X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/blobdiff_plain/724b4a492febdea0e28986485f5d0c43fe7abc3c..f5e8f79dac020bcb0b19e3a7d674412befec0280:/tents.c

diff --git a/tents.c b/tents.c
index 2c8b042..a229e55 100644
--- a/tents.c
+++ b/tents.c
@@ -1469,6 +1469,7 @@ static int drag_xform(game_ui *ui, int x, int y, int v)
     ymin = min(ui->dsy, ui->dey);
     ymax = max(ui->dsy, ui->dey);
 
+#ifndef STYLUS_BASED
     /*
      * Left-dragging has no effect, so we treat a left-drag as a
      * single click on dsx,dsy.
@@ -1477,6 +1478,7 @@ static int drag_xform(game_ui *ui, int x, int y, int v)
         xmin = xmax = ui->dsx;
         ymin = ymax = ui->dsy;
     }
+#endif
 
     if (x < xmin || x > xmax || y < ymin || y > ymax)
         return v;                      /* no change outside drag area */
@@ -1489,11 +1491,18 @@ static int drag_xform(game_ui *ui, int x, int y, int v)
          * Results of a simple click. Left button sets blanks to
          * tents; right button sets blanks to non-tents; either
          * button clears a non-blank square.
+         * If stylus-based however, it loops instead.
          */
         if (ui->drag_button == LEFT_BUTTON)
+#ifdef STYLUS_BASED
+            v = (v == BLANK ? TENT : (v == TENT ? NONTENT : BLANK));
+        else
+            v = (v == BLANK ? NONTENT : (v == NONTENT ? TENT : BLANK));
+#else
             v = (v == BLANK ? TENT : BLANK);
         else
             v = (v == BLANK ? NONTENT : BLANK);
+#endif
     } else {
         /*
          * Results of a drag. Left-dragging has no effect.
@@ -1503,7 +1512,11 @@ static int drag_xform(game_ui *ui, int x, int y, int v)
         if (ui->drag_button == RIGHT_BUTTON)
             v = (v == BLANK ? NONTENT : v);
         else
+#ifdef STYLUS_BASED
+            v = (v == BLANK ? NONTENT : v);
+#else
             /* do nothing */;
+#endif
     }
 
     return v;