soundmap_theme/carnaval/soundmanagerv297a-20130101/demo/animation-1/script/animation.js

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JavaScript
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2016-11-29 01:18:17 +01:00
var balls = [];
var canvasX = 0;
var canvasY = 0;
var timer = null;
var m_lastX = 0;
var m_lastY = 0;
var M_SPACE = 24;
var B_VMIN = 5;
var B_VMAX = 5;
var B_WIDTH = 13;
var B_HEIGHT = 13;
var useMouse = null;
var ballSound = null;
var ballPopSound = null;
function rnd(n) {
return Math.random()*n;
}
function rndI(n) {
return parseInt(rnd(n));
}
function createBall(oParent) {
oParent.appendChild(balls[0].cloneNode(true));
initBall(balls[balls.length-1],balls.length);
}
function createBallAtMouse(e) {
e = e?e:event;
createBall(document.getElementById('ball-container'));
with (balls[balls.length-1]) {
_x = e.clientX;
_y = e.clientY;
if (useMouse.checked != false) {
_vX = (m_lastX-e.clientX)*-0.7;
_vY = (m_lastY-e.clientY)*-0.7;
} else {
_vX = 0;
_vY = 0;
}
}
moveBall(balls[balls.length-1]);
}
function initBall(oBall,i) {
oBall._id = 'ball'+i;
oBall._active = true;
oBall._x = rnd(canvasX);
oBall._y = rnd(canvasY);
oBall._vX = B_VMIN+rnd(B_VMAX)*(Math.random()>0.5?1:-1);
oBall._vY = B_VMIN+rnd(B_VMAX);
oBall.style.display = 'block';
}
function moveBall(oBall) {
oBall._x += oBall._vX;
oBall._y += (oBall._vY++); // gravity!
var bounce = false;
if ((oBall._vX>0 && oBall._x+oBall._vX+B_WIDTH>canvasX) || (oBall._vX<0 && oBall._x+oBall._vX<0)) {
oBall._vX *= -1;
bounce = true;
}
if ((oBall._vY>0 && oBall._y+oBall._vY+B_HEIGHT>canvasY) || (oBall._vY<0 && oBall._y+oBall._vY<0)) {
// bounce on Y axis - with resistance on both axes
if (oBall._vY>0) oBall._y = canvasY-B_HEIGHT; // bounce exactly from bottom
oBall._vY *= -(oBall._vY>1?0.6:1);
bounce = true;
if (Math.abs(oBall._vX)>0.5) {
oBall._vX *= 0.85;
} else {
oBall._vX = 0;
}
if (Math.abs(oBall._vY)<=3 && Math.abs(oBall._vX==0)) {
oBall._active = false;
bounce = false;
ballPopSound.play();
oBall.style.display = 'none';
}
}
oBall.style.left = oBall._x+'px';
oBall.style.top = oBall._y+'px';
if (bounce) ballSound.play({pan:getPan(oBall._x,canvasX)});
}
function getPan(x,canvasX) {
var pos = x/canvasX;
var pan = null;
if (pos<=0.4) {
pan = Math.floor(-100+(pos/0.4*100));
} else if (pos>0.4 && pos<=0.5) {
pan = 0;
} else {
pan = Math.floor(pos*100);
}
return pan;
}
function animateStuff() {
for (var i=balls.length; i--;) {
if (balls[i]._active) moveBall(balls[i]);
}
}
function startAnimation() {
if (!timer) timer = setInterval(animateStuff,20);
document.getElementById('b-start').disabled = true;
document.getElementById('b-stop').disabled = false;
}
function stopAnimation() {
if (!timer) return false;
clearInterval(timer);
timer = null;
document.getElementById('b-start').disabled = false;
document.getElementById('b-stop').disabled = true;
}
function mouseDown(e) {
e = e?e:event;
m_lastX = e.clientX;
m_lastY = e.clientY;
document.onmousemove = mouseMove;
document.onmouseup = mouseUp;
return false;
}
function mouseMove(e) {
e = e?e:event;
if (Math.abs(e.clientX-m_lastX)>M_SPACE || Math.abs(e.clientY-m_lastY)>M_SPACE) {
createBallAtMouse(e);
m_lastX = e.clientX;
m_lastY = e.clientY;
}
return false;
}
function mouseUp() {
document.onmousemove = null;
document.onmouseup = null;
}
function init() {
ballSound = soundManager.createSound({
id: 'ballSound',
url: '../animation/audio/fingerplop.mp3',
volume: 50,
multiShot: true,
autoLoad: true
});
ballPopSound = soundManager.createSound({
id: 'ballPopSound',
url: '../animation/audio/fingerplop2.mp3',
volume: 50,
multiShot: true,
autoLoad: true
});
balls = document.getElementById('ball-container').getElementsByTagName('img');
for (var i=balls.length; i--;) {
initBall(balls[i],i);
}
useMouse = document.getElementById('useMouse');
useMouse.checked = true;
getWindowCoords();
startAnimation();
document.onmousedown = mouseDown;
}
// I know this is kinda broken in Opera.
getWindowCoords = (navigator.userAgent.toLowerCase().indexOf('opera')>0||navigator.appVersion.toLowerCase().indexOf('safari')!=-1)?function() {
canvasX = window.innerWidth;
canvasY = window.innerHeight;
}:function() {
canvasX = document.documentElement.clientWidth||document.body.clientWidth||document.body.scrollWidth;
canvasY = document.documentElement.clientHeight||document.body.clientHeight||document.body.scrollHeight;
}
window.onresize = getWindowCoords;
soundManager.setup({
preferFlash: true,
flashVersion: 9,
url: '../../swf/',
useHighPerformance: true,
debugMode: false, // disable debug mode
onready: function() {
// soundManager is ready to use (create sounds and so on)
init();
}
});