Q&D port of decal code to draw generic wall sprites
- This still doesn't use all the sprite properties correctly. It also looks like they're going to need different code to build the clipping arrays. But at least wall sprites are drawn at the proper angle now!
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Randy Heit
parent
15251e7a21
commit
d0043bed78
5 changed files with 279 additions and 47 deletions
252
src/r_things.cpp
252
src/r_things.cpp
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@ -114,6 +114,8 @@ FDynamicColormap *VisPSpritesBaseColormap[NUMPSPRITES];
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static int spriteshade;
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FTexture *WallSpriteTile;
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// constant arrays
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// used for psprite clipping and initializing clipping
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short zeroarray[MAXWIDTH];
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@ -145,6 +147,8 @@ static vissprite_t **spritesorter;
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static int spritesortersize = 0;
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static int vsprcount;
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static void R_ProjectWallSprite(AActor *thing, fixed_t fx, fixed_t fy, fixed_t fz, FTextureID picnum, fixed_t xscale, fixed_t yscale, INTBOOL flip);
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void R_DeinitSprites()
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{
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@ -401,6 +405,151 @@ void R_DrawVisSprite (vissprite_t *vis)
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NetUpdate ();
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}
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void R_DrawWallSprite(vissprite_t *spr)
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{
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int x1, x2;
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fixed_t yscale;
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int shade = LIGHT2SHADE(140);
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x1 = MAX<int>(spr->x1, spr->wallc.SX1);
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x2 = MIN<int>(spr->x2, spr->wallc.SX2 + 1);
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if (x1 >= x2)
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return;
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WallT.InitFromWallCoords(&spr->wallc);
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PrepWall(swall, lwall, spr->pic->GetWidth() << FRACBITS, x1, x2);
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dc_texturemid = spr->gzt - viewz;
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yscale = FRACUNIT;
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if (spr->renderflags & RF_XFLIP)
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{
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int right = (spr->pic->GetWidth() << FRACBITS) - 1;
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for (int i = x1; i < x2; i++)
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{
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lwall[i] = right - lwall[i];
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}
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}
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// Prepare lighting
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bool calclighting = false;
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FDynamicColormap *usecolormap = basecolormap;
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bool rereadcolormap = true;
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// Decals that are added to the scene must fade to black.
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if (spr->Style.RenderStyle == LegacyRenderStyles[STYLE_Add] && usecolormap->Fade != 0)
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{
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usecolormap = GetSpecialLights(usecolormap->Color, 0, usecolormap->Desaturate);
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rereadcolormap = false;
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}
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rw_light = rw_lightleft + (x1 - spr->wallc.SX1) * rw_lightstep;
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if (fixedlightlev >= 0)
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dc_colormap = usecolormap->Maps + fixedlightlev;
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else if (fixedcolormap != NULL)
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dc_colormap = fixedcolormap;
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else if (!foggy && (spr->renderflags & RF_FULLBRIGHT))
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dc_colormap = usecolormap->Maps;
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else
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calclighting = true;
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// Draw it
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WallSpriteTile = spr->pic;
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if (spr->renderflags & RF_YFLIP)
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{
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sprflipvert = true;
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yscale = -yscale;
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dc_texturemid = dc_texturemid - (spr->pic->GetHeight() << FRACBITS);
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}
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else
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{
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sprflipvert = false;
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}
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// rw_offset is used as the texture's vertical scale
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rw_offset = SafeDivScale30(1, yscale);
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dc_x = x1;
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ESPSResult mode;
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mode = R_SetPatchStyle (spr->Style.RenderStyle, spr->Style.alpha, spr->Translation, spr->FillColor);
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// R_SetPatchStyle can modify basecolormap.
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if (rereadcolormap)
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{
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usecolormap = basecolormap;
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}
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if (mode == DontDraw)
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{
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return;
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}
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else
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{
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int stop4;
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if (mode == DoDraw0)
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{ // 1 column at a time
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stop4 = dc_x;
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}
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else // DoDraw1
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{ // up to 4 columns at a time
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stop4 = x2 & ~3;
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}
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while ((dc_x < stop4) && (dc_x & 3))
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{
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if (calclighting)
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{ // calculate lighting
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dc_colormap = usecolormap->Maps + (GETPALOOKUP (rw_light, shade) << COLORMAPSHIFT);
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}
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R_WallSpriteColumn(R_DrawMaskedColumn);
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dc_x++;
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}
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while (dc_x < stop4)
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{
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if (calclighting)
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{ // calculate lighting
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dc_colormap = usecolormap->Maps + (GETPALOOKUP (rw_light, shade) << COLORMAPSHIFT);
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}
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rt_initcols();
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for (int zz = 4; zz; --zz)
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{
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R_WallSpriteColumn(R_DrawMaskedColumnHoriz);
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dc_x++;
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}
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rt_draw4cols(dc_x - 4);
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}
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while (dc_x < x2)
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{
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if (calclighting)
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{ // calculate lighting
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dc_colormap = usecolormap->Maps + (GETPALOOKUP (rw_light, shade) << COLORMAPSHIFT);
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}
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R_WallSpriteColumn(R_DrawMaskedColumn);
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dc_x++;
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}
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}
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R_FinishSetPatchStyle();
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}
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void R_WallSpriteColumn (void (*drawfunc)(const BYTE *column, const FTexture::Span *spans))
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{
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unsigned int texturecolumn = lwall[dc_x] >> FRACBITS;
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dc_iscale = MulScale16 (swall[dc_x], rw_offset);
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spryscale = SafeDivScale32 (1, dc_iscale);
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if (sprflipvert)
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sprtopscreen = centeryfrac + FixedMul (dc_texturemid, spryscale);
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else
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sprtopscreen = centeryfrac - FixedMul (dc_texturemid, spryscale);
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const BYTE *column;
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const FTexture::Span *spans;
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column = WallSpriteTile->GetColumn (texturecolumn, &spans);
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dc_texturefrac = 0;
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drawfunc (column, spans);
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rw_light += rw_lightstep;
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}
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void R_DrawVisVoxel(vissprite_t *spr, int minslabz, int maxslabz, short *cliptop, short *clipbot)
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{
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ESPSResult mode;
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@ -521,12 +670,6 @@ void R_ProjectSprite (AActor *thing, int fakeside, F3DFloor *fakefloor, F3DFloor
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fy = thing->PrevY + FixedMul (r_TicFrac, thing->y - thing->PrevY);
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fz = thing->PrevZ + FixedMul (r_TicFrac, thing->z - thing->PrevZ) + thing->GetBobOffset(r_TicFrac);
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// transform the origin point
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tr_x = fx - viewx;
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tr_y = fy - viewy;
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tz = DMulScale20 (tr_x, viewtancos, tr_y, viewtansin);
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tex = NULL;
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voxel = NULL;
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@ -618,6 +761,18 @@ void R_ProjectSprite (AActor *thing, int fakeside, F3DFloor *fakefloor, F3DFloor
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return;
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}
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if ((thing->renderflags & RF_SPRITETYPEMASK) == RF_WALLSPRITE)
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{
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R_ProjectWallSprite(thing, fx, fy, fz, picnum, spritescaleX, spritescaleY, flip);
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return;
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}
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// transform the origin point
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tr_x = fx - viewx;
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tr_y = fy - viewy;
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tz = DMulScale20 (tr_x, viewtancos, tr_y, viewtansin);
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// thing is behind view plane?
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if (voxel == NULL && tz < MINZ)
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return;
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@ -782,7 +937,6 @@ void R_ProjectSprite (AActor *thing, int fakeside, F3DFloor *fakefloor, F3DFloor
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vis->heightsec = heightsec;
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vis->sector = thing->Sector;
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vis->cx = tx2;
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vis->depth = tz;
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vis->gx = fx;
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vis->gy = fy;
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@ -807,12 +961,14 @@ void R_ProjectSprite (AActor *thing, int fakeside, F3DFloor *fakefloor, F3DFloor
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{
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vis->voxel = voxel->Voxel;
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vis->bIsVoxel = true;
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vis->bWallSprite = false;
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DrewAVoxel = true;
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}
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else
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{
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vis->pic = tex;
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vis->bIsVoxel = false;
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vis->bWallSprite = false;
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}
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// The software renderer cannot invert the source without inverting the overlay
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@ -874,6 +1030,78 @@ void R_ProjectSprite (AActor *thing, int fakeside, F3DFloor *fakefloor, F3DFloor
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}
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}
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static void R_ProjectWallSprite(AActor *thing, fixed_t fx, fixed_t fy, fixed_t fz, FTextureID picnum, fixed_t xscale, fixed_t yscale, INTBOOL flip)
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{
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FWallCoords wallc;
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int x1, x2;
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fixed_t lx1, lx2, ly1, ly2;
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fixed_t gzb, gzt, tz;
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FTexture *pic = TexMan(picnum, true);
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angle_t ang = (thing->angle + ANGLE_90) >> ANGLETOFINESHIFT;
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vissprite_t *vis;
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// Determine left and right edges of sprite. The sprite's angle is its normal,
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// so the edges are 90 degrees each side of it.
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x2 = pic->GetScaledWidth();
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x1 = pic->GetScaledLeftOffset();
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x1 *= xscale;
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x2 *= xscale;
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lx1 = fx - FixedMul(x1, finecosine[ang]) - viewx;
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ly1 = fy - FixedMul(x1, finesine[ang]) - viewy;
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lx2 = lx1 + FixedMul(x2, finecosine[ang]);
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ly2 = ly1 + FixedMul(x2, finesine[ang]);
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// Is it off-screen?
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if (wallc.Init(lx1, ly1, lx2, ly2, TOO_CLOSE_Z))
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return;
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if (wallc.SX1 > WindowRight || wallc.SX2 <= WindowLeft)
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return;
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// Sprite sorting should probably treat these as walls, not sprites,
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// but right now, I just want to get them drawing.
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tz = DMulScale20(fx - viewx, viewtancos, fy - viewy, viewtansin);
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int scaled_to = pic->GetScaledTopOffset();
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int scaled_bo = scaled_to - pic->GetScaledHeight();
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gzt = fz + yscale * scaled_to;
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gzb = fz + yscale * scaled_bo;
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vis = R_NewVisSprite();
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vis->x1 = wallc.SX1 < WindowLeft ? WindowLeft : wallc.SX1;
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vis->x2 = wallc.SX2 >= WindowRight ? WindowRight-1 : wallc.SX2-1;
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vis->idepth = (unsigned)DivScale32(1, tz) >> 1;
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vis->depth = tz;
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vis->sector = thing->Sector;
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vis->heightsec = NULL;
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vis->gx = fx;
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vis->gy = fy;
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vis->gz = fz;
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vis->gzb = gzb;
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vis->gzt = gzt;
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vis->deltax = fx - viewx;
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vis->deltay = fy - viewy;
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vis->renderflags = thing->renderflags;
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if(thing->flags5 & MF5_BRIGHT) vis->renderflags |= RF_FULLBRIGHT; // kg3D
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vis->Style.RenderStyle = thing->RenderStyle;
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vis->FillColor = thing->fillcolor;
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vis->Translation = thing->Translation;
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vis->FakeFlatStat = 0;
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vis->Style.alpha = thing->alpha;
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vis->fakefloor = NULL;
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vis->fakeceiling = NULL;
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vis->ColormapNum = 0;
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vis->bInMirror = MirrorFlags & RF_XFLIP;
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vis->pic = pic;
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vis->bIsVoxel = false;
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vis->bWallSprite = true;
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vis->ColormapNum = GETPALOOKUP(
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(fixed_t)DivScale12 (r_SpriteVisibility, MAX(tz, MINZ)), spriteshade);
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vis->Style.colormap = basecolormap->Maps + (vis->ColormapNum << COLORMAPSHIFT);
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vis->wallc = wallc;
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}
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//
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// R_AddSprites
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@ -1904,7 +2132,14 @@ void R_DrawSprite (vissprite_t *spr)
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{
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mfloorclip = clipbot;
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mceilingclip = cliptop;
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R_DrawVisSprite (spr);
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if (!spr->bWallSprite)
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{
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R_DrawVisSprite(spr);
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}
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else
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{
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R_DrawWallSprite(spr);
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}
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}
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else
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{
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@ -2161,7 +2396,6 @@ void R_ProjectParticle (particle_t *particle, const sector_t *sector, int shade,
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vis->yscale = xscale;
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vis->depth = tz;
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vis->idepth = (DWORD)DivScale32 (1, tz) >> 1;
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vis->cx = tx;
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vis->gx = particle->x;
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vis->gy = particle->y;
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vis->gz = particle->z; // kg3D
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