snake grows at random.lol

snake.ino

@@ -1,4 +1,5 @@
 #define BOARD_LENGTH 8
+#define SNAKE_MAX_SIZE 12
 
 struct pair {
   int x;
@@ -32,7 +33,7 @@ public:
     }
     //else ignore    
   }
-  void eat(pair p);
+  void grow();
   void snake_to_matrix(int (*pixels)[BOARD_LENGTH]){
     for(int i = 0; i < BOARD_LENGTH; i++){
       for(int j = 0; j < BOARD_LENGTH; j++){
@@ -80,7 +81,12 @@ void Snake::next_move() {
   pos[0] = get_next_move(pos[0]);
 }
 
-void Snake::eat(pair p) { pos[snake_size++] = p; }
+void Snake::grow() { 
+  if (snake_size < SNAKE_MAX_SIZE) {
+    pos[snake_size] = pos[snake_size - 1];
+    ++snake_size;
+  }
+}
 
 const int row[8] = {2, 7, 19, 5, 13, 18, 12, 16};
 
@@ -114,15 +120,18 @@ void setup() {
       pixels[x][y] = HIGH;
     }
   }
+  randomSeed(analogRead(0));
 }
 
 void loop() {
-  snake.change_state(read_sensors());
+  if(random(50) == 0) snake.grow();
   snake.snake_to_matrix(pixels);
   snake.next_move();
   // draw the screen:
-  for(int i = 0; i < 100; i++)
+  for(int i = 0; i < 30; i++) {
     Display();
+    snake.change_state(read_sensors());
+  }
 }
 
 void readSensors() {