Category: SectionB

/* Evan Stuhlfire
 * estuhlfi@andrew.cmu.edu Section B
 * Project-10:  Sonic Story - One Night on the Farm 
Assignment-10:  Sonic Story 
One Night on the Farm 
One night on the farm, the farmer left the animals 
out. The crickets were chirping and the chickens were
clucking. A whiring hum was heard and an alien space ship appeared.
The alien first abducted the sheep who let out a surprised "baa" as he
rose into the air and shrunk. The pig was next. He let out a startled
"oink" as he was lifted away from his mud. Then it was the cows turn. 
He let out a shocked "moo" before being whisked away. The 
space ship left with its new specimens, and the crickets chirped
and the chickens clucked some more.

The farm images are liscensed from Adobe stock images. The sounds used are from freesound.org and edited with Audacity.
The sounds are used under the Creative Commons liscense. The owners did not 
want attribution. The sounds are:
crickets.wav - crickets chirping, cluckcluck.wav - chickens clucking,
spaceShip.wav - space ship sounds, moo.wav - a cow, baa.wav - a sheep,
oink.wav - a pig.
 */

var farmImg = [];   // an array to store the images
var farmObjArray = []; // array to store images

// sound variables
var crickets;
var cluck;
var baa;
var moo;
var oink;
var spaceShip;

// starting sky and foreground colors
var rNight = 50;
var gNight = 100;
var bNight = 150;
var rFore = 50;
var gFore = 160;
var bFore = 80;
var moon = 100;
// position of the moon
var xMoon;
var yMoon;

// map to array indexes
var fence = 0;
var barn = 1;
var hay = 2;
var cow = 3;
var pig = 4;
var sheep = 5;
var chicken = 6; 
var rooster = 7;
var ship = 8;

function preload(){
    // These URLs are images stored on imgur 
    // images liscensed from Adobe Stock images
    // preload farm images
    var filenames = [];
    filenames[fence] = "https://i.imgur.com/bbBOrZ7.png"; 
    filenames[barn] = "https://i.imgur.com/inS5Xdt.png"; 
    filenames[hay] = "https://i.imgur.com/IXPEVak.png"; 
    filenames[cow] = "https://i.imgur.com/8XjQyMt.png"; 
    filenames[pig] = "https://i.imgur.com/7VPvVRB.png"; 
    filenames[sheep] = "https://i.imgur.com/vIFlqDY.png"; 
    filenames[chicken] = "https://i.imgur.com/vdTxUKf.png"; 
    filenames[rooster] = "https://i.imgur.com/SCYoQoX.png"; 
    filenames[ship] = "https://i.imgur.com/lAHddxj.png"
    // load farm images
    for (var i = 0; i < filenames.length; i++) {
        farmImg[i] = loadImage(filenames[i]);
    }

    // load sounds
    crickets = loadSound("https://courses.ideate.cmu.edu/15-104/f2022/wp-content/uploads/2022/11/crickets2.wav");
    cluck = loadSound("https://courses.ideate.cmu.edu/15-104/f2022/wp-content/uploads/2022/11/cluckcluck.wav");
    baa = loadSound("https://courses.ideate.cmu.edu/15-104/f2022/wp-content/uploads/2022/11/baa.wav");
    moo = loadSound("https://courses.ideate.cmu.edu/15-104/f2022/wp-content/uploads/2022/11/moo.wav");
    oink = loadSound("https://courses.ideate.cmu.edu/15-104/f2022/wp-content/uploads/2022/11/oink.wav");
    spaceShip = loadSound("https://courses.ideate.cmu.edu/15-104/f2022/wp-content/uploads/2022/11/spaceShip.wav");

}

function stepImage() {
    // // move and grow the space ship to get the sheep
    if(this.imageNum == ship & this.moving) {
        if(this.target == sheep) {
            if(this.x < width/4) {
                this.x += this.speed;
            }
            if(this.y < height/2.5) {
                this.y += this.speed;
            }
            if(this.ySize <= 100) {
                this.ySize += this.speed;
            }
            if(this.xSize <= 200) {
                this.xSize += this.speed;
            } else {
                if(this.drawBeam) {
                    drawBeam(this.x, this.y, this.target); 
                }
            }
        } else if(this.target == pig) {
            // move the space ship to get the pig
            this.drawBeam = true; // turn the beam back on

            if(this.ySize >= 80) {
                this.ySize -= this.speed;
            }
            if(this.xSize >= 180) {
                this.xSize -= this.speed;
            }

            if(this.y > height/3) {
                this.y -= this.speed;
            }
            if(this.x <= width/2) {
                this.x += this.speed;
            } else {
                if(this.drawBeam) {
                    drawBeam(this.x, this.y, this.target); 
                }
            }
        } else if(this.target == cow) {
            // move the space ship to get the cow
            this.drawBeam = true; // turn the beam back on

            if(this.ySize <= 120) {
                this.ySize += this.speed;
            }
            if(this.xSize <= 240) {
                this.xSize += this.speed;
            }

            if(this.y < height/1.8) {
                this.y += this.speed;
            }
            if(this.x >= width/4) {
                this.x -= this.speed;
            } else {
                // the ship is in the correct location for the beam
                if(this.drawBeam) {
                    drawBeam(this.x, this.y, this.target); 
                }
            }
        } else if(this.target < cow) {
            // fly away
            if(this.ySize >= 0) {
                this.ySize -= this.speed;
            }
            if(this.xSize >= 0) {
                this.xSize -= this.speed;
            }
            if(this.y > 0) {
                this.y -= this.speed;
            }
            if(this.x <= width) {
                this.x += this.speed;
            }
        }
    } 

    // when an animal is being abducted it shrinks and rises into the ship
    if(this.imageNum == farmObjArray[ship].target & this.moving) {
        // decrease y to rise into the ship
        if(this.y >= farmObjArray[ship].y) {
            this.y -= this.speed;
        } else {
            // turn the beam off and set target to pig
            farmObjArray[ship].drawBeam = false;

            // don't decrease the target below the cow index
            if(farmObjArray[ship].target >= cow) {
                farmObjArray[ship].target--;
            }
            
            // stop drawing this image
            this.moving = false;
            this.drawOn = false;
        }
        
        // shrink
        if(this.xSize > 0) {
            this.xSize *= .95;
        }
        if (this.ySize > 0) {
            this.ySize *= .95;
        } 
        if(this.imageNum == sheep & frameCount % 15 == 0) {
            baa.play();
        } else if(this.imageNum == pig & frameCount % 15 == 0) {
            oink.play();
        } else if(this.imageNum == cow & frameCount % 12 == 0) {
            moo.play();
        }

    }
}

function drawImage() {
    // draw image
    if(this.drawOn){
       image(farmImg[this.imageNum], this.x, this.y, this.xSize, this.ySize);
    } 
}

// Constructor for each farm image
function makeObj(cx, cy, imNum, xs, ys) {
    var c = {x: cx, y: cy, xSize: xs, ySize: ys, 
             imageNum: imNum,
             moving: false,
             drawBeam: true,
             target: sheep,
             speed: 5,
             drawOn: true,
             stepFunction: stepImage,
             drawFunction: drawImage
         }
    return c;
}

function setup() {
    createCanvas(480, 480);
    // set farm colors
    background(rNight, gNight, bNight);
    foreground(rFore, gFore, bFore);
    // set initial moon position
    xMoon = width + 25;
    yMoon = height/2.25;
    xShip = width/4;
    yShip = height/2 + 50;

    imageMode(CENTER);
    // create array of farm objects
    createFarmObjs(); 

    frameRate(10);
    useSound();
}

function soundSetup() { // setup for audio generation
    crickets.setVolume(0.1);
    cluck.setVolume(0.3);
    baa.setVolume(0.3);
    moo.setVolume(0.5);
    oink.setVolume(0.3);
    spaceShip.setVolume(0.5);
}

function draw() {
    noStroke();
    background(rNight, gNight, bNight);
    foreground(rFore, gFore, bFore);
    makeSounds();

    var currentImage;
    // loop over farm images and draw them
    for(var i = 0; i < farmObjArray.length; i++) {
        currentImage = farmObjArray[i];
        // draw the farm
        currentImage.stepFunction();
        currentImage.drawFunction();
    }

    // darken to night sky
    fadeNightSky();        

}

function makeSounds() {
    // make sounds at frameCount intervals
    // play crickets
    if(frameCount >5 & frameCount < 350 && frameCount % 25 == 0) {
        crickets.play();
    } 
    // play cluck cluck
    if ((frameCount > 24 & frameCount < 350 && frameCount % 50 == 0)) {
        cluck.play();
    }
    if(frameCount > 24 & frameCount < 200 && frameCount % 25 == 0) {
        spaceShip.play();
    }

    if(frameCount > 400){
        // stop all sounds
        crickets.stop();
        cluck.stop();
        spaceShip.stop();
        baa.stop();
        moo.stop();
        oink.stop();

        // stop looping
        noLoop();
    }
}

function createFarmObjs() {
    // create objects for farm: fence, barn, hay
    // set initial positions xPos and yPos
    var xPos = width/1.25;
    var yPos = height/2;

    // set initial size
    var xs = 125;
    var ys = 125;

    // create farm objects
    farmObjArray[fence] = makeObj(width/2, yPos + 20, fence, xs * 5, 
        ys * .25);
    farmObjArray[barn] = makeObj(xPos, yPos, barn, xs, ys);
    farmObjArray[hay] = makeObj(xPos + 50, yPos + 50, hay, xs/2, ys/2);
    farmObjArray[cow] = makeObj(width/4, height/1.2, cow, 100, 70);
    farmObjArray[pig] = makeObj(width/2, height/1.68, pig, 55, 45);
    farmObjArray[sheep] = makeObj(width/4, height/1.65, sheep, 30, 50);
    farmObjArray[chicken] = makeObj(width/1.2, height/1.35, 
        chicken, 25, 35);
    farmObjArray[rooster] = makeObj(width/1.3, height/1.45, 
        rooster, 30, 40);
    farmObjArray[ship] = makeObj(0, height/8, ship, 20, 1);
}

function drawBeam(x, y, target) {
    // draw beam
    fill(240, 250, 240, 80);
    triangle(x, y, x + 65,
        farmObjArray[target].y + 40, 
        x - 65,
        farmObjArray[target].y + 40);

    // set target to moving
    farmObjArray[target].moving = true;
}

function fadeNightSky() {
    // decrease the background colors to darken the sky to night
    var offset = 5;
    rNight -= offset;
    gNight -= offset;
    bNight -= offset;
    rNight = max(0, rNight);
    gNight = max(0, gNight);
    bNight = max(0, bNight);

    // draw moon
    if(rNight == 0) {
        fill(moon);
        ellipse(xMoon, yMoon, 50);
        moon++;
        moon = min(moon, 245);  
        xMoon -= offset;
        yMoon -= offset;
        xMoon = max(width/1.35, xMoon);
        yMoon = max(height/7.75, yMoon);
    }

    // when it is dark start moving space ship
    if(bNight == 0) {
          farmObjArray[ship].moving = true;
    }
}

function foreground(r, g, b) {
    // create lawn and mud puddle for pig
    fill(r, g, b);
    rect(0, height/2, width, height/2);

    fill(90, 80, 15);
    ellipse(width/2 - 10, height/1.6, 150, 25);
}