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Jellyfish.html
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Jellyfish.html
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<html>
<head>
<meta charset="utf-8">
<title>Motion</title>
<script>
//---------------CANVAS SET UP-----------------//
window.onload =function background() { //
var canvas = document.createElement("canvas"), //
c = canvas.getContext("2d") //
//
//
//
//canvas sizing //
canvas.width = window.innerWidth; //
canvas.height = window.innerHeight; //
document.body.appendChild(canvas);
document.body.style.cursor = 'none';
//
//---------------------------------------------//
//particle array for big numbers and automation
particles = {};
particleIndex = 0,
particleNum = 1;
tentacles = {};
tentacleIndex = 0,
tentacleNum = 1;
//initial background
c.fillStyle = "black";
c.fillRect(0,0,canvas.width,canvas.height);
//optional color array
//var colorArray = [
//'#DCD6F7',
//'#A6B1E1',
//'#42033D'];
var flap = 0;
var squirt = 1;
var locVarX = 0;
var locVarY = 0;
var alphaCtrl = 0.1;
var frame = 0;
var rads = 0;
var spinX = 0;
var spinY = 0;
document.onkeydown = function(e) {
switch (e.keyCode) {
case 32:
//SPACE
locVarX = 0;
locVarY= 0;
alphaCtrl = .3;
break;
case 65:
//LEFT
break;
case 87:
//UP
flap = 5 * Math.cos(rads/4);
squirt = Math.cos(rads/4)+1.3;
spinX = 5 * Math.cos(rads/4);
spinY = 5 * Math.sin(rads/4);
rads++
break;
case 68:
//RIGHT
break;
case 83:
//DOWN
spinX = 5 * Math.cos(rads/4);
spinY = 5 * Math.sin(rads/4);
rads++;
break;
case 81:
//q
break;
case 69:
//e
break;
}
}
//initiate mouse and add event listener
var mouse = {
x: undefined,
y: undefined
}
window.addEventListener('mousemove',
function(event){
mouse.x = event.x;
mouse.y = event.y;
//console.log(mouse);
});
//---------------------
function Particle(){
particleIndex++;
particles[particleIndex] = this;
this.id = particleIndex;
//give particle slight movement
this.x = mouse.x - 2.5*Math.cos(this.id/30);//canvas.width /2 //- 50 * (Math.cos(this.id/4));
this.y = mouse.y - 2.5*Math.sin(this.id/30);//canvas.height /2 //- 50 * (Math.sin(this.id/4))-200;
//initiate velocity
this.vx = 1;
this.vy = 1;
//initiate radius, growth rate, alpha, and thickness
this.radius = 0.05;
this.radiusGrowth = 1;
this.alpha = 1;
//this.color = "rgba(255,255,255,"+this.alpha+")";
this.thick = 2;
//life span
this.life = 0;
this.maxLife = 30;
this.color = 255;
}
Particle.prototype.draw = function(){
//calculate and update velocity to tend towards center
this.magnitude = Math.sqrt(Math.abs(Math.pow(mouse.x-canvas.width/2,2)+Math.pow(mouse.y-canvas.height/2,2)));
this.vx = (-1 * (2 * Math.cos(this.id/80) - 3)) * (mouse.x-canvas.width/2)/this.magnitude;
this.vy = (1 * Math.sin(this.id/80) + 2) * (mouse.y-canvas.height/2)/this.magnitude;
this.x += this.vx;
this.y += this.vy;
this.vy *= 1.03;
this.vx *= 1.03;
this.life++
if (this.life >= this.maxLife){
delete particles[this.id]
}
//this.radiusGrowth *= 1.2 + ((this.magnitude)/10000); //+ radiusGrowthModifier;
//this.radius += this.radiusGrowth;
//TRIPPY BALL MACHINE ALIEN
//this.radius = (((50*Math.cos((this.life+1)/2)+1) * Math.cos((this.life+1)/2)+1))*this.radiusGrowth;
//this.radiusGrowth *= 0.99 ;// +(this.life))
//tear drop
this.radius =(24+flap)*Math.sqrt(this.life);
if (this.radius <= 0){
this.radius = 0.1;
}
this.color = 50 * Math.sin(this.life/(6*Math.PI)+spinX/(Math.PI)) + 270;
//this.radiusGrowth += ((this.magnitude+100)/10000)*(10*Math.cos(this.life - this.id/20) + 31);
//this.color = Math.floor(50 * Math.cos(this.id/20)+200); // this.magnitude * 2/3;
//change width of specific circle
//if (this.life == 3){
// this.radius = specialVar;
//}
//top right (when mouse is top right)
c.beginPath();
c.arc(canvas.width - Math.abs(this.x - canvas.width),canvas.height - Math.abs(this.y - canvas.height),this.radius,0,Math.PI * 2,false);
c.strokeStyle = "hsla(" + this.color + ",100%,50%," +this.alpha+")";
c.lineWidth = this.thick;
c.stroke();
c.beginPath();
c.arc(Math.abs(this.x - canvas.width),Math.abs(this.y - canvas.height),this.radius,0,Math.PI * 2,false);
c.strokeStyle = "hsla(" + this.color + ",100%,50%," +this.alpha+")";
c.lineWidth = this.thick;
c.stroke();
//Top Left (when mouse is top right)
c.beginPath();
c.arc(Math.abs(this.x - canvas.width),/*Math.abs(this.y-canvas.height/2)*/ canvas.height - Math.abs(this.y - canvas.height),this.radius,0,Math.PI * 2,false);
c.strokeStyle = "hsla(" + this.color + ",100%,50%," +this.alpha+")";
c.lineWidth = this.thick;
c.stroke();
//Bottom Right (when mouse is top right)
c.beginPath();
c.arc(canvas.width - Math.abs(this.x - canvas.width),Math.abs(this.y-canvas.height),this.radius,0,Math.PI * 2,false);
c.strokeStyle = "hsla(" + this.color + ",100%,50%," +this.alpha+")";
c.lineWidth = this.thick;
c.stroke();
//if (this.thick > 0.31)
this.thick *= 0.99;
this.alpha -= .05 ; //* Math.cos(this.id/5) + .03;
}
//tenatacle
function Tentacle(offSetX, offSetY){
tentacleIndex++;
tentacles[tentacleIndex] = this;
this.id = tentacleIndex;
//give particle slight movement
this.x = mouse.x - 2.5*Math.cos(this.id/240);//canvas.width /2 //- 50 * (Math.cos(this.id/4));
this.y = mouse.y - 2.5*Math.sin(this.id/240);//canvas.height /2 //- 50 * (Math.sin(this.id/4))-200;
//initiate velocity
this.vx = 1;
this.vy = 1;
//initiate radius, growth rate, alpha, and thickness
this.radius = 0.05;
this.radiusGrowth = 1;
this.alpha = 1;
this.color = 0;
this.thick = 0.5;
//life span
this.life = 0;
this.maxLife = 100;
this.color = 255;
this.counter = 0;
this.counterTruth = 1;
this.offSetX = offSetX;
this.offSetY = offSetY;
}
Tentacle.prototype.draw = function(){
//calculate and update velocity to tend towards center
this.magnitude = Math.sqrt(Math.abs(Math.pow(mouse.x-canvas.width/2,2)+Math.pow(mouse.y-canvas.height/2,2)));
this.vx = squirt * this.offSetX + (-1 * (2 * Math.cos(this.id/640) - 3)) * (mouse.x-canvas.width/2)/this.magnitude;
this.vy = squirt * this.offSetY + (1 * Math.sin(this.id/640) + 2) * (mouse.y-canvas.height/2)/this.magnitude;
this.x += this.vx;
this.y += this.vy;
this.vx *= 1.01;
this.vy *= 1.01;
this.life++
if (this.life >= this.maxLife){
delete tentacles[this.id]
}
//tear drop
this.radius = -(Math.pow(this.life,2)/(10+locVarX)) + (4*this.life);
if (this.radius <= 0){
this.radius = 0.1;
if (this.life%10 <= squirt){
this.radius = 5*squirt;
}
}
this.color = 50 * Math.cos(this.life/(6*Math.PI)+spinX/(Math.PI)) + 270;
this.counter++;
c.beginPath();
c.arc(canvas.width - Math.abs(this.x - canvas.width),canvas.height - Math.abs(this.y - canvas.height),this.radius,0,Math.PI * 2,false);
c.strokeStyle = "hsla(" + this.color + ",100%,50%," +this.alpha+")";
c.lineWidth = this.thick;
c.stroke();
//Bottom left (when mouse is top right)
c.beginPath();
c.arc(Math.abs(this.x - canvas.width),Math.abs(this.y - canvas.height),this.radius,0,Math.PI * 2,false);
c.strokeStyle = "hsla(" + this.color + ",100%,50%," +this.alpha+")";
c.lineWidth = this.thick;
c.stroke();
//Top Left (when mouse is top right)
c.beginPath();
c.arc(Math.abs(this.x - canvas.width),/*Math.abs(this.y-canvas.height/2)*/ canvas.height - Math.abs(this.y - canvas.height),this.radius,0,Math.PI * 2,false);
c.strokeStyle = "hsla(" + this.color + ",100%,50%," +this.alpha+")";
c.lineWidth = this.thick;
c.stroke();
//Bottom Right (when mouse is top right)
c.beginPath();
c.arc(canvas.width - Math.abs(this.x - canvas.width),Math.abs(this.y-canvas.height),this.radius,0,Math.PI * 2,false);
c.strokeStyle = "hsla(" + this.color + ",100%,50%," +this.alpha+")";
c.lineWidth = this.thick;
c.stroke();
//if (this.thick > 0.31)
this.thick *= 1;
//this.alpha -= .005 ; //* Math.cos(this.id/5) + .03;
}
//new Particle();
setInterval(function(){
c.fillStyle = "rgba(0,0,0,1)";
c.fillRect(0,0,canvas.width,canvas.height);
frame++;
console.log(alphaCtrl);
new Tentacle(1,0);
new Tentacle(-1,0);
new Tentacle(0,1);
new Tentacle(0,-1);
new Tentacle(1,1);
new Tentacle(-1,1);
new Tentacle(1,-1);
new Tentacle(-1,-1);
for (var i in tentacles){
tentacles[i].draw();
}
//if (frame % 2 == 0)
new Particle();
//for (var i = 0; i < particleNum; i++){
// new Particle();
//}
for (var i in particles){
particles[i].draw();
}
}, 5);
};
</script>
</head>
<body style = "overflow:hidden; position:absolute; padding: 0; margin: 0; ">
</body>
</html>