Separated generation into common file

src/CMakeLists.txt

@@ -5,6 +5,7 @@ add_executable(snakeplusplus
     ./gamestate.cpp
     ./snake.cpp
     ./playerinterface.cpp
+    ./common.cpp
 )
 
 target_include_directories(snakeplusplus PUBLIC ${CMAKE_CURRENT_LIST_DIR})

src/common.cpp

@@ -0,0 +1,21 @@
+// common.cpp
+#include <random>
+#include "common.hpp"
+
+namespace snakeplusplus
+{
+    std::default_random_engine generator;
+    void InitializeGenerator(void)
+    {
+        generator.seed(std::random_device{}());
+    }
+
+    // Returns a newly generated number
+    int GenerateRandomNumber(int generationLimit)
+    {
+        int generatedNumber;
+        std::uniform_int_distribution<> distribution(0, generationLimit - 1);
+        generatedNumber = distribution(snakeplusplus::generator);
+        return generatedNumber;
+    }
+}

src/common.hpp

@@ -1,13 +1,20 @@
 #ifndef COMMON_HPP
 #define COMMON_HPP
 
-enum PlayerDirection
+namespace snakeplusplus
 {
-    kNone = 0,
-    kLeft = 1,
-    kUp = 2,
-    kDown = 3,
-    kRight = 4
-};
+    void InitializeGenerator(void);
+    int GenerateRandomNumber(int generationLimit);
+
+    enum PlayerDirection
+    {
+        kNone = 0,
+        kLeft = 1,
+        kUp = 2,
+        kDown = 3,
+        kRight = 4
+    };
+
+}
 
 #endif

src/gamestate.cpp

@@ -9,6 +9,7 @@ namespace snakeplusplus
 {
     GameEngine::GameEngine()
     {
+        snakeplusplus::InitializeGenerator();
         return;
     }
 

src/snake.cpp

@@ -1,11 +1,12 @@
 // Snake.cpp
 #include <queue>
-#include <random>
 #include <SFML/Graphics.hpp>
+#include "common.hpp"
 #include "snake.hpp"
 
 namespace snakeplusplus
 {
+
     void Snake::Pop(void)
     {
         *(body.front()) = ' ';
@@ -21,26 +22,11 @@ namespace snakeplusplus
         return;
     }
 
-    Food::Food(void)
-    {
-        generator.seed(std::random_device{}());
-        return;
-    }
-
     // Returns a new food object for the snakeFood
     void Food::GenerateNewFood(sf::Vector2f boundaries)
     {
-        location.x = GenerateRandomNumber(boundaries.x);
-        location.y = GenerateRandomNumber(boundaries.y);
+        location.x = snakeplusplus::GenerateRandomNumber(boundaries.x);
+        location.y = snakeplusplus::GenerateRandomNumber(boundaries.y);
         return;
     }
-
-    // Returns a newly generated number
-    int Food::GenerateRandomNumber(int generationLimit)
-    {
-        int generatedNumber;
-        std::uniform_int_distribution<> distribution(0, generationLimit - 1);
-        generatedNumber = distribution(generator);
-        return generatedNumber;
-    }
 }

src/snake.hpp

@@ -4,7 +4,6 @@
 
 #include <SFML/System/Vector2.hpp>
 #include <queue>
-#include <random>
 
 namespace snakeplusplus
 {
@@ -21,13 +20,9 @@ namespace snakeplusplus
     struct Food
     {
     public:
-        Food(void);
         sf::Vector2f location;
         char* food;
         void GenerateNewFood(sf::Vector2f boundaries);
-    private:
-        std::default_random_engine generator;
-        int GenerateRandomNumber(int generationLimit);
     };
 }