X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/blobdiff_plain/4cd257601be04d875f89c206bd413d0554b49ac6..e2cbd23a0f724f7ec8da5112e184152586a87d36:/puzzles.h

diff --git a/puzzles.h b/puzzles.h
index f3aee1a..987bd9b 100644
--- a/puzzles.h
+++ b/puzzles.h
@@ -74,6 +74,7 @@ typedef struct game_aux_info game_aux_info;
 typedef struct game_ui game_ui;
 typedef struct game_drawstate game_drawstate;
 typedef struct game game;
+typedef struct blitter blitter;
 
 #define ALIGN_VNORMAL 0x000
 #define ALIGN_VCENTRE 0x100
@@ -146,6 +147,16 @@ void activate_timer(frontend *fe);
 void status_bar(frontend *fe, char *text);
 void get_random_seed(void **randseed, int *randseedsize);
 
+blitter *blitter_new(int w, int h);
+void blitter_free(blitter *bl);
+/* save puts the portion of the current display with top-left corner
+ * (x,y) to the blitter. load puts it back again to the specified
+ * coords, or else wherever it was saved from
+ * (if x = y = BLITTER_FROMSAVED). */
+void blitter_save(frontend *fe, blitter *bl, int x, int y);
+#define BLITTER_FROMSAVED (-1)
+void blitter_load(frontend *fe, blitter *bl, int x, int y);
+
 /*
  * midend.c
  */
@@ -248,7 +259,8 @@ struct game {
     game_state *(*dup_game)(game_state *state);
     void (*free_game)(game_state *state);
     int can_solve;
-    game_state *(*solve)(game_state *state, game_aux_info *aux, char **error);
+    game_state *(*solve)(game_state *orig, game_state *curr,
+			 game_aux_info *aux, char **error);
     int can_format_as_text;
     char *(*text_format)(game_state *state);
     game_ui *(*new_ui)(game_state *state);