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Created February 4, 2014 17:28
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word.html
<html><head>
<meta charset="utf-8">
<script src="jquery.js"></script>
<script src="js/jquery-ui-1.8.19.custom.min.js"></script>
<link rel="stylesheet" href="css/jquery-ui-1.8.19.custom.css">
<script src="ivank.js"></script>
<style>
#c:active { cursor: pointer; }
audio { display: none; }
</style>
<script>
Array.prototype.append = function(arr) {
if (!arr) return;
for (var i=0; i < arr.length; i++)
this.push( arr[i] );
}
Array.prototype.last = function() {
return this[ this.length-1 ];
}
String.prototype.n = function(times) {
return (new Array(times + 1)).join(this);
}
String.prototype.normalizeLength = function(a) {
if (this.length > a) return this.substr(0, a);
if (this.length < a) return this + " ".n(a-this.length);
return this;
}
function isOk_(f)
{
return (!isNaN(f) && isFinite(f));
}
function isOk()
{
for (var i=0; i < arguments.length; i++)
{
var a = arguments[i];
if (typeof a.x != 'undefined') // vector
{
if (!isOk(a.x, a.y))
return false;
}
else
{
if (!isOk_(a))
return false;
}
}
return true;
}
var applyingFns = [];
function applyGlobalParamsLocally(fn)
{
if (fn)
{
applyingFns.push(fn);
return;
}
for (var i=0; i < applyingFns.length; i++)
{
var fn = applyingFns[i];
fn();
}
}
////////////////////////////////////////////////////////////
/*
addItems('water', 10)
$.each(circles, function(i, e) { if (e.m.name=='dirt') e.setDensity(0) });
*/
var g_nonsphPress = 80000;
var g_nonsphPressNear = 80000;
var g_sphQ2 = 1;
var g_sphQ3 = 3;
var g_sphQmult = 1;
var g_cellsActive = 0;
var DEBUG = true; // makes it much slower
var g_lastUsedObj;
var g_maxVelLimit = 140000;
var g_skipJointCollision = 0;
var g_useRK = 1;
var g_useRkVel = 1;
var g_useRkPos = 1;
var g_meldOnlySameMaterial = 0;
var g_bMelding = 0;
var g_maxLinks = 6;
var g_sprK = 10000;//25260;
var g_sprDamp = 0;
var g_sprMax = 4.4;
var g_sprLenRatio = 1.0;
var g_b1 = 1;
var g_f1 = 1;
var g_f2 = 1;
var g_f3 = 1;
var g_f4 = 1;
var g_radius = 14;
var g_sphRadius = g_radius*2;
var g_sphStiff = 6000;
var g_sphStiffNear = 10000;
var g_sphRestDensity = 0;
var g_spriteScale = 1.0;//g_sphRadius/8;
/* encapsulate grid functionality:
grid:
step
stepBig
grid
gridDyn
gridBig
gridMin, gridMax
drawGrid
init(step, stepBig)
setInfoObj
regridObj
arrNeedUpdate <- objects should call needsGridUpdate(), which will put them here,
so the array only goes over those
findNearby
getInAABB
update(circles, 'checkall')
*/
// could later implement one more grid, which would be coarser
var g_gridStep = max(g_radius, g_sphRadius)*1;//3; // min *1
var g_grid;
var g_gridDyn;
var g_gridMin;
var g_gridMax;
applyGlobalParamsLocally(function()
{
return;
var w = g_materials['water'];
var o = g_materials['oil'];
var h = g_materials['honey'];
w.sphStiff = g_sphStiff;
w.sphStiffNear = g_sphStiffNear;
w.sphRestDensity = g_sphRestDensity;
o.sphRestDensity = g_sphRestDensity;
h.sphRestDensity = g_sphRestDensity;
w.spriteScale = g_spriteScale;
o.spriteScale = g_spriteScale;
h.spriteScale = g_spriteScale;
/*
*/
})
var g_HeatMax = 3;
var g_sequential = 1;
///////////////////////////////////////////////
// SIMULATION
var badSprite = 64;
var g_gravity = 9;
var g_nGravity = v2(0, 1);
var g_useGrid = 1;
var numCircles = 10; // <- NUMBER OF CIRCLES
var g_drawGrid = 0;
var g_drawHeat = 0;
var g_drawContacts = 0;
var g_jointWidth = 0;
var g_timeMult = 0.99;//502; // <-- TIME + STEPS
// debug
var fKeys = 30;//8;
var fShift = 2;
// globals
var stage, dbgs, dbg;
var bgImage, bgClr;
var sprites = [];
var materials = [];
var g_freeCircleId = 1;
var circles = [];
var joints = [];
var grid = [];
var dt = 0.001;
var g_fps = 100;
var dtFrame = 0.001;
var c0; // test circle
var kd = []; // keys down
var kc = []; // keys changed
var kx = []; // keys changed really
var g_currMaxVel2 = 0;
/*
ked je velky damp (30) a steps (200), tak spring zacina byt pruzne pevny pri 4000
a pri 10000 je takmer kovovo pevny
- pri damp/spring 20/10k je to trochu roztrasene cele
- pri damp/spring 30/4k je to dost roztrasene
- pri damp/spring 30/1k sa to zacina prehybat
- pri steps 50 je roztrasene aj 30/10k
sprng/damp maxR
kov 9000/20 r*1.2
sklo ako kov r*1.01
drevo 2000/100 r*1.2
zele 200/100 r*1.5 ale slabo sa to kyve este (neskusal som vahu menit)
voda 10/1 r*1.2
SPH:
*/
var g_materials =
{
'default': // any unset properties will be taken from here
{
density: 1, velocityDamp: 1,
sprite: 'circle', spriteScale: 1,
isSph: false, // sph parameters are irrelevant here, but are default values
// btw, these are params for water
sphStiff: 3000, sphStiffNear: 10000, sphRestDensity: 3,
},
'water':
{
sprite: 'water', spriteScale: 1, density: 1,
isSph: true,
},
'honey':
{
sprite: 'honey', density: 1.5, spriteScale: 1,
isSph: true, sphStiff: 20000, sphStiffNear: 5000,
},
'oil':
{
sprite: 'oil', density: 0.8, spriteScale: 1,
isSph: true, sphStiff: 20000, sphStiffNear: 5000,
},
'air':
{
sprite: 'air', spriteScale: 0.5,
density: 0.002, velocityDamp: 0,
isSph: true, sphStiff: 10000, sphStiffNear: 1000,
},
'player': { sprite: 'player', density: 0.8,
//spriteScale: 2.5, isSph:1,},
spriteScale: 1.0, isSph:0,},
'iron': { sprite: 'iron', density: 8, },
'metal': { sprite: 'metal', density: 5 },
'glass': { sprite: 'glass', density: 4 },
'ice': { sprite: 'ice', },
'snow': { sprite: 'snow', density: 0.1, velocityDamp: 39, spriteScale: 0.5 },
'lava': { sprite: 'lava', density: 10, isSph: true, },
'grass': { sprite: 'grass', density: 0.1, },
'leafs': { sprite: 'leafs', density: 0.1, },
'apple': { sprite: 'apple', },
'orange': { sprite: 'orange', },
'kiwi': { sprite: 'kiwi', },
'strawb': { sprite: 'strawb', },
'banana': { sprite: 'banana', },
'sand': { sprite: 'sand', density: 1.2, },
'dirt': { sprite: 'dirt', density: 2 },
'rocks': { sprite: 'rocks', density: 5},
'plank': { sprite: 'plank', density: 0.5, },
'wood': { sprite: 'wood', density: 0.5, },
'tree': { sprite: 'tree', density: 0.5, },
'skin': { sprite: 'skin', },
'bone': { sprite: 'bone', density: 2 },
'flesh': { sprite: 'flesh', },
'blood': { sprite: 'blood', },
'brains': { sprite: 'brains', },
'piss': { sprite: 'piss', isSph: true, },
'shit': { sprite: 'shit', },
'goo': { sprite: 'goo', },
'jelly': { sprite: 'jelly', },
'flour': { sprite: 'flour', },
};
// iterasi untuk mengeset material yang belum diset...
$.each(g_materials, function(matName, material)
{
var defM = g_materials['default'];
$.each(defM, function(key, defValue)
{
if (typeof material[key] == 'undefined')
material[key] = defValue;
material.name = matName;
});
});
function delCircles()
{
$.each(circles, function(i, c)
{
c.remove();
});
circles = [];
fillGrid();
}
function delJoints()
{
$.each(joints, function(i, j)
{
j.remove();
});
joints = [];
}
function getLoadId(id)
{
for (var i=0; i < circles.length; i++)
{
var c = circles[i];
if (c.load_id == id)
return c;
}
}
// posisi Material ketika mula-mula running
function introlevel()
{
return 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}
/*
menambahkan material. Jika materialnya sudah disimpan tambahkan...
jika belum... load dari introlevel (mula-mula on enter frame )
Untuk material yang keras (kayu, besi, tanah ) sifatnyas static jadi
densitas dibuat nol.... sementara Untuk Material lainnya semisal air, oli,
dan lain-lain.... nilai kecepatannya diload...
*/
function loadLvl(name)
{
delJoints();
delCircles();
name = name || 'lvl';
var lvl = localStorage[name];
if (name=='introlevel')
lvl = introlevel();
if (!lvl) lvl = '[]';
lvl = JSON.parse(lvl);
$.each(lvl, function(i, o)
{
// not in old saves
//if (!o.isCircle) return;
if (o.isJoint) return;
var c = new Circle(o.material, o.p.x, o.p.y);
if (o.static)
c.setDensity(0);
else
c.v = v2copy(o.v);
c.load_id = o.id;
circles.push(c);
});
$.each(lvl, function(i, o)
{
if (!o.isJoint) return;
var a = getLoadId(o.a_id);
var b = getLoadId(o.b_id);
if (hasJoint(a, b))
return console.log('wtf, bad lvl, has duplicate joint');
a.connect(b);
});
nicelog('loaded '+name);
resetCam();
}
function saveLvl(bConfirm, name)
{
nullShiftCtrlAlt();
if (bConfirm)
{
if (!confirm('really save?')) return;
}
name = name || 'lvl';
var lvl=[];
$.each(circles, function(i, c)
{
lvl.push({
material: c.m.name,
p: c.p,
v: c.v,
static: !c.mass,
id: c.id,
});
})
$.each(joints, function(i, j)
{
lvl.push({
isJoint: true,
a_id: j.A.id,
b_id: j.B.id,
});
})
localStorage[name] = JSON.stringify(lvl);
nicelog('saved');
}
function doByArgs(fn, first, orOther)
{
// is material name?
if (typeof first == 'string')
{
var mName = first;
$.each(circles, function(i, c)
{
if (c.m.name == mName)
fn(c);
});
return true;
}
var arr = [];
if (first instanceof Array)
arr = first;
if (!arr.length && orOther instanceof Array)
arr = orOther;
$.each(arr, function(i, c)
{
fn(c);
});
//nicelog('processed ',arr.length,' items - so it shouldnt check "pressed twice"');
if (arr.length) return true;
}
// 1 object: solidify(circle0)
// by material: solidify('dirt')
// array: solidify(getGrasping())
// solidify(circles)
// array or other: solidify(getGrasping(), circles)
var lastPressTimes = {};
function pressedTwiceInSecond(sName)
{
var now = time();
var t = lastPressTimes[sName];
if (!t || (now - t) > 1000)
{
lastPressTimes = {};
lastPressTimes[sName] = now;
return false;
}
lastPressTimes = {};
return true;
}
function currentlyInLastSec()
{
if (!lastPressTimes) return '';
var name = '';
$.each(lastPressTimes, function(k, o)
{
var elapsed = time() - o;
if (elapsed < 1000) name = k;
});
return name;
}
function solidify(c, arr)
{
if (c instanceof Circle)
return c.setDensity(0);
if (!doByArgs(solidify, c, arr) && pressedTwiceInSecond('solidify'))
doByArgs(solidify, circles);
}
function dynamify(c, arr)
{
if (c instanceof Circle)
return c.setDensity(c.m.density);
if (!doByArgs(dynamify, c, arr) && pressedTwiceInSecond('dynamify'))
doByArgs(dynamify, circles);
}
function meld(c, arr)
{
if (c instanceof Circle)
return c.checkNewJoints();
if (!doByArgs(meld, c, arr) && pressedTwiceInSecond('meld'))
doByArgs(meld, circles);
}
function unmeld(c, arr)
{
if (c instanceof Circle)
return c.unmeld();
if (!doByArgs(unmeld, c, arr) && pressedTwiceInSecond('unmeld'))
doByArgs(unmeld, circles);
}
function remove(c, arr)
{
if (c instanceof Circle)
return c.remove();
if (!doByArgs(remove, c, arr) && pressedTwiceInSecond('remove'))
doByArgs(remove, circles);
}
/*
*/
function getSprite(name, size, frames)
{
if (sprites[name])
return sprites[name];
frames = frames || 1;
size = size || badSprite;
var spr = {
name: name,
fname: 'i/'+name+'.png',
size: size,
};
var bd = new BitmapData(spr.fname, frames);
spr.bmpData = bd
spr.newBitmap = function()
{
if (bd.frames > 1) return new MBitmap(bd);
else return new Bitmap(bd);
}
sprites[name] = spr;
return spr;
}
function isFixed(a)
{
return (a.toFixed() == a);
}
function nullShiftCtrlAlt()
{
kd['SHIFT'] = 0;
kd['CTRL'] = 0;
kd['ALT'] = 0;
}
function extractDelta(e)
{
if (e.wheelDelta) return e.wheelDelta;
if (e.detail) return e.detail * -40;
if (e.originalEvent && e.originalEvent.wheelDelta)
return e.originalEvent.wheelDelta;
}
$(document).bind('mousewheel DOMMouseScroll', function (e) {
var d = extractDelta(e);
if (onMouseWheel)
onMouseWheel(d);
});
// ready
$(function()
{
start();
//setTimeout(onRESIZE, 100);
//setTimeout(onRESIZE, 200); // otherwise it somehow doesnt work :/
onRESIZE();
resetCam();
nullShiftCtrlAlt();
$('#sliders').hover(
function() { $(this).css('opacity', 1) },
function() { $(this).css('opacity', 0) }
);
if (0)
{
addSlider('g_f1', 0, 2, 0.01);
addSlider('g_f2', 0, 2, 0.01);
addSlider('g_f3', 0, 2, 0.01);
addSlider('g_f4', 0, 2, 0.01);
addSlider();
}
/*
addSlider('g_maxLinks', 0, 9, 1);
addSlider('g_sphRestDensity', 0.1, 5, 0.1, 'log');
addSlider('g_timeMult', 0.0, 5.0, 0.005);
addSlider('g_sprK', 0, 255000, 20);
addSlider('g_sprDamp', 0, 200);
addSlider('g_drawGrid', 0, 1);
addSlider('g_useGrid', 0, 1);
addSlider('g_skipJointCollision', 0, 1);
*/
addSlider('g_gravity', 0, 9, 1);
addSlider('g_drawHeat', 0, 1);
addSlider('g_HeatMax', 0.1, 1000, 0.1, 'log');
addSlider('g_jointWidth', 0, 4, 1);
addSlider();
addSlider('g_nonsphPress', 100, 999999);
addSlider('g_nonsphPressNear', 100, 999999);
addSlider('g_sphQ2', 0.5, 5, 0.1);
addSlider('g_sphQ3', 0.5, 5, 0.1);
addSlider('g_sphQmult', 0.5, 5, 0.1);
//$('.slider_g_timeMult > a').focus();
function addSlider(evalName, mn, mx, step, logarithmic)
{
var sliders = $('#sliders');
if (!evalName)
return sliders.append('<br>');
if (mn>=1 && mx/mn >= 50000)
logarithmic = 1;
if (logarithmic)
{
mn = loge(mn);
mx = loge(mx);
step = 0.001;
}
step = step || 1;
if (!isFixed(mn) || !isFixed(mx))
step = minmax(mn, 0.001, (mx-mn)/100+0.01);
$('<span></span>').appendTo(sliders);
var slider = $('<div>').appendTo(sliders);
slider.width(200);
slider.addClass('slider_'+evalName);
function fnSlide(ev, ui)
{
var v = ui.value;
if (logarithmic)
{
v = powe(v);
if (v < 5) v = v.toFixed(2);
else v = v.toFixed(0);
}
eval(evalName+' = v');
$(this).prev().text(evalName+': '+v);
}
var val = eval(evalName);
mn = min(mn, val);
mx = max(mx, val);
slider.slider({
min:mn,
max:mx,
step: step,
change: fnSlide,
slide: fnSlide,
});
var currVal = eval(evalName);
if (logarithmic)
currVal = loge(currVal);
slider.slider( {value: currVal} );
}
});
//$(window).resize(onRESIZE);
function onRESIZE()
{
bgScaleOnResize();
updateStageTransform();
}
function bgScaleOnResize()
{
var doItLater = 0;
var w = stage.stageWidth;
var h = stage.stageHeight;
if (bgImage)
{
var bg = bgImage;
var d = bg.bitmapData;
if (d.width)
{
bg.scaleX = stage.stageWidth / d.width;
bg.scaleY = stage.stageHeight / d.height;
var mx = max(bg.scaleX, bg.scaleY);
bg.scaleX = mx;
bg.scaleY = mx;
}
else
doItLater = 1;
}
if (bgClr)
{
var sz = 50000;
// sky
var cSky = 0x99bbee;
var cDirt = 0x64533e;
var cc = 0 ? cDirt : cSky;
bgClr.graphics.beginFill(cc);
bgClr.graphics.drawRect(-sz/2, 0, sz, -sz/2);
// bottom with rock-color
bgClr.graphics.beginFill(0x777777); // rocks
bgClr.graphics.drawRect(-sz/2, 0, sz, sz/4);
if (!'show start rect') {
bgClr.graphics.beginFill(0xff0000, 0.1); // beginning screen
bgClr.graphics.drawRect(0, 0, w, -h);
}
}
if (doItLater)
setTimeout(bgScaleOnResize, 10);
}
function processSound(type, A, B)
{
return;
if (A == c0 || B == c0)
{
if (v2len(c0.v) > 500)
$('.'+type)[rndi(4)].play();
}
}
var pairs = [];
function addPair(a, b)
{
pairs.push( {A:a, B:b} );
}
function Circle(material, x, y)
{
if (typeof material == 'string')
material = g_materials[material];
if (!material) material = g_materials['default'];
x = x || 0;
y = y || 0;
var A = this;
g_lastUsedObj = this;
A.p = v2(x, y);
A.v = v2(0, 0);
A.m = material;
A.sph = A.m.isSph;
A.r = rnd(g_radius) + g_radius;
A.links = [];
A.sprite = getSprite(A.m.sprite);
A.spriteHeat = null; // used if !null, use drawHeat(true/false)
A.o = A.sprite.newBitmap();
stage.addChild(A.o);
A.setDensity = function(fDens) // 0=static
{
var r = A.sph ? 1 : g_radius;
r = g_radius;
A.mass = fDens * (r*r * 3.14159); // untuk besi, kayu, batu... nilai massa = nol... karena density = 0
A.invM = A.mass > 0 ? 1/A.mass : 0;
A.v = v2(0, 0);
}
A.rigidRadius = function()
{
if (A.sph) return g_sphRadius; // SPHM
return g_radius;
}
A.setDensity(A.m.density); // A.mass + A.invM
A.id = g_freeCircleId++;
A.order = A.id; // will be changed frequently, see sortFromDynamics
A.setStatic = function()
{
A.setDensity(0);
}
A.unsetHeat = function()
{
A.drawHeat(false);
}
A.setHeat = function(f)
{
A.drawHeat(true);
if (!isOk(f)) f = 0;
f = abs(f);
f = minmax(f, 0, 1);
A.o.currentFrame = to_i(f*31);
}
A.drawHeat = function(enable)
{
if (enable && A.spriteHeat ||
!enable && !A.spriteHeat)
return;
if (A.o) stage.removeChild(A.o);
if (!enable)
{
A.spriteHeat = null;
A.o = A.sprite.newBitmap();
}
else
{
A.spriteHeat = getSprite('heat');
A.o = A.spriteHeat.newBitmap();
}
A.updateEngineScale();
stage.addChild(A.o);
};
A.updateEngineScale = function()
{
var spr = A.spriteHeat ? A.spriteHeat : A.sprite;
var sprMult = g_radius / spr.size * A.m.spriteScale;
A.offsetRadius = A.o.bitmapData.width * sprMult;
A.o.scaleX = 2 * sprMult;
A.o.scaleY = 2 * sprMult;
}
A.unmeld = function()
{
$.each(joints, function(i, j)
{
if (j.has(A))
j.remove();
});
}
A.remove = function()
{
if (g_lastUsedObj === A)
g_lastUsedObj = null;
if (A.removed) return;
A.unmeld();
stage.removeChild(A.o);
A.removed = true;
}
A.prepareRK = function()
{
A.a = v2(0, 0);
A.a1 = v2(0, 0);
A.a2 = v2(0, 0);
A.a3 = v2(0, 0);
A.a4 = v2(0, 0);
}
A.updateEngineData = function()
{
// toto by stacilo zavolat raz po nacitani textur, len neviem kam to dat
// a inak by to nemalo moc zrat..
A.updateEngineScale();
A.o.x = A.p.x - A.offsetRadius;
A.o.y = A.p.y - A.offsetRadius;
}
A.gravity = function()
{
if (!A.mass) return;
var g = v2mult(g_nGravity, g_gravity*dt*1000);
v2addMe(A.v, g);
}
A.fixBrokenVelocityPosition = function()
{
if (!A.mass) return;
if (!isOk(A.p.x)) A.p.x = 100;
if (!isOk(A.p.y)) A.p.y = 100;
if (!isOk(A.v.x)) A.v.x = 0;
if (!isOk(A.v.y)) A.v.y = 0;
}
A.moveByVelocity = function()
{
if (!A.mass)
{
if (A.v.x || A.v.y) console.error('static object has velocity!');
return;
}
if (A.m.velocityDamp)
{
var dmp = A.m.velocityDamp * dt;
if (dmp > 1) dmp = 0.99;
v2subMe(A.v, v2mult(A.v, dmp));
}
if (A.impulses && (A.impulses.x || A.impulses.y))
{
v2addMe(A.v, v2mult(A.impulses, 1) ); // or *dtFrame ?
A.impulses = v2(0, 0);
}
A.v.x = absmin(A.v.x, g_maxVelLimit);
A.v.y = absmin(A.v.y, g_maxVelLimit);
g_currMaxVel2 = max(v2len2(A.v), g_currMaxVel2);
if (A.movedByRk)
{
A.movedByRk = 0;
return;
}
A.p.x += A.v.x * dt;
A.p.y += A.v.y * dt;
}
A.calcVelocityFromDisplacement = function()
{
if (!A.mass || !dt || !A.sph)
return;
if (!A.pOld)
A.pOld = v2copy(A.p);
if (A.sph)
{
A.v = v2div(v2sub(A.p, A.pOld), dt);
A.pOld = v2copy(A.p);
}
}
A.frameStart = function()
{
A.sphDens = 0;
A.sphDensNear = 0;
A.v_ = v2(0, 0);
/*
if (!A.vOld) A.vOld = v2(0, 0);
A.vOld = v2c(A.v);
if (dt)
A.acc = v2sub(A.vOld, A.v)/dt;
*/
// dbg
A._seqI=0;
A._seqIabs=0;
}
A.findPairs = function()
{
// cant use rigid radius here, cos some pairs are from smooth particles
var dynOnly = !A.mass;
var r = A.sph ? g_sphRadius : g_radius;
var chk = getNearby(A.p, r, A.order, dynOnly);
for (var i=0; i < chk.length; i++)
{
var B = chk[i];
if (A == B) continue;
frame_collision_checks++;
// show what pairs does getNearby return
//drawLine(A.p, B.p, 'f00');
if (!A.mass && !B.mass) continue;
if (g_skipJointCollision)
if (A.isLinked(B)) continue;
var maxDist;
if (!A.sph && !B.sph) maxDist = g_radius*2;
else maxDist = g_sphRadius*2;
if ( v2isCloserThan(A.p, B.p, maxDist) )
addPair(A, B);
else
;//nullContact(A, B);
}
}
A.sphCalculateDensity = function(B, p)
{
//if (!A.sph && !B.sph) return;
var maxRange = g_sphRadius*2;
var d = v2dist(A.p, B.p); // hitung jarak partikel saat ini dengan
// partikel B
p.q = 1 - d / maxRange;
if (p.q < 0) p.q = 0;
p.q *= g_sphQmult;
p.q = min(p.q, 1);
p.q2 = pow(p.q, g_sphQ2);
p.q3 = pow(p.q, g_sphQ3);
A.sphDens += p.q2;
B.sphDens += p.q2;
A.sphDensNear += p.q3;
B.sphDensNear += p.q3;
p.a2b = d;
}
// A.m.sphStiff * (A.sphDens - A.m.sphRestDensity);
A.pressure_ = function() { return A.m.sphStiff * A.sphDens; }
A.pressureNear_ = function() { return A.m.sphStiffNear * A.sphDensNear; }
A.sphCalculatePressure = function()
{
if (A.sph)
{
A.pressure = A.pressure_();
A.pressureNear = A.pressureNear_();
}
else
{
A.pressure = g_nonsphPress;
A.pressureNear = g_nonsphPressNear;
}
if (0 &&A.sph) {
drawCircleO(A.p, A.pressure/100, 'f00');
drawCircleO(A.p, A.pressureNear/100, '00f');
}
g_avgSphDensity += A.sphDens;
g_numSph++;
}
A.sphSolve = function(B, p)
{
//processSound('splash', A, B);
if (g_maxPressure < A.pressure)
g_maxPressure = A.pressure;
if (g_maxPressureNear < A.pressureNear)
g_maxPressureNear = A.pressureNear;
if (!A.pressure) A.pressure = 9999;
if (!B.pressure) B.pressure = 9999;
if (!A.pressureNear) A.pressureNear = 33333;
if (!B.pressureNear) B.pressureNear = 33333;
var press = A.pressure + B.pressure;
var pressN = A.pressureNear + B.pressureNear;
var fDisp = (press*p.q2 + pressN*p.q3);
fDisp *= dt * dt;
if (g_drawContacts)
{
var clr = heatclr(pressN/130000);
if (!A.sph || !B.sph)
drawLine(A.p, B.p, clr);
}
if (!p.a2b) p.a2b = 1;
var a2bN = v2div(v2sub(B.p, A.p), p.a2b);
var vDisp = v2mult(a2bN, -fDisp);
v2divMe( vDisp, (A.invM+B.invM) );
return vDisp;
}
A.rigidSolve = function(B, p)
{
processSound('puk', A, B);
var vF = collideForce(A, B);
if (1)
{
v2addMe(A.v, v2mult(vF, A.invM) );
v2subMe(B.v, v2mult(vF, B.invM) );
return v2(0, 0);
}
return v2mult(vF, dt);
}
A.solveCollision = function(B, p)
{
frame_collisions++;
var vDisp;
if (A.sph || B.sph)
vDisp = A.sphSolve(B, p);
else
vDisp = A.rigidSolve(B, p);
if (!dt) return;
if (A.active) {
if (A.sph) v2addMe( A.p, v2mult(vDisp, A.invM) );
else v2addMe( A.v, v2mult(vDisp, A.invM/dt) );
}
if (B.active) {
if (B.sph) v2subMe( B.p, v2mult(vDisp, B.invM) );
else v2subMe( B.v, v2mult(vDisp, B.invM/dt) );
}
}
A.odrazOdStran = function()
{
if (!A.mass) return;
if (!dt) return;
var r = A.rigidRadius();
var w = stage.stageWidth - r;
var h = stage.stageHeight - r;
var fRestitution = 1;
var fMoveBackRatio = 0.5;
if (A.p.y > -r)
{
var d = -A.p.y - r;
A.p.y += d * fMoveBackRatio;
A.v.y = -abs(A.v.y * fRestitution);
}
}
A.linksMaxed = function()
{
return (g_maxLinks && A.links.length >= g_maxLinks);
}
A.checkNewJoints = function(bOnlyCheckLaterOrder)
{
var order = -1;
if (bOnlyCheckLaterOrder) order = A.order;
//if (!A.mass) return;
if (A.m.name == 'water') return;
if (A.linksMaxed()) return;
var chk = getNearby(A.p, g_radius*1.5, order);
for (var i=0; i < chk.length; i++)
{
var B = chk[i];
if (A == B) continue;
frame_spring_checks++;
if (!A.mass && !B.mass) continue;
//if (!B.mass) continue;
if (A.isLinked(B)) continue;
if (B.linksMaxed()) continue;
if (g_meldOnlySameMaterial)
if (B.m != A.m) continue;
var lenMeld = A.sprMeld(B);
if ( !v2isFurtherThan(A.p, B.p, lenMeld) )
A.connect(B);
}
}
// 'b' is other object
A.sprLen = function(B) {
return (A.rigidRadius() + B.rigidRadius())*g_sprLenRatio;
}
A.sprMax = function(B) {
return A.sprLen(B)*9999;//g_sprMax;
}
A.sprMeld = function(B) {
return A.sprLen(B)*min(g_sprMax, 1.5);
}
A.isLinked = function(B)
{
for (var i=0; i < A.links.length; i++)
{
if (A.links[i] == B)
return true;
}
}
A.connect = function(B)
{
console.assert( !A.isLinked(B) );
A.links.push(B);
B.links.push(A);
joints.push( new Joint(A, B) );
}
// this is called by joints
A.remove_connection_to = function(B)
{
for (var i=0; i < A.links.length; i++)
{
if (A.links[i] == B)
return removeAt(A.links, i);
}
}
A.unmeld = function()
{
$.each(joints, function(i, j)
{
if (j.has(A))
j.remove();
});
}
A.impulse = function(vI)
{
if (!A.mass) return;
if (!A.impulses) A.impulses = v2(0, 0);
v2addMe(A.impulses, v2mult(vI, dtFrame*1000) );
}
}
function hasJoint(a, b)
{
var has = 0;
$.each(joints, function(i, j) {
if (!j.has(a, b)) return;
has = true;
return false;
});
return has;
}
function Joint(A, B)
{
if (DEBUG)
{
if (A === B)
console.log('a == b - wtf joint');
if (hasJoint(A, B))
console.log('has(a, b) already exists - wtf joint');
}
var j = this;
j.A = A;
j.B = B;
j.dbg_drawJoints = function()
{
var sprLen = A.rigidRadius() + B.rigidRadius();
var dist = v2dist(A.p, B.p);
var f = (dist - sprLen) / (sprLen*g_sprMax - sprLen);
f = minmax(f, -1, 1);
f = abs(f);
f = 1-f;
f = f*f*f*f;
f = 1-f;
f = parseInt(f*255);
var green = 255-f;
var red = f;
var clr = red*256*256 + green*256;
var ax = A.p.x, ay=A.p.y;
var bx = B.p.x, by=B.p.y;
drawLine(ax, ay, bx, by, clr, g_jointWidth);
}
// i = 1,2,3,4
j.updateRK = function(i)
{
if (!A.mass && !B.mass) return;
if (!dt) return;
var t = dt;
switch (i) {
case 1: t *= 0;
break;
case 2:
case 3: t *= 0.5;
break;
case 4: t *= 1;
break;
}
var q = i-1; // previous index
var vq = 'v'+q;
var aq = 'a'+q;
var pi = 'p'+i;
var vi = 'v'+i;
var ai = 'a'+i;
A[pi] = v2c(A.p);
B[pi] = v2c(B.p);
A[vi] = v2c(A.v);
B[vi] = v2c(B.v);
if (q)
{
v2addMe(A[pi], v2mult(A[vq], t));
v2addMe(B[pi], v2mult(B[vq], t));
v2addMe(A[vi], v2mult(A[aq], t));
v2addMe(B[vi], v2mult(B[aq], t));
}
var a = dampspringForce_pv(A[pi], A[vi], B[pi], B[vi], A.sprLen(B), g_sprK, g_sprDamp);
v2divMe(a, A.invM+B.invM)
v2addMe(A[ai], v2mult(a, A.invM));
v2subMe(B[ai], v2mult(a, B.invM));
//j.dbgRK(i, a);
}
j.dbgRK = function(i, a)
{
var w = 1;
var fa = 0.0005;
var fv = 0.05;
var off = (i+1)*20;
if (!i) i = '';
var aa = v2mult(A['a'+i], fa);
var ba = v2mult(B['a'+i], fa);
var av = v2mult(A['v'+i], fv);
var bv = v2mult(B['v'+i], fv);
var ap = v2c(A['p'+i]);
var bp = v2c(B['p'+i]);
var pp = v2center(ap, bp);
v2addMexy(ap, off, 0);
v2addMexy(bp, off+10, 0);
//if (a) drawLineN(pp, v2perp(a, fa*-0.001), 'f00', 1);
//drawLineN(ap, aa, 'f00', w);
//drawLineN(bp, ba, '0f0', w);
v2addMex(ap, 5);
v2addMex(bp, 5);
//drawLineN(ap, av, 'f0f', w);
//drawLineN(bp, bv, '00f', w);
}
j.updateRK4 = function()
{
if (!A.mass && !B.mass) return;
if (!dt) return;
finishRK4(A);
finishRK4(B);
//j.dbgRK(0);
}
function finishRK4(c, q)
{
if (!c.active) return;
var pq = v2avg(c.p1, c.p2, c.p2, c.p3, c.p3, c.p4);
if (g_useRkPos)
{
c.p = v2c(pq);
c.movedByRk = 1;
}
var vq = v2avg(c.v1, c.v2, c.v2, c.v3, c.v3, c.v4);
if (g_useRkVel)
c.v = v2c(vq);
var aq = v2avg(c.a1, c.a2, c.a2, c.a3, c.a3, c.a4);
v2multMe(aq, dt);
v2addMe(c.a, aq);
}
j.update = function()
{
if (g_useRK) j.updateRK4();
else j.updateEuler();
}
j.updateEuler = function()
{
if (!A.mass && !B.mass) return;
if (!dt) return;
var vF = dampspringForce(A, B, A.sprLen(B), g_sprK, g_sprDamp);
v2multMe( vF, dt/(A.invM+B.invM) );
v2addMe( A.a, v2mult(vF, A.invM) );
v2subMe( B.a, v2mult(vF, B.invM) );
}
function dampspringForce_pv(Ap, Av, Bp, Bv, sprLen, sprK, sprDamp)
{
var a2b = v2dist(Bp, Ap);
var a2bN = v2dirTo(Ap, Bp);
var sI = (a2b - sprLen) * sprK;
var dI = v2dot( v2sub(Bv, Av), a2bN ) * sprDamp;
return v2mult(a2bN, sI+dI);
}
j.isBroken = function()
{
var sprLen = A.rigidRadius() + B.rigidRadius();
return v2isFurtherThan(A.p, B.p, A.sprMax(B));
}
j.remove = function()
{
A.remove_connection_to(B);
B.remove_connection_to(A);
j.removed = true;
return true;
}
j.has = function(c, q)
{
if (!q)
return (j.A==c || j.B==c);
return (j.A==c && j.B==q || j.A==q && j.B==c);
}
function dampspringForceRK4(sprK, sprLen, sprDamp, A, B)
{
/*
P, V, dt, A?
V1 = V + 0*dt*A
A1 = A // [0, P, V1] = current acceleration (when P and V)
V2 = V + 0.5*dt*A1
A2 = [0.5*dt, P+0.5*dt*V1, V2]
V3 = V + 0.5*dt*A2
A3 = [0.5*dt, P+0.5*dt*V2, V3]
V4 = V + 0.5*dt*A3
A4 = [dt, P+dt*V3, V4]
V_ = (V1 + 2*V2 + 2*V3 + V4)/6
A_ = (A1 + 2*A2 + 2*A3 + A4)/6
*/
// create virtual objects
var A = {v: v2c(a.v), p: v2c(a.p), invM: a.invM};
var B = {v: v2c(b.v), p: v2c(b.p), invM: b.invM};
var sprLen = a.sprLen(b);
A.f1 = a.f1;
A.vOrig = v2c(A.v);
B.vOrig = v2c(B.v);
fRK4(A, B, 0.00001*dt, 1, sprLen); // will use A.f1
fRK4(A, B, 0.5*dt, 2, sprLen);
fRK4(A, B, 0.5*dt, 3, sprLen);
fRK4(A, B, 1.0*dt, 4, sprLen);
var fx = A.f1.x + 2*(A.f2.x + A.f3.x) + A.f4.x;
var fy = A.f1.y + 2*(A.f2.y + A.f3.y) + A.f4.y;
var vF = v2(fx, fy);
return vF;
}
function dampspringForceRK4_pv(sprK, sprLen, sprDamp, A, B)
{
/*
// mam P a V
P1 = P
V1 = V
// posuniem sa o polku dt, a zistim aka by bola teraz potrebna rychlost
P2 = P + 0.5*dt*V1
V2 = newV(0.5*dt)
// posuniem sa o polku dt s vypocitanou rychlostou, a presnejsie(?) zistim aku treba rychlost
P3 = P + 0.5*dt*V2
V3 = newV(0.5*dt)
// skusim sa opat posunut, aby som zistil rychlost, tentoraz tam kde chcem ist
P4 = P + 1.0*dt*V3
V4 = newV(1.0*dt)
// vysledna rychlost je z kombinacie hodnot (asi)
P_ = (P1 + 2*P2 + 2*P3 + P4)/6
V_ = (V1 + 2*V2 + 2*V3 + V4)/6
*/
// create virtual objects
var A = {v: v2c(a.v), p: v2c(a.p), invM: a.invM};
var B = {v: v2c(b.v), p: v2c(b.p), invM: b.invM};
var sprLen = a.sprLen(b);
A.f1 = a.f1;
A.vOrig = v2c(A.v);
B.vOrig = v2c(B.v);
fRK4(A, B, 0.00001*dt, 1, sprLen); // will use A.f1
fRK4(A, B, 0.5*dt, 2, sprLen);
fRK4(A, B, 0.5*dt, 3, sprLen);
fRK4(A, B, 1.0*dt, 4, sprLen);
var fx = A.f1.x + 2*(A.f2.x + A.f3.x) + A.f4.x;
var fy = A.f1.y + 2*(A.f2.y + A.f3.y) + A.f4.y;
var vF = v2(fx, fy);
return vF;
}
function fRK4(A, B, timestep, k, sprLen)
{
var vF;
if (timestep)
vF = dampspringForce(g_sprK, sprLen, g_sprDamp, A, B);
else
vF = v2c(A.f1);
A['f'+k] = v2c(vF);
v2multMe( vF, timestep/(A.invM+B.invM) );
var a1 = A['f'+(k-1)];
if (k>=2) {
A.v = v2add(A.vOrig, v2mult(a1, timestep));
B.v = v2add(B.vOrig, v2mult(a1, timestep));
}
v2addMe( A.v, v2mult(vF, A.invM) );
v2subMe( B.v, v2mult(vF, B.invM) );
}
function dampspringForce(A, B, sprLen, sprK, sprDamp)
{
var a2b = v2dist(B.p, A.p);
if (a2b == 0) { a2b = 1; A.p.y+=1; }
var a2bN = v2mult( v2sub(B.p, A.p), 1/a2b );
var d = a2b - sprLen;
var sI = sprK * d;
var difVel = v2sub(B.v, A.v);
var dI = v2dot( difVel, a2bN );
dI *= sprDamp;
var f = dI + sI;
return v2mult( v2dirTo(A.p, B.p), f );
}
}
var contacts = {};
function getContact(a, b)
{
var id = a.id+'-'+b.id;
if (!contacts[id])
contacts[id] = {impulse:0};
return contacts[id];
}
function nullContact(a, b)
{
var id = a.id+'-'+b.id;
if (contacts[id])
contacts[id].impulse = 0;
}
// cf2
function collideForce(A, B)
{
var lenCol = g_radius*2;
var Av = v2add(A.v, A.v_);
var Bv = v2add(B.v, B.v_);
var a2b = v2dist(B.p, A.p);
if (!g_sequential)
if (a2b > lenCol) return v2(0, 0);
if (a2b == 0) { a2b = 1; A.p.y+=1; }
var a2bN = v2mult( v2sub(B.p, A.p), 1/a2b );
var difVel = v2sub(Bv, Av);
var dot = v2dot( difVel, a2bN );
if (g_drawContacts)
{
var c = v2center(A.p, B.p);
drawLine(A.p, B.p, 'fff');
}
if (g_sequential)
{
var con = getContact(A, B);
var relNv = dot;
var remove = 0;
if (dt)
remove = relNv + (a2b-lenCol)/dt;
var imp = remove / (A.invM + B.invM);
//imp *= g_f1;
// 0.5 je stabilnejsie, maksie, a viac sa prepada
// 1.3 drzi dost pokope, ale pri 1.4 uz sa rozbija
var newImp = min(0, imp + con.impulse);
//newImp *= g_f2;
// 1.01 vybuchuje
// 0.99 sa scvrkuje
var change = (newImp - con.impulse);
//change *= g_f3;
// to iste co f1
con.impulse = newImp;
return v2mult(a2bN, change);
}
else
{
var toTouch = 0;
if (dt)
toTouch = (a2b-lenCol)/dt;
var pwr = dot + toTouch;
if (pwr > 0)
return v2(0, 0);
pwr /= (A.invM + B.invM);
return v2mult(a2bN, pwr);
}
}
var framecount = 0;
function start()
{
stage = new Stage('c');
stage.mouseChildren = stage.eventChildren = false;
getSprite('player', 128, 4);
getSprite('heat', 64, 32);
var h = stage.stageHeight;
if ('bg')
{
bgClr = new Sprite();
stage.addChild(bgClr);
var f;
switch(3)
{
case 0: f = 'i/bg_black.png'; break;
case 1: f = 'i/bg_white.png'; break;
case 2: f = 'i/bg.jpg'; break;
case 3: f = 'i/bg2.jpg'; break;
}
//bgImage = new Bitmap(new BitmapData(f, 1));
if (bgImage) stage.addChild(bgImage);
bgScaleOnResize();
}
addCircles();
// dbg stuff
dbgs = new Sprite();
dbg = dbgs.graphics;
stage.addChild(dbgs);
stage.addEventListener(Event.ENTER_FRAME, onEF);
stage.addEventListener(Event.RESIZE, onRESIZE);
stage.addEventListener(KeyboardEvent.KEY_DOWN, onKD);
stage.addEventListener(KeyboardEvent.KEY_UP , onKU);
stage.addEventListener(MouseEvent.MOUSE_MOVE, onMM);
stage.addEventListener(MouseEvent.MOUSE_DOWN, onMD);
stage.addEventListener(MouseEvent.MOUSE_UP, onMU);
addInfoTexts();
loadLvl('introlevel'); // ini yang menentukan material di awal running
}
function addInfoTexts()
{
var startX = 100;
var startY = -400;
var text = function(s, setX, setY)
{
if (setX) startX = setX;
if (setY) startY = setY;
drawText(startX, startY, s, 0, 0, stage);
startY += 30;
};
text('Fluid + rigid bodies dynamics', 0, -370);
text('');
text(' [D]irt, [W]ater');
text(' [SPACE+MOUSE] move camera');
text('');
text('(1 of 4) >>');
text('How about other elements?', 1000, -370);
text('');
text(' add [R]ocks, [S]and');
text(' add [Q]Snow, [A]ir');
text('');
text('(2 of 4) >>');
text('When hovering balls, you can:', 2000, -370);
text('');
text(' [N] make them solid (+SHIFT revert)');
text(' [X] delete them');
text('');
text('(3 of 4) >>');
text('Delete world? Make world solid?', 3000, -370);
text('');
text(' press 2x [N] to make everything solid');
text(' press 2x [X] to delete everything');
text('');
text('(4 of 4)');
text('More?', 4000, -370);
text('');
text(' [NUM 0] to pause time');
text(' [NUM 5] to unpause');
text(' [SHIFT+1] to save world (up to 9 worlds)');
text(' [1] to load world');
text('');
text('made by psycho');
text('using IvanK Lib (lib.ivank.net)');
}
function rangeUnit(f, mn, mx)
{
return (f-mn) / (mx-mn);
}
function forRangeStepsLog(mn, mx, steps, fn)
{
forRangeSteps(mn, mx, steps, fn, 'log');
}
function forRangeSteps(mn, mx, steps, fn, log)
{
if (log) {
mn = loge(mn);
mx = loge(mx);
}
var step = 0;
if (steps > 1)
step = (mx-mn) / (steps-1);
for (var i=mn; i <= mx; i+=step)
{
var val = i;
if (log)
val = powe(val);
var ru = rangeUnit(i, mn, mx).toFixed(4);
var b = fn(val, ru);
if (b == false || !step)
break;
}
}
var mousePos = v2null();
var mouseLast = v2null();
var mouseScr = v2null();
var mouseScrLast = v2null();
var graspingRange = 50;
function getGrasping()
{
if (!grasped)return
if (grasped instanceof Array) return grasped;
return [grasped];
}
var arrHovered = [];
var grasped = [];
function processMouse()
{
if (kd['mouse'])
processGrasping();
else
grasped = [];
arrHovered = [];
var g = getCircleAtMouse();
if (g)
{
arrHovered = [g];
}
else
if (!grasped || !grasped.length)
{
var maxR = graspingRange / g_camZoom;
arrHovered = getAllColliding(mousePos, maxR);
if (arrHovered.length)
drawCircleO(mousePos, maxR, 'aaa');
}
$.each(arrHovered, function(i, c)
{
var r = g_radius;
r *= c.mass ? 1.3 : 0.3;
drawCrossBW(c.p, r, 'a0a');
});
}
function processGrasping()
{
var m = mousePos;
var maxN = 3000;
var range = graspingRange / g_camZoom;
var spr = 100;
var dmp = 20;
var isArr = grasped instanceof Array;
if (isArr)
{
$.each(circles, function(i, c)
{
if (grasped.length > maxN)
return false;
if (!c.mass) return;
if (v2isCloserThan(c.p, m, range))
{
if (grasped.indexOf(c) == -1)
{
grasped.push(c)
g_lastUsedObj = c;
}
}
});
$.each(grasped, function(i, g)
{
grasp(g);
drawLine(m, g.p, 'aaa');
});
}
if (grasped && !isArr)
{
grasp(grasped);
drawLine(m, grasped.p, 'aaa');
}
function grasp(c)
{
var mass = c.mass+0;
if (c.sph) mass = 0; // just for now..
grasp_(c.p, c.v, mass, spr, dmp);
}
function grasp_(p, v, mass, spr, dmp)
{
var m = mousePos;
var d = v2sub(m, p);
if (!mass || !dtFrame)
{
v.x=0;
v.y=0;
return v2addMe( p, v2mult(d, 0.05) );
}
if (v2len(d) < 50)
return;
var sp = spr * dtFrame * (mass?logn(mass, 4):1);
var dm = dmp * dtFrame;
dm = minmax(dm, 0, 0.99);
v2multMe(d, sp); // spring
v2addMe( v, d );
v2subMe( v, v2mult(v, dm) ); // damp
}
}
function onMouseWheel(d)
{
var fZoom = 1.15;
if (d > 0)
camZoomIn(fZoom);
else
camZoomOut(fZoom);
}
function onMM(e)
{
var of = $('#c').offset();
var c = $('#c');
var w = $(window);
of = v2( of.left, of.top );
c = v2( c.width(), c.height() );
w = v2( w.width(), w.height() );
var m = v2( e.target.mouseX, e.target.mouseY );
// mousePos = (m-of) * (w/c);
mouseScrLast = mouseScr;
mouseScr = v2multV(
v2sub(m, of),
v2divV(w, c)
);
mouseLast = mousePos;
mousePos = screenToWorld(mouseScr);
if (kd['SPACE'])
{
var diff = v2sub(mouseScr, mouseScrLast);
lockCam = false;
var z = g_camZoom;
addCamPosition(-diff.x/z, -diff.y/z);
}
}
/*
jika posisi material yang ditambahkan tidak
berdempetan dengan material yang sudah ada
*/
function getFirstColliding(v, r)
{
r = r || 0;
var maxR = g_radius + r;
for (var i=0; i < circles.length; i++)
{
var c = circles[i];
if (v2isCloserThan(c.p, v, maxR))
return c;
}
}
function getAllColliding(v, r)
{
r = r || 0;
var arr = [];
var near = getNearby(v, r);
for (var i=0; i < near.length; i++)
{
var c = near[i];
if (v2isCloserThan(c.p, v, g_radius + r))
arr.push(c);
}
return arr;
}
function getCircleAtMouse()
{
var arr = getAllColliding(mousePos);
if (arr && arr.length) return arr[0];
}
function onMD(e)
{
if (!kd['mouse']) kx['mouse'] = true;
kd['mouse'] = true;
kc['mouse'] = true;
// grasping
grasped = [];
var bAllowGraspingOne = 1;
var g = 0;
if (bAllowGraspingOne)
g = getCircleAtMouse();
if (g)
{
grasped = g;
g_lastUsedObj = g;
}
if (grasped)
$('#sliders').hide();
}
function onMU(e)
{
if (kd['mouse']) kx['mouse'] = true;
kd['mouse'] = false;
kc['mouse'] = true;
$('#sliders').show();
}
function getAlternativeCode(c)
{
var ch = String.fromCharCode(c);
if (ch >= 'A' && ch <= 'Z' ||
ch >= '0' && ch <= '9')
return ch;
if (c==106) return 'NUM*';
if (c==107) return 'NUM+';
if (c==109) return 'NUM-';
if (c==96) return 'NUM0';
if (c==97) return 'NUM1';
if (c==98) return 'NUM2';
if (c==99) return 'NUM3';
if (c==100) return 'NUM4';
if (c==101) return 'NUM5';
if (c==102) return 'NUM6';
if (c==103) return 'NUM7';
if (c==104) return 'NUM8';
if (c==105) return 'NUM9';
// must be CAPS cos native 'shift' value
if (c==16) return 'SHIFT';
if (c==17) return 'CTRL';
if (c==18) return 'ALT';
if (c==13) return 'ENTER';
if (c==27) return 'ESC';
if (c==32) return 'SPACE';
if (c==37) return 'LT';
if (c==38) return 'UP';
if (c==39) return 'RT';
if (c==40) return 'DN';
}
var g_keylog = 0;//true;
function logKey(c, bDown)
{
if (!g_keylog) return;
var ch = getAlternativeCode(c);
var s = bDown ? 'DOWN:' : 'UP: ';
s += (' '+c).normalizeLength(4);
if (ch) s += (' '+ch);
s = s.normalizeLength(15);
if (kd['CTRL']) s += ' +CTRL '
if (kd['SHIFT']) s += ' +SHIFT'
if (kd['ALT']) s += ' +ALT '
console.log(s);
}
function onKD(e)
{
var c = e.keyCode;
if (!kd[c]) kx[c] = true;
kd[c] = true;
kc[c] = true;
var ch = getAlternativeCode(c);
if (ch)
{
kd[ch] = true;
kc[ch] = true;
}
logKey(c, 'down');
}
function onKU(e)
{
var c = e.keyCode;
if (kd[c]) kx[c] = true;
kd[c] = false;
kc[c] = true;
var ch = getAlternativeCode(c);
if (ch)
{
kd[ch] = false;
kc[ch] = true;
}
logKey(c);
}
function addCircles()
{
var w = stage.stageWidth;
var h = stage.stageHeight;
//addItems('water', 2);
//addItems('dirt', 2);
if (numCircles)
{
var mats = [];
switch (4)
{
case 0: mats = ['skin', 'bone', 'flesh']; break;
case 1: mats = ['dirt', 'sand', 'rocks']; break;
case 2: mats = ['dirt', 'dirt', 'rocks']; break;
case 3: mats = ['water', 'water', 'dirt', 'rocks']; break;
case 4: mats = ['dirt']; break;
case 5: mats = ['water']; break;
case 6: mats = ['apple', 'orange', 'kiwi', 'strawb', 'banana']; break;
case 7: mats = ['oil', 'water', 'honey']; break;
}
var countPerM = to_i(numCircles / mats.length);
if (!countPerM) countPerM = 1;
for (var i=0; i < mats.length; i++)
{
var m = mats[i];
addItems(m, countPerM);
numCircles -= countPerM;
if (numCircles<=0) break;
}
}
if (0)
{
//c0 = addItems('player', 1, 0, w/2, 0)[0];
addItems('player', 1, 0, w/2, 0)[0];
}
// bottom
if (0)
{
var r = g_radius;
var x = -r*2;
var y = h-r*4;
var statics = addItems('iron', w/r*0.8, -0.5, x, y);
$.each(statics, function(i, e) {
e.setStatic();
});
}
g_lastAddedY = -1;
}
var g_lastAddedY=0;
/*
tambahkan sebanyak count material....
jika count tidak ada.... maka tambahkan satu biji material
*/
function addItems(materialName, count, spacingRatioOfR, startX, startY)
{
// (RR)rr(RR)...
spacingRatioOfR = spacingRatioOfR || 1;
if (typeof count == 'undefined') count = 1;
var m = g_materials[materialName];
if (!m) {
console.error('no material defined');
return;
}
var r = m.isSph ?
min(g_sphRadius/2, 8) :
g_radius;
var w = stage.stageWidth;
var h = stage.stageHeight;
var space = r*2 + r*spacingRatioOfR;
var step = to_i( space )+1;
var side = to_i( w/step - 0.5 ); // -2 for spacing on sides
var customPosition = (startX || startY);
if (!customPosition)
{
startY = g_lastAddedY + space/2;
startX = space;
}
else
side = 9999;
var add = [];
for (var i=0; i < count; i++)
{
var xi = to_i(i%side);
var yi = to_i(i/side);
var x = xi*step + startX + rndi(); // rand to avoid aligning
var y = yi*step + startY + rndi();
if (!customPosition && y > h-space*4)
break;
add.push( new Circle(m, x, y) )
if (!customPosition && g_lastAddedY!=-1)
g_lastAddedY = y + space/2;
}
circles.append(add);
return add;
}
// z nejakeho divneho dovodu nieco zadefinuje 'add' a potom to oddefinuje, ale ked to tu takto nastavim,
// tak tu zostane asi volanie starej funkcie, a tym padom sa to vola, kedze 'add_' nikto neoddefinuje.. asi tak..
/*
*/
function add_(materialName, count)
{
lockCam = 0;
var mat = materialName;
var m = mousePos;
if (kd['SHIFT'])
{
var r = (graspingRange-g_radius)/g_camZoom;
var i = 0;
while (i++ < 100)
{
var vRnd = v2rnd(0, r);
if (v2len2(vRnd) > r*r) continue;
var p = v2add(m, vRnd); // tambahkan material tidak jauh dari posisi mouse saat ini
// yakni dengan melakukan koreksi tertentu dari posisi mouse
addIfSpace(mat, 1, 0, p.x, p.y);
}
return;
}
if (!count || count == 1) // ini masuk karena tidak ada argument untuk count
{
grasped = addIfSpace(mat, count, 0, m.x, m.y);
return grasped;
}
else
return add(mat, count);
}
// relatively (con?)temporary
function add(materialName, count, space, x, y)
{
return addItems(materialName, count, space, x, y)
}
/*
tambahkan material jika tidak berdempetan dengan material yang sudah
ada
*/
function addIfSpace(materialName, count, space, x, y)
{
if (getFirstColliding(v2(x, y), g_radius-1)) return;
return addItems(materialName, count, space, x, y)
}
function kkd(c) { return kd[c]; }
function kkc(c) { return kc[c]; }
function kkx(c) { return kx[c]; }
function pressed(c)
{
return kd[c] && kc[c];
}
function pressedAny()
{
for (var i=0; i < arguments.length; i++)
{
var c = arguments[i];
if (kd[c] && kc[c])
return c;
}
}
function doWithGrasped(fn)
{
var arr = getGrasping();
if (!arr) return;
$.each(grasped, function(i, g)
{
fn(g);
});
}
var g_camX = 0;
var g_camY = 0;
var g_camZoom = 1;
function addCamPosition(x, y)
{
g_camX += x;
g_camY += y;
updateStageTransform();
}
function setCamPosition(x, y)
{
g_camX = x;
g_camY = y;
updateStageTransform();
}
function camZoomIn(f) { setCamZoom(g_camZoom*f); }
function camZoomOut(f) { setCamZoom(g_camZoom/f); }
function setCamZoom(z)
{
if (g_camY == currentMaxY())
g_camY = 9999; // snap to bottom
g_camZoom = z;
updateStageTransform();
}
function resetCam()
{
var w2 = stage.stageWidth/2;
var h2 = -stage.stageHeight/2;
g_camX = w2;
g_camY = h2;
g_camZoom = 1;
updateStageTransform();
}
function screenToWorld(x, y)
{
if (x.x) {
y = x.y;
x = x.x;
}
var w2 = stage.stageWidth/2;
var h2 = stage.stageHeight/2;
var z = g_camZoom;
x = (x-w2)/z + g_camX;
y = (y-h2)/z + g_camY;
return v2(x, y);
}
function worldToScreen(x, y)
{
if (x.x) {
y = x.y;
x = x.x;
}
var w = stage.stageWidth;
var h = stage.stageHeight;
x = (x - g_camX)*z + w2;
y = (y - g_camY)*z + h2;
return v2(x, y);
}
function currentMaxY() { return -(stage.stageHeight/2-10)/g_camZoom; }
function updateStageTransform()
{
var w = stage.stageWidth;
var h = stage.stageHeight;
var z = g_camZoom;
stage.scaleX = z;
stage.scaleY = z;
g_camY = min(g_camY, currentMaxY());
var x, y;
x = w/2 - g_camX * z;
y = h/2 - g_camY * z;
stage.x = x;
stage.y = y;
}
var lockCam = 0;
function processInput()
{
var w = stage.stageWidth;
var h = stage.stageHeight;
var fZoom = 1.05;
if (kd['NUM*']) resetCam();
if (kd['NUM+']) camZoomIn(fZoom);
if (kd['NUM-']) camZoomOut(fZoom);
if (pressed('C')) lockCam = !lockCam;
if (lockCam && g_lastUsedObj)
{
var p = g_lastUsedObj.p;
setCamPosition(p.x, p.y);
}
if (pressed('P')) add_('player');
if (kkd('W')) add_('water');
if (kkd('O')) add_('oil');
if (kkd('H')) add_('honey');
if (kkd('Q')) add_('snow');
if (kkd('A')) add_('air');
if (kkd('T')) add_('tree');
if (kkd('G')) add_('grass');
if (kkd('L')) add_('leafs');
if (kkd('V')) add_('lava');
if (kkd('D')) add_('dirt');
if (kkd('R')) add_('rocks');
if (kkd('S')) add_('sand');
if (kkd('I')) add_('iron');
var num = pressedAny('1', '2', '3', '4', '5', '6', '7', '8', '9'); // null may not work coz '0'==false
if (num)
{
var lvl = 'lvl'+num;
if (kd['SHIFT']) saveLvl('confirm', lvl);
else loadLvl(lvl);
}
if (pressed('N'))
{
if (kd['SHIFT']) dynamify(getGrasping(), arrHovered);
else solidify(getGrasping(), arrHovered);
}
if (pressed('M'))
{
if (kd['SHIFT']) unmeld(getGrasping(), arrHovered);
else meld(getGrasping(), arrHovered);
}
if (pressed('X'))
remove(getGrasping(), arrHovered);
if (kd['Z'])
{
var c = v2(w/2, h/2);
g_nGravity = v2dirTo(c, mousePos);
drawLine(mousePos, c, 'fff');
}
if (kd['NUM0']) g_timeMult = 0;
if (kd['NUM1']) g_timeMult = 0.005;
if (kd['NUM2']) g_timeMult = 0.02;
if (kd['NUM3']) g_timeMult = 0.05;
if (kd['NUM4']) g_timeMult = 0.2;
if (kd['NUM5']) g_timeMult = 0.5;
if (kd['NUM6']) g_timeMult = 1.0;
var add = v2(0, 0);
var f = fKeys;
var cf = 0;
if (kd['SHIFT'])
{
f *= fShift;
}
if (kd['UP']) { add.y = -f; cf = 1; }
if (kd['DN']) { add.y = +f; cf = 1; }
if (kd['LT']) { add.x = -f; cf = 2; }
if (kd['RT']) { add.x = +f; cf = 3; }
// normalize diagonal speed
if (v2len(add)) add = v2mult(v2norm(add), f);
c0 = null;
if (g_lastUsedObj)
c0 = g_lastUsedObj;
else
$.each(circles, function(i, c)
{
if (c.m.name == 'player')
{
c0 = c;
return false;
}
});
// follow player
if (g_lastUsedObj && g_lastUsedObj.m.name=='player')
$.each(circles, function(i, c)
{
if (c.m.name != 'player' || c==g_lastUsedObj) return;
var a = v2dirTo(c.p, g_lastUsedObj.p);
v2multMe(a, 900*dt);
c.impulse(a);
usePlayerFrames(c);
});
usePlayerFrames(c0);
if (kd['E'])
{
var earthquake = v2rnd(50, 100);
$.each(circles, function(i,c)
{
if (c.mass)
c.impulse( earthquake );
});
}
if (c0)
c0.impulse(add);
kc = [];
kx = [];
}
function usePlayerFrames(c)
{
if (!c || !c.o || !c.o instanceof MBitmap)
return;
var up = -c.v.y;
var dn = c.v.y;
var lt = -c.v.x;
var rt = c.v.x;
var cf = 0;
var mx = maxn(up, dn, lt, rt);
if (mx==up || mx==dn) cf = 1;
if (mx==lt) cf = 2;
if (mx==rt) cf = 3;
if (mx==0) cf = 0;
c.o.currentFrame = cf;
}
////////////////////////////////////////////////////////
// GRID
function drawGrid(on)
{
if (!on) return;
if (!g_grid) return;
var w = stage.stageWidth;
var h = stage.stageHeight;
var mn = p2gpos( v2min(g_gridMin, screenToWorld(0, 0)) );
var mx = p2gpos( v2max(g_gridMax, screenToWorld(w, h)) );
v2addMexy(mx, 1, 1);
var s = g_gridStep;
var h = s/2; // half step
for (var x=mn.x; x <= mx.x; x++)
drawLine(x*s, mn.y*s, x*s, mx.y*s, 'aaa');
for (var y=mn.y; y <= mx.y; y++)
drawLine(mn.x*s, y*s, mx.x*s, y*s, 'aaa');
var arr = [];//getNearby(mousePos, 0);
for (var i=0; i < arr.length; i++)
{
var A = arr[i];
drawCircle(A.p, g_radius, '5f5');
drawLine(mousePos, A.p, 'aaa');
}
$.each(g_gridDyn, function(i, cell)
{
if (!cell || !cell.length) return err('huh?');
var c = cell[0];
var gp = p2gpos(c.p);
drawRect(v2mult(gp, s), v2(s, s), 'fff', 0.2);
});
}
function fillGrid()
{
if (!g_useGrid)
{
g_grid = null;
g_gridDyn = null;
return;
}
var w = stage.stageWidth;
var h = stage.stageHeight;
var s = g_gridStep;
// NOTE: if i wanted to optimize this, i could only recheck objects that moved in the last frame
// therefore i would avoid rehashing 1000s of static circles (if it shows up as performance issue)
g_grid = {};
g_gridDyn = {};
var mn = v2null();
var mx = v2null();
for (var i=0; i<circles.length; i++)
{
var c = circles[i];
if (c.removed) continue; // all (not removed)
var x = Math.floor(c.p.x/s); // calc index
var y = Math.floor(c.p.y/s);
if (mn.x > x) mn.x = x; // keep min/max
if (mn.y > y) mn.y = y;
if (mx.x < x) mx.x = x;
if (mx.y < y) mx.y = y;
var k = x+'-'+y; // key = "X-Y"
if (!g_grid[k]) g_grid[k] = [];
g_grid[k].push(c);
if (!c.mass) continue;
if (!g_gridDyn[k]) g_gridDyn[k] = [];
g_gridDyn[k].push(c);
}
// mult by step
g_gridMin = v2multxy(mn, s, s);
g_gridMax = v2multxy(mx, s, s);
}
var errLast;
function err(s, ret)
{
var now = time();
if (errLast && now-errLast>100)
console.log(s);
errLast = now;
return ret;
}
// position is usual world XY
// radius is radius in which we want to check collision
// iSelf is ORDER of self, so it only returns higher ORDERs (or leave empty if u want all)
// dynamicOnly is what it says
function getNearby(pos, radius, iSelf, dynamicOnly)
{
if (abs(pos.x)+abs(pos.y) > 999999) return err('getNearby wtf', []);
if (typeof iSelf!='number') iSelf = -1;
// calc min/max indices of grid
var r = radius;
var s = g_gridStep;
var mn = v2subxy(pos, r, r);
var mx = v2addxy(pos, r, r);
return getInAABB(mn, mx, dynamicOnly, iSelf);
}
var g_aabbArea;
function getInAABB(mn, mx, dynamicOnly, iSelf)
{
// if no grid - this may become very slow with big levels
if (!g_grid || !g_gridDyn)
{
g_aabbArea = -1;
return getInAABB_noGrid(mn, mx, dynamicOnly, iSelf);
}
if (typeof iSelf!='number') iSelf = -1;
mn = p2gpos(mn);
mx = p2gpos(mx, 'up');
// grid step has to be as big as maximum radius
// that way, we wont miss circles, when we add +1 step to each side of area we are checking
v2addMexy(mn, -1, -1);
v2addMexy(mx, 1, 1);
var arr = [];
var s = g_gridStep;
var df = v2sub(mx, mn);
g_aabbArea = df.x * df.y;
for (var y=mn.y; y<mx.y; y++)
{
for (var x=mn.x; x<mx.x; x++)
{
var g = dynamicOnly ? g_gridDyn : g_grid;
var k = Math.floor(x)+'-'+Math.floor(y);
var gArr = g[k];
if (!gArr) continue;
for (var i=0; i<gArr.length; i++)
{
var c = gArr[i];
if (!c) { err('wtf'); continue; }
if (c.order <= iSelf) continue;
if (c.removed) continue;
arr.push(c);
}
}
}
return arr;
}
function p2gpos(p, up) { up=up?1:0; return v2(up+Math.floor(p.x/g_gridStep), up+Math.floor(p.y/g_gridStep)); }
function p2gkey(p) { return Math.floor(p.x/g_gridStep)+'-'+Math.floor(p.y/g_gridStep); }
function xy2gkey(x, y) { return Math.floor(x/g_gridStep)+'-'+Math.floor(y/g_gridStep); }
function getInAABB_noGrid(mn, mx, dynamicOnly, iSelf)
{
if (typeof iSelf!='number') iSelf = -1;
var arr = [];
for (var i=0; i < circles.length; i++)
{
var c = circles[i];
if (!c) { err('wtf'); continue; }
if (c.removed) continue;
if (c.order <= iSelf) continue;
if (dynamicOnly && !c.mass) continue;
var bOut = (c.p.x < mn.x || c.p.x > mx.x || c.p.y < mn.y || c.p.y > mx.y);
if (!bOut)
arr.push(c);
}
return arr;
}
// GRID
/////////////////////////////////////////////////////////////
function f2rgb(r, g, b)
{
return to_i255(r)*256*256 +
to_i255(g)*256 +
to_i255(b);
}
function heatclr(f01, add)
{
add = add || 0;
// input is f=<0,1>
var f = minmax(f01, 0, 1);
f *= 2;
var r=0,g=0,b=0;
if (f<1)
{
g = f*2;
b = 2-f*2;
}
else
{
f -= 1;
r = f*2;
g = 2-f*2;
}
var clr = f2rgb(r+add, g+add, b+add);
return clr;
}
// in best case (when nothing is removed), it just returns original array
function onlyUnremoved(arr)
{
var i;
for (i=0; i < arr.length; i++)
if (arr[i].removed) break;
// nothing changed, return original array
if (i==arr.length) return arr;
nicelog('onlyUnremoved - something has changed');
var arrUnr = [];
for (i=0; i < arr.length; i++)
{
var a = arr[i];
if (!a.removed) arrUnr.push(a);
}
return arrUnr;
}
function getScreenAABB(reserveRatio)
{
var w = stage.stageWidth;
var h = stage.stageHeight;
var mn = screenToWorld(0, 0);
var mx = screenToWorld(w, h);
var vR = v2sub(mx, mn);
v2multMe(vR, reserveRatio);
v2subMe(mn, vR);
//if (vR.y < 0) vR.y = 0; // if testing with smaller rect, i want it to touch the bottom
v2addMe(mx, vR);
return {mn:mn, mx:mx};
}
var frame_count = 0;
var frame_collisions;
var frame_collision_checks;
var frame_spring_checks;
var activeScreenRatio = -0.0;
var visibleScreenRatio = 0.01;
var circlesActive = [];
var runFrames = -1;
function onEF()
{
frame_count++;
applyGlobalParamsLocally();
//if (! (frame_count%10) )
{
if (dbg) dbg.clear(); // lines, circles
while (dbgs.children.length) // texts
dbgs.removeChildAt(0);
}
stage.removeChild(dbgs); // on top
stage.addChild(dbgs);
framecount++;
dtFrame = get_dt();
dtFrame = 1/60 * 0.5;
dtFrame *= g_timeMult;
processMouse();
processInput();
frame_collisions = 0;
frame_collision_checks = 0;
frame_spring_checks = 0;
//////////////////////////////////////////
// remove removed
circles = onlyUnremoved(circles);
fillGrid();
var aabb = getScreenAABB(activeScreenRatio);
//drawRectO(aabb.mn, aabb.mx, 'f00');
circlesActive = getInAABB(aabb.mn, aabb.mx); // mencari circle aktif dalam grid
g_cellsActive = g_aabbArea;
circlesActive = sortDynamicsFirst(circlesActive);
for (var i=0; i < circles.length; i++) circles[i].active = false;
for (var i=0; i < circlesActive.length; i++) circlesActive[i].active = true;
var run = true;
if (runFrames > -1)
{
if (runFrames==0) run = false;
else runFrames--;
}
if (run)
simulatePhysics( dtFrame );
drawHeatVelocity( g_drawHeat );
debugTexts();
//test_drawPoly();
/* toto uz je inde, a asi to sem treba presunut
// update positions in engine
var cc = circlesActive;
cc = circles; // tmp
for (var i=0; i < cc.length; i++)
{
var c = cc[i];
c.updateEngineData();
}
*/
drawGrid(g_drawGrid);
if (g_jointWidth)
{
$.each(joints, function(i, j)
{
j.dbg_drawJoints();
});
}
}
/*
na masu pasivnych guliciek pouzit algoritmus, ktory ich sceli do polygonu
moct nakreslit polygon, ktory nebude mat realne data o gulickach v sebe, ale bude sa dat z neho odlupovat (or kopat donho dole)
podla nakresleneho polygonu by sa mali zobrazit gulicky po krajoch (default v zoome 1), a vnutro vyfarbit
neskor by sa malo dat odlupat z neho, a tak sa bude upravovat polygon podla odobratej gulicky
*/
function test_drawPoly()
{
var first;
var last;
$.each(circles, function(i, c)
{
if (!i) first=c;
line(last, c);
last = c;
});
line(first, last);
function line(a, b)
{
if (!a || !b) return;
drawLine(a.p, b.p, '000', 2);
}
}
function debugTexts()
{
// removing/melding/solidifying/dynamifying/etc EVERYTHING requires DOUBLE-PRESS
var confirmAction = currentlyInLastSec();
if (confirmAction)
confirmAction = '<b style="color: red;">'+confirmAction.toUpperCase()+' ALL?</b>';
$('#sph').html('<b>fluid</b>'+
confirmAction +
'g: <b>'+g_gravity+'</b>'+
'maxVel: <b>'+nice(sqrt(g_currMaxVel2))+'</b>'+
'#cellsActive: <b>'+g_cellsActive+'</b>'+
'maxPress: <b>'+nice(g_maxPressure)+'</b>'+
'maxPressNear: <b>'+nice(g_maxPressureNear)+'</b>'+
/*'smoothR: <b>'+g_sphRadius+'</b>'+
'stiff: <b>'+g_sphStiff+'</b>'+
'stiffNear: <b>'+g_sphStiffNear+'</b>'+
'restDensity: <b>'+g_sphRestDensity+' ('+nice(g_avgSphDensity)+')'+'</b>'+
*/
'<span class="fright">'+circles.length+'xO &nbsp;'+g_fps+'</span>'+
'');
$('#fps').html('fps: '+g_fps);
$('#tests').html('collisions: '+frame_collisions+
'<br>checks coll: '+frame_collision_checks+
'<br>checks spring: '+frame_spring_checks+
'');
}
function drawHeatVelocity(enabled)
{
var cc = circles[0];
if (!cc) return;
if (enabled)
{
$.each(circles, function(i, c)
{
//if (!c.mass) return;
var f = 0;
switch(0) {
case 0: f = v2len( c.v ); break;
case 1: f = c._seqI/1000; break;
case 2: f = c._seqIabs/1000; break;
case 3: f = c.sphDens*100; break;
case 4: f = c.sphDensNear*100; break;
case 5: f = c.pressure(); break;
case 6: f = c.pressureNear(); break;
}
f /= g_HeatMax * 100;
if (!c.active)
c.setHeat(f);
else
c.unsetHeat();
});
}
else
{
if (!cc.spriteHeat) return;
$.each(circles, function(i, c)
{
c.unsetHeat();
});
}
}
/*
replace $.each with for loop
FIND:
\$\.each\(([A-z]+),[ ]+function[ \t]*\(i, ([a-z])\)([ \n\t]+)\{([ \n\t]+)
REPLACE:
for \(var i=0; i < \1.length; i++\)\3{\4var \2 = \1[i];\4
*/
// dahulukan dinamik circle (water, oil ) di bagian pertama array
function sortDynamicsFirst(arr)
{
var i;
var currentlyDynamics = true;
for (i=0; i < arr.length; i++)
{
var c = arr[i];
if (currentlyDynamics && !c.mass)
currentlyDynamics = false;
if (!currentlyDynamics && c.mass)
break;
}
// dont have to sort if it didnt break
if (i==arr.length) return arr;
/////////////////////////////////////
// otherwise SORT
var sorted = [];
for (var i=0; i < arr.length; i++)
{
var c = arr[i];
if (c.mass) sorted.push(c);
}
for (var i=0; i < arr.length; i++)
{
var c = arr[i];
if (!c.mass) sorted.push(c);
}
for (var i=0; i < sorted.length; i++)
{
sorted[i].order = i;
}
return sorted;
}
var g_avgSphDensity = 0;
var g_maxPressure = 0;
var g_maxPressureNear = 0;
function simulatePhysics(substep_dt)
{
dt = substep_dt;
pairs = [];
g_avgSphDensity = 0;
g_numSph = 0;
g_maxPressure = 0;
g_maxPressureNear = 0;
g_currMaxVel2 = 0;
///////////////////////////////////////////////////
// PARTICLE BASICS
// inisialisasi
for (var i=0; i < circles.length; i++)
{
var c = circles[i];
c.frameStart(); // sph dens dan sph near dibuat sama dengan nol
}
for (var i=0; i < circlesActive.length; i++)
{
var c = circlesActive[i];
if (!c.mass) break; // hanya diberlakukan untuk air, oli, dan partikel-partikel yang memiliki massa
// setelah disorting... maka pada array circlesActive yang dahulu muncul adalah dinamik partikel
c.gravity();
c.moveByVelocity();
c.odrazOdStran(); // jika partikel melewati batas dinding.... pukul kembali
}
/*
if (g_bMelding)
for (var i=0; i < circles.length; i++)
{
var c = circles[i];
c.checkNewJoints(true); // true=only check orderly later
}
*/
// find pairs
if (dt)
for (var i=0; i < circlesActive.length; i++)
{
var c = circlesActive[i];
// since circles are sorted with dynamics first
// we can stop iterating when we find static circle
if (!c.mass) break;
c.findPairs(); // cari pasangan
}
///////////////////////////////////////////////////
var addActive = [];
var addActiveEnd = [];
// smooth collisions
for (var i=0; i < pairs.length; i++)
{
var p = pairs[i];
var A = p.A;
var B = p.B;
A.sphCalculateDensity(B, p); // hitung densitas dan dens-near untuk partikel yag berinteraksi
//if (!A.active) (A.mass?addActive:addActiveEnd).push(A);
//if (!B.active) (B.mass?addActive:addActiveEnd).push(B);
}
var arrX = [];
arrX.append(addActive);
arrX.append(circlesActive);
//arrX.append(addActiveEnd);
//circlesActive = arrX;
for (var i=0; i < circlesActive.length; i++)
{
var c = circlesActive[i];
//if (!c.mass) break;
c.sphCalculatePressure(); // hitung tekanan dan pressure-near
}
for (var i=0; i < pairs.length; i++)
{
var p = pairs[i];
var A = p.A;
var B = p.B;
A.solveCollision(B, p); // gunakan SPH untuk partikel dinamik dan gaya repulsive untuk partikel static
}
for (var i=0; i < circlesActive.length; i++)
{
var c = circlesActive[i];
if (!c.mass) break;
if (c.sph)
c.calcVelocityFromDisplacement();
}
///////////////////////////////////////////////////
// COLLISIONS - RIGID
if (0)
for (var i=0; i < pairs.length; i++) // <-- wtf is this shit?
{
var p = pairs[i];
// compute toTouch to slow particles before collisions
var A = p.A;
var B = p.B;
if (!A.sph && !B.sph)
{
var v = v2sub(A.v, B.v);
v2multMe( v, dt/(A.invM+B.invM)*10 );
v2addMe( A.v, v2mult(v, A.invM) );
v2addMe( B.v, v2mult(v, B.invM) );
}
}
///////////////////////////////////////////////////
for (var i=0; i < circles.length; i++)
{
var c = circles[i];
if (!c.links.length) continue;
c.prepareRK();
}
// only active joints (either of its circles is active)
var jointsA = []; // active
for (var i=0; i < joints.length; i++) joints[i].active = false;
for (var i=0; i < joints.length; i++)
{
var j = joints[i];
if (j.A.active || j.B.active)
jointsA.push(j);
//else drawLine(j.A.p, j.B.p, '000', 3); // show inactive joints
}
// JOINTS
for (var i=0; i < jointsA.length; i++) { jointsA[i].updateRK(1); }
for (var i=0; i < jointsA.length; i++) { jointsA[i].updateRK(2); }
for (var i=0; i < jointsA.length; i++) { jointsA[i].updateRK(3); }
for (var i=0; i < jointsA.length; i++) { jointsA[i].updateRK(4); }
for (var i=0; i < jointsA.length; i++)
{
var j = jointsA[i];
j.update();
if (j.isBroken()) j.remove();
}
joints = onlyUnremoved(joints);
for (var i=0; i < circlesActive.length; i++)
{
var c = circlesActive[i];
if (!c.mass) break;
if (!c.links.length) continue;
v2addMe(c.v, c.a);
//drawLineN(c.p, v2mult(c.a, 0.5), 'fff', 3);
c.a = v2(0, 0);
}
////////////////////////////////////////////
// VISIBILITY
var w = stage.stageWidth;
var h = stage.stageHeight;
// calc AABB
var aabb = getScreenAABB(visibleScreenRatio);
var mn = aabb.mn;
var mx = aabb.mx;
// NOT visible treba vsetkym circles
// a visible by stacilo aj len aktivnym z aabb, ale to mi moc nepomoze
for (var i=0; i < circles.length; i++)
{
var c = circles[i];
var bOut = (c.p.x < mn.x || c.p.x > mx.x || c.p.y < mn.y || c.p.y > mx.y);
if (bOut)
{
c.o.visible = false;
}
else
{
c.o.visible = true;
c.updateEngineData();
}
}
g_avgSphDensity = g_numSph?
g_avgSphDensity/g_numSph:
0;
}
function drawText(x, y, s, clr, nice_number, optionalStage)
{
if (typeof x.x != 'undefined')
{
nice_number=clr;
clr=s;
s=y;
y=x.y;
x=x.x;
}
nice_number = 1; // tmp
if (nice_number && typeof s == 'number')
s = nice(s);
var fontSize = 20;
var t = new TextField();
clr = normalizeClr(clr);
t.setTextFormat( new TextFormat("Arial", fontSize, clr) );
if (!optionalStage) optionalStage = dbgs;
optionalStage.addChild(t);
t.setText(s);
t.x = x;
t.y = y;
}
function drawCircleO(x, y, r, clr, w, parts)
{
var xIsV = (typeof x.x != 'undefined');
if (xIsV)
{ // ak je to vektor..
parts=w;
w=clr;
clr=r;
r=y;
y=x.y;
x=x.x;
}
_drawCircleO(x, y, r, clr, w, parts);
}
function _drawCircleO(x, y, r, clr, w, parts)
{
parts = parts || 20;
var arr = getCirclePoints(parts, r, x, y);
var len = arr.length;
for (var i=0; i < len; i++)
{
var a = arr[i];
var b = arr[ (i+1)%len ];
drawLine(a, b, clr, w);
}
}
function getCirclePoints(parts, r, x, y)
{
var arr = [];
x = x || 0;
y = y || 0;
r = r || 1;
var start = v2(0, -r);
for (var i=0; i <= parts; i++)
{
var n = v2rot(start, i * (360/parts));
arr.push(n);
}
if (x || y)
{
for (var i=0; i < arr.length; i++)
v2addMe( arr[i], v2(x, y) );
}
return arr;
}
function drawCross(v, r, clr, w)
{
drawLineN(v.x-r, v.y, r*2, 0, clr, w);
drawLineN(v.x, v.y-r, 0, r*2, clr, w);
}
function drawCrossBW(v, r)
{
drawLineN(v.x-r, v.y, r*2, 0, '000');
drawLineN(v.x, v.y-r, 0, r*2, 'fff');
}
// drawLineN(vA, vN, c, w)
// drawLineN(vA, nx, ny, c, w)
function drawLineN(ax, ay, bx, by, c, w, perp)
{
var axIsV = (typeof ax.x != 'undefined');
if (axIsV) { // ak je to vektor..
perp=w;
w=c; // vaha je uz v 'c', takze to treba posunut..
c=by;
by=bx;
bx=ay;
ay = ax.y;
ax = ax.x;
}
var bxIsV = (typeof bx.x != 'undefined');
if (bxIsV) {
perp=w;
w=c;
c=by;
by = bx.y;
bx = bx.x;
}
// perpendicular
if (perp)
{
var x = bx;
var y = by;
if (perp=='r' || perp==1) {
bx = -y; // right = 'r' OR 1
by = x;
}
else {
bx = y; // left = anything else
by = -x;
}
}
_drawLine(ax, ay, ax+bx, ay+by, c, w);
}
// drawLine(vA, vB, c, w)
// drawLine(vA, bx, by, c, w)
function drawLine(ax, ay, bx, by, c, w)
{
var axIsV = (typeof ax.x != 'undefined');
if (axIsV) { // ak je to vektor..
w=c; // vaha je uz v 'c', takze to treba posunut..
c=by;
by=bx;
bx=ay;
ay = ax.y;
ax = ax.x;
}
var bxIsV = (typeof bx.x != 'undefined');
if (bxIsV) {
w=c;
c=by;
by = bx.y;
bx = bx.x;
}
_drawLine(ax, ay, bx, by, c, w);
}
function _drawLine(x, y, x2, y2, clr, w)
{
if (!w) w = 1;
clr = normalizeClr(clr);
dbg.lineStyle(w, clr);
dbg.moveTo(x, y);
dbg.lineTo(x2, y2);
return; // new ivank has working width
// fix, kedze to nejde..
if (w > 1)
{
var a = v2(x, y);
var b = v2(x2, y2);
var n = v2dirTo(a, b);
for (var i=1; i < w/2+1; i++)
{
var dx = -n.y * i;
var dy = n.x * i;
drawLine(x+dx, y+dy, x2+dx, y2+dy, clr);
drawLine(x+dx, y-dy, x2+dx, y2-dy, clr);
}
}
}
function drawRectAB(x, y, bx, by, clr, alpha)
{
var xIsV = (typeof x.x != 'undefined');
if (xIsV) { // ak je to vektor..
alpha=clr;
clr=by;
by=bx;
bx=y;
y=x.y;
x=x.x;
}
var bxIsV = (typeof bx.x != 'undefined');
if (bxIsV) {
alpha=clr;
clr=by;
by=bx.y;
bx=bx.x;
}
_drawRect(x, y, bx-x, by-y, clr, alpha);
}
function drawRect(x, y, w, h, clr, alpha)
{
var xIsV = (typeof x.x != 'undefined');
if (xIsV) { // ak je to vektor..
alpha=clr;
clr=h;
h=w;
w=y;
y=x.y;
x=x.x;
}
var wIsV = (typeof w.x != 'undefined');
if (wIsV) {
alpha=clr;
clr=h;
h=w.y;
w=w.x;
}
_drawRect(x, y, w, h, clr, alpha);
}
function drawRectO(ax, ay, bx, by, clr)
{
var axIsV = (typeof ax.x != 'undefined');
if (axIsV) { // ak je to vektor..
clr=by;
by=bx;
bx=ay;
ay=ax.y;
ax=ax.x;
}
var bxIsV = (typeof bx.x != 'undefined');
if (bxIsV) {
clr=by;
by=bx.y;
bx=bx.x;
}
_drawRectO(ax, ay, bx, by, clr);
}
function _drawRectO(x, y, x2, y2, clr)
{
// A---|
// |___B
drawLine(x, y, x2, y, clr);
drawLine(x, y2, x2, y2, clr);
drawLine(x, y, x, y2, clr);
drawLine(x2, y, x2, y2, clr);
}
function _drawRect(x, y, w, h, clr, alpha)
{
if (typeof alpha == 'undefined') alpha = 1;
clr = normalizeClr(clr);
dbg.beginFill(clr, alpha);
dbg.drawRect(x, y, w, h);
}
function drawCircle(x, y, r, c, alpha)
{
var xIsV = (typeof x.x != 'undefined');
if (xIsV) // ak je to vektor..
{
alpha=c;
c=r;
r=y;
y=x.y;
x=x.x;
}
_drawCircle(x, y, r, c, alpha);
}
function _drawCircle(x, y, r, c, alpha)
{
alpha = alpha || 1;
c = normalizeClr(c);
dbg.beginFill(c, alpha);
dbg.drawCircle(x, y, r);
}
function normalizeClr(c)
{
if (typeof c == 'string' && c.length==3)
{
function val(ch) {
ch = parseInt(ch, 16);
ch = minmax(ch, 0, 15) * 17;
return parseInt( ch.toString(16), 16 );
}
var i = 0;
i += val( c[0] ) * 256*256;
i += val( c[1] ) * 256;
i += val( c[2] );
c = i;
}
return c;
}
var last_fps_change = 0, fps_sum=0, fps_num=0;
var last_frame;
function get_dt()
{
var now = time() * 0.001;
if (!last_frame)
last_frame = now;
var dt = (now - last_frame);
// fps
var fps = to_i(1/(max(dt, 0.001)));
fps_sum += fps;
fps_num++;
if (abs(last_fps_change - now) > 0.1)
{
last_fps_change = now;
g_fps = to_i(fps_sum / fps_num);
fps_sum = 0;
fps_num = 0;
}
//
dt = minmax(dt, 0.000001, 0.1);
last_frame = now;
return dt;
}
///////////////////////////////////////////////////////////////////
// libs
function floor(f) { return Math.floor(f); }
function min(a, b) { return Math.min(a, b); }
function max(a, b) { return Math.max(a, b); }
function maxn() {
if (!arguments.length) return;
var mx = arguments[0];
for (var i=1; i < arguments.length; i++)
mx = max(mx, arguments[i]);
return mx;
}
function minmax(f, mn, mx)
{
if (f > mx) return mx;
if (f < mn) return mn;
return f;
}
function minmaxFix(f, mn, mx)
{
if (!isOk(f)) return (mn+mx)/2;
return minmax(f, mn, mx);
}
function absmin(a, b) { return sign(a) * min( abs(a), b ); }
function absmax(a, b) { return sign(a) * max( abs(a), b ); }
function abspow(a, b) { return sign(a) * pow( abs(a), b ); }
function abs(f) { return Math.abs(f); }
function sqrt(f) { return Math.sqrt(f); }
function sign(f) { return f<0?-1:1; }
function pow(f, e) { return Math.pow(f, e); }
function powe(f) { return pow(2.71828183, f); }
function pow10(f) { return pow(10, f); }
function logn(f, n) { return loge(f) / loge(n); }
function loge(f) { return Math.log(f); }
function log10(f) { return loge(f) / Math.log(10); }
function minmax(f, mn, mx) {
if (f<mn) return mn;
if (f>mx) return mx;
return f;
}
function to_i(f) { return parseInt(f); }
function to_i255(f) { return parseInt( minmax(f,0,1)*255 ); }
function fixed(f, dec) { return parseFloat( f.toFixed(dec) ); }
function nicelog()
{
var arr = arguments;
var s = '';
var len = 0;
for (var i=0; i < arr.length; i++)
{
if (typeof arr[i] != 'undefined')
len = i+1;
}
for (var i=0; i < len; i++)
{
var a = arr[i];
var notFirst = i>0;
var isNumber = (typeof a == 'number');
var previousWasString = notFirst && (typeof arr[i-1] == 'string');
if (isNumber)
{
a = nice(a);
a = (a+'').normalizeLength(10);
}
// vector
if (typeof a.x != 'undefined')
a = a.x+' '+a.y;
if (!(isNumber && previousWasString))
a = ' '+a;
s += a;
}
console.log(s);
}
function nice(f)
{
var a = abs(f);
if (a>=10) return fixed(f);
if (a>=1) return fixed(f, 1);
if (a>=0.1) return fixed(f, 2);
return fixed(f, 3);
}
function rndsign() { return rndi()?1:-1; }
function rnd11(f) { return rnd(-f, f); }
/* Maksudnya adalah
jika dipanggil dengan argument mx, maka kembalikan
x + random * (mx -x )
akan tetapi jika hanya dipanggil dengan argument x
makan kembalikan random * x saja.
*/
function rnd(x, mx)
{
if (typeof x != 'number') x = 1;
if (typeof mx == 'number')
return x + rnd(mx-x);
return Math.random()*x;
}
function rndi(x, mx)
{
if (typeof x != 'number') x = 2;
if (typeof mx == 'number')
return x + rndi(mx-x);
return Math.floor( rnd(x) );
}
function rndclr() { return rndi(0xffffff); }
function time()
{
return (new Date).getTime();
}
function removeAt(arr, i)
{
if (arr)
return arr.splice(i, 1);
}
function removeEq(arr, x)
{
if (arr)
for (var i=0; i < arr.length; i++)
{
if (arr[i] === x)
return arr.splice(i, 1);
}
}
function test_fns()
{
var v = v2(2, 5);
return;
v = v2mult(v, 4);
var n = v2norm(v);
v = v2sub(v, n);
var d2 = v2len2(v);
}
function test_class()
{
var v = new V2(2, 5);
return;
v.multMe(4);
var n = v.norm();
v.subMe(n);
var d2 = v.len2();
}
test_fns();
test_class();
// ...Me -> v2multMe, etc ma minimalny rozdiel, ale je kratsi zapis
// trvanie (1000000x):
// var v = v2(1,2); v = v2mult(v, 5); 1550 1590 1600
// var v = v2(1,2); v2multMe(v, 5); 1550 1550 1530
//////////////////////////////////////////////////////
function v2(x, y) { return {x:x, y:y}; }
function v2c(v) { return {x:v.x, y:v.y}; }
function v2copy(v) { return {x:v.x, y:v.y}; }
function v2mult(v, f) { return {x:v.x*f, y:v.y*f}; }
function v2m(v, f) { return {x:v.x*f, y:v.y*f}; }
function v2multxy(v,x,y){ return {x:v.x*x, y:v.y*y}; }
function v2multV(v, b) { return {x:v.x*b.x, y:v.y*b.y}; }
function v2div(v, f) { return {x:v.x/f, y:v.y/f}; }
function v2divV(v, b) { return {x:v.x/b.x, y:v.y/b.y}; }
function v2add(v, b) { return {x:v.x+b.x, y:v.y+b.y}; }
function v2sub(v, b) { return {x:v.x-b.x, y:v.y-b.y}; }
function v2addxy(v, x,y){ return {x:v.x+x, y:v.y+y}; }
function v2subxy(v, x,y){ return {x:v.x-x, y:v.y-y}; }
function v2inv(v) { return {x:-v.x, y:-v.y}; }
function v2len(t) { return Math.sqrt(t.x*t.x + t.y*t.y); }
function v2len2(t) { return t.x*t.x + t.y*t.y; }
function v2dist(t, v) { var x=t.x-v.x, y=t.y-v.y; return Math.sqrt(x*x+y*y); }
function v2dist2(t, v) { var x=t.x-v.x, y=t.y-v.y; return x*x+y*y; }
function v2dirTo(t, v) { return v2norm(v2sub(v, t)); }
function v2dot(t, v) { return t.x*v.x + t.y*v.y; }
function v2p(t) { return t.x.toFixed(2)+' '+t.y.toFixed(2); }
function v2null(v) { if (v) v.x=v.y=0; else return {x:0, y:0}; }
function v2min(a, b) { return v2( min(a.x,b.x), min(a.y,b.y) ); }
function v2max(a, b) { return v2( max(a.x,b.x), max(a.y,b.y) ); }
function v2norm(v)
{
var len = Math.sqrt(v.x*v.x+v.y*v.y);
if (len == 0) len = 1;
len = 1/len;
return {x: v.x*len, y: v.y*len};
}
function v2center(a, b) { return v2add( a, v2mult( v2sub(b,a),0.5 ) ); }
function v2perp(a, f) { f=f||1; return v2(-a.y*f, a.x*f); }
function v2perpL(a) { return v2(a.y, -a.x); }
function v2perpMe(v, f) { f=f||1; var y=v.y; v.y=v.x*f; v.x=-y*f; }
function v2perpMeL(v) { var x=v.x; v.x=v.y; v.y=-x; }
function v2pow(v, f) { return v2( abspow(v.x, f), abspow(v.y, f) ); }
function v2powMe(v, f) { v.x = abspow(v.x, f); v.y = abspow(v.y, f); }
function v2avg()
{
var v = v2(0, 0);
var num = arguments.length;
for (var i=0; i < num; i++)
{
var a = arguments[i];
v.x += a.x;
v.y += a.y;
}
v2divMe(v, num);
return v;
}
function toRad(deg) { return deg * Math.PI / 180; }
function toDeg(rad) { return deg / (Math.PI / 180); }
function v2rot(v, ang)
{
var rad = toRad(ang);
var c = Math.cos(rad);
var s = Math.sin(rad);
var x = v.x*c - v.y*s;
var y = v.x*s + v.y*c;
return v2(x, y);
}
// a,b - circles positions
// m - maxDist
function v2isCloserThan(a, b, m)
{
var x = a.x-b.x;
if (x > m || -x > m) return false;
var y = a.y-b.y;
if (y > m || -y > m) return false;
var d2 = x*x + y*y;
var m2 = m*m;
return (d2 < m2);
}
function v2isFurtherThan(t, v, maxDist)
{
return !v2isCloserThan(t, v, maxDist);
}
function v2rnd(mn, mx)
{
return v2( rnd(mn, mx)*rndsign(), rnd(mn, mx)*rndsign() );
}
/////////////
function v2multMe(v, f) { v.x*=f; v.y*=f; }
function v2divMe(v, f) { v.x/=f; v.y/=f; }
function v2addMe(v, b) { v.x+=b.x; v.y+=b.y; }
function v2addMex(v, x) { v.x+=x; }
function v2addMey(v, y) { v.y+=y; }
function v2addMexy(v, x, y) { v.x+=x; v.y+=y; }
function v2subMe(v, b) { v.x-=b.x; v.y-=b.y; }
function v2normMe(v)
{
var len = Math.sqrt(v.x*v.x+v.y*v.y);
if (len == 0) len = 1;
len = 1/len;
v.x*=len;
v.y*=len;
}
//////////////////////////////////////////////////////
function V2(x, y)
{
var t = this;
t.x = x || 0;
t.y = y || 0;
t.copy = function()
{
return new V2(t.x, t.y);
}
t.set = function(x, y)
{
t.x = x;
t.y = y;
return this;
}
t.multMe = function(f)
{
t.x *= f;
t.y *= f;
return t;
}
t.addMe = function(v)
{
t.x += v.x;
t.y += v.y;
return t;
}
t.subMe = function(v)
{
t.x -= v.x;
t.y -= v.y;
return t;
}
t.normalizeMe = function()
{
var v = normalized(t);
t.x = v.x;
t.y = v.y;
return t;
}
t.len = function() { return Math.sqrt(t.x*t.x + t.y*t.y); }
t.len2 = function() { return t.x*t.x + t.y*t.y; }
t.dist = function(v) { var x=t.x-v.x, y=t.y-v.y; return Math.sqrt(x*x+y*y); }
t.dist2 = function(v) { var x=t.x-v.x, y=t.y-v.y; return x*x+y*y; }
t.dirTo = function(v) { return v.sub(t).norm(); }
// operatory: c=a*f -> c=a.mult(f)
t.norm = function() { return normalized(t); }
t.dot = function(v) { return t.x*v.x + t.y*v.y; }
t.mult = function(f) { return new V2(t.x*f, t.y*f); }
t.sub = function(v) { return new V2(t.x-v.x, t.y-v.y); }
t.add = function(v) { return new V2(t.x+v.x, t.y+v.y); }
t.isFurtherThan = function(v, maxDist)
{
var d2 = t.dist2(v);
var m2 = maxDist*maxDist;
if (d2 > m2)
return true;
}
function normalized(a)
{
var len = a.len();
var inv = len>0 ? 1/len : 1;
var x = a.x * inv;
var y = a.y * inv;
return new V2(x, y);
}
// len pre zaujimavost, toto je 3-tia verzia funkcie, ktora nasobi..
// treba to nejak domysliet, ako umoznit spravit jeden vzorec
// podla ktoreho sa vygeneruju vsetky druhy funkcii
t.multing = function(a, b)
{
return new V2(a.x*b.y - a.y*b.x);
}
t.p = function()
{
return t.x.toFixed(2)+' '+t.y.toFixed(2);
}
}
</script>
<body>
<canvas id="c"></canvas>
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