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150 lines
3.8 KiB
C++
150 lines
3.8 KiB
C++
//-------------------------------------------------------------------------
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/*
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Copyright (C) 1996, 2003 - 3D Realms Entertainment
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Copyright (C) 2000, 2003 - Matt Saettler (EDuke Enhancements)
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Copyright (C) 2020 - Christoph Oelckers
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This file is part of Enhanced Duke Nukem 3D version 1.5 - Atomic Edition
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Duke Nukem 3D is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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aint with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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Original Source: 1996 - Todd Replogle
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Prepared for public release: 03/21/2003 - Charlie Wiederhold, 3D Realms
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EDuke enhancements integrated: 04/13/2003 - Matt Saettler
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Note: EDuke source was in transition. Changes are in-progress in the
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source as it is released.
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*/
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//-------------------------------------------------------------------------
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#include "ns.h" // Must come before everything else!
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#include "global.h"
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BEGIN_DUKE_NS
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#define MAXINTERPOLATIONS MAXSPRITES
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int32_t numinterpolations;
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int32_t g_interpolationLock;
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int32_t oldipos[MAXINTERPOLATIONS];
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int32_t *curipos[MAXINTERPOLATIONS];
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int32_t bakipos[MAXINTERPOLATIONS];
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void updateinterpolations() //Stick at beginning of domovethings
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{
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int i;
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for(i=numinterpolations-1;i>=0;i--) oldipos[i] = *curipos[i];
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}
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void setinterpolation(int *posptr)
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{
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int i;
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if (numinterpolations >= MAXINTERPOLATIONS) return;
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for(i=numinterpolations-1;i>=0;i--)
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if (curipos[i] == posptr) return;
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curipos[numinterpolations] = posptr;
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oldipos[numinterpolations] = *posptr;
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numinterpolations++;
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}
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void stopinterpolation(int *posptr)
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{
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int i;
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for(i=numinterpolations-1;i>=0;i--)
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if (curipos[i] == posptr)
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{
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numinterpolations--;
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oldipos[i] = oldipos[numinterpolations];
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bakipos[i] = bakipos[numinterpolations];
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curipos[i] = curipos[numinterpolations];
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}
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}
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void dointerpolations(int smoothratio) //Stick at beginning of drawscreen
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{
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int i, j, odelta, ndelta;
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ndelta = 0; j = 0;
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for(i=numinterpolations-1;i>=0;i--)
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{
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bakipos[i] = *curipos[i];
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odelta = ndelta; ndelta = (*curipos[i])-oldipos[i];
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if (odelta != ndelta) j = mulscale16(ndelta,smoothratio);
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*curipos[i] = oldipos[i]+j;
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}
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}
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void restoreinterpolations() //Stick at end of drawscreen
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{
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int i;
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for(i=numinterpolations-1;i>=0;i--) *curipos[i] = bakipos[i];
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}
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void setsectinterpolate(int i)
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{
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int j, k, startwall,endwall;
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auto sect = §or[sprite[i].sectnum];
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startwall = sect->wallptr;
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endwall = startwall+sect->wallnum;
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for(j=startwall;j<endwall;j++)
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{
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setinterpolation(&wall[j].x);
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setinterpolation(&wall[j].y);
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k = wall[j].nextwall;
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if(k >= 0)
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{
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setinterpolation(&wall[k].x);
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setinterpolation(&wall[k].y);
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k = wall[k].point2;
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setinterpolation(&wall[k].x);
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setinterpolation(&wall[k].y);
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}
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}
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}
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void clearsectinterpolate(short i)
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{
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short j,startwall,endwall;
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auto sect = §or[sprite[i].sectnum];
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startwall = sect->wallptr;
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endwall = startwall + sect->wallnum;
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for(j=startwall;j<endwall;j++)
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{
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stopinterpolation(&wall[j].x);
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stopinterpolation(&wall[j].y);
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if(wall[j].nextwall >= 0)
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{
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stopinterpolation(&wall[wall[j].nextwall].x);
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stopinterpolation(&wall[wall[j].nextwall].y);
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}
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}
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}
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END_DUKE_NS
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