Rename UI_UPDATE as MOVE_UI_UPDATE

All the other constants named UI_* are special key names that can be
passed to midend_process_key(), but UI_UPDATE is a special return value
from the back-end interpret_move() function instead.  This renaming
makes the distinction clear and provides a naming convention for future
special return values from interpret_move().

1 files changed, 2 insertions, 2 deletions

diff --git a/flip.c b/flip.c
index 1a24e81..c53d2b9 100644
--- a/flip.c
+++ b/flip.c
@@ -961,7 +961,7 @@ static char *interpret_move(const game_state *state, game_ui *ui,
             tx = ui->cx; ty = ui->cy;
             ui->cdraw = true;
         }
-        nullret = UI_UPDATE;
+        nullret = MOVE_UI_UPDATE;
 
         if (tx >= 0 && tx < w && ty >= 0 && ty < h) {
             /*
@@ -996,7 +996,7 @@ static char *interpret_move(const game_state *state, game_ui *ui,
         ui->cx = min(max(ui->cx, 0), state->w - 1);
         ui->cy = min(max(ui->cy, 0), state->h - 1);
         ui->cdraw = true;
-        nullret = UI_UPDATE;
+        nullret = MOVE_UI_UPDATE;
     }
 
     return nullret;