mirror of https://github.com/ZDoom/raze-gles.git
115 lines
3.1 KiB
C++
115 lines
3.1 KiB
C++
//-------------------------------------------------------------------------
|
|
/*
|
|
Copyright (C) 1997, 2005 - 3D Realms Entertainment
|
|
|
|
This file is part of Shadow Warrior version 1.2
|
|
|
|
Shadow Warrior is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
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.
|
|
|
|
Original Source: 1997 - Frank Maddin and Jim Norwood
|
|
Prepared for public release: 03/28/2005 - Charlie Wiederhold, 3D Realms
|
|
*/
|
|
//-------------------------------------------------------------------------
|
|
|
|
#include "ns.h"
|
|
|
|
#include "compat.h"
|
|
#include "pragmas.h"
|
|
|
|
#include "interp.h"
|
|
|
|
BEGIN_SW_NS
|
|
|
|
short short_numinterpolations = 0;
|
|
short short_oldipos[SHORT_MAXINTERPOLATIONS];
|
|
short short_bakipos[SHORT_MAXINTERPOLATIONS];
|
|
short *short_curipos[SHORT_MAXINTERPOLATIONS];
|
|
|
|
void short_setinterpolation(short *posptr)
|
|
{
|
|
int i;
|
|
|
|
if (short_numinterpolations >= SHORT_MAXINTERPOLATIONS)
|
|
return;
|
|
|
|
for (i = short_numinterpolations - 1; i >= 0; i--)
|
|
{
|
|
if (short_curipos[i] == posptr)
|
|
return;
|
|
}
|
|
|
|
short_curipos[short_numinterpolations] = posptr;
|
|
short_oldipos[short_numinterpolations] = *posptr;
|
|
short_numinterpolations++;
|
|
}
|
|
|
|
void short_stopinterpolation(short *posptr)
|
|
{
|
|
int i;
|
|
|
|
for (i = short_numinterpolations - 1; i >= 0; i--)
|
|
{
|
|
if (short_curipos[i] == posptr)
|
|
{
|
|
short_numinterpolations--;
|
|
short_oldipos[i] = short_oldipos[short_numinterpolations];
|
|
short_bakipos[i] = short_bakipos[short_numinterpolations];
|
|
short_curipos[i] = short_curipos[short_numinterpolations];
|
|
}
|
|
}
|
|
}
|
|
|
|
void short_updateinterpolations(void) // Stick at beginning of domovethings
|
|
{
|
|
int i;
|
|
|
|
for (i = short_numinterpolations - 1; i >= 0; i--)
|
|
short_oldipos[i] = *short_curipos[i];
|
|
}
|
|
|
|
// must call restore for every do interpolations
|
|
// make sure you don't exit
|
|
void short_dointerpolations(int smoothratio) // Stick at beginning of drawscreen
|
|
{
|
|
int i, j, odelta, ndelta;
|
|
|
|
ndelta = 0;
|
|
j = 0;
|
|
|
|
for (i = short_numinterpolations - 1; i >= 0; i--)
|
|
{
|
|
short_bakipos[i] = *short_curipos[i];
|
|
|
|
odelta = ndelta;
|
|
ndelta = (*short_curipos[i]) - short_oldipos[i];
|
|
|
|
if (odelta != ndelta)
|
|
j = mulscale16(ndelta, smoothratio);
|
|
|
|
*short_curipos[i] = short_oldipos[i] + j;
|
|
}
|
|
}
|
|
|
|
void short_restoreinterpolations(void) // Stick at end of drawscreen
|
|
{
|
|
int i;
|
|
|
|
for (i = short_numinterpolations - 1; i >= 0; i--)
|
|
*short_curipos[i] = short_bakipos[i];
|
|
}
|
|
|
|
END_SW_NS
|