461 lines
11 KiB
JavaScript
461 lines
11 KiB
JavaScript
|
|
var canvas;
|
|
|
|
var delta = [0, 0];
|
|
var stage = [window.screenX, window.screenY, window.innerWidth, window.innerHeight];
|
|
getBrowserDimensions();
|
|
|
|
var themes = [[" #10222B", "#95AB63", "#BDD684", "#E2F0D6", "#F6FFE0"], ["#362C2A", "#732420", "#BF734C"
|
|
, "#FAD9A0", "#736859"], ["#0D1114", "#102C2E", "#695F4C", "#EBBC5E", "#FFFBB8"], ["#2E2F38", "#FFD63E"
|
|
, "#FFB54B", "#E88638", "#8A221C"], ["#121212", "#E6F2DA", "#C9F24B", "#4D7B85", "#23383D"],
|
|
["#343F40", "#736751", "#F2D7B6", "#BFAC95", "#8C3F3F"], ["#000000", "#2D2B2A", "#561812", "#B81111"
|
|
, "#FFFFFF"], ["#333B3A", "#B4BD51", "#543B38", "#61594D", "#B8925A"]]; var theme; var worldAABB, world,
|
|
iterations = 1, timeStep = 1 / 15; var walls = []; var wall_thickness = 200; var wallsSetted = false; var bodies,
|
|
elements, text; var createMode = false; var destroyMode = false; var isMouseDown = false; var mouseJoint; var mouse = {
|
|
x: 0, y: 0
|
|
}; var gravity = { x: 0, y: 1 }; var PI2 = Math.PI * 2; var timeOfLastTouch = 0; init(); play(); function
|
|
init() {
|
|
canvas = document.getElementById('canvas'); document.onmousedown = onDocumentMouseDown;
|
|
document.onmouseup = onDocumentMouseUp; document.onmousemove = onDocumentMouseMove;
|
|
document.ondblclick = onDocumentDoubleClick; document.addEventListener('touchstart', onDocumentTouchStart, false);
|
|
document.addEventListener('touchmove', onDocumentTouchMove, false); document.addEventListener('touchend',
|
|
onDocumentTouchEnd, false); window.addEventListener('deviceorientation', onWindowDeviceOrientation, false);
|
|
//init box2d
|
|
worldAABB = new b2AABB(); worldAABB.minVertex.Set(-200, -200);
|
|
worldAABB.maxVertex.Set(window.innerWidth + 200, window.innerHeight + 200); world = new b2World(worldAABB, new
|
|
b2Vec2(0, 0), true); setWalls(); reset();
|
|
} function play() { setInterval(loop, 1000 / 40); } function reset() {
|
|
var i; if (bodies) {
|
|
for (i = 0; i < bodies.length; i++) {
|
|
var body = bodies[i]
|
|
canvas.removeChild(body.GetUserData().element); world.DestroyBody(body); body = null;
|
|
}
|
|
} // color theme
|
|
theme = themes[Math.random() * themes.length >> 0];
|
|
document.body.style['backgroundColor'] = theme[0];
|
|
|
|
bodies = [];
|
|
elements = [];
|
|
|
|
createInstructions();
|
|
|
|
for (i = 0; i < 10; i++) {
|
|
|
|
createBall();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
//
|
|
|
|
function onDocumentMouseDown() {
|
|
|
|
isMouseDown = true;
|
|
return false;
|
|
}
|
|
|
|
function onDocumentMouseUp() {
|
|
|
|
isMouseDown = false;
|
|
return false;
|
|
}
|
|
|
|
function onDocumentMouseMove(event) {
|
|
|
|
mouse.x = event.clientX;
|
|
mouse.y = event.clientY;
|
|
}
|
|
|
|
function onDocumentDoubleClick() {
|
|
|
|
reset();
|
|
}
|
|
|
|
function onDocumentTouchStart(event) {
|
|
|
|
if (event.touches.length == 1) {
|
|
|
|
event.preventDefault();
|
|
|
|
// Faking double click for touch devices
|
|
|
|
var now = new Date().getTime();
|
|
|
|
if (now - timeOfLastTouch < 250) {
|
|
|
|
reset();
|
|
return;
|
|
}
|
|
|
|
timeOfLastTouch = now;
|
|
|
|
mouse.x = event.touches[0].pageX;
|
|
mouse.y = event.touches[0].pageY;
|
|
isMouseDown = true;
|
|
}
|
|
}
|
|
|
|
function onDocumentTouchMove(event) {
|
|
|
|
if (event.touches.length == 1) {
|
|
|
|
event.preventDefault();
|
|
|
|
mouse.x = event.touches[0].pageX;
|
|
mouse.y = event.touches[0].pageY;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
function onDocumentTouchEnd(event) {
|
|
|
|
if (event.touches.length == 0) {
|
|
|
|
event.preventDefault();
|
|
isMouseDown = false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
function onWindowDeviceOrientation(event) {
|
|
|
|
if (event.beta) {
|
|
|
|
gravity.x = Math.sin(event.gamma * Math.PI / 180);
|
|
gravity.y = Math.sin((Math.PI / 4) + event.beta * Math.PI / 180);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
function createInstructions() {
|
|
|
|
var size = 250;
|
|
|
|
var element = document.createElement('div');
|
|
element.width = size;
|
|
element.height = size;
|
|
element.style.position = 'absolute';
|
|
element.style.left = -200 + 'px';
|
|
element.style.top = -200 + 'px';
|
|
element.style.cursor = "default";
|
|
|
|
canvas.appendChild(element);
|
|
elements.push(element);
|
|
|
|
var circle = document.createElement('canvas');
|
|
circle.width = size;
|
|
circle.height = size;
|
|
|
|
var graphics = circle.getContext('2d');
|
|
|
|
graphics.fillStyle = theme[3];
|
|
graphics.beginPath();
|
|
graphics.arc(size * .5, size * .5, size * .5, 0, PI2, true);
|
|
graphics.closePath();
|
|
graphics.fill();
|
|
|
|
element.appendChild(circle);
|
|
|
|
text = document.createElement('div');
|
|
text.onSelectStart = null;
|
|
var flinks = JSON.parse(localStorage.getItem('logos'))
|
|
text.innerHTML = '<span class="gdtx" style="color:' + theme[0] + '"><img src=' + (flinks[Math.floor(Math.random() * flinks.length)]) + '></img></span>';
|
|
text.style.color = theme[1];
|
|
text.style.position = 'absolute';
|
|
text.style.left = '0px';
|
|
text.style.top = '0px';
|
|
text.style.fontFamily = 'Georgia';
|
|
text.style.textAlign = 'center';
|
|
element.appendChild(text);
|
|
|
|
text.style.left = ((250 - text.clientWidth) / 2) + 'px';
|
|
text.style.top = ((250 - text.clientHeight) / 2) + 'px';
|
|
|
|
var b2body = new b2BodyDef();
|
|
|
|
var circle = new b2CircleDef();
|
|
circle.radius = size / 2;
|
|
circle.density = 1;
|
|
circle.friction = 0.3;
|
|
circle.restitution = 0.3;
|
|
b2body.AddShape(circle);
|
|
b2body.userData = { element: element };
|
|
|
|
b2body.position.Set(Math.random() * stage[2], Math.random() * -200);
|
|
b2body.linearVelocity.Set(Math.random() * 400 - 200, Math.random() * 400 - 200);
|
|
bodies.push(world.CreateBody(b2body));
|
|
}
|
|
|
|
function createBall(x, y) {
|
|
|
|
var x = x || Math.random() * stage[2];
|
|
var y = y || Math.random() * -200;
|
|
|
|
var size = (Math.random() * 100 >> 0) + 20;
|
|
|
|
var element = document.createElement("canvas");
|
|
element.width = size;
|
|
element.height = size;
|
|
element.style.position = 'absolute';
|
|
element.style.left = -200 + 'px';
|
|
element.style.top = -200 + 'px';
|
|
element.style.WebkitTransform = 'translateZ(0)';
|
|
element.style.MozTransform = 'translateZ(0)';
|
|
element.style.OTransform = 'translateZ(0)';
|
|
element.style.msTransform = 'translateZ(0)';
|
|
element.style.transform = 'translateZ(0)';
|
|
|
|
var graphics = element.getContext("2d");
|
|
|
|
var num_circles = Math.random() * 10 >> 0;
|
|
|
|
for (var i = size; i > 0; i -= (size / num_circles)) {
|
|
|
|
graphics.fillStyle = theme[(Math.random() * 4 >> 0) + 1];
|
|
graphics.beginPath();
|
|
graphics.arc(size * .5, size * .5, i * .5, 0, PI2, true);
|
|
graphics.closePath();
|
|
graphics.fill();
|
|
}
|
|
|
|
canvas.appendChild(element);
|
|
|
|
elements.push(element);
|
|
|
|
var b2body = new b2BodyDef();
|
|
|
|
var circle = new b2CircleDef();
|
|
circle.radius = size >> 1;
|
|
circle.density = 1;
|
|
circle.friction = 0.3;
|
|
circle.restitution = 0.3;
|
|
b2body.AddShape(circle);
|
|
b2body.userData = { element: element };
|
|
|
|
b2body.position.Set(x, y);
|
|
b2body.linearVelocity.Set(Math.random() * 400 - 200, Math.random() * 400 - 200);
|
|
bodies.push(world.CreateBody(b2body));
|
|
}
|
|
|
|
//
|
|
|
|
function loop() {
|
|
|
|
if (getBrowserDimensions()) {
|
|
|
|
setWalls();
|
|
|
|
}
|
|
|
|
delta[0] += (0 - delta[0]) * .5;
|
|
delta[1] += (0 - delta[1]) * .5;
|
|
|
|
world.m_gravity.x = gravity.x * 350 + delta[0];
|
|
world.m_gravity.y = gravity.y * 350 + delta[1];
|
|
|
|
mouseDrag();
|
|
world.Step(timeStep, iterations);
|
|
|
|
for (i = 0; i < bodies.length; i++) {
|
|
|
|
var body = bodies[i];
|
|
var element = elements[i];
|
|
|
|
element.style.left = (body.m_position0.x - (element.width >> 1)) + 'px';
|
|
element.style.top = (body.m_position0.y - (element.height >> 1)) + 'px';
|
|
|
|
if (element.tagName == 'DIV') {
|
|
|
|
var style = 'rotate(' + (body.m_rotation0 * 57.2957795) + 'deg) translateZ(0)';
|
|
text.style.WebkitTransform = style;
|
|
text.style.MozTransform = style;
|
|
text.style.OTransform = style;
|
|
text.style.msTransform = style;
|
|
text.style.transform = style;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
// .. BOX2D UTILS
|
|
|
|
function createBox(world, x, y, width, height, fixed) {
|
|
|
|
if (typeof (fixed) == 'undefined') {
|
|
|
|
fixed = true;
|
|
|
|
}
|
|
|
|
var boxSd = new b2BoxDef();
|
|
|
|
if (!fixed) {
|
|
|
|
boxSd.density = 1.0;
|
|
|
|
}
|
|
|
|
boxSd.extents.Set(width, height);
|
|
|
|
var boxBd = new b2BodyDef();
|
|
boxBd.AddShape(boxSd);
|
|
boxBd.position.Set(x, y);
|
|
|
|
return world.CreateBody(boxBd);
|
|
|
|
}
|
|
|
|
function mouseDrag() {
|
|
// mouse press
|
|
if (createMode) {
|
|
|
|
createBall(mouse.x, mouse.y);
|
|
|
|
} else if (isMouseDown && !mouseJoint) {
|
|
|
|
var body = getBodyAtMouse();
|
|
|
|
if (body) {
|
|
|
|
var md = new b2MouseJointDef();
|
|
md.body1 = world.m_groundBody;
|
|
md.body2 = body;
|
|
md.target.Set(mouse.x, mouse.y);
|
|
md.maxForce = 30000 * body.m_mass;
|
|
// md.timeStep = timeStep;
|
|
mouseJoint = world.CreateJoint(md);
|
|
body.WakeUp();
|
|
|
|
} else {
|
|
|
|
createMode = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// mouse release
|
|
if (!isMouseDown) {
|
|
|
|
createMode = false;
|
|
destroyMode = false;
|
|
|
|
if (mouseJoint) {
|
|
|
|
world.DestroyJoint(mouseJoint);
|
|
mouseJoint = null;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// mouse move
|
|
if (mouseJoint) {
|
|
|
|
var p2 = new b2Vec2(mouse.x, mouse.y);
|
|
mouseJoint.SetTarget(p2);
|
|
}
|
|
}
|
|
|
|
function getBodyAtMouse() {
|
|
|
|
// Make a small box.
|
|
var mousePVec = new b2Vec2();
|
|
mousePVec.Set(mouse.x, mouse.y);
|
|
|
|
var aabb = new b2AABB();
|
|
aabb.minVertex.Set(mouse.x - 1, mouse.y - 1);
|
|
aabb.maxVertex.Set(mouse.x + 1, mouse.y + 1);
|
|
|
|
// Query the world for overlapping shapes.
|
|
var k_maxCount = 10;
|
|
var shapes = new Array();
|
|
var count = world.Query(aabb, shapes, k_maxCount);
|
|
var body = null;
|
|
|
|
for (var i = 0; i < count; ++i) {
|
|
|
|
if (shapes[i].m_body.IsStatic() == false) {
|
|
|
|
if (shapes[i].TestPoint(mousePVec)) {
|
|
|
|
body = shapes[i].m_body;
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return body;
|
|
|
|
}
|
|
|
|
function setWalls() {
|
|
|
|
if (wallsSetted) {
|
|
|
|
world.DestroyBody(walls[0]);
|
|
world.DestroyBody(walls[1]);
|
|
world.DestroyBody(walls[2]);
|
|
world.DestroyBody(walls[3]);
|
|
|
|
walls[0] = null;
|
|
walls[1] = null;
|
|
walls[2] = null;
|
|
walls[3] = null;
|
|
}
|
|
|
|
walls[0] = createBox(world, stage[2] / 2, - wall_thickness, stage[2], wall_thickness);
|
|
walls[1] = createBox(world, stage[2] / 2, stage[3] + wall_thickness, stage[2], wall_thickness);
|
|
walls[2] = createBox(world, - wall_thickness, stage[3] / 2, wall_thickness, stage[3]);
|
|
walls[3] = createBox(world, stage[2] + wall_thickness, stage[3] / 2, wall_thickness, stage[3]);
|
|
|
|
wallsSetted = true;
|
|
|
|
}
|
|
|
|
// BROWSER DIMENSIONS
|
|
|
|
function getBrowserDimensions() {
|
|
|
|
var changed = false;
|
|
|
|
if (stage[0] != window.screenX) {
|
|
|
|
delta[0] = (window.screenX - stage[0]) * 50;
|
|
stage[0] = window.screenX;
|
|
changed = true;
|
|
|
|
}
|
|
|
|
if (stage[1] != window.screenY) {
|
|
|
|
delta[1] = (window.screenY - stage[1]) * 50;
|
|
stage[1] = window.screenY;
|
|
changed = true;
|
|
|
|
}
|
|
|
|
if (stage[2] != window.innerWidth) {
|
|
|
|
stage[2] = window.innerWidth;
|
|
changed = true;
|
|
|
|
}
|
|
|
|
if (stage[3] != window.innerHeight) {
|
|
stage[3] = window.innerHeight;
|
|
changed = true;
|
|
|
|
}
|
|
return changed;
|
|
} |