Ball Physics

Developer
Seth Broweleit
Size
3,149 Kb
Views
12,144
  1. Ball Physics Previews
  2. Ball Physics HTML Codes
  3. Ball Physics CSS Codes
  4. Ball Physics JS Codes

How do I make an ball physics?

Bouncing, colliding rubber balls.. What is a ball physics? How do you make a ball physics? This script and codes were developed by Seth Broweleit on 14 October 2022, Friday.

Ball Physics Previews
IQ Test

Ball Physics - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Ball Physics</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <canvas id="c"></canvas> <script src="js/index.js"></script>
</body>
</html>

Ball Physics - Script Codes CSS Codes

* { padding:0; margin:0;
}
canvas { width:100%; height:100%;
}

Ball Physics - Script Codes JS Codes

/*
By Adam at codepen (https://codepen.io/stuffit) 2012
Rubber bouncing balls.
Still a work in progress.
Reduce BALL_NUMBER if it runs slowly.
*/
var balls = function() { /* configuration */ var BALL_NUMBER = 40; var BALL_SIZE = 60; var BALL_COLOR = "#70CDFF"; var BACK_COLOR = "#f9f9f9"; var GRAVITY_X = 0; var GRAVITY_Y = 0.5; var MOUSE_REPEL = false; var MOUSE_STRENGTH = 1.4; var BOUNCINESS = 0.8; var FRICTION = 1.01; var WALL_STICK = false; var WALL_BOUNCE = true; var STICKINESS = 50; window.requestAnimFrame = (function(){ return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function( callback ){ window.setTimeout(callback, 1000 / 60); }; })();	var pixels, mouseX, mouseY, mouseDown = false, balls = [], canvas, context, width, height;	var loop = function() {	pixels = new Array(width * height); context.fillStyle = BACK_COLOR; context.fillRect(0,0,width,height);	for (var i = 0; i < BALL_NUMBER; i++) {	balls[i].tick();	}	requestAnimFrame(loop);	};	var Ball = function(radius) {	this.x	= Math.random() * width;	this.y	= Math.random() * height;	this.fx = 0;	this.fy = 0;	this.dx = 0;	this.dy = 0;	};	Ball.prototype.tick = function() {	if (mouseDown) {	var dx = this.x - mouseX;	var dy = this.y - mouseY;	var d = Math.sqrt(dx * dx + dy * dy)/(MOUSE_STRENGTH);	if (d < BALL_SIZE * 4) { if(MOUSE_REPEL) { this.dx += dx / d; this.dy += dy / d; } else { this.dx -= dx / d; this.dy -= dy / d; }	}	}	this.fy += GRAVITY_Y;	this.fx += GRAVITY_X;	this.x += this.fx;	this.y += this.fy;	if (this.x < BALL_SIZE * .5) { if(WALL_STICK) { this.x = BALL_SIZE * .5; this.fy /= FRICTION*STICKINESS; } else if(WALL_BOUNCE) { this.x = BALL_SIZE * .5; this.fx = this.fx * (-1) * BOUNCINESS; this.fy /= FRICTION; } else { this.dx += (BALL_SIZE * .5 - this.x); }	}	else if (this.x > width - BALL_SIZE * .5) { if(WALL_STICK) { this.x = width - BALL_SIZE * .5; this.fy /= FRICTION*STICKINESS; } else if(WALL_BOUNCE) { this.x = width - BALL_SIZE * .5; this.fx = this.fx * (-1) * BOUNCINESS; this.fy /= FRICTION; } else { this.dx -= (this.x - width + BALL_SIZE * .5); }	}	if (this.y < BALL_SIZE * .5) { if(WALL_STICK) { this.y = BALL_SIZE * .5; this.fx /= FRICTION*STICKINESS; } else if(WALL_BOUNCE) { this.y = BALL_SIZE * .5; this.fy = this.fy * (-1) * BOUNCINESS; this.fx /= FRICTION; } else { this.dy += (BALL_SIZE * .5 - this.y); }	}	else if (this.y > height - BALL_SIZE * .5) { if(WALL_STICK) { this.y = height - BALL_SIZE * .5; this.fx /= FRICTION*STICKINESS; } else if(WALL_BOUNCE) { this.y = height - BALL_SIZE * .5; this.fy = this.fy * (-1) * BOUNCINESS; this.fx /= FRICTION; } else { this.dy -= (this.y - height + BALL_SIZE * .5); }	}	var inwidth = Math.round(this.x / BALL_SIZE);	var inheight = Math.round(this.y / BALL_SIZE);	for (var a = inwidth - 1; a <= inwidth + 1; a++) {	for (var b = inheight - 1; b <= inheight + 1; b++) {	var g = pixels[b * width + a] || [];	for (j = 0, l = g.length; j < l; j++) {	var that = g[j];	var dx = that.x - this.x;	var dy = that.y - this.y;	var d = Math.sqrt(dx * dx + dy * dy);	if (d < BALL_SIZE && d > 0) {	dx = (dx / d) * (BALL_SIZE - d) * .25;	dy = (dy / d) * (BALL_SIZE - d) * .25;	this.dx -= dx;	this.dy -= dy;	that.dx += dx;	that.dy += dy;	}	}	}	}	if (!pixels[inheight * width + inwidth]) {	pixels[inheight * width + inwidth] = [this];	}	else {	pixels[inheight * width + inwidth].push(this);	}	this.x	+= this.dx;	this.y	+= this.dy;	this.fx += this.dx;	this.fy += this.dy;	this.dx = 0;	this.dy = 0;	context.beginPath();	context.fillStyle = BALL_COLOR;	context.arc(this.x, this.y, BALL_SIZE / 2, 0, Math.PI * 2, true);	context.closePath();	context.fill();	};	return {	init: function(canvas, w, h) { canvas = document.getElementById(canvas);	context = canvas.getContext('2d');	canvas.height = (h) ? h : window.innerHeight;	canvas.width = (w) ? w : window.innerWidth;	width = canvas.width;	height = canvas.height;	canvas.addEventListener('mousedown', function(e) {	if (e.preventDefault) e.preventDefault();	mouseDown = true;	return false;	}, false);	canvas.addEventListener('mouseup', function(e) {	mouseDown = false;	return false;	}, false);	canvas.addEventListener('mousemove', function(e) { if(e.offsetX) { mouseX = e.offsetX; mouseY = e.offsetY; } else if(e.layerX) { mouseX = e.layerX; mouseY = e.layerY; }	return false;	}, false);	window.onresize = function() {	init(c,w,h);	return false;	}	setTimeout(function() {	for (var i = 0; i < BALL_NUMBER; i++) {	balls[i] = new Ball(20);	}	loop();	}, 100);	}	};
}();
balls.init('c');
Ball Physics - Script Codes
Ball Physics - Script Codes
Home Page Home
Developer Seth Broweleit
Username getsetbro
Uploaded October 14, 2022
Rating 3
Size 3,149 Kb
Views 12,144
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Seth Broweleit (getsetbro) Script Codes
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