version "0.1"

  add notes

snake_FanFEI.c

@@ -43,8 +43,8 @@ typedef struct Food {
 //------------------------------------------------------------------------------------
 // Global Variables Declaration
 //------------------------------------------------------------------------------------
-static const int screenWidth = 800;
-static const int screenHeight = 450;
+static const int screenWidth = 1500; //Set the width of the game interface
+static const int screenHeight = 1500; //Set the Height of the game interface
 
 static int framesCounter = 0;
 static bool gameOver = false;
@@ -73,9 +73,9 @@ int main(void)
 {
     // Initialization (Note windowTitle is unused on Android)
     //---------------------------------------------------------
-    InitWindow(screenWidth, screenHeight, "sample game: snake");
+    InitWindow(screenWidth, screenHeight, "sample game: snake By FanFEI"); //Initialize the interface and title
 
-    InitGame();
+    InitGame();//Initialize the game 
 
 #if defined(PLATFORM_WEB)
     emscripten_set_main_loop(UpdateDrawFrame, 60, 1);
@@ -110,10 +110,10 @@ int main(void)
 void InitGame(void)
 {
     framesCounter = 0;
-    gameOver = false;
+    gameOver = false; //Game state
     pause = false;
     
-    counterTail = 1;
+    counterTail = 2; //The initial length of the snake
     allowMove = false;
 
     offset.x = screenWidth%SQUARE_SIZE;
@@ -125,8 +125,8 @@ void InitGame(void)
         snake[i].size = (Vector2){ SQUARE_SIZE, SQUARE_SIZE };
         snake[i].speed = (Vector2){ SQUARE_SIZE, 0 };
 
-        if (i == 0) snake[i].color = DARKBLUE;
-        else snake[i].color = BLUE;
+        if (i == 0) snake[i].color = DARKBLUE; //Snake head color
+        else snake[i].color = BLUE; //Snake body color
     }
 
     for (int i = 0; i < SNAKE_LENGTH; i++)
@@ -134,7 +134,7 @@ void InitGame(void)
         snakePosition[i] = (Vector2){ 0.0f, 0.0f };
     }
 
-    fruit.size = (Vector2){ SQUARE_SIZE, SQUARE_SIZE };
+    fruit.size = (Vector2){ SQUARE_SIZE, SQUARE_SIZE }; //The color, coordinates and status of the props
     fruit.color = SKYBLUE;
     fruit.active = false;
 }
@@ -144,7 +144,7 @@ void UpdateGame(void)
 {
     if (!gameOver)
     {
-        if (IsKeyPressed('P')) pause = !pause;
+        if (IsKeyPressed('P')) pause = !pause; //Keyboard input p pause
         
         if (!pause)
         {
@@ -204,10 +204,10 @@ void UpdateGame(void)
             // Fruit position calculation
             if (!fruit.active)
             {
-                fruit.active = true;
+                fruit.active = true; //Randomly generate a fruit on the map
                 fruit.position = (Vector2){ GetRandomValue(0, (screenWidth/SQUARE_SIZE) - 1)*SQUARE_SIZE + offset.x/2, GetRandomValue(0, (screenHeight/SQUARE_SIZE) - 1)*SQUARE_SIZE + offset.y/2 };
 
-                for (int i = 0; i < counterTail; i++)
+                for (int i = 0; i < counterTail; i++) //The position of the fruit will not overlap with the snake
                 {
                     while ((fruit.position.x == snake[i].position.x) && (fruit.position.y == snake[i].position.y))
                     {
@@ -231,7 +231,7 @@ void UpdateGame(void)
     }
     else
     {
-        if (IsKeyPressed(KEY_ENTER))
+        if (IsKeyPressed(KEY_ENTER)) //Press enter to start the game
         {
             InitGame();
             gameOver = false;