X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/blobdiff_plain/9d6c3859071b207a37cbd56624937a6b2daafdab..e94d848e651d6f60607753a29ff62d1fb7337198:/puzzles.h

diff --git a/puzzles.h b/puzzles.h
index 5c19e02..4762c7c 100644
--- a/puzzles.h
+++ b/puzzles.h
@@ -230,6 +230,16 @@ void game_mkhighlight(frontend *fe, float *ret,
 /* Randomly shuffles an array of items. */
 void shuffle(void *array, int nelts, int eltsize, random_state *rs);
 
+/* Draw a rectangle outline, using the frontend's draw_line. */
+void draw_rect_outline(frontend *fe, int x, int y, int w, int h,
+                       int colour);
+
+/*
+ * dsf.c
+ */
+int dsf_canonify(int *dsf, int val);
+void dsf_merge(int *dsf, int v1, int v2);
+
 /*
  * version.c
  */
@@ -239,6 +249,7 @@ extern char ver[];
  * random.c
  */
 random_state *random_init(char *seed, int len);
+random_state *random_copy(random_state *tocopy);
 unsigned long random_bits(random_state *state, int bits);
 unsigned long random_upto(random_state *state, unsigned long limit);
 void random_free(random_state *state);