The Windows RNG turns out to only give about 16 bits at a time. This

is (a) pretty feeble, and (b) means that although Net seeds transfer
between platforms and still generate the same game, there's a
suspicious discrepancy in the typical seed _generated_ by each
platform.
I have a better RNG kicking around in this code base already, so
I'll just use it. Each midend has its own random_state, which it
passes to new_game_seed() as required. A handy consequence of this
is that initial seed data is now passed to midend_new(), which means
that new platform implementors are unlikely to forget to seed the
RNG because failure to do so causes a compile error!

[originally from svn r4187]

1 files changed, 5 insertions, 3 deletions

diff --git a/windows.c b/windows.c
index 8fbcf8e..87f4284 100644
--- a/windows.c
+++ b/windows.c
@@ -311,9 +311,13 @@ static frontend *new_window(HINSTANCE inst)
     int x, y;
     RECT r, sr;
     HDC hdc;
+    time_t t;
 
     fe = snew(frontend);
-    fe->me = midend_new(fe);
+
+    time(&t);
+    fe->me = midend_new(fe, &t, sizeof(t));
+
     fe->inst = inst;
     midend_new_game(fe->me);
     midend_size(fe->me, &x, &y);
@@ -950,8 +954,6 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 {
     MSG msg;
 
-    srand(time(NULL));
-
     InitCommonControls();
 
     if (!prev) {