修改游戏底层矩阵相关

source/math/Random.h

@@ -0,0 +1,114 @@
+// Copyright (c) 2016-2018 Ember - Nomango
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#pragma once
+#include <random>
+
+namespace ember
+{
+    namespace math
+    {
+        //
+        // 随机数
+        //
+        // 获取指定范围内的一个随机数, 如:
+        // int n = math::Random(1, 5);  // 获取 1~5 内的随机整数, 包含 1 和 5
+        // 产生的随机数类型取决于参数的类型, 如获取随机浮点数:
+        // float d = math::Random(1.2f, 1.5f);
+        //
+
+        int Random(int min, int max);
+
+        unsigned int Random(unsigned int min, unsigned int max);
+
+        long Random(long min, long max);
+
+        unsigned long Random(unsigned long min, unsigned long max);
+
+        char Random(char min, char max);
+
+        float Random(float min, float max);
+
+        double Random(double min, double max);
+
+        //
+        // Details of math::Rand
+        //
+
+        namespace __rand_detail
+        {
+            inline std::default_random_engine &GetRandomEngine()
+            {
+                static std::random_device device;
+                static std::default_random_engine engine(device());
+                return engine;
+            }
+
+            template <typename T>
+            inline T RandomInt(T min, T max)
+            {
+                std::uniform_int_distribution<T> dist(min, max);
+                return dist(GetRandomEngine());
+            }
+
+            template <typename T>
+            inline T RandomReal(T min, T max)
+            {
+                std::uniform_real_distribution<T> dist(min, max);
+                return dist(GetRandomEngine());
+            }
+        } // namespace __rand_detail
+
+        inline int Random(int min, int max)
+        {
+            return __rand_detail::RandomInt(min, max);
+        }
+
+        inline unsigned int Random(unsigned int min, unsigned int max)
+        {
+            return __rand_detail::RandomInt(min, max);
+        }
+
+        inline long Random(long min, long max)
+        {
+            return __rand_detail::RandomInt(min, max);
+        }
+
+        inline unsigned long Random(unsigned long min, unsigned long max)
+        {
+            return __rand_detail::RandomInt(min, max);
+        }
+
+        inline char Random(char min, char max)
+        {
+            return static_cast<char>(__rand_detail::RandomInt(static_cast<int>(min), static_cast<int>(max)));
+        }
+
+        inline float Random(float min, float max)
+        {
+            return __rand_detail::RandomReal(min, max);
+        }
+
+        inline double Random(double min, double max)
+        {
+            return __rand_detail::RandomReal(min, max);
+        }
+    } // namespace math
+} // namespace ember