Diff: SnakeHead/SnakeHead.cpp

Revision:

14:4356797fd16e

Parent:

12:cb3a81adf48b

--- a/SnakeHead/SnakeHead.cpp	Sun May 24 15:08:31 2020 +0000
+++ b/SnakeHead/SnakeHead.cpp	Sun May 24 15:27:53 2020 +0000
@@ -12,15 +12,16 @@
 }
 
 void SnakeHead::init(int size, int speed) {
+    //initialises head size and speed
     _size = size*2;
     _speed = speed;
-    
+    //head starts in centre of screen
     _x = WIDTH/2 - _size/2;
     _y = HEIGHT/2 - _size/2;
-    
+    //generates random number between 0 and 3
     srand(time(NULL));
     int direction = rand() %3;
-    
+    //sets initial direction of snake from the random number generated 
     if (direction == 0) { //snake moves north
         _velocity.x = -_speed;
         _velocity.y = 0;
@@ -40,6 +41,7 @@
 }
 
 void SnakeHead::draw(N5110 &lcd) {
+    
     lcd.drawRect(_x,_y,_size,2,FILL_BLACK);
 }
 
@@ -47,7 +49,7 @@
 
     _x += _velocity.x;
     _y += _velocity.y;
-    
+    /* wall collision debugging
     if (_x < 0) {
         _x = 1;
     } else if (_x > 84) {
@@ -56,13 +58,13 @@
         _y = 1;
     } else if (_y > 48) {
         _y = 48 - _size;
-    }
+    } */
     //printf("head x = %i\n", _x);
     //printf("head y = %i\n", _y);
 }
 
 void SnakeHead::change_direction(Direction d) {
-        
+        //changes direction of the head based on the direction of the joystick
         if (d == N) {
             _velocity.x = 0;
             _velocity.y = -_speed;