int x = 0;
int y = 0;

Entity[] entities = new Entity[0];

int numEntities = 0;

void setup() {
  size(800, 640);
  // Init all controller keys to "not pressed"
  for (int i = 0; i< 4; i++) {
    keys[i] = false;
  }
}

void draw() {
  background(255);
  move();
  drawEntities();
  rect(x, y, 50, 50);
}



void move() {
  if(keys[W] == true) {  //Move the left player up.
    y = max(0, y-6);
    //y--; 
  }
  if(keys[A] == true) {  //Move the left player down.
    x = max(0, x-6);
    //x--;
   }
  if(keys[S] == true) {  //Move the right player up.
    y = min(640, y+6+50)-50;
    //y++;
  }
  if(keys[D] == true) {  //Move the right player down.
    x = min(800, x+6+50)-50;
    //x++;
  }
}

void mousePressed() {
  append(entities, new Entity(mouseX, mouseY));
  numEntities++;
  println(numEntities);
}

void drawEntities() {
  for (int i = 0; i < numEntities; i++) {
    println(i);
    rect(entities[i].getX(), entities[i].getY(), 50, 50);
  }
}

class Entity {
  int x;
  int y;
  
  Entity (int _x, int _y) {
    int x = _x;
    int y = _y;
  }
  
  int getX() {
    return x;
  }
  int getY() {
    return y;
  }
}

boolean[] keys = new boolean[4];
final int W = 0;
final int A = 1;
final int S = 2;
final int D = 3;

void keyPressed() {
  if(key == 'w') {
    keys[W] = true;
  } else if(key == 'a') {
    keys[A] = true;
  } else if(key == 's') {
    keys[S] = true;
  } else if (key == 'd') {
    keys[D] = true;
  }
}

void keyReleased() {
  if(key == 'w') {
    keys[W] = false;
  } else if(key == 'a') {
    keys[A] = false;
  } else if(key == 's') {
    keys[S] = false;
  } else if (key == 'd') {
    keys[D] = false;
  }
}