Patches from Frode Austvik to modify the effects of the mouse

buttons in several games if STYLUS_BASED is defined: in games where
you can set a puzzle element to 'on', 'off' or 'not yet set', when
it's hard to mimic a second mouse button, it's better to have the
one 'button' cycle between all three states rather than from 'on'
back to 'unset'.

[originally from svn r8784]

1 files changed, 13 insertions, 0 deletions

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;