Project 11: Landscape

// Susie Kim
// susiek@andrew.cmu.edu
// Section A
// Project 11

// set global variables
var landSpeed = 0.001;
var landFlow = 0.005;

var firefly = [];

var fWidth = 50;
var fLeft = 27 - fWidth;

// load in images for background
function preload() {
	feet = loadImage('https://i.imgur.com/VLK5brn.png');
	fruit = loadImage('https://i.imgur.com/NNwEjtA.png');
	cloud = loadImage('https://i.imgur.com/m6zIO0u.png');
}

function setup() {
    createCanvas(400, 480);
	background(29, 51, 81);
    imageMode(CENTER);

    // create fireflies at random locations on canvas
    for (var i = 0; i < 7; i++) {
    	var xLocation = random(20, 380);
    	var yLocation = random(0, 360);
    	firefly[i] = makeFireflies(xLocation, yLocation);
    }
}

function draw() {
	background(29, 51, 81);

	image(cloud, width/2, height/2-65, width-20, height-20); // background cloud image

	// blue water
	fill(147, 169, 209);
	noStroke();
	rect(0, 200, 400, 200);

    // call upon functions to draw land, foreground, and update fireflies
	land();
	createForeground();
	updateFirefly();
}

// draws front foreground porch, feet, and fruit dish
function createForeground() {
	fill(188, 158, 130);
	strokeWeight(1);
	stroke(124, 87, 61);

	// create porch base
	rect(0, 360, 400, 120);
	rect(0, 350, 400, 10);
	rect(0, 0, 30, 355);
	rect(370, 0, 30, 355);

	// insert self-drawn images of feet laying on porch and fruit
	image(feet, 100, 405, 150, 150);
	image(fruit, 300, 410, 125, 125);
}

// draws undulating sand landscape
function land() {
	fill(249, 228, 183);
	stroke(255);
	strokeWeight(8);

	beginShape();
	vertex(0, height);

	// undulating line of sandscape
	for (var x = 0; x < width; x++) {
		var a = (x*landFlow) + (millis()*landSpeed);
		var y = map(noise(a), 0, 1, height*12/20, height*11/20);
		vertex (x, y);
	}

	vertex(width, height);
	endShape();
}

// draws fireflies
function drawFirefly() {
	fill(255, 245, 0, 100);
	noStroke();
	push();

	translate(this.x1, this.y1); // allows fireflies to move depending on function
	scale(this.fireflySize); // allows fireflies to be scalable depending on make function
	ellipse(50, 50, 10, 10);
	ellipse(50, 50, 5, 5);

	pop();
}

// summons fireflies at given location with variables
function makeFireflies(xlocation, ylocation) {
	var makeFirefly = {x1: xlocation,
					   y1: ylocation,
					   fireflySize: random(0.25, 2),
					   speed: -1,
					   move: moveFirefly,
					   draw: drawFirefly}
	return makeFirefly;
}

// makes fireflies move across the page
function moveFirefly() {
	this.x1 += this.speed;
	if (this.x1 <= fLeft) {
		this.x1 += width - fLeft;
	}
}

// updates the array of fireflies
function updateFirefly() {
	for (i = 0; i < firefly.length; i++) {
		firefly[i].move();
		firefly[i].draw();
	}
}