From 63fee16ca52dda5aea434b0ef89aef0c7ce09746 Mon Sep 17 00:00:00 2001 From: helixhorned Date: Wed, 9 Apr 2014 18:51:35 +0000 Subject: [PATCH] CON: in rotatespritea and screentext, if alpha < 0, make -alpha denote blend. For convenience, orientation gets bit 1 (translucency) set automatically. Again, test/screentext.con is updated to show off this functionality (the code there assumes that additive blending tables are loaded at blend numbers 101 -- 132). BUILD_LUNATIC. git-svn-id: https://svn.eduke32.com/eduke32@4428 1a8010ca-5511-0410-912e-c29ae57300e0 --- polymer/eduke32/source/game.c | 8 +++--- polymer/eduke32/source/game.h | 6 ++++- polymer/eduke32/source/gameexec.c | 6 ++++- polymer/eduke32/source/lunatic/control.lua | 8 +++++- polymer/eduke32/source/lunatic/defs.ilua | 2 +- .../source/lunatic/test/screentext.con | 26 +++++++++++++++++-- 6 files changed, 47 insertions(+), 9 deletions(-) diff --git a/polymer/eduke32/source/game.c b/polymer/eduke32/source/game.c index 5187daa5e..0a06e6720 100644 --- a/polymer/eduke32/source/game.c +++ b/polymer/eduke32/source/game.c @@ -758,7 +758,7 @@ void G_AddCoordsFromRotation(vec2_t *coords, const vec2_t *unitDirection, const // screentext vec2_t G_ScreenText(const int32_t font, int32_t x, int32_t y, const int32_t z, const int32_t blockangle, const int32_t charangle, - const char *str, const int32_t shade, int32_t pal, int32_t o, const int32_t alpha, + const char *str, const int32_t shade, int32_t pal, int32_t o, int32_t alpha, int32_t xspace, int32_t yline, int32_t xbetween, int32_t ybetween, const int32_t f, const int32_t x1, const int32_t y1, const int32_t x2, const int32_t y2) { @@ -769,7 +769,7 @@ vec2_t G_ScreenText(const int32_t font, const vec2_t Xdirection = { sintable[(blockangle+512)&2047], sintable[blockangle&2047], }; const vec2_t Ydirection = { sintable[(blockangle+1024)&2047], sintable[(blockangle+512)&2047], }; - int32_t tile; + int32_t blendidx=0, tile; char t; // set the start and end points depending on direction @@ -781,6 +781,8 @@ vec2_t G_ScreenText(const int32_t font, if (str == NULL) return size; + NEG_ALPHA_TO_BLEND(alpha, blendidx, o); + end = (f & TEXT_BACKWARDS) ? str-1 : Bstrchr(str,'\0'); text = (f & TEXT_BACKWARDS) ? Bstrchr(str,'\0')-1 : str; @@ -929,7 +931,7 @@ vec2_t G_ScreenText(const int32_t font, G_AddCoordsFromRotation(&location, &Xdirection, pos.x); G_AddCoordsFromRotation(&location, &Ydirection, pos.y); - rotatesprite_(location.x, location.y, z, angle, tile, shade, pal, orientation, alpha, 0, x1, y1, x2, y2); + rotatesprite_(location.x, location.y, z, angle, tile, shade, pal, orientation, alpha, blendidx, x1, y1, x2, y2); break; } diff --git a/polymer/eduke32/source/game.h b/polymer/eduke32/source/game.h index 5ad78f4bb..27ad32a18 100644 --- a/polymer/eduke32/source/game.h +++ b/polymer/eduke32/source/game.h @@ -372,9 +372,13 @@ extern char* G_GetSubString(const char *text, const char *end, const int32_t ite extern int32_t G_GetStringTile(int32_t font, char *t, int32_t f); extern vec2_t G_ScreenTextSize(const int32_t font, int32_t x, int32_t y, const int32_t z, const int32_t blockangle, const char *str, const int32_t o, int32_t xspace, int32_t yline, int32_t xbetween, int32_t ybetween, const int32_t f, const int32_t x1, const int32_t y1, const int32_t x2, const int32_t y2); extern void G_AddCoordsFromRotation(vec2_t *coords, const vec2_t *unitDirection, const int32_t magnitude); -extern vec2_t G_ScreenText(const int32_t font, int32_t x, int32_t y, const int32_t z, const int32_t blockangle, const int32_t charangle, const char *str, const int32_t shade, int32_t pal, int32_t o, const int32_t alpha, int32_t xspace, int32_t yline, int32_t xbetween, int32_t ybetween, const int32_t f, int32_t x1, int32_t y1, int32_t x2, int32_t y2); +extern vec2_t G_ScreenText(const int32_t font, int32_t x, int32_t y, const int32_t z, const int32_t blockangle, const int32_t charangle, const char *str, const int32_t shade, int32_t pal, int32_t o, int32_t alpha, int32_t xspace, int32_t yline, int32_t xbetween, int32_t ybetween, const int32_t f, int32_t x1, int32_t y1, int32_t x2, int32_t y2); extern vec2_t G_ScreenTextShadow(int32_t sx, int32_t sy, const int32_t font, int32_t x, int32_t y, const int32_t z, const int32_t blockangle, const int32_t charangle, const char *str, const int32_t shade, int32_t pal, int32_t o, const int32_t alpha, int32_t xspace, int32_t yline, int32_t xbetween, int32_t ybetween, const int32_t f, int32_t x1, int32_t y1, int32_t x2, int32_t y2); +#define NEG_ALPHA_TO_BLEND(alpha, blend, orientation) do { \ + if (alpha < 0) { blend = -alpha; alpha = 0; orientation |= RS_TRANS1; } \ +} while (0) + int32_t app_main(int32_t argc,const char **argv); void fadepal(int32_t r,int32_t g,int32_t b,int32_t start,int32_t end,int32_t step); //void fadepaltile(int32_t r,int32_t g,int32_t b,int32_t start,int32_t end,int32_t step,int32_t tile); diff --git a/polymer/eduke32/source/gameexec.c b/polymer/eduke32/source/gameexec.c index 9139d9db2..c77d2474c 100644 --- a/polymer/eduke32/source/gameexec.c +++ b/polymer/eduke32/source/gameexec.c @@ -2741,6 +2741,8 @@ nullquote: int32_t x1=Gv_GetVarX(*insptr++), y1=Gv_GetVarX(*insptr++); int32_t x2=Gv_GetVarX(*insptr++), y2=Gv_GetVarX(*insptr++); + int32_t blendidx = 0; + if (tw != CON_ROTATESPRITE16 && !(orientation&ROTATESPRITE_FULL16)) { x<<=16; @@ -2761,7 +2763,9 @@ nullquote: orientation &= (ROTATESPRITE_MAX-1); - rotatesprite_(x,y,z,a,tilenum,shade,pal,2|orientation,alpha,0,x1,y1,x2,y2); + NEG_ALPHA_TO_BLEND(alpha, blendidx, orientation); + + rotatesprite_(x,y,z,a,tilenum,shade,pal,2|orientation,alpha,blendidx,x1,y1,x2,y2); continue; } diff --git a/polymer/eduke32/source/lunatic/control.lua b/polymer/eduke32/source/lunatic/control.lua index a307f5c64..1523d4853 100644 --- a/polymer/eduke32/source/lunatic/control.lua +++ b/polymer/eduke32/source/lunatic/control.lua @@ -408,8 +408,14 @@ function _rotspr(x, y, zoom, ang, tilenum, shade, pal, orientation, error(format("invalid coordinates (%.03f, %.03f)", x, y), 2) end + local blendidx = 0 + if (alpha < 0) then + blendidx = -alpha + alpha = 0 + end + ffiC.rotatesprite_(x, y, zoom, ang, tilenum, shade, pal, bor(2,orientation), - alpha, 0, cx1, cy1, cx2, cy2) + alpha, blendidx, cx1, cy1, cx2, cy2) end -- The external legacy tile drawing function for Lunatic. diff --git a/polymer/eduke32/source/lunatic/defs.ilua b/polymer/eduke32/source/lunatic/defs.ilua index 48f9fa8cd..cf0706481 100644 --- a/polymer/eduke32/source/lunatic/defs.ilua +++ b/polymer/eduke32/source/lunatic/defs.ilua @@ -699,7 +699,7 @@ typedef struct { } vec2_t; vec2_t G_ScreenText(const int32_t font, int32_t x, int32_t y, const int32_t z, const int32_t blockangle, const int32_t charangle, - const char *str, const int32_t shade, int32_t pal, int32_t o, const int32_t alpha, + const char *str, const int32_t shade, int32_t pal, int32_t o, int32_t alpha, int32_t xspace, int32_t yline, int32_t xbetween, int32_t ybetween, const int32_t f, const int32_t x1, const int32_t y1, const int32_t x2, const int32_t y2); vec2_t G_ScreenTextSize(const int32_t font, diff --git a/polymer/eduke32/source/lunatic/test/screentext.con b/polymer/eduke32/source/lunatic/test/screentext.con index 517bd796a..6844181c3 100644 --- a/polymer/eduke32/source/lunatic/test/screentext.con +++ b/polymer/eduke32/source/lunatic/test/screentext.con @@ -62,6 +62,7 @@ gamevar x2 0 0 gamevar y2 0 0 gamevar temp 0 0 +gamevar doaddtvblend 0 0 state resetbounds setvarvar x1 windowx1 @@ -178,14 +179,32 @@ onevent EVENT_DISPLAYREST xorvar f TEXT_UPPERCASE state increment_line - // Calculate periodically cycling alpha value + // Calculate periodically cycling alpha value. PERIODIC_ALPHA. setvarvar temp totalclock shiftvarl temp 2 sin alpha temp // alpha is now in [-2^14 .. 2^14] shiftvarr alpha 7 // [-2^7 .. 2^7] addvar alpha 128 // [0 .. 256] - ifvarg alpha 255 setvar alpha 255 + ifvarg alpha 254 { setvar alpha 255 setvar doaddtvblend 1 } + else ifvarl alpha 2 { setvar doaddtvblend 0 } + + ifvare doaddtvblend 1 + { + shiftvarr alpha 2 // [0 63] + + ifvarg alpha 31 + { + setvar temp 63 + subvarvar temp alpha + setvarvar alpha temp + orvar o 32 // RS_TRANS2 + } + // alpha now in [0 .. 31] + + addvar alpha 101 // additive translucency tables are assumed to be at [101 .. 132] + mulvar alpha -1 + } // divider line rotatespritea 240 65 32768 512 WINDOWBORDER1 0 2 0 85 x1 y1 x2 y2 @@ -324,4 +343,7 @@ onevent EVENT_DISPLAYREST screentext font 10 100 z 1536 charangle 1020 shade pal o 85 xspace yline xbetween ybetween f x1 y1 x2 y2 orvar f TEXT_LITERALESCAPE screentext font 20 100 z 1536 charangle 1020 shade pal o 170 xspace yline xbetween ybetween f x1 y1 x2 y2 + + ifvarand o 32 xorvar o 32 // clear RS_TRANS2 + setvar alpha 0 // Clear alpha so it's only active from PERIODIC_ALPHA to here. endevent