event->y >= tile_y && event->y <= (tile_y + TILE_HEIGHT) )
game->current_tile = i;
+ else
+ game->current_tile = -1;
}
return TRUE;
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);
-
- /* 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);
-
+ if (game->current_tile >= 0)
+ {
+ 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);
+
+ /* 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);
+ }
return TRUE;
}