Created
February 3, 2021 21:25
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bouncy balls
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let numBalls = 13; | |
let spring = 1.01; | |
let balls = []; | |
function setup() { | |
createCanvas(720, 400); | |
for (let i = 0; i < numBalls; i++) { | |
balls[i] = new Ball( | |
random(width), | |
random(height), | |
random(30, 70), | |
i, | |
balls | |
); | |
} | |
noStroke(); | |
fill(255, 204); | |
} | |
function draw() { | |
background(0); | |
balls.forEach(ball => { | |
ball.collide(); | |
ball.move(); | |
ball.display(); | |
}); | |
} | |
class Ball { | |
constructor(xin, yin, din, idin, oin) { | |
this.x = xin; | |
this.y = yin; | |
this.vx = 0; | |
this.vy = 0; | |
this.diameter = din; | |
this.id = idin; | |
this.others = oin; | |
} | |
collide() { | |
for (let i = this.id + 1; i < numBalls; i++) { | |
// console.log(others[i]); | |
let dx = this.others[i].x - this.x; | |
let dy = this.others[i].y - this.y; | |
let distance = sqrt(dx * dx + dy * dy); | |
let minDist = this.others[i].diameter / 2 + this.diameter / 2; | |
// console.log(distance); | |
//console.log(minDist); | |
if (distance < minDist) { | |
//console.log("2"); | |
let angle = atan2(dy, dx); | |
let targetX = this.x + cos(angle) * minDist; | |
let targetY = this.y + sin(angle) * minDist; | |
let ax = (targetX - this.others[i].x) * spring; | |
let ay = (targetY - this.others[i].y) * spring; | |
this.vx -= ax; | |
this.vy -= ay; | |
this.others[i].vx += ax; | |
this.others[i].vy += ay; | |
} | |
} | |
} | |
move() { | |
this.x += this.vx; | |
this.y += this.vy; | |
if (this.x + this.diameter / 2 > width) { | |
this.x = width - this.diameter / 2; | |
this.vx *= -1; | |
} else if (this.x - this.diameter / 2 < 0) { | |
this.x = this.diameter / 2; | |
this.vx *= -1; | |
} | |
if (this.y + this.diameter / 2 > height) { | |
this.y = height - this.diameter / 2; | |
this.vy *= -1; | |
} else if (this.y - this.diameter / 2 < 0) { | |
this.y = this.diameter / 2; | |
this.vy *= -1; | |
} | |
} | |
display() { | |
ellipse(this.x, this.y, this.diameter, this.diameter); | |
} | |
} |
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