port to have a resource management system in the backend and another one put over it in the front end, both with their own caching logic that might interfere with each other. Better merge it into one that can handle everything.
2019-10-31 00:50:45 +01:00

87 lines
2.3 KiB
C++

#include "ns.h" // Must come before everything else!
#include "build.h"
#include "pragmas.h"
#include "common_game.h"
//-------------------------------------------------------------------------
/*
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.
*/
//-------------------------------------------------------------------------
#include "build.h"
#include "pragmas.h"
#include "common_game.h"
#include "resource.h"
#include "trig.h"
BEGIN_BLD_NS
int costable[2048];
int OctantTable[8] = { 5, 6, 2, 1, 4, 7, 3, 0 };
int GetOctant(int x, int y)
{
int vc = klabs(x)-klabs(y);
return OctantTable[7-(x<0)-(y<0)*2-(vc<0)*4];
}
void RotateVector(int *dx, int *dy, int nAngle)
{
int ox = *dx;
int oy = *dy;
*dx = dmulscale30r(ox, Cos(nAngle), -oy, Sin(nAngle));
*dy = dmulscale30r(ox, Sin(nAngle), oy, Cos(nAngle));
}
void RotatePoint(int *x, int *y, int nAngle, int ox, int oy)
{
int dx = *x-ox;
int dy = *y-oy;
*x = ox+dmulscale30r(dx, Cos(nAngle), -dy, Sin(nAngle));
*y = oy+dmulscale30r(dx, Sin(nAngle), dy, Cos(nAngle));
}
void trigInit(Resource &Res)
{
DICTNODE *pTable = Res.Lookup("cosine","dat");
if (!pTable)
ThrowError("Cosine table not found");
if (pTable->Size() != 2048)
ThrowError("Cosine table incorrect size");
memcpy(costable, Res.Load(pTable), pTable->Size());
#if B_BIG_ENDIAN == 1
for (int i = 0; i < 512; i++)
{
costable[i] = B_LITTLE32(costable[i]);
}
#endif
costable[512] = 0;
for (int i = 513; i <= 1024; i++)
{
costable[i] = -costable[1024-i];
}
for (int i = 1025; i < 2048; i++)
{
costable[i] = costable[2048 - i];
}
}
END_BLD_NS