Shannon Ha – Project 11 – Generative Landscape

sketch

//Shannon Ha
//Section D
//sha2@andrew.cmu.edu
//Project 11 Generative Landscape

var terrainSpeed = 0.0001;
var terrainDetail = 0.006;
var martians = [];

function setup() {
    createCanvas(480, 300);

    for (var i = 0; i < 4; i++){ //create initial collection of martians displayed on screen.
        var rx = random(width);
        martians[i] = makeMartian(rx);
    }
    
    for (var i = 0; i < stars; i++) { //randomly generates star size and position.
    sX.push(random(0, width)); // x position of star
    sY.push(random(0, height / 3)); // y position of star
    starSize.push(random(0.1, 1)); // star size
    }
    frameRate(15);
}

function draw() { // calls all the objects
    background(43, 14, 7);
    drawStars();
    drawMountain();
    drawMountainB();

    //calls martian objects
    updateAndDisplayMartians();
    removeMartians();
    addMartians();

    // draw distant planet A
    fill(130, 67, 52);
    noStroke();
    ellipse(400, 20, 30, 30);
    // draw distant planet B
    fill(176, 91, 70);
    ellipse(350, 15, 10, 10);
}
var stars = 300; //number of star points
var sX = []; //x position array
var sY = []; //y position array
var starSize = [];// star size array

function drawStars() {
    noStroke();
    for (var i = 0; i < stars; i++) { // draws the stars
        stroke(random(100, 255)); // randomize grayscale for stroke to give the twinkle effect
        strokeWeight(starSize[i]);
        point(sX[i], sY[i], 10, 10);
    }
}

function drawMountain(){ //background terrain
    push();
    fill(79, 16, 0);
    noStroke();
    beginShape();
    vertex(0, height);
    for (var x = 0; x < width; x++) {
        var t = (x * terrainDetail) + (millis() * terrainSpeed);// adjusts flatness of terrain
        var y = map(noise(t), 0,1, height/2.5, height * 0.2);
        vertex(x, y);
    }
    vertex(width, height);
    endShape();
    pop();
}

function drawMountainB(){ //terrain in the front
    push();
    fill(138, 31, 4);
    noStroke();
    beginShape();
    vertex(0, height);
    for (var x = 0; x < width; x++) {
        var t = (x * terrainDetail) + (millis() * terrainSpeed * 2);
        var y = map(noise(t), 0,1, height , height * 0.1);
        vertex(x, y);
    }
    vertex(width, height);
    endShape();
    pop();
}

function updateAndDisplayMartians(){
    // Update the martians' positions, and display them
    for (var i = 0; i < martians.length; i++){
        martians[i].move();
        martians[i].display();
    }
}

function removeMartians(){ // removes all martians that go off the canvas.
    var martiansToKeep = [];
    for (var i = 0; i < martians.length; i++){
        if (martians[i].x + martians[i].breadth > 0) {
            martiansToKeep.push(martians[i]);
        }
    }
    martians = martiansToKeep; // remembers the remaining martians on canvas.
}

function addMartians(){ // adds new martians onto canvas
    var newMartiansLikelihood = 0.017;
if (random(0,1) < newMartiansLikelihood) {
    martians.push(makeMartian(0));
}
}

function martianMove() { // allows the martians to glide across screen
    this.x += this.speed;
}

function displayMartian() { //draws the martian.
    fill(12, 63, 117);
    noStroke();
    push();
    translate(this.x, height - 60);
    // body
    ellipse(20, 30, this.breadth, this.height);
    // white part of eye
    fill(255);
    ellipse(20, 20, this.breadth / 2, this.breadth / 2);
    //blue part of eye
    fill(105, 160, 219);
    ellipse(20, 20, 10, 10);
    //antennas
    stroke(105, 160, 219);
    strokeWeight(4);
    line(10, 10, 5, 5);
    line(30, 10, 35, 5);
    //ends of antenna
    fill(random(255), random(100), random(200));
    noStroke();
    ellipse(5, 5, 10, 10);
    ellipse(35, 5, 10, 10);

    pop();
}

function makeMartian(birthLocationX){ // martian characteristics
    var alien = {x: birthLocationX,
                breadth: 30,
                height: 50,
                speed: random(3, 7),
                move: martianMove,
                display: displayMartian};
    return alien;
}

For this project, I wanted to create a fictional landscape of Mars, so I took a bit of inspiration from the iconic Britney Spears’ Oops I did it again Music Video (I wanted to add an astronaut but I didn’t know how to remove the background of a picture I found online) and added my own twist by putting in blue aliens that greet you with their antennas as you pass glance over the Martian landscape. I had a lot of fun making this project as it helped me understand the use of objects and characteristics better!