//NOC - Week4

​

class Ege {

  constructor() {

    this.mass = 1;

    this.position = createVector(width/2, 30);

    this.velocity = createVector(0, 0);

    this.acceleration = createVector(0, 0);

    this.rotation = 0;

    this.hasRotated = false;

  }

  applyForce(force) {

    let f = p5.Vector.div(force, this.mass);

    this.acceleration.add(f);

  }

  update() {

    this.velocity.add(this.acceleration);

    this.position.add(this.velocity);

    this.acceleration.mult(0);

  }

  checkWaveIntersection(allWaves) {

    let totalWaveY = 0;

    for (let waveSet of allWaves) {

      for (let wave of waveSet) {

        totalWaveY += wave.calculate(this.position.x);

      }

    }

    totalWaveY += 300;

    let threshold = 5;

    if (!this.hasRotated && abs(this.position.y - totalWaveY) < threshold) {

      this.hasRotated = true;

      this.rotation = HALF_PI;

    }

  }

  display() {

    push();

    translate(this.position.x, this.position.y);

    rotate(this.rotation);

    image(egeimg, -egeimg.width/2, -egeimg.height/2);

    pop();

  }

}

​

class Wave {

  constructor(amp, period, phase) {

    this.amplitude = amp;

    this.period = period;

    this.phase = phase;

  }

  calculate(x) {

    return sin(this.phase + TWO_PI * x/this.period) * this.amplitude;

  }

}

​

let waves = []; 

let egeimg;

let ege;

let waveColors = ["lightblue", "rgb(20, 0, 255)", "rgb(55, 180, 200)"];

let waveSpeeds = [0.08, 0.06, 0.04];

let waveParams = [

  {amp: [10, 20], period: [100, 600]},

  {amp: [8, 15], period: [80, 400]},

  {amp: [5, 12], period: [60, 300]}

];

​

function preload() {

  egeimg = loadImage('ege.png');

}

​

function setup() {

​

  createCanvas(500, 400);

​

  ege = new Ege();

  for (let i = 0; i < 3; i++) {

    waves[i] = [];

    for (let j = 0; j < 5; j++) {

      waves[i][j] = new Wave(

        random(waveParams[i].amp[0], waveParams[i].amp[1]),

        random(waveParams[i].period[0], waveParams[i].period[1]),

        random(TWO_PI)

      );

    }

  }

  egeimg.resize(0, 70);

}

​

function draw() {

  background(0, 20);

     fill("white");

  text('Click mouse to save Ege', width/2 -50, 20);

  let gravity = createVector(0, 0.005);

  ege.applyForce(gravity);

  if (mouseIsPressed) {

    let up = createVector(0, -0.1);

    ege.applyForce(up);

  }

  ege.update();

  ege.checkWaveIntersection(waves);

  ege.display();

​

  for (let i = 0; i < waves.length; i++) {

    for (let x = 0; x < width; x += 1) {

      let y = 0;

      for (let wave of waves[i]) {

        y += wave.calculate(x);

      }

      noStroke();

      fill(waveColors[i]);

      ellipse(x, y + 300, 1);

    }

  }

​

  for (let i = 0; i < waves.length; i++) {

    for (let wave of waves[i]) {

      wave.phase += waveSpeeds[i];

    }

  }

}