From b8d8ffb3bffadbe6b51c1c24f8a08d47adf9b80d Mon Sep 17 00:00:00 2001
From: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
Date: Fri, 11 Nov 2011 19:54:34 +0200
Subject: [PATCH] Make the random seed controllable

- This allows eliminating random seed differences from savestates (may
be useful for some forms of sync stability testing).
- Would also allow (re)recording with randomization enabled, as the
seed can be set portably).
---
 snes/interface/interface.cpp | 4 ++++
 snes/interface/interface.hpp | 1 +
 snes/system/system.cpp       | 2 +-
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/snes/interface/interface.cpp b/snes/interface/interface.cpp
index dcaa9da..ce55a6c 100644
--- a/snes/interface/interface.cpp
+++ b/snes/interface/interface.cpp
@@ -22,4 +22,8 @@ time_t Interface::currentTime() {
   return time(0);
 }
 
+time_t Interface::randomSeed() {
+  return time(0);
+}
+
 }
diff --git a/snes/interface/interface.hpp b/snes/interface/interface.hpp
index 42de597..93d1969 100644
--- a/snes/interface/interface.hpp
+++ b/snes/interface/interface.hpp
@@ -6,6 +6,7 @@ struct Interface {
   virtual string path(Cartridge::Slot::e slot, const string &hint) = 0;
   virtual void message(const string &text);
   virtual time_t currentTime();
+  virtual time_t randomSeed();
 };
 
 extern Interface *interface;
diff --git a/snes/system/system.cpp b/snes/system/system.cpp
index 23cff30..48f4af9 100755
--- a/snes/system/system.cpp
+++ b/snes/system/system.cpp
@@ -147,7 +147,7 @@ void System::unload() {
 }
 
 void System::power() {
-  random.seed((unsigned)time(0));
+  random.seed((unsigned)interface->randomSeed());
 
   region = config.region;
   expansion = config.expansion_port;