diff options
Diffstat (limited to 'demos/3rdparty/doom/r_things.c')
| -rw-r--r-- | demos/3rdparty/doom/r_things.c | 989 |
1 files changed, 0 insertions, 989 deletions
diff --git a/demos/3rdparty/doom/r_things.c b/demos/3rdparty/doom/r_things.c deleted file mode 100644 index c201fff1..00000000 --- a/demos/3rdparty/doom/r_things.c +++ /dev/null @@ -1,989 +0,0 @@ -// Emacs style mode select -*- C++ -*- -//----------------------------------------------------------------------------- -// -// $Id:$ -// -// Copyright (C) 1993-1996 by id Software, Inc. -// -// This source is available for distribution and/or modification -// only under the terms of the DOOM Source Code License as -// published by id Software. All rights reserved. -// -// The source is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License -// for more details. -// -// $Log:$ -// -// DESCRIPTION: -// Refresh of things, i.e. objects represented by sprites. -// -//----------------------------------------------------------------------------- - - -static const char -rcsid[] = "$Id: r_things.c,v 1.5 1997/02/03 16:47:56 b1 Exp $"; - - -#include <stdio.h> -#include <stdlib.h> - - -#include "doomdef.h" -#include "m_swap.h" - -#include "i_system.h" -#include "z_zone.h" -#include "w_wad.h" - -#include "r_local.h" - -#include "doomstat.h" - - - -#define MINZ (FRACUNIT*4) -#define BASEYCENTER 100 - -//void R_DrawColumn (void); -//void R_DrawFuzzColumn (void); - - - -typedef struct -{ - int x1; - int x2; - - int column; - int topclip; - int bottomclip; - -} maskdraw_t; - - - -// -// Sprite rotation 0 is facing the viewer, -// rotation 1 is one angle turn CLOCKWISE around the axis. -// This is not the same as the angle, -// which increases counter clockwise (protractor). -// There was a lot of stuff grabbed wrong, so I changed it... -// -fixed_t pspritescale; -fixed_t pspriteiscale; - -lighttable_t** spritelights; - -// constant arrays -// used for psprite clipping and initializing clipping -short negonearray[SCREENWIDTH]; -short screenheightarray[SCREENWIDTH]; - - -// -// INITIALIZATION FUNCTIONS -// - -// variables used to look up -// and range check thing_t sprites patches -spritedef_t* sprites; -int numsprites; - -spriteframe_t sprtemp[29]; -int maxframe; -char* spritename; - - - - -// -// R_InstallSpriteLump -// Local function for R_InitSprites. -// -void -R_InstallSpriteLump -( int lump, - unsigned frame, - unsigned rotation, - boolean flipped ) -{ - int r; - - if (frame >= 29 || rotation > 8) - I_Error("R_InstallSpriteLump: " - "Bad frame characters in lump %i", lump); - - if ((int)frame > maxframe) - maxframe = frame; - - if (rotation == 0) - { - // the lump should be used for all rotations - if (sprtemp[frame].rotate == false) - I_Error ("R_InitSprites: Sprite %s frame %c has " - "multip rot=0 lump", spritename, 'A'+frame); - - if (sprtemp[frame].rotate == true) - I_Error ("R_InitSprites: Sprite %s frame %c has rotations " - "and a rot=0 lump", spritename, 'A'+frame); - - sprtemp[frame].rotate = false; - for (r=0 ; r<8 ; r++) - { - sprtemp[frame].lump[r] = lump - firstspritelump; - sprtemp[frame].flip[r] = (byte)flipped; - } - return; - } - - // the lump is only used for one rotation - if (sprtemp[frame].rotate == false) - I_Error ("R_InitSprites: Sprite %s frame %c has rotations " - "and a rot=0 lump", spritename, 'A'+frame); - - sprtemp[frame].rotate = true; - - // make 0 based - rotation--; - if (sprtemp[frame].lump[rotation] != -1) - I_Error ("R_InitSprites: Sprite %s : %c : %c " - "has two lumps mapped to it", - spritename, 'A'+frame, '1'+rotation); - - sprtemp[frame].lump[rotation] = lump - firstspritelump; - sprtemp[frame].flip[rotation] = (byte)flipped; -} - - - - -// -// R_InitSpriteDefs -// Pass a null terminated list of sprite names -// (4 chars exactly) to be used. -// Builds the sprite rotation matrixes to account -// for horizontally flipped sprites. -// Will report an error if the lumps are inconsistant. -// Only called at startup. -// -// Sprite lump names are 4 characters for the actor, -// a letter for the frame, and a number for the rotation. -// A sprite that is flippable will have an additional -// letter/number appended. -// The rotation character can be 0 to signify no rotations. -// -void R_InitSpriteDefs (char** namelist) -{ - char** check; - int i; - int l; - int intname; - int frame; - int rotation; - int start; - int end; - int patched; - - // count the number of sprite names - check = namelist; - while (*check != NULL) - check++; - - numsprites = check-namelist; - - if (!numsprites) - return; - - sprites = Z_Malloc(numsprites *sizeof(*sprites), PU_STATIC, NULL); - - start = firstspritelump-1; - end = lastspritelump+1; - - // scan all the lump names for each of the names, - // noting the highest frame letter. - // Just compare 4 characters as ints - for (i=0 ; i<numsprites ; i++) - { - spritename = namelist[i]; - memset (sprtemp,-1, sizeof(sprtemp)); - - maxframe = -1; - intname = *(int *)namelist[i]; - - // scan the lumps, - // filling in the frames for whatever is found - for (l=start+1 ; l<end ; l++) - { - if (*(int *)lumpinfo[l].name == intname) - { - frame = lumpinfo[l].name[4] - 'A'; - rotation = lumpinfo[l].name[5] - '0'; - - if (modifiedgame) - patched = W_GetNumForName (lumpinfo[l].name); - else - patched = l; - - R_InstallSpriteLump (patched, frame, rotation, false); - - if (lumpinfo[l].name[6]) - { - frame = lumpinfo[l].name[6] - 'A'; - rotation = lumpinfo[l].name[7] - '0'; - R_InstallSpriteLump (l, frame, rotation, true); - } - } - } - - // check the frames that were found for completeness - if (maxframe == -1) - { - sprites[i].numframes = 0; - continue; - } - - maxframe++; - - for (frame = 0 ; frame < maxframe ; frame++) - { - switch ((int)sprtemp[frame].rotate) - { - case -1: - // no rotations were found for that frame at all - I_Error ("R_InitSprites: No patches found " - "for %s frame %c", namelist[i], frame+'A'); - break; - - case 0: - // only the first rotation is needed - break; - - case 1: - // must have all 8 frames - for (rotation=0 ; rotation<8 ; rotation++) - if (sprtemp[frame].lump[rotation] == -1) - I_Error ("R_InitSprites: Sprite %s frame %c " - "is missing rotations", - namelist[i], frame+'A'); - break; - } - } - - // allocate space for the frames present and copy sprtemp to it - sprites[i].numframes = maxframe; - sprites[i].spriteframes = - Z_Malloc (maxframe * sizeof(spriteframe_t), PU_STATIC, NULL); - memcpy (sprites[i].spriteframes, sprtemp, maxframe*sizeof(spriteframe_t)); - } - -} - - - - -// -// GAME FUNCTIONS -// -vissprite_t vissprites[MAXVISSPRITES]; -vissprite_t* vissprite_p; -int newvissprite; - - - -// -// R_InitSprites -// Called at program start. -// -void R_InitSprites (char** namelist) -{ - int i; - - for (i=0 ; i<SCREENWIDTH ; i++) - { - negonearray[i] = -1; - } - - R_InitSpriteDefs (namelist); -} - - - -// -// R_ClearSprites -// Called at frame start. -// -void R_ClearSprites (void) -{ - vissprite_p = vissprites; -} - - -// -// R_NewVisSprite -// -vissprite_t overflowsprite; - -vissprite_t* R_NewVisSprite (void) -{ - if (vissprite_p == &vissprites[MAXVISSPRITES]) - return &overflowsprite; - - vissprite_p++; - return vissprite_p-1; -} - - - -// -// R_DrawMaskedColumn -// Used for sprites and masked mid textures. -// Masked means: partly transparent, i.e. stored -// in posts/runs of opaque pixels. -// -short* mfloorclip; -short* mceilingclip; - -fixed_t spryscale; -fixed_t sprtopscreen; - -void R_DrawMaskedColumn (column_t* column) -{ - int topscreen; - int bottomscreen; - fixed_t basetexturemid; - - basetexturemid = dc_texturemid; - - for ( ; column->topdelta != 0xff ; ) - { - // calculate unclipped screen coordinates - // for post - topscreen = sprtopscreen + spryscale*column->topdelta; - bottomscreen = topscreen + spryscale*column->length; - - dc_yl = (topscreen+FRACUNIT-1)>>FRACBITS; - dc_yh = (bottomscreen-1)>>FRACBITS; - - if (dc_yh >= mfloorclip[dc_x]) - dc_yh = mfloorclip[dc_x]-1; - if (dc_yl <= mceilingclip[dc_x]) - dc_yl = mceilingclip[dc_x]+1; - - if (dc_yl <= dc_yh) - { - dc_source = (byte *)column + 3; - dc_texturemid = basetexturemid - (column->topdelta<<FRACBITS); - // dc_source = (byte *)column + 3 - column->topdelta; - - // Drawn by either R_DrawColumn - // or (SHADOW) R_DrawFuzzColumn. - colfunc (); - } - column = (column_t *)( (byte *)column + column->length + 4); - } - - dc_texturemid = basetexturemid; -} - - - -// -// R_DrawVisSprite -// mfloorclip and mceilingclip should also be set. -// -void -R_DrawVisSprite -( vissprite_t* vis, - int x1, - int x2 ) -{ - column_t* column; - int texturecolumn; - fixed_t frac; - patch_t* patch; - - - patch = W_CacheLumpNum (vis->patch+firstspritelump, PU_CACHE); - - dc_colormap = vis->colormap; - - if (!dc_colormap) - { - // NULL colormap = shadow draw - colfunc = fuzzcolfunc; - } - else if (vis->mobjflags & MF_TRANSLATION) - { - colfunc = R_DrawTranslatedColumn; - dc_translation = translationtables - 256 + - ( (vis->mobjflags & MF_TRANSLATION) >> (MF_TRANSSHIFT-8) ); - } - - dc_iscale = abs(vis->xiscale)>>detailshift; - dc_texturemid = vis->texturemid; - frac = vis->startfrac; - spryscale = vis->scale; - sprtopscreen = centeryfrac - FixedMul(dc_texturemid,spryscale); - - for (dc_x=vis->x1 ; dc_x<=vis->x2 ; dc_x++, frac += vis->xiscale) - { - texturecolumn = frac>>FRACBITS; -#ifdef RANGECHECK - if (texturecolumn < 0 || texturecolumn >= SHORT(patch->width)) - I_Error ("R_DrawSpriteRange: bad texturecolumn"); -#endif - column = (column_t *) ((byte *)patch + - LONG(patch->columnofs[texturecolumn])); - R_DrawMaskedColumn (column); - } - - colfunc = basecolfunc; -} - - - -// -// R_ProjectSprite -// Generates a vissprite for a thing -// if it might be visible. -// -void R_ProjectSprite (mobj_t* thing) -{ - fixed_t tr_x; - fixed_t tr_y; - - fixed_t gxt; - fixed_t gyt; - - fixed_t tx; - fixed_t tz; - - fixed_t xscale; - - int x1; - int x2; - - spritedef_t* sprdef; - spriteframe_t* sprframe; - int lump; - - unsigned rot; - boolean flip; - - int index; - - vissprite_t* vis; - - angle_t ang; - fixed_t iscale; - - // transform the origin point - tr_x = thing->x - viewx; - tr_y = thing->y - viewy; - - gxt = FixedMul(tr_x,viewcos); - gyt = -FixedMul(tr_y,viewsin); - - tz = gxt-gyt; - - // thing is behind view plane? - if (tz < MINZ) - return; - - xscale = FixedDiv(projection, tz); - - gxt = -FixedMul(tr_x,viewsin); - gyt = FixedMul(tr_y,viewcos); - tx = -(gyt+gxt); - - // too far off the side? - if (abs(tx)>(tz<<2)) - return; - - // decide which patch to use for sprite relative to player -#ifdef RANGECHECK - if ((unsigned)thing->sprite >= numsprites) - I_Error ("R_ProjectSprite: invalid sprite number %i ", - thing->sprite); -#endif - sprdef = &sprites[thing->sprite]; -#ifdef RANGECHECK - if ( (thing->frame&FF_FRAMEMASK) >= sprdef->numframes ) - I_Error ("R_ProjectSprite: invalid sprite frame %i : %i ", - thing->sprite, thing->frame); -#endif - sprframe = &sprdef->spriteframes[ thing->frame & FF_FRAMEMASK]; - - if (sprframe->rotate) - { - // choose a different rotation based on player view - ang = R_PointToAngle (thing->x, thing->y); - rot = (ang-thing->angle+(unsigned)(ANG45/2)*9)>>29; - lump = sprframe->lump[rot]; - flip = (boolean)sprframe->flip[rot]; - } - else - { - // use single rotation for all views - lump = sprframe->lump[0]; - flip = (boolean)sprframe->flip[0]; - } - - // calculate edges of the shape - tx -= spriteoffset[lump]; - x1 = (centerxfrac + FixedMul (tx,xscale) ) >>FRACBITS; - - // off the right side? - if (x1 > viewwidth) - return; - - tx += spritewidth[lump]; - x2 = ((centerxfrac + FixedMul (tx,xscale) ) >>FRACBITS) - 1; - - // off the left side - if (x2 < 0) - return; - - // store information in a vissprite - vis = R_NewVisSprite (); - vis->mobjflags = thing->flags; - vis->scale = xscale<<detailshift; - vis->gx = thing->x; - vis->gy = thing->y; - vis->gz = thing->z; - vis->gzt = thing->z + spritetopoffset[lump]; - vis->texturemid = vis->gzt - viewz; - vis->x1 = x1 < 0 ? 0 : x1; - vis->x2 = x2 >= viewwidth ? viewwidth-1 : x2; - iscale = FixedDiv (FRACUNIT, xscale); - - if (flip) - { - vis->startfrac = spritewidth[lump]-1; - vis->xiscale = -iscale; - } - else - { - vis->startfrac = 0; - vis->xiscale = iscale; - } - - if (vis->x1 > x1) - vis->startfrac += vis->xiscale*(vis->x1-x1); - vis->patch = lump; - - // get light level - if (thing->flags & MF_SHADOW) - { - // shadow draw - vis->colormap = NULL; - } - else if (fixedcolormap) - { - // fixed map - vis->colormap = fixedcolormap; - } - else if (thing->frame & FF_FULLBRIGHT) - { - // full bright - vis->colormap = colormaps; - } - - else - { - // diminished light - index = xscale>>(LIGHTSCALESHIFT-detailshift); - - if (index >= MAXLIGHTSCALE) - index = MAXLIGHTSCALE-1; - - vis->colormap = spritelights[index]; - } -} - - - - -// -// R_AddSprites -// During BSP traversal, this adds sprites by sector. -// -void R_AddSprites (sector_t* sec) -{ - mobj_t* thing; - int lightnum; - - // BSP is traversed by subsector. - // A sector might have been split into several - // subsectors during BSP building. - // Thus we check whether its already added. - if (sec->validcount == validcount) - return; - - // Well, now it will be done. - sec->validcount = validcount; - - lightnum = (sec->lightlevel >> LIGHTSEGSHIFT)+extralight; - - if (lightnum < 0) - spritelights = scalelight[0]; - else if (lightnum >= LIGHTLEVELS) - spritelights = scalelight[LIGHTLEVELS-1]; - else - spritelights = scalelight[lightnum]; - - // Handle all things in sector. - for (thing = sec->thinglist ; thing ; thing = thing->snext) - R_ProjectSprite (thing); -} - - -// -// R_DrawPSprite -// -void R_DrawPSprite (pspdef_t* psp) -{ - fixed_t tx; - int x1; - int x2; - spritedef_t* sprdef; - spriteframe_t* sprframe; - int lump; - boolean flip; - vissprite_t* vis; - vissprite_t avis; - - // decide which patch to use -#ifdef RANGECHECK - if ( (unsigned)psp->state->sprite >= numsprites) - I_Error ("R_ProjectSprite: invalid sprite number %i ", - psp->state->sprite); -#endif - sprdef = &sprites[psp->state->sprite]; -#ifdef RANGECHECK - if ( (psp->state->frame & FF_FRAMEMASK) >= sprdef->numframes) - I_Error ("R_ProjectSprite: invalid sprite frame %i : %i ", - psp->state->sprite, psp->state->frame); -#endif - sprframe = &sprdef->spriteframes[ psp->state->frame & FF_FRAMEMASK ]; - - lump = sprframe->lump[0]; - flip = (boolean)sprframe->flip[0]; - - // calculate edges of the shape - tx = psp->sx-160*FRACUNIT; - - tx -= spriteoffset[lump]; - x1 = (centerxfrac + FixedMul (tx,pspritescale) ) >>FRACBITS; - - // off the right side - if (x1 > viewwidth) - return; - - tx += spritewidth[lump]; - x2 = ((centerxfrac + FixedMul (tx, pspritescale) ) >>FRACBITS) - 1; - - // off the left side - if (x2 < 0) - return; - - // store information in a vissprite - vis = &avis; - vis->mobjflags = 0; - vis->texturemid = (BASEYCENTER<<FRACBITS)+FRACUNIT/2-(psp->sy-spritetopoffset[lump]); - vis->x1 = x1 < 0 ? 0 : x1; - vis->x2 = x2 >= viewwidth ? viewwidth-1 : x2; - vis->scale = pspritescale<<detailshift; - - if (flip) - { - vis->xiscale = -pspriteiscale; - vis->startfrac = spritewidth[lump]-1; - } - else - { - vis->xiscale = pspriteiscale; - vis->startfrac = 0; - } - - if (vis->x1 > x1) - vis->startfrac += vis->xiscale*(vis->x1-x1); - - vis->patch = lump; - - if (viewplayer->powers[pw_invisibility] > 4*32 - || viewplayer->powers[pw_invisibility] & 8) - { - // shadow draw - vis->colormap = NULL; - } - else if (fixedcolormap) - { - // fixed color - vis->colormap = fixedcolormap; - } - else if (psp->state->frame & FF_FULLBRIGHT) - { - // full bright - vis->colormap = colormaps; - } - else - { - // local light - vis->colormap = spritelights[MAXLIGHTSCALE-1]; - } - - R_DrawVisSprite (vis, vis->x1, vis->x2); -} - - - -// -// R_DrawPlayerSprites -// -void R_DrawPlayerSprites (void) -{ - int i; - int lightnum; - pspdef_t* psp; - - // get light level - lightnum = - (viewplayer->mo->subsector->sector->lightlevel >> LIGHTSEGSHIFT) - +extralight; - - if (lightnum < 0) - spritelights = scalelight[0]; - else if (lightnum >= LIGHTLEVELS) - spritelights = scalelight[LIGHTLEVELS-1]; - else - spritelights = scalelight[lightnum]; - - // clip to screen bounds - mfloorclip = screenheightarray; - mceilingclip = negonearray; - - // add all active psprites - for (i=0, psp=viewplayer->psprites; - i<NUMPSPRITES; - i++,psp++) - { - if (psp->state) - R_DrawPSprite (psp); - } -} - - - - -// -// R_SortVisSprites -// -vissprite_t vsprsortedhead; - - -void R_SortVisSprites (void) -{ - int i; - int count; - vissprite_t* ds; - vissprite_t* best; - vissprite_t unsorted; - fixed_t bestscale; - - count = vissprite_p - vissprites; - - unsorted.next = unsorted.prev = &unsorted; - - if (!count) - return; - - for (ds=vissprites ; ds<vissprite_p ; ds++) - { - ds->next = ds+1; - ds->prev = ds-1; - } - - vissprites[0].prev = &unsorted; - unsorted.next = &vissprites[0]; - (vissprite_p-1)->next = &unsorted; - unsorted.prev = vissprite_p-1; - - // pull the vissprites out by scale - //best = 0; // shut up the compiler warning - vsprsortedhead.next = vsprsortedhead.prev = &vsprsortedhead; - for (i=0 ; i<count ; i++) - { - bestscale = MAXINT; - for (ds=unsorted.next ; ds!= &unsorted ; ds=ds->next) - { - if (ds->scale < bestscale) - { - bestscale = ds->scale; - best = ds; - } - } - best->next->prev = best->prev; - best->prev->next = best->next; - best->next = &vsprsortedhead; - best->prev = vsprsortedhead.prev; - vsprsortedhead.prev->next = best; - vsprsortedhead.prev = best; - } -} - - - -// -// R_DrawSprite -// -void R_DrawSprite (vissprite_t* spr) -{ - drawseg_t* ds; - short clipbot[SCREENWIDTH]; - short cliptop[SCREENWIDTH]; - int x; - int r1; - int r2; - fixed_t scale; - fixed_t lowscale; - int silhouette; - - for (x = spr->x1 ; x<=spr->x2 ; x++) - clipbot[x] = cliptop[x] = -2; - - // Scan drawsegs from end to start for obscuring segs. - // The first drawseg that has a greater scale - // is the clip seg. - for (ds=ds_p-1 ; ds >= drawsegs ; ds--) - { - // determine if the drawseg obscures the sprite - if (ds->x1 > spr->x2 - || ds->x2 < spr->x1 - || (!ds->silhouette - && !ds->maskedtexturecol) ) - { - // does not cover sprite - continue; - } - - r1 = ds->x1 < spr->x1 ? spr->x1 : ds->x1; - r2 = ds->x2 > spr->x2 ? spr->x2 : ds->x2; - - if (ds->scale1 > ds->scale2) - { - lowscale = ds->scale2; - scale = ds->scale1; - } - else - { - lowscale = ds->scale1; - scale = ds->scale2; - } - - if (scale < spr->scale - || ( lowscale < spr->scale - && !R_PointOnSegSide (spr->gx, spr->gy, ds->curline) ) ) - { - // masked mid texture? - if (ds->maskedtexturecol) - R_RenderMaskedSegRange (ds, r1, r2); - // seg is behind sprite - continue; - } - - - // clip this piece of the sprite - silhouette = ds->silhouette; - - if (spr->gz >= ds->bsilheight) - silhouette &= ~SIL_BOTTOM; - - if (spr->gzt <= ds->tsilheight) - silhouette &= ~SIL_TOP; - - if (silhouette == 1) - { - // bottom sil - for (x=r1 ; x<=r2 ; x++) - if (clipbot[x] == -2) - clipbot[x] = ds->sprbottomclip[x]; - } - else if (silhouette == 2) - { - // top sil - for (x=r1 ; x<=r2 ; x++) - if (cliptop[x] == -2) - cliptop[x] = ds->sprtopclip[x]; - } - else if (silhouette == 3) - { - // both - for (x=r1 ; x<=r2 ; x++) - { - if (clipbot[x] == -2) - clipbot[x] = ds->sprbottomclip[x]; - if (cliptop[x] == -2) - cliptop[x] = ds->sprtopclip[x]; - } - } - - } - - // all clipping has been performed, so draw the sprite - - // check for unclipped columns - for (x = spr->x1 ; x<=spr->x2 ; x++) - { - if (clipbot[x] == -2) - clipbot[x] = viewheight; - - if (cliptop[x] == -2) - cliptop[x] = -1; - } - - mfloorclip = clipbot; - mceilingclip = cliptop; - R_DrawVisSprite (spr, spr->x1, spr->x2); -} - - - - -// -// R_DrawMasked -// -void R_DrawMasked (void) -{ - vissprite_t* spr; - drawseg_t* ds; - - R_SortVisSprites (); - - if (vissprite_p > vissprites) - { - // draw all vissprites back to front - for (spr = vsprsortedhead.next ; - spr != &vsprsortedhead ; - spr=spr->next) - { - - R_DrawSprite (spr); - } - } - - // render any remaining masked mid textures - for (ds=ds_p-1 ; ds >= drawsegs ; ds--) - if (ds->maskedtexturecol) - R_RenderMaskedSegRange (ds, ds->x1, ds->x2); - - // draw the psprites on top of everything - // but does not draw on side views - if (!viewangleoffset) - R_DrawPlayerSprites (); -} - - - |