let objects = [];

const sc = 100;

const fov = 2.35;

const res = 100;

let showMap = 0;

let particle;

​

function setup() {

  createCanvas(600, 600);

  player = new Player(sc, [0.03, 0.03, 0.03], res, fov);

  world = new World(sc);

  objects.push(new WorldObject(sc, 0, 0, -1, 0.1));

  particle = new Particle();

  background(220);

  objects.push(particle);

}

​

function draw() {

  //background(220, 50);

  background(0);

​

  if (keyIsDown(87)) player.moveForw(); // w

  if (keyIsDown(83)) player.moveBack(); // s

  if (keyIsDown(65)) player.lookLeft(); // a

  if (keyIsDown(68)) player.lookRight(); // d  

  if (keyIsDown(LEFT_ARROW)) player.strafeLeft(); // Left Arrow

  if (keyIsDown(RIGHT_ARROW)) player.strafeRight(); // Right Arrow

​

  for (let ni=0; ni<objects.length; ni++){

    objects[ni].update();

  }

  if ((showMap % 2) == 0) {

    // Ray tracing section:

    push();

    translate(0, height / 2);

    noStroke();

    rectMode(CENTER);

    let best = 0;

​

    let marcher = new Marcher(player.phi);

​

    for (let ni = 0; ni < player.res; ni++) {

      marcher.reset();

      marcher.turnRight(player.fov / 2 - ni * player.fov / player.res);

      marcher.step(player.r + 0.001);

      let col = (player.rayMarch(marcher, objects, 0) / TWO_PI);

      fill(5/(col)+10);

      rect((ni + 0.5) * width / res, 0, width / res, 1+0*(20/(col)));

    }

    pop();

  }

​

  noStroke();

  fill(255);

  text(frameRate().toFixed(1), width - 200, 20);

  //let lat = 180/PI*asin(1-player.phi[2][0])

  //let lon = 180/PI*atan2(1-player.phi[1][0], 1-player.phi[0][0])

  //text(lon.toFixed(1) + "E " +lat.toFixed(1)+ "N", width-200,40);

​

  if (showMap < 2) {

    push();

    translate(150, 150);

    world.show();

    for (let ni = 0; ni < objects.length; ni++) {

      objects[ni].show();

    }

    player.show();

    pop();

  }

}

​

function keyPressed() {

  if (keyCode === ENTER) {

    //objects.push(new WorldObject(sc, player.phi[0][0], player.phi[1][0], player.phi[2][0], 0.02));

    objects.push(new Particle());

  } else if (keyCode === BACKSPACE) {

    objects.pop();

  } else if (key === 'm') {

    showMap = (showMap + 1) % 4;

  }

}