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Copyright (C) 1994-1995 Apogee Software, Ltd.
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This program 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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along 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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#define LIGHTNINGLEVEL 4
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#define MINLIGHTNINGLEVEL 2
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#define MAXLIGHTNINGLEVEL 10
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=============================================================================
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=============================================================================
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boolean lightning=false;
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longword heightnumerator;
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byte * playermaps[MAXPLAYERCOLORS];
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short pixelangle[MAXVIEWWIDTH];
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byte gammatable[GAMMAENTRIES];
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int focalwidth=FOCALWIDTH;
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byte uniformcolors[MAXPLAYERCOLORS]={
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byte mapmasks1[4][9] = {
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{1 ,3 ,7 ,15,15,15,15,15,15},
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{2 ,6 ,14,14,14,14,14,14,14},
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{4 ,12,12,12,12,12,12,12,12},
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{8 ,8 ,8 ,8 ,8 ,8 ,8 ,8 ,8} };
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byte mapmasks2[4][9] = {
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{0 ,0 ,0 ,0 ,1 ,3 ,7 ,15,15},
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{0 ,0 ,0 ,1 ,3 ,7 ,15,15,15},
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{0 ,0 ,1 ,3 ,7 ,15,15,15,15},
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{0 ,1 ,3 ,7 ,15,15,15,15,15} };
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byte mapmasks3[4][9] = {
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{0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,1},
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{0 ,0 ,0 ,0 ,0 ,0 ,0 ,1 ,3},
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{0 ,0 ,0 ,0 ,0 ,0 ,1 ,3 ,7},
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{0 ,0 ,0 ,0 ,0 ,1 ,3 ,7 ,15} };
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=============================================================================
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=============================================================================
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static char *YourComputerSucksString = "Buy a 486! :)";
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static int viewsizes[MAXVIEWSIZES*2]={ 80,48,
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static int ColorMapLoaded=0;
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static int lightningtime=0;
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static int lightningdelta=0;
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static int lightningdistance=0;
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static int lightningsoundtime=0;
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static boolean periodic=false;
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static int periodictime=0;
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void SetViewDelta ( void );
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void UpdatePeriodicLighting (void);
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void ResetFocalWidth ( void )
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focalwidth=FOCALWIDTH;
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void ChangeFocalWidth ( int amount )
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focalwidth=FOCALWIDTH+amount;
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void SetViewDelta ( void )
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// calculate scale value for vertical height calculations
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// and sprite x calculations
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scale = (centerx*focalwidth)/160;
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// divide heightnumerator by a posts distance to get the posts height for
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// the heightbuffer. The pixel height is height>>HEIGHTFRACTION
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heightnumerator = (((focalwidth/10)*centerx*4096)<<HEIGHTFRACTION);
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void CalcProjection ( void )
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// Already being called in ResetFocalWidth
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// load in tables file
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//Hey, isn't this stuff already loaded in?
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//Why don't we make this a lump?
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table=W_CacheLumpName("tables",PU_STATIC, CvtFixme, 1);
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memcpy(&length,ptr,sizeof(int));
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SwapIntelLong((long *)&length);
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pangle=SafeMalloc(length*sizeof(int));
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memcpy(pangle,ptr,length*sizeof(int));
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frac=((length*65536/centerx))>>1;
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for (i=0;i<centerx;i++)
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// start 1/2 pixel over, so viewangle bisects two middle pixels
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intang=pangle[frac>>16];
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SwapIntelLong(&intang);
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pixelangle[centerx-1-i] =(short) intang;
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pixelangle[centerx+i] =(short) -intang;
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frac+=(length*65536/centerx);
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table=W_CacheLumpName("tables",PU_CACHE, CvtFixme, 1);
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==========================
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==========================
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if ((size<0) || (size>=MAXVIEWSIZES))
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Error("Illegal screen size = %ld\n",size);
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viewwidth = viewsizes[ size << 1 ]; // must be divisable by 16
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viewheight = viewsizes[ ( size << 1 ) + 1 ]; // must be even
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// Only keep the kills flag
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StatusBar &= ~( BOTTOM_STATUS_BAR | TOP_STATUS_BAR |
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STATUS_PLAYER_STATS );
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// Account for height of kill boxes
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StatusBar |= TOP_STATUS_BAR;
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// Account for height of top status bar
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// Turn on health and ammo bar
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StatusBar |= BOTTOM_STATUS_BAR;
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else if ( size < 10 )
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// Turn on transparent health and ammo bar
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StatusBar |= STATUS_PLAYER_STATS;
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// Prevent weapon from being scaled too big
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weaponscale = ( height << 16 ) / 168;
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centerx = viewwidth >> 1;
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centery = viewheight >> 1;
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centeryfrac = (centery << 16);
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yzangleconverter = ( 0xaf85 * viewheight ) / 200;
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// Center the view horizontally
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screenx = ( 320 - viewwidth ) >> 1;
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if ( viewheight >= maxheight )
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viewheight = maxheight;
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// Center the view vertically
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screeny = ( ( maxheight - viewheight ) >> 1 ) + topy;
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// Calculate offset of view window
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screenofs = ( screenx >> 2 ) + ylookup[ screeny ];
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screenofs = screenx + ylookup[ screeny ];
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// calculate trace angles and projection constants
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// Already being called in ResetFocalWidth
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//******************************************************************************
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//******************************************************************************
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CurrentFont = tinyfont;
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VW_MeasurePropString( YourComputerSucksString, &width, &height );
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DrawGameString( 160 - width / 2, 100 + 48 / 2 + 2,
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YourComputerSucksString, true );
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==========================
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==========================
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void SetupScreen ( boolean flip )
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SetViewSize(viewsize);
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shape = W_CacheLumpName( "backtile", PU_CACHE, Cvt_pic_t, 1 );
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DrawTiledRegion( 0, 16, 320, 200 - 32, 0, 16, shape );
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DrawPlayScreen (true);
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VL_CopyDisplayToHidden();
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void LoadColorMap( void )
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if (ColorMapLoaded==1)
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Error("Called LoadColorMap twice\n");
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// load in the light tables
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// 256 byte align tables
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lump = W_GetNumForName("colormap");
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length = W_LumpLength (lump) + 255;
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colormap = SafeMalloc (length);
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colormap = (byte *)( ((int)colormap + 255)&~0xff);
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W_ReadLump (lump,colormap);
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// Fix fire colors in colormap
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for (j=0xea;j<0xf9;j++)
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colormap[i*256+j]=colormap[(((i-16)/4+16))*256+j];
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lump = W_GetNumForName("specmaps");
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length = W_LumpLength (lump+1) + 255;
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redmap = SafeMalloc (length);
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redmap = (byte *)( ((int)redmap + 255)&~0xff);
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W_ReadLump (lump+1,redmap);
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greenmap = redmap+(16*256);
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// Get player colormaps
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// if (modemgame==true)
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lump = W_GetNumForName("playmaps")+1;
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for (i=0;i<MAXPLAYERCOLORS;i++)
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length = W_LumpLength (lump+i) + 255;
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playermaps[i] = SafeMalloc (length);
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playermaps[i] = (byte *)( ((int)playermaps[i] + 255)&~0xff);
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W_ReadLump (lump+i,playermaps[i]);
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printf("RT_VIEW: Colormaps Initialized\n");
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==========================
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==========================
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#define LIGHTRATEBASE 252
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#define LIGHTRATEEND 267
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#define LIGHTLEVELBASE 216
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#define LIGHTLEVELEND 223
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void SetupLightLevels ( void )
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// Set up light level for level
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if (((word)MAPSPOT(2,0,1)>=104) && ((word)MAPSPOT(2,0,1)<=105))
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fog=(word)MAPSPOT(2,0,1)-104;
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Error ("There is no Fog icon on map %ld\n",gamestate.mapon);
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if ((word)MAPSPOT(3,0,1)==139)
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lights=Z_Malloc(MAPSIZE*MAPSIZE*(sizeof(unsigned long)),PU_LEVEL,NULL);
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memset (lights,0,MAPSIZE*MAPSIZE*(sizeof(unsigned long)));
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Error("You cannot use light sourcing on a level with fog on map %ld\n",gamestate.mapon);
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else if ((word)MAPSPOT(3,0,1))
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Error("You must use the lightsource icon or nothing at all at (3,0) in plane 1 on map %ld\n",gamestate.mapon);
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if (((word)MAPSPOT(2,0,0)>=LIGHTLEVELBASE) && ((word)MAPSPOT(2,0,0)<=LIGHTLEVELEND))
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glevel=(MAPSPOT(2,0,0)-LIGHTLEVELBASE);
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Error("You must specify a valid darkness level icon at (2,0) on map %ld\n",gamestate.mapon);
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SetLightLevels ( glevel );
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if (((word)MAPSPOT(3,0,0)>=LIGHTRATEBASE) && ((word)MAPSPOT(3,0,0)<=LIGHTRATEEND))
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glevel=(MAPSPOT(3,0,0)-LIGHTRATEBASE);
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// Error("You must specify a valid darkness rate icon at (3,0) on map %ld\n",gamestate.mapon);
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SetLightRate ( glevel );
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lightningsoundtime=0;
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==========================
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==========================
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void SetLightLevels ( int darkness )
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baseminshade=0x10+((7-darkness)>>1);
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basemaxshade=0x1f-(darkness>>1);
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baseminshade=darkness;
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minshade=baseminshade;
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maxshade=basemaxshade;
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darknesslevel=darkness;
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==========================
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==========================
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int GetLightLevelTile ( void )
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return ((7-((baseminshade-0x10)<<1))+LIGHTLEVELBASE);
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return (baseminshade+LIGHTLEVELBASE);
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==========================
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==========================
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void SetLightRate ( int rate )
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normalshade=(HEIGHTFRACTION+8)-rate;
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if (normalshade>14) normalshade=14;
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if (normalshade<3) normalshade=3;
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==========================
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==========================
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int GetLightRate ( void )
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return ((HEIGHTFRACTION+8)-normalshade);
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==========================
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==========================
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int GetLightRateTile ( void )
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return ((HEIGHTFRACTION+8)-normalshade+LIGHTRATEBASE);
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==========================
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==========================
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void UpdateLightLevel (int area)
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numtiles=(numareatiles[area]>>5)-2;
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numlights=(LightsInArea[area]-numtiles)>>1;
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if (numlights>GENERALNUMLIGHTS)
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numlights=GENERALNUMLIGHTS;
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targetmin=baseminshade+(GENERALNUMLIGHTS-numlights);
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targetmax=basemaxshade-numlights;
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if (targetmax<baseminshade)
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targetmax=baseminshade;
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if (targetmin>targetmax)
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if (minshade>targetmin)
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else if (minshade<targetmin)
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if (maxshade>targetmax)
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else if (maxshade<targetmax)
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targetlevel=baseminshade+(GENERALNUMLIGHTS-numlights);
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if (abs(minshade-targetlevel)==1)
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minshade=targetlevel;
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else if (minshade>targetlevel)
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else if (minshade<targetlevel)
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==========================
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= Postive value lightens
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= Negative value darkens
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==========================
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void SetIllumination (int level)
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==========================
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= GetIlluminationDelta
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==========================
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int GetIlluminationDelta (void)
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return maxshade-basemaxshade;
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==========================
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==========================
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void UpdateLightning (void)
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UpdatePeriodicLighting();
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if ((fog==1) || (lightning==false))
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if (lightningtime<=0)
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if (lightningsoundtime>0)
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SD_Play3D (SD_LIGHTNINGSND, 0, lightningdistance);
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lightningtime=GameRandomNumber("UpdateLightning",0)<<1;
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lightningdistance=GameRandomNumber("UpdateLightning",0);
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lightninglevel=(255-lightningdistance)>>LIGHTNINGLEVEL;
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if (lightninglevel<MINLIGHTNINGLEVEL)
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lightninglevel=MINLIGHTNINGLEVEL;
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if (lightninglevel>MAXLIGHTNINGLEVEL)
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lightninglevel=MAXLIGHTNINGLEVEL;
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lightningdelta=lightninglevel>>1;
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lightningsoundtime=lightningdistance>>1;
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if (lightningdistance<100)
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SetIllumination(lightninglevel);
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else if (lightninglevel>0)
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lightninglevel-=lightningdelta;
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if (lightninglevel<=0)
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if (lightningsoundtime)
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lightningsoundtime--;
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if (lightningsoundtime<=0)
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volume=255-lightningdistance;
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if (volume>170) volume=170;
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SD_PlayPitchedSound ( SD_LIGHTNINGSND, volume,-(lightningdistance<<2));
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lightningsoundtime=0;
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==========================
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= UpdatePeriodicLighting
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==========================
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#define PERIODICMAG (6)
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#define PERIODICSTEP (20)
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#define PERIODICBASE (0x0f)
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void UpdatePeriodicLighting (void)
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val=FixedMul(PERIODICMAG,sintable[periodictime]);
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periodictime=(periodictime+PERIODICSTEP)&(FINEANGLES-1);
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basemaxshade=PERIODICBASE+(PERIODICMAG)+val;
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baseminshade=basemaxshade-GENERALNUMLIGHTS-1;
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==========================
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==========================
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void SetModemLightLevel ( int type )
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MAPSPOT(2,0,0)=(word)216;
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MAPSPOT(3,0,0)=(word)255;
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MAPSPOT(3,0,1)=(word)139;
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MAPSPOT(2,0,1)=(word)104;
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case bo_light_normal:
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case bo_light_bright:
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MAPSPOT(2,0,0)=(word)223;
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MAPSPOT(3,0,0)=(word)267;
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MAPSPOT(3,0,1)=(word)0;
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MAPSPOT(2,0,1)=(word)104;
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MAPSPOT(2,0,0)=(word)219;
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MAPSPOT(3,0,0)=(word)259;
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MAPSPOT(2,0,1)=(word)105;
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MAPSPOT(3,0,1)=(word)0;
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case bo_light_periodic:
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MAPSPOT(2,0,1)=(word)104;
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MAPSPOT(3,0,1)=(word)139;
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case bo_light_lightning:
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MAPSPOT(2,0,0)=(word)222;
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MAPSPOT(3,0,0)=(word)255;
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MAPSPOT(3,0,1)=(word)139;
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MAPSPOT(2,0,1)=(word)104;
added
removed
rott/rt_view.c
