Project 11

var clouds = [];
var xcNoise = [];
var ycNoise = [];
var scNoise = [];
var planes = [];

function setup() {
    createCanvas(480, 480);
//creating initial number of objects
    for (var i = 0; i < 4; i++){
        var rx = random(width);
        clouds[i] = makeClouds(rx);
    }

    for (var i = 0; i < 2; i++){
        var rx = random(width);
        planes[i] = makePlanes(rx);
    }

    for (var i = 0; i < 20; i++) {
        xcNoise[i] = random(-40,40);
        ycNoise[i] = random(-40,40);
        scNoise[i] = random(60,70)
    }

    frameRate(10);
}


function draw() {
    background(200,215,255);

    updateAndDisplayPlanes();
    updateAndDisplayClouds();
    offScreenPlanes();
    offScreenClouds();
    newPlanes();
    newClouds();
}

//making sure objects move across the screen
function updateAndDisplayClouds(){
    for (var i = 0; i < clouds.length; i++){
        clouds[i].move();
        clouds[i].display();
    }
}
function updateAndDisplayPlanes(){
    for (var i = 0; i < planes.length; i++){
        planes[i].move();
        planes[i].display();
    }
}
//removing objects once they're no longer needed
function offScreenClouds(){
    var cloudsToKeep = [];
    for (var i = 0; i < clouds.length; i++){
        if (clouds[i].x + clouds[i].breadth > 0) {
            cloudsToKeep.push(clouds[i]);
        }
    }
    clouds = cloudsToKeep;
}
function offScreenPlanes(){
    var planesToKeep = [];
    for (var i = 0; i < planes.length; i++){
        if (planes[i].x + planes[i].breadth > 0) {
            planesToKeep.push(planes[i]);
        }
    }
    planes = planesToKeep;
}

//different probabilities for adding new objects
function newClouds() {
    var newCloud = 0.0095;
    if (random(0,1) < newCloud) {
        clouds.push(makeClouds(width+100));
    }
}
function newPlanes() {
    var newPlane = 0.007;
    if (random(0,1) < newPlane) {
        planes.push(makePlanes(width+100));
    }
}
//moving the objects across the screen at different speeds
function cloudMove() {
    this.x += this.speed;
}
function planeMove() {
    this.x += this.speed;
}
//creating the actual objects for clouds and planes
function cloudDisplay() {
    fill(255);
    stroke(0);
    push();
    translate(this.x, this.placement);
    stroke(200);
    noStroke();
    fill(255);
    for (let i = 0; i < this.nFloors; i ++) {
        circle(xcNoise[i], ycNoise[i], scNoise[i]);
    }
    pop();
}

function planeDisplay() {
    push();
    stroke(0);
    fill(0);
    translate(this.x, this.placement);
    ellipse(0,0,40,8);
    triangle(2,0,5,-25,-10,0);
    triangle(2,0,5,25,-10,0);
    triangle(15,0,15,8,10,0);
    triangle(15,0,15,-8,10,0);
    pop();
}

//creating the objects for clouds and planes, and their parameters
function makeClouds(birthLocationX) {
    var cld = {x: birthLocationX,
                breadth: 50,
                speed: random(-2,-.8),
                nFloors: round(random(4,10)),
                move: cloudMove,
                display: cloudDisplay,
                placement: random(0,height)}
    return cld;
}
function makePlanes(birthLocationX) {
    var pln = {x: birthLocationX,
                breadth: 20,
                speed: random(-4,-2),
                move: planeMove,
                display: planeDisplay,
                placement: random(0,height)}
    return pln;
}