X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/blobdiff_plain/7ab28913e99672459fcd86ae5eb6121e3b409623..e1f3c70792cacbc9f081f56294b132d9ffbd71f0:/puzzles.h

diff --git a/puzzles.h b/puzzles.h
index 48b5b1a..c9cca05 100644
--- a/puzzles.h
+++ b/puzzles.h
@@ -499,8 +499,8 @@ struct game {
     void (*decode_ui)(game_ui *ui, char *encoding);
     void (*changed_state)(game_ui *ui, game_state *oldstate,
                           game_state *newstate);
-    char *(*interpret_move)(game_state *state, game_ui *ui, game_drawstate *ds,
-			    int x, int y, int button);
+    char *(*interpret_move)(game_state *state, game_ui *ui,
+                            const game_drawstate *ds, int x, int y, int button);
     game_state *(*execute_move)(game_state *state, char *move);
     int preferred_tilesize;
     void (*compute_size)(game_params *params, int tilesize, int *x, int *y);