[Stratagus-CVS] stratagus/src/map map_fog.c

[Nehal Mistry]

CVSROOT:        /cvsroot/stratagus
Module name:    stratagus
Branch:         
Changes by:     Nehal Mistry <address@hidden>   03/11/28 20:35:34

Modified files:
        src/map        : map_fog.c 

Log message:
        implemented FogOfWarContrast

Patches:
Index: stratagus/src/map/map_fog.c
diff -u stratagus/src/map/map_fog.c:1.120 stratagus/src/map/map_fog.c:1.121
--- stratagus/src/map/map_fog.c:1.120   Sun Nov 23 15:15:07 2003
+++ stratagus/src/map/map_fog.c Fri Nov 28 20:35:34 2003
@@ -27,7 +27,7 @@
 //      Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 //      02111-1307, USA.
 //
-//     $Id: map_fog.c,v 1.120 2003/11/23 20:15:07 jsalmon3 Exp $
+//     $Id: map_fog.c,v 1.121 2003/11/29 01:35:34 nehalmistry Exp $
 
 //@{
 
@@ -585,7 +585,8 @@
     drect.y = y;
 
     alpha = TheMap.TileGraphic->Surface->format->alpha;
-    SDL_SetAlpha(TheMap.TileGraphic->Surface, SDL_SRCALPHA, 128);
+    SDL_SetAlpha(TheMap.TileGraphic->Surface, SDL_SRCALPHA,
+       (100 - FogOfWarContrast) * 255 / 100);
     SDL_BlitSurface(TheMap.TileGraphic->Surface, &srect, TheScreen, &drect);
     SDL_SetAlpha(TheMap.TileGraphic->Surface, SDL_SRCALPHA, alpha);
 }
@@ -627,7 +628,8 @@
     drect.y = y;
 
     alpha = TheMap.TileGraphic->Surface->format->alpha;
-    SDL_SetAlpha(TheMap.TileGraphic->Surface, SDL_SRCALPHA, 128);
+    SDL_SetAlpha(TheMap.TileGraphic->Surface, SDL_SRCALPHA,
+       (100 - FogOfWarContrast) * 255 / 100);
     SDL_BlitSurface(TheMap.TileGraphic->Surface, &srect, TheScreen, &drect);
     SDL_SetAlpha(TheMap.TileGraphic->Surface, SDL_SRCALPHA, alpha);
 }
@@ -2948,7 +2950,8 @@
        SDL_Surface* s;
        s = SDL_CreateRGBSurface(SDL_SWSURFACE, TileSizeX, TileSizeY,
            32, RMASK, GMASK, BMASK, AMASK);
-       SDL_FillRect(s, NULL, SDL_MapRGBA(s->format, 0, 0, 0, 128));
+       SDL_FillRect(s, NULL, SDL_MapRGBA(s->format, 0, 0, 0,
+           (100 - FogOfWarContrast) * 255 / 100));
        SolidFog = SDL_DisplayFormatAlpha(s);
        SDL_FreeSurface(s);
     }