Palisade: scale line thickness unboundedly with tile size.

The previous expression for WIDTH defined it, curiously, as (1 +
(TILESIZE >= 16) + (TILESIZE >= 32) + (TILESIZE >= 64)) which is
roughly logarithmic in tile size, but bounded above by a maximum of 4
pixels. On high-DPI displays this isn't really good enough any more.
Now I've set the line thickness to a constant fraction of the tile
size (but still bounded below by 1), so it's much easier to see the
lines when the puzzle is expanded to extra large size.

1 files changed, 1 insertions, 1 deletions

diff --git a/palisade.c b/palisade.c
index 58619bf..fdd69cc 100644
--- a/palisade.c
+++ b/palisade.c
@@ -908,7 +908,7 @@ struct game_drawstate {
 
 #define TILESIZE (ds->tilesize)
 #define MARGIN (ds->tilesize / 2)
-#define WIDTH (1 + (TILESIZE >= 16) + (TILESIZE >= 32) + (TILESIZE >= 64))
+#define WIDTH (3*TILESIZE/32 > 1 ? 3*TILESIZE/32 : 1)
 #define CENTER ((ds->tilesize / 2) + WIDTH/2)
 
 #define FROMCOORD(x) (((x) - MARGIN) / TILESIZE)