Expose random engine and change to 64 bits

Author: hockyy

include/tcframe/spec/random/Random.hpp

@@ -4,6 +4,8 @@
 #include <random>
 
 using std::mt19937;
+using std::mt19937_64;
+using std::random_shuffle;
 using std::uniform_real_distribution;
 using std::uniform_int_distribution;
 
@@ -47,8 +49,12 @@ class Random {
         std::shuffle(first, last, engine);
     }
 
+    mt19937_64 *getEngine() {
+        return &engine;
+    }
+
 private:
-    mt19937 engine;
+    mt19937_64 engine;
 };
 
 }