Movimento con tastiera

ArenaWars.pde

PImage sfondo;
PImage player1;
PImage player2;
PImage gem;
int x1 = 100;
int y1 = 300;

int x2 = 500;
int y2 = 300;

int pointX;
int pointY;

boolean player1Right = false;
boolean player1Left = false;
boolean player1Up = false;
boolean player1Down = false;

boolean player2Right = false;
boolean player2Left = false;
boolean player2Up = false;
boolean player2Down = false;


void setup() {
  size(600, 600, P3D);
  sfondo = loadImage("arena.png");
  player1 = loadImage("player1.png");
  player2 = loadImage("player2.png");
  gem = loadImage("point.png");
  pointX = (int) random(width);
  pointY = (int) random(height);
  imageMode(CENTER);
}

void draw() {
  if (player1Right) {
    x1 = x1 + 2;
  }

  if (player1Left) {
    x1 = x1 - 2;
  }

  if (player1Up) {
    y1 = y1 -2;
  }

  if (player1Down) {
    y1 = y1 + 2;
  }

  if (player2Right) {
    x2 = x2 + 2;
  }

  if (player2Left) {
    x2 = x2 - 2;
  }

  if (player2Up) {
    y2 = y2 -2;
  }

  if (player2Down) {
    y2 = y2 + 2;
  }
  float distance = dist(x1, y1, pointX, pointY);
  if (distance < 12.5) {
    pointX = (int) random(width);
    pointY = (int) random(height);
    println("Punto al ROSSO!");
  }
  float distance2 = dist(x2, y2, pointX, pointY);
  if (distance2 < 12.5) {
    pointX = (int) random(width);
    pointY = (int) random(height);
    
    println("Punto al GIALLO!");
  }
  image(sfondo, width / 2, height / 2);
  image(player1, x1, y1);
  image(player2, x2, y2);
  image(gem, pointX, pointY);
}

void keyPressed() {
  if (key == 'd') {
    player1Right = true;
  }
  if (key == 'a') {
    player1Left = true;
  }
  if (key == 'w') {
    player1Up = true;
  }
  if (key == 's') {
    player1Down = true;
  }
  if (keyCode == RIGHT) {
    player2Right = true;
  }
  if (keyCode == LEFT) {
    player2Left = true;
  }
  if (keyCode == UP) {
    player2Up = true;
  }
  if (keyCode == DOWN) {
    player2Down = true;
  }
}
void keyReleased() {
  if (key == 'd') {
    player1Right = false;
  }
  if (key == 'a') {
    player1Left = false;
  }
  if (key == 'w') {
    player1Up = false;
  }
  if (key == 's') {
    player1Down = false;
  }
  if (keyCode == RIGHT) {
    player2Right = false;
  }
  if (keyCode == LEFT) {
    player2Left = false;
  }
  if (keyCode == UP) {
    player2Up = false;
  }
  if (keyCode == DOWN) {
    player2Down = false;
  }
}