// https://thecodingtrain.com/CodingChallenges/145-2d-ray-casting.html

// https://youtu.be/TOEi6T2mtHo

​

// 2D Ray Casting

// https://editor.p5js.org/codingtrain/sketches/Nqsq3DFv-

​

let walls = [];

let ray;

let particle;

let xoff = 0;

let yoff = 10000;

let wallNumber = 3;

​

function setup() {

  // Make canvas and save SVG when clicked

  createCanvas(1000, 1000, SVG).mousePressed(saveIt);

  for (let i = 0; i < wallNumber; i++) {

    let x1 = random(width);

    let x2 = random(width);

    let y1 = random(height);

    let y2 = random(height);

    walls[i] = new Boundary(x1, y1, x2, y2);

  }

  walls.push(new Boundary(0, 0, width-1, 0));

  walls.push(new Boundary(width-1, 0, width-1, height-1));

  walls.push(new Boundary(width-1, height-1, 0, height-1));

  walls.push(new Boundary(0, height-1, 0, 0));

  particle = new Particle();

}

​

function draw() {

  background(0);

  for (let wall of walls) {

    wall.show();

  }

  particle.update(noise(xoff) * width, noise(yoff) * height);

  //particle.update(width/2, height/2);

  particle.show();

  particle.look(walls);

​

  //xoff += 0.01;

  //yoff += 0.01;

}

​

function saveIt() {

  save("mySVG.svg")

  console.log("SVG saved.")

}