X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/blobdiff_plain/937a9efffe3be5ecb6c6b9fb6596644d05aed3d9..cccb7f09e28f348e9273467cc8e410ad13283165:/misc.c

diff --git a/misc.c b/misc.c
index 025083d..8f5314c 100644
--- a/misc.c
+++ b/misc.c
@@ -147,8 +147,6 @@ unsigned char *hex2bin(const char *in, int outlen)
     unsigned char *ret = snewn(outlen, unsigned char);
     int i;
 
-    debug(("hex2bin: in '%s'", in));
-
     memset(ret, 0, outlen*sizeof(unsigned char));
     for (i = 0; i < outlen*2; i++) {
         int c = in[i];
@@ -196,4 +194,49 @@ void game_mkhighlight(frontend *fe, float *ret,
     }
 }
 
+static void memswap(void *av, void *bv, int size)
+{
+    char tmpbuf[512];
+    char *a = av, *b = bv;
+
+    while (size > 0) {
+	int thislen = min(size, sizeof(tmpbuf));
+	memcpy(tmpbuf, a, thislen);
+	memcpy(a, b, thislen);
+	memcpy(b, tmpbuf, thislen);
+	a += thislen;
+	b += thislen;
+	size -= thislen;
+    }
+}
+
+void shuffle(void *array, int nelts, int eltsize, random_state *rs)
+{
+    char *carray = (char *)array;
+    int i;
+
+    for (i = nelts; i-- > 1 ;) {
+        int j = random_upto(rs, i+1);
+        if (j != i)
+            memswap(carray + eltsize * i, carray + eltsize * j, eltsize);
+    }
+}
+
+void draw_rect_outline(drawing *dr, int x, int y, int w, int h, int colour)
+{
+    int x0 = x, x1 = x+w-1, y0 = y, y1 = y+h-1;
+    int coords[8];
+
+    coords[0] = x0;
+    coords[1] = y0;
+    coords[2] = x0;
+    coords[3] = y1;
+    coords[4] = x1;
+    coords[5] = y1;
+    coords[6] = x1;
+    coords[7] = y0;
+
+    draw_polygon(dr, coords, 4, -1, colour);
+}
+
 /* vim: set shiftwidth=4 tabstop=8: */