Han Yu Project 10 Landscape

sketch

// Han Yu
// Section D
// hyu1@andrew.cmu.edu
// Project 10 Generative Landscape

var terrainSpeed = 0.0005;
var terrainDetail = 0.01;
var terrainD1 = 0.0005;
var terrainS1 = 0.0002;

var fish1 = "https://i.imgur.com/pw06Fwc.png";
var fish = [];
var fishy1;

function preload() {
	fishy1 = loadImage(fish1);
}

function setup() {
    createCanvas(480, 300);
    //create an initial collection of fish
    for (var i=0; i<10; i++) {
    	var rx = random(width*5);
    	fish[i] = makeFish(rx);
    }
    
    frameRate(10);
}
 
function draw() {
    background(255);
    //sun
    noStroke();
    fill(252,163,41);
    ellipse(80, 60, 70, 70);

    //mountain
    noFill(0); 
    stroke(135,120,108)
    beginShape(); 
    for (var x = 0; x < width; x++) {
        var t = (x * terrainDetail) + (millis() * terrainSpeed);
        var y = map(noise(t),0,1,20,height)-height/4;
                
        vertex(x, height);
        vertex(x, y); 
    }
    endShape();
    fill(135,120,108,100);
    noStroke();
    
    //water-top
    beginShape(); 

    stroke(119,209,249,150);
    for (var x1 = 0; x1 < width; x1++) {
        var t1 = (x1 * terrainD1) + (millis() * terrainS1); 
        var y1 = map(noise(t1),0,1,20,height);
        vertex(x1, height);
        vertex(x1,y1);
    }
    endShape();

    //water-bottom
	beginShape(); 

    stroke(119,209,259);
    for (var x1 = 0; x1 < width; x1++) {
        var t1 = (x1 * terrainD1) + (millis() * terrainS1); 
        var y1 = map(noise(t1),0,1,28,height);
        vertex(x1, height);
        vertex(x1,y1);
    }
    endShape();

    //fish
    push();
    translate(0.1 * width, 0.1 * height); 
    scale(0.8);

    scale(0.2,0.2);
    
    updateAndDisplayFish();
    addNewFishWithProbability();

}

function updateAndDisplayFish() {
	for (var i = 0; i < fish.length; i++) {
		fish[i].move();
		fish[i].display();
	}
}


function addNewFishWithProbability() {
	var newFishLikelihood = 0.05;
	if (random(1) < newFishLikelihood) {
		fish.push(makeFish(-300));
	}
}

function fishMove() {
	this.x += this.speed*(1/this.size);
}

function fishDisplay() {
	push();
	scale(this.size, this.size);
	translate(this.x*(1/this.size), this.y*(1/this.size));

	image(fishy1,0,0);
	pop();
}


function makeFish(birthLocationX) {

    var fishy = {x: birthLocationX,
    		size: random(0.3, 0.6),
    		y: random(0.8*height*(1/0.2), height*(1/0.2)),
            speed: random(1,5),
            move: fishMove,
            display: fishDisplay};
    return fishy;
}

I started out thinking to do a project on natural landscape with mountain, water and grassland. But as I dived into the project, I found the overall scene rather dull and lifeless so I decided to focus on the underwater scene with fish instead.