Xiaoying Meng Project 10 Landscape

sketch

//Xiaoying Meng
//B
//xiaoyinm@andrew.cmu.edu
//Project 10
var ghosts = [];
var frames = [];

//loading background pictures
function preload(){

    var filenames = [];
    filenames[0] = "https://i.imgur.com/UFAJ1Wu.png";
    filenames[1] = "https://i.imgur.com/snYvk3n.png";
    filenames[2] = "https://i.imgur.com/WhWuQcd.png";
    filenames[3] = "https://i.imgur.com/u4YZIhW.png";
    filenames[4] = "https://i.imgur.com/WhWuQcd.png";
    filenames[5] = "https://i.imgur.com/snYvk3n.png";

    for ( var a = 0; a < filenames.length; a++){
        frames.push(loadImage(filenames[a]));
    }
}
function setup() {
    createCanvas(480, 480); 
    frameRate(10);
    // initial collection of ghosts
    for (var i = 0; i < 10; i++){
        var rx = random(width);
        ghosts[i] = makeghost(rx);
    }
}


function draw() {
//display pictures to create motion
    push();
    scale(0.5);
    image(frames[frameCount % 6], -200,10);
    pop();

    updateAndDisplayghosts();
    removeghostsThatHaveSlippedOutOfView();
    addNewghostsWithSomeRandomProbability(); 


}


function updateAndDisplayghosts(){
    // Update ghost positions
    for (var i = 0; i < ghosts.length; i++){
        ghosts[i].move();
        ghosts[i].display();
    }
}


function removeghostsThatHaveSlippedOutOfView(){

    var ghostsToKeep = [];
    for (var i = 0; i < ghosts.length; i++){
        if (ghosts[i].x + ghosts[i].gWidth > 0) {
            ghostsToKeep.push(ghosts[i]);
        }
    }
    ghosts = ghostsToKeep;
}


function addNewghostsWithSomeRandomProbability() {
    // With a very tiny probability, add a new ghost to the end.
    var newghostLikelihood = 0.005; 
    if (random(0,1) < newghostLikelihood) {
        ghosts.push(makeghost(width));
    }
}


// move ghosts
function ghostMove() {
    this.x += this.speed;
}
    

// Draw ghosts
function ghostDisplay() {
    var ghostHeight = this.gHeight * 70; 

    push();
    fill(255,255,255,170); 
    noStroke(0);
    translate(this.x, height -400);
    //enlarge ghosts
    scale(1.5);

    //create ghost body
    beginShape();
    curveVertex(this.gWidth/8,ghostHeight/5);
    curveVertex(this.gWidth/8,ghostHeight/5);
    curveVertex(this.gWidth/5-10,ghostHeight/5+30);
    curveVertex(this.gWidth/5+5,ghostHeight/5+20);
    curveVertex(this.gWidth/5+25,ghostHeight/5+40);
    curveVertex(this.gWidth/5+50,ghostHeight/5);
    curveVertex(this.gWidth/5+100,ghostHeight/5);
    curveVertex(this.gWidth/5+80,ghostHeight/5-70);
    curveVertex(this.gWidth/5+50,ghostHeight/5-100);
    curveVertex(this.gWidth/5+25,ghostHeight/5-100);
    curveVertex(this.gWidth/5+5,ghostHeight/5-70);
    curveVertex(this.gWidth/8,ghostHeight/5);
    curveVertex(this.gWidth/8,ghostHeight/5);
    endShape();

    //creat ghost eyes and mouth
    fill(0,0,0,170);
    ellipse(this.gWidth/5+50,ghostHeight/5-70,this.gWidth/5+5,this.gWidth/5+5);
    ellipse(this.gWidth/5+30,ghostHeight/5-70,this.gWidth/5+5,this.gWidth/5+5);
    ellipse(this.gWidth/5+40,ghostHeight/5-20,this.gWidth/5+5,this.gWidth/5+20);


    pop();
}


function makeghost(birthLocationX) {
    var ghost = {x: birthLocationX,
                gWidth:random(70,80),
                speed: -1.0,
                gHeight:random(2,10),
                move: ghostMove,
                display: ghostDisplay}
    return ghost;
}

Since Halloween just passed, I thought I’d do something spooky. So I thought about ghosts. I found a gif of Simpson “can’t fall asleep” and I thought it was perfect for it.