}
}
-static char *interpret_move(game_state *state, game_ui *ui, game_drawstate *ds,
- int x, int y, int button)
+static char *interpret_move(game_state *state, game_ui *ui,
+ const game_drawstate *ds, int x, int y, int button)
{
int dx=0, dy=0;
char *move;