Merge remote-tracking branch 'upstream/master' into 80c

1 files changed, 18 insertions, 0 deletions

diff --git a/src/engine/rng.c b/src/engine/rng.c
new file mode 100644
index 000000000..7d4b5600e
--- /dev/null
+++ b/src/engine/rng.c
@@ -0,0 +1,18 @@
+#include "global.h"
+#include "rng.h"
+
+// The number 1103515245 comes from the example implementation of rand and srand
+// in the ISO C standard.
+
+u32 gRngValue;
+
+u16 Random(void)
+{
+    gRngValue = 1103515245 * gRngValue + 24691;
+    return gRngValue >> 16;
+}
+
+void SeedRng(u16 seed)
+{
+    gRngValue = seed;
+}