Fix tile dragging(no tile dragged when blank area clicked)

[kub] / kub.c

diff --git a/kub.c b/kub.c
index f2fe3b22746238219b22931ef13c621e9154495d..d878ecdc9acc16abf1d8fff1d1c30a61ed518b61 100644 (file)
--- a/kub.c
+++ b/kub.c
@@ -453,6 +453,7 @@ static gboolean on_button_press_event (GtkWidget *widget, GdkEventButton *event,
 
 static gboolean on_button_release_event (GtkWidget *widget, GdkEventButton *event, game_t *game)
 {
+    game->current_tile = -1;
     printf ("You released button %d\n", event->button);
 
     return TRUE;
@@ -462,19 +463,19 @@ static gboolean on_button_motion_event (GtkWidget *widget, GdkEventMotion *event
                                        game_t *game, cairo_t *cr)
 {
     tile_t *tile;
-
+    
     tile = &game->deck.tiles[game->current_tile];
-
+    
     /* First, invalidate the region where the tile currently is. */
-    gtk_widget_queue_draw_area (widget, tile->x, tile->y, TILE_WIDTH, TILE_HEIGHT);
-                       
+    gtk_widget_queue_draw_area (widget, tile->x - 1, tile->y - 1, TILE_WIDTH + 1, TILE_HEIGHT + 2);
+    
     /* Then, move the tile */
     tile->x = event->x;
     tile->y = event->y;
-
+    
     /* Finally, invalidate the region where the tile is now. */
-    gtk_widget_queue_draw_area (widget, tile->x, tile->y, TILE_WIDTH, TILE_HEIGHT);
-
+    gtk_widget_queue_draw_area (widget, tile->x - 1, tile->y - 1, TILE_WIDTH + 1, TILE_HEIGHT + 2);
+    
     return TRUE;
 }