From fb9d00b87f47a043b1f4a314be6607085947d3c8 Mon Sep 17 00:00:00 2001
From: Aetias <aetias@outlook.com>
Date: Sun, 20 Oct 2024 10:39:09 +0200
Subject: Fix build; add RNG code

---
 include/System/Random.hpp | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 include/System/Random.hpp

(limited to 'include/System/Random.hpp')

diff --git a/include/System/Random.hpp b/include/System/Random.hpp
new file mode 100644
index 00000000..4506466d
--- /dev/null
+++ b/include/System/Random.hpp
@@ -0,0 +1,22 @@
+#pragma once
+
+#include "global.h"
+#include "types.h"
+
+struct Random {
+    /* 00 */ u64 mRandomValue;
+    /* 08 */ u64 mFactor;
+    /* 10 */ u64 mAddend;
+    /* 18 */
+
+    /**
+     * Generate a random number from 0 (inclusive) to `max` (exclusive)
+     */
+    inline u32 Next(u32 max) {
+        mRandomValue = mAddend + mFactor * mRandomValue;
+        u64 result   = (mRandomValue >> 32) * max;
+        return result >> 32;
+    }
+};
+
+extern Random *gRandom;
-- 
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