Creative Coding Art Source Code  (Out of Print Collection at 07/20/2021) As you purchase and own this NFT of interactive Art source code, you are authorized to integrate or build upon it in personal or commercial projects such as websites, web apps, and web templates with proper credit to original author Che-Yu Wu. With verified NFT, you can get support from the original artist - Che-Yu Wu (cyw345@nyu.edu) if you need technical support for this piece of code.

var colors = "eee-ea3737-233d4d-fe7f2d-fcca46-a1c181-619b8a".split("-").map(a=>"#"+a)
var sounds=[]
function easeOutElastic(x) {
const c4 = (2 * Math.PI) / 3;

return x === 0
  ? 0
  : x === 1
  ? 1
  : pow(2, -10 * x) * sin((x * 10 - 0.75) * c4) + 1;
}

function easeOutExpo(x) {
return x === 1 ? 1 : 1 - pow(2, -10 * x);
}

class Fish{
	constructor(args){
		this.p = args.p || createVector(0,0)
		this.v = args.v || createVector(0,0)
		this.a = args.a || createVector(0,0)
		this.r = args.r || 50
		this.id = random(100)
		this.rotFreq = random(30,50)
		this.color1 = args.color1 || random(colors)
		this.color2 = args.color2 || random(colors)
		this.targetR = this.r 
		this.originalR = this.r 
		this.sound = args.sound || random(sounds)
		this.activeRatio = 1
		this.collideTs = 0
		this.targetActiveRatio = 0
		this.lerpSpeed = 0.01
		this.ts=0
		this.colliding=false
		this.lastColliding=false
	}
	draw(){
		
		drawingContext.shadowColor = color(0,80)
		// drawingContext.shadowOffsetX = 5
		drawingContext.shadowOffsetY = 5
		drawingContext.shadowOffsetY = 5
		push()
			translate(this.p)
			rotate( sin(this.id+frameCount/this.rotFreq)/10)
			scale(1,0.95)
			if (this.v.x>0){
				scale(-1,1)
			}
			noStroke()
			//spikes
		
			push()
			fill(255)
			rotate(-this.activeRatio*PI/10 + sin(this.id+frameCount/this.rotFreq))

			for(var i=0;i<20;i++){
				rotate(PI/10)
				let spikeAnimationRatio= map(this.activeRatio-i/20,0,2,0,1,true)
				triangle(this.activeRatio*this.r,-4,
								 easeOutExpo(spikeAnimationRatio)*(this.r)*2,0,
								 this.activeRatio*this.r,4)
			}
			pop()
		
			push()
			//body
				fill(this.color1)
				arc(0,0,this.r*2,this.r*2,0,PI,CHORD)
				fill(this.color2)
				arc(0,0,this.r*2,this.r*2,PI,2*PI,CHORD)
				fill(this.color1)
				arc(0,-1,this.r/3,this.r/3,0,PI,CHORD)
				stroke(255,100)
				strokeWeight(2)
		drawingContext.shadowColor = color(0,0)
				for(var i=0;i<this.r;i+=this.r/3){
					for(var o=0;o<3;o++){
						stroke(255)
						push()
						translate(5+i+(o%2==0?-this.r/6:0),-o*this.r/3)
							line(0,0,this.r/8,-this.r/8)
							line(0,0,this.r/8,this.r/8)
						pop()
					}
				}
			pop()
		
			//eye
			let openEye = this.activeRatio>0.5?1:0
			let eyeR = sqrt(this.r)*6/(2-openEye/8)+5
			fill(255)
			arc(-this.r*0.4,-this.r*0.4,
					eyeR,eyeR,0,PI+openEye*PI)
				drawingContext.shadowColor = color(0,0)
			
			fill(0)
			arc(-this.r*0.4,-this.r*0.4,
					eyeR/2,eyeR/2,0,PI+openEye*PI)
			
		
			//fin
			push()
				fill(255)
				rotate(sin(frameCount/8)/2 )
				triangle(0,0,
								 this.r/1.8,-this.r/2.4,
								 this.r/1.8,this.r/2.4)
			pop()
		
			
			//tail
			push()
				translate(this.r*0.95,0)
				fill(this.color1)
				rotate(sin(frameCount/4)/2 )
				triangle( 0,0,
								 this.r/3,-this.r/3,
								 this.r/3,this.r/3)
			pop()
		
		pop()
	}
	update(){
		this.p.add(this.v)
		this.v.add(this.a)
		this.v.mult(0.97)
		this.v.x+=noise(this.p.x/10)/10
		this.v.y+=cos(this.p.x/10+1000+this.id+frameCount/100)/10
		this.a.mult(0.95)
		this.activeRatio = lerp(this.activeRatio,this.targetActiveRatio,this.lerpSpeed )
		this.r = lerp(this.r,this.targetR,0.05)
		this.lastColliding = this.colliding

		if (dist(mouseX,mouseY,this.p.x,this.p.y)<this.r || this.colliding){
			this.targetActiveRatio=1
			this.lerpSpeed =0.2
			this.targetR = this.originalR*1.5
			this.ts =frameCount
			this.a.x =(noise(this.id+frameCount/10,this.p.x/10,this.p.y/10)-0.5)
			this.a.y =(noise(this.id+50000+frameCount/10,this.p.x/10,this.p.y/10)-0.5)
		}else{
			this.targetActiveRatio=0
			this.targetR = this.originalR*1
			this.lerpSpeed =0.1
		}
		
		if (this.p.x>width+25){
			this.p.x = -20
		}
		
		if (this.p.x<-20){
			this.p.x = width+25
		}
		
		if (this.p.y>height+25){
			this.p.y = -20
		}
		
		if (this.p.y<-20){
			this.p.y = height+25
		}
		// if (this.colliding){

		// }
	}
}

let fishArray = []
let bubbles = []

function preload(){
	let a = loadSound("clarinet_D4_025_fortissimo_normal.mp3")	
	let b = loadSound("clarinet_F4_025_fortissimo_normal.mp3")
	let c = loadSound("clarinet_A4_025_fortissimo_normal.mp3")
	let d = loadSound("clarinet_C5_025_fortissimo_normal.mp3")
	sounds.push(a,b,c,d)
}

let overAllTexture
function setup() {
	createCanvas(800,800);
	background(100);
	for(var i=0;i<25;i++){
		let c = random(colors)
		let c2 = random(colors.filter(a=>a!=c))
		let f = new Fish({
			p: createVector(random(width),random(height)),
			v: p5.Vector.random2D(),
			r: random(15,55),
			color1: c,
			color2: c2,
			color3: random(colors),
			color4: random(colors),
			sound: random(sounds)
		})
		fishArray.push(f)
	}
	
	overAllTexture=createGraphics(width,height)
	overAllTexture.loadPixels()
	// noStroke()
	for(var i=0;i<width+50;i++){
		for(var o=0;o<height+50;o++){
			overAllTexture.set(i,o,color(100,noise(i/3,o/3,i*o/50)*random([0,30,60])))
		}
	}
	overAllTexture.updatePixels()
}

function draw() {
	fill(0)
	rect(0,0,width,height)
	
	let stColor =color(59, 138, 221)
	let edColor =color(12, 28, 59)
	for(var o=-1;o<10;o++){
		noStroke()
		let midColor = lerpColor(stColor,edColor,o/10)
				
		push()
			translate(0,o*height/10)
			fill(midColor)
			beginShape()
			vertex(0,150)
			for(var i=0;i<width;i+=2){
				vertex(i,sin(i/(30+noise(o,frameCount/100)*100)+o+cos(o+frameCount/10))*30)
			}
			vertex(width,150)
			endShape(CLOSE)
		pop()

	}
	fishArray.forEach(fish=>{
		fish.update()
		fish.draw()
		fish.colliding=false
			
		if (random()<0.03){
			bubbles.push({
				p: fish.p.copy(),
				v: createVector(0,random(-0.5,-5)),
				r: random(1,15),
				opacity: random(0.1,200)
			})
		}
	})
	
	drawingContext.shadowColor = color(0,0)
	bubbles.forEach(b=>{
		fill(255,b.opacity)
		ellipse(b.p.x + noise(b.p.y/20)*b.r*2,b.p.y,b.r)
		b.p.y+=b.v.y
	})
	bubbles = bubbles.filter(b=>b.p.y>-10)
	
	fishArray.forEach(fish=>{
		fishArray.forEach(fish2=>{
			if (fish!==fish2){
				if (fish.p.dist(fish2.p)<(fish.r+fish2.r)/1){
					
					if (random()<0.01){
						fish.sound.setVolume(0.3)
						fish.sound.play()
					}
					if (random()<0.01){
						fish2.sound.setVolume(0.3)
						fish2.sound.play()
					}
					fish.colliding=true
					fish2.colliding=true
					
				}
				
				if (fish.p.dist(fish2.p)<(fish.r+fish2.r)/1.5){
				
					let delta = fish2.p.copy().sub(fish.p)
					fish.v.sub(delta.mult(0.2).setMag(2))
					fish2.v.add(delta.mult(0.2).setMag(2))
				}
			}

		})
	})
	push()
		blendMode(MULTIPLY)
		image(overAllTexture,0,0)
	pop()
	// ellipse(mouseX, mouseY, 20, 20);
}