Simple Snake - OpenProcessing

sketch381762
xxxxxxxxxx
 
//Code by: Samson Goodenough
​
ArrayList<Integer> x = new ArrayList<Integer>(), y = new ArrayList<Integer>();
int w = 30, h = 30, bs = 20, dir = 2;
int foodx = 10, foody = 14;
int[] dx = {0, 0, 1, -1}, dy = {1, -1, 0, 0};
int length = 1;
boolean grid = true;
boolean gameover = false;
void setup() {
  size(600, 600);
  x.add(5);
  y.add(5);
}
void draw() {
  background(55);
  if(grid == true){
  for(int i = 0; i < w; i++) line(i*bs, 0, i*bs, height);
  for(int i = 0; i < h; i++) line(0, i*bs, width, i*bs);
  }
  for(int i = 0; i < x.size(); i++) {
    fill(255, 0, 0);
    rect(x.get(i)*bs, y.get(i)*bs, bs, bs);
  }
  if(!gameover){
  fill(0, 237, 247);
  line(0, 599, 599, 599);
  line(599, 0, 599, 599);
  rect(foodx*bs, foody*bs, bs, bs);
  if(frameCount%5==0) {
  x.add(0,x.get(0) + dx[dir]);
  y.add(0,y.get(0) + dy[dir]);
  if(x.get(0) < 0 || y.get(0) < 0 || x.get(0) >= w || y.get(0) >= h) gameover = true;
  for(int i = 1; i < x.size(); i++) if(x.get(0)==x.get(i) && y.get(0)==y.get(i)) gameover = true;
  if(x.get(0)==foodx && y.get(0)==foody){
    length++;
    foodx = (int)random(0, w);
    foody = (int)random(0, h);
  }else {
  x.remove(x.size()-1);
  y.remove(y.size()-1);
    } 
  }
  }else {
    grid = false;
    fill(0);
    textSize(30);
    textAlign(CENTER);
    text("GAME OVER, PRESS SPACE", width/2, height/2);
    textSize(24);
    text("Your Length Was "+length+"!", width/2, height/2+50);
    if(keyPressed&&key==' '){
      dir = 2;
      x.clear();
      y.clear();
      x.add(5);
      y.add(5);
      length = 1;
    gameover=false;
    grid = true;
  }
  }
  }
​
void keyPressed() {
int newdir = key=='s' ? 0 : (key=='w' ? 1 : (key=='d' ? 2 : (key=='a' ? 3 : -1)));
if(newdir != -1 && (x.size() <= 1 || !(x.get(1)==x.get(0)+dx[newdir] && y.get(1)==y.get(0)+dy[newdir]))) dir = newdir;
}