migrate ALMOST everything from source tree into client

source/client/common/Random.hpp

@@ -0,0 +1,55 @@
+/********************************************************************
+	Minecraft: Pocket Edition - Decompilation Project
+	Copyright (C) 2023 iProgramInCpp
+	
+	The following code is licensed under the BSD 1 clause license.
+	SPDX-License-Identifier: BSD-1-Clause
+ ********************************************************************/
+
+#pragma once
+
+#include <cstdint>
+#include "LongHack.hpp"
+
+// This appears to be VERY similar to https://github.com/SethRobinson/proton/blob/master/shared/util/CRandom.h#L10
+// It turns out, RTsoft, Mojang, and the author of Game Coding Complete used the same reference implementation of
+// the Mersenne Twister:
+//  http://www.math.sci.hiroshima-u.ac.jp/m-mat/MT/MT2002/CODES/mt19937ar.c
+
+//A random generator based on the Mersenne Twister originally developed by Takuji Nishimura and Makoto Matsumoto.
+// From the book GameCoding Complete by Mike McShaffry
+
+/* Period parameters */
+#define CMATH_N 624
+#define CMATH_M 397
+#define CMATH_MATRIX_A 0x9908b0df /* constant vector a */
+#define CMATH_UPPER_MASK 0x80000000 /* most significant w-r bits */
+#define CMATH_LOWER_MASK 0x7fffffff /* least significant r bits */
+
+/* Tempering parameters */
+#define CMATH_TEMPERING_MASK_B 0x9d2c5680
+#define CMATH_TEMPERING_MASK_C 0xefc60000
+#define CMATH_TEMPERING_SHIFT_U(y) (y >> 11)
+#define CMATH_TEMPERING_SHIFT_S(y) (y << 7)
+#define CMATH_TEMPERING_SHIFT_T(y) (y << 15)
+#define CMATH_TEMPERING_SHIFT_L(y) (y >> 18)
+
+int getTimeMs();
+
+class Random
+{
+	unsigned int rseed;
+	unsigned TLong mt[CMATH_N];  // the array for the state vector
+	int mti;                    // mti==N+1 means mt[N] is not initialized
+
+public:
+	Random(TLong seed = getTimeMs());
+	void setSeed(TLong seed);
+	void init_genrand(unsigned TLong);
+	int nextInt(int max);
+	unsigned genrand_int32();
+	float nextFloat();
+	double genrand_real2();
+	TLong nextLong();
+	int nextInt();
+};