My friend and I have made some code with help from our professor.

We are stuck at how to add food for the snake (have food appear randomly) and make the snake  grow if it eats it.

Then our final step would be to tell the program to stop running if the snake hits the borders and/or hits itself.

We don't have too much time to make this game awesome, but we will try.

So far. this is what we have: Any help is greatly appreciated. Thanks in Advance.

1. 
   class Location { // Define a new class called Location
     int row; // row id
     int column; // column id
     Location(int row, int column) {
       this.row = row;
       this.column = column;
     }
   }
   
   ArrayList<Location> snake;
   final int COLS = 20;
   final int ROWS = 20;
   
   
   
   void setup() {
     size(500, 500);
     startOfSnake();
   }
   
   void startOfSnake() { //changed from reset to startOfSnake
     snake = new ArrayList<Location>();
     snake.add(new Location(1,3));
     snake.add(new Location(1,2));
     snake.add(new Location(1,1));
   //  addFood.add(new FoodLocation(random(FOOD_ROWS), random(FOOD_COLS)));
   }
   
   /*
   void addFood() {
   
     
      How can we have a one block of food come up in a
      random location?
     
      This didn't work:
      rect(20, 30, 50, 50); 
   
   }
   */
   
   
   
   void drawSnake(){
     for(Location l : snake){
       drawRect(l);
     }
   }
   
   void drawRect(Location l) {
     int w = width / COLS;
     int h = height / ROWS;
     fill(0);
     stroke(255);
     rect(l.column * w, l.row * h, w, h);
   }
   
   void draw() {
     background(100);   
      // updateSnake();
       drawSnake();
      
   }
   
   // Simple test of moving snake to the right
   void keyPressed() {
     int direction = RIGHT;
     if (key == CODED) {
       direction = keyCode;
     }
     // if(!gotFood){
     snake.remove(snake.size() - 1); // remove old tail
     Location head = snake.get(0); // current head
     Location newHead = null;
    
     switch(direction) {
       case RIGHT:
         newHead = new Location(head.row, head.column + 1);
         break;
       case LEFT:
         newHead = new Location(head.row, head.column - 1);
         break;
       case UP:
         newHead = new Location(head.row - 1, head.column);
         break;
       case DOWN:
         newHead = new Location(head.row + 1, head.column);
         break;
     }
     snake.add(0, newHead); // add new head to right of old
   }