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simulation.html
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simulation.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Simulation!</title>
<meta charset="utf-8">
<style>
* {
user-select: none;
overflow: hidden;
font-family: "Gill Sans", "Gill Sans MT", Calibri, Tahoma;
}
canvas {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
}
button {
font-size: 15px;
border: solid 1.5px #262626;
border-radius: 5px;
padding: 1px;
padding-left: 4px;
padding-right: 4px;
background-color: #1eaed2;
}
button:hover {
background-color: #82cdc5;
}
button:active {
background-color: #c7ebe5;
}
div {
position: fixed;
top: 6px;
left: 10px;
width: calc(100% - 340px);
}
@media (max-width: 550px) {
button {
display: block;
}
div {
width: auto;
}
}
input {
font-family: monospace;
}
i {
font-weight: 600;
display: block;
font-size: 30px;
color: #111c;
}
textarea {
resize: none;
overflow: scroll;
font-family: Calibri, Tahoma;
font-size: 16px;
}
u {
cursor: pointer;
color: #19c;
font-size: 18px;
font-family: Tahoma;
}
#show {
position: fixed;
top: 74px;
right: 143px;
}
#hide {
font-weight: 600;
font-size: 20px;
position: fixed;
top: 10px;
left: 15px;
width: 58px;
}
p {
font-size: 2px;
}
span {
font-weight: 500;
font-size: 18px;
}
em {
cursor: pointer;
opacity: 0;
font-size: 32px;
font-weight: 700;
display: block;
color: #611;
transition: opacity 500ms;
}
</style>
</head>
<body>
<canvas width="0" height="0"></canvas>
<div id="stuff">
<i>Creature simulation:</i>
<button id="fullA" onclick="fullscreen()">Fullscreen</button>
<button id="fullB" onclick="stopFullscreen()">Exit Fullscreen</button>
<p></p>
<button onclick="iterations = 500">500 iterations/tick</button>
<button onclick="iterations = 250">250 iterations/tick</button>
<button onclick="iterations = 100">100 iterations/tick</button>
<button onclick="iterations = 25">25 iterations/tick</button>
<button onclick="iterations = 10">10 iterations/tick</button>
<button onclick="iterations = 5">5 iterations/tick</button>
<button onclick="iterations = 2">2 iterations/tick</button>
<button onclick="iterations = 1">1 iteration/tick</button>
<button onclick="reset()">Reseed</button>
<br>
<button onclick="foodAmount = 0">No food</button>
<button onclick="foodAmount = -10">0.1 food</button>
<button onclick="foodAmount = -4">0.25 food/tick</button>
<button onclick="foodAmount = -2">0.5 food/tick</button>
<button onclick="foodAmount = 1">1 food/tick</button>
<button onclick="foodAmount = 2">2 food/tick (default)</button>
<button onclick="foodAmount = 5">5 food/tick</button>
<button onclick="foodAmount = 10">10 food/tick</button>
<br>
<button onclick="addPrey(1)">Add prey</button>
<button onclick="addPrey(10)">Add 10 prey</button>
<button onclick="addPrey(100)">Add 100 prey</button>
<button onclick="addPredator(1)">Add predator</button>
<button onclick="addPredator(10)">Add 10 predators</button>
<button onclick="addPredator(100)">Add 100 predators</button>
<button onclick="empty()">Remove creatures</button>
<button onclick="reset(true)">Reset <b>(keeps the seed)</b></button>
<p></p>
<button onclick="pause()" id="a">Pause</button>
<button onclick="play()" style="display: none" id="b">Play</button>
<button onclick="new Saver(0).save()">Save</button>
<p></p>
<textarea rows="4" cols="25" placeholder="Paste your save file here to import it..."
oninput="new Saver(0).load(this.value)"></textarea>
<br>
<b>
Food: <span></span>
Prey: <span></span>
Predators: <span></span>
</b>
<br>
Seed (controls all random numbers): <input oninput="reset(true)" placeholder="Simulation seed">
<br>
<b>Took <span></span> to render and <span></span> to update</b>
<br>
<input value="500" placeholder="Width" oninput="mapW = bounds(this.value, 10, 100000); reset()">
<input value="500" placeholder="Height" oninput="mapH = bounds(this.value, 10, 100000); reset()">
<br>
<span id="info"></span>
<em id="note" onclick="fade = 1"></em>
<u onclick="showStats = true" id="show">More...</u>
</div>
<u onclick="showStats = false" id="hide">Close</u>
<script id="error">
"use strict"
var draw
var errors = []
onerror = function (e, t, a, b, o) {
document.body.innerHTML = "<i style='user-select:all;overflow:scroll;font-size:21px'>Sorry, but an error occurred on our end. Try contacting the developer for more details.<br>Technical information:<br>" + e + " at " + a + "<br>Stack:<br>----------<br>" + o.stack.replace(/\n/g, "\r\n") + "</i><br><br><b style='font-weight:600'>You can <u onclick='location.reload()'>reload</u> this page. If this problem persists, try clearing your browser data..</b>"
document.body.style = "white-space:pre;font-size:22px"
draw = function () { }
onerror = null
}
</script>
<script id="script">
"use strict"
script.remove()
error.remove()
// Get the elements based on the tag names:
const canvas = document.getElementsByTagName("canvas")[0]
const ctx = canvas.getContext("2d")
const spans = document.getElementsByTagName("span")
const foodElem = spans[0]
const preyElem = spans[1]
const predatorsElem = spans[2]
const timeElem = spans[3]
const updateElem = spans[4]
const info = spans[5]
const seedElem = document.getElementsByTagName("input")[0]
// Keep the values between the bounds given:
function bounds(str, min, max) {
var value = Number(str)
if (value !== value) {
notify("Invalid value!")
return min
}
return Math.min(max, Math.max(min, value))
}
// We use a seed so that users can create the same results every time.
function seedRNG(str) {
// Convert strings into a seed
var h1 = 1779033703, h2 = 3144134277,
h3 = 1013904242, h4 = 2773480762
for (var i = 0, k; i < str.length; i++) {
k = str.charCodeAt(i)
h1 = h2 ^ Math.imul(h1 ^ k, 597399067)
h2 = h3 ^ Math.imul(h2 ^ k, 2869860233)
h3 = h4 ^ Math.imul(h3 ^ k, 951274213)
h4 = h1 ^ Math.imul(h4 ^ k, 2716044179)
}
h1 = Math.imul(h3 ^ (h1 >>> 18), 597399067)
h2 = Math.imul(h4 ^ (h2 >>> 22), 2869860233)
h3 = Math.imul(h1 ^ (h3 >>> 17), 951274213)
h4 = Math.imul(h2 ^ (h4 >>> 19), 2716044179)
seedA = (h1 ^ h2 ^ h3 ^ h4) >>> 0
seedB = (h2 ^ h1) >>> 0
seedC = (h3 ^ h1) >>> 0
seedD = (h4 ^ h1) >>> 0
}
// Generate the random numbers here:
function random() {
rand++
var t = seedB << 9, r = seedA * 5; r = (r << 7 | r >>> 25) * 9
seedC ^= seedA
seedD ^= seedB
seedB ^= seedC
seedA ^= seedD
seedC ^= t
seedD = seedD << 11 | seedD >>> 21
return (r >>> 0) / 4294967296
}
var random, w, h, pixels
var paused = false, select = 0, rand = 0
// Variables for canvas (calculated on resize)
var gradient, titleX, moveX
var mapW = 500, mapH = 500, zoom = 1, panX = 50, panY = 50
function resize() {
w = Math.round(innerWidth * devicePixelRatio)
h = Math.round(innerHeight * devicePixelRatio)
pixels = w * h
canvas.width = w
canvas.height = h
canvas.style.width = innerWidth + "px"
canvas.style.height = innerHeight + "px"
// Here we detect the fullscreen. It ends up working for ALMOST all cases with some extra work in the other fullscreen functions.
if (justRequested) {
justRequested = false
} else if (Math.abs(innerHeight - screen.height) < 4) {
fullA.style.display = "none"
fullB.style.display = null
} else {
fullA.style.display = null
fullB.style.display = "none"
}
// Update the gradient
gradient = ctx.createLinearGradient(innerWidth - 250, 75, innerWidth - 75, 75)
gradient.addColorStop(0, "#e89820")
gradient.addColorStop(0.5, "#eddc1f")
gradient.addColorStop(1, "#281")
// Update the title coordinates
ctx.font = "bold 32px 'Gill Sans', 'Gill Sans MT', Calibri, Tahoma"
titleX = innerWidth - 175 - 0.5 * ctx.measureText("Creature info:").width
ctx.font = "bold 28px 'Gill Sans', 'Gill Sans MT', Calibri, Tahoma"
moveX = 160 - 0.5 * ctx.measureText("Movement:").width
}
var justRequested = false
function fullscreen() {
if (document.documentElement.requestFullscreen) {
document.documentElement.requestFullscreen()
fullA.style.display = "none"
fullB.style.display = null
// We set this value to true so that we can override resize in case it doesn't work.
justRequested = true
} else if (document.documentElement.webkitRequestFullscreen) {
document.documentElement.webkitRequestFullscreen()
fullA.style.display = "none"
fullB.style.display = null
justRequested = true
}
}
function stopFullscreen() {
if (document.exitFullscreen) {
document.exitFullscreen()
} else if (document.webkitExitFullscreen) {
document.webkitExitFullscreen()
}
}
// Object-oriented methods to save files:
function Saver(id) {
this.id = id
}
Saver.prototype.save = function () {
try {
var data = [this.id, food, len, seedA, seedB, seedC, seedD]
for (var i = 0; i < food; i++) {
data.push(foodX[i], foodY[i])
}
for (i = 0; i < len; i++) {
var c = creatures[i]
// We don't save the "gold" property. Sorry!
data.push(c.x, c.y, c.id, 10000 * c.generation + c.age * 16 + c.type, c.rotation, c.reproduceTime, c.reproduceWait, ...c.layer1.weights, ...c.layer1.biases, ...c.layer2.weights, ...c.layer2.biases)
}
// The float data is compacted in non-standard Base64:
this.to64(new Float64Array(data))
} catch (e) {
notify("Aaaack! An error occurred while attempting to save the file. This is likely an issue on our side.\n----------\n" + e.stack)
}
}
Saver.prototype.load = function (info) {
try {
var text = info.trim()
if (text.length !== 0) {
// Convert it back into standard Base64 (and do stuff in from64):
var t = text.indexOf("|")
if (t === -1) {
notify("Could not find the version value!")
return
}
gameSeed = atob(text.slice(0, t).replace("%", "==").replace("$", "="))
seedElem.value = gameSeed
var data = text.slice(t + 2)
var c = text.charCodeAt(t + 1)
var base64 = data.replace(/~/g, "AAAAAA").replace(/,/g, "AAA").replace(/_/g, "/")
if (c === 49) {
base64 += "="
} else if (c === 50) {
base64 += "=="
}
this.from64(base64)
}
} catch (e) {
notify("Sorry, but we could not import the file.\nThis may be because the data has been malformed, or an issue on our side. If this keeps happening, kindly notify the developer. (Coding is hard!)\n\----------\n" + e.stack)
}
}
Saver.prototype.to64 = function (array) {
// Use a FileReader to generate a base64 data URI
var reader = new FileReader()
reader.onload = () => {
var result = reader.result
var len = result.length
var a = result.charCodeAt(len - 1)
var t = 0
if (a === 61) {
t++
if (result.charCodeAt(len - 2) === 61) {
t++
}
}
result = btoa(gameSeed).replace("==", "%").replace("=", "$") + "|" + t + result.slice(result.indexOf(",") + 1, len - t).replace(/\//g, "_").replace(/AAAAAA/g, "~").replace(/AAA/g, ",")
// Copy the result
navigator.clipboard.writeText(result).then(() => notify("Copied!"))
}
reader.readAsDataURL(new Blob([new Uint8Array(array.buffer)]))
}
Saver.prototype.from64 = function (data) {
// Convert it into a Float64Array first:
var t = atob(data)
var length = t.length
var array = new Uint8Array(length)
for (var i = 0; i < len; i++) {
array[i] = t.charCodeAt(i)
}
array = new Float64Array(array.buffer)
var version = Math.round(array[0])
if (version === 0) {
food = array[1]
len = array[2]
seedA = array[3]
seedB = array[4]
seedC = array[5]
seedD = array[6]
notify("Successfully imported!")
} else if (version > this.id) {
notify("It appears that you're using a version that is ahead! The current version is " + this.id + ", and you're somehow on version " + version + "!")
} else if (!isFinite(version)) {
notify("Oh no! The version number is invalid!")
} else {
notify("This version (" + version + ") is not supported. The current version is " + this.id + ".")
}
}
var fade = 0
function notify(text) {
note.textContent = text
note.style.opacity = 1
fade = performance.now() + 2000
}
function drawCreature(age, px, py, rotation, fill, stroke, type) {
var x = px * mapW
var y = py * mapH
// Draw the creature's body
if (fill === "rainbow") {
var rainbow = ctx.createLinearGradient(0, 0, mapW, mapH)
rainbow.addColorStop(0, "#e33b1e")
rainbow.addColorStop(0.12, "#fc9517")
rainbow.addColorStop(0.24, "#e0be12")
rainbow.addColorStop(0.36, "#50c41d")
rainbow.addColorStop(0.48, "#11c2b9")
rainbow.addColorStop(0.6, "#0e67b0")
rainbow.addColorStop(0.8, "#d150eb")
rainbow.addColorStop(1, "#f51d7b")
ctx.fillStyle = rainbow
} else {
if (age < 128) {
if (age < 8) {
fill += "0"
}
fill += (2 * age).toString(16)
}
ctx.fillStyle = fill
}
ctx.lineWidth = 1.5
ctx.strokeStyle = stroke
ctx.beginPath()
ctx.ellipse(x, y, 32, 20, rotation, 0, 6.283185307179586)
ctx.fill()
ctx.stroke()
// Draw the eyes
ctx.fillStyle = "#fffd"
var r1 = rotation - 0.55
var a = Math.cos(r1)
var b = Math.sin(r1)
ctx.beginPath()
var r2 = rotation + 0.55
var c = Math.cos(r2)
var d = Math.sin(r2)
var x1 = x + 17 * a
var y1 = y + 15 * b
var x2 = x + 17 * c
var y2 = y + 15 * d
ctx.arc(x1, y1, 5.5, 0, 6.283185307179586)
ctx.arc(x2, y2, 5.5, 0, 6.283185307179586)
ctx.closePath()
ctx.fill()
ctx.fillStyle = "#000"
var diffY = mainY / zoom - panY - y1
var diffX = mainX / zoom - panX - x1
// Only make eyes look at the mouse if it's close enough (we consider one eye because the difference doesn't really matter)
var dist = diffX * diffX + diffY * diffY
var r = 3
if (dist < 40000) {
var m = 0.13 - Math.pow(dist * 0.25, 0.8) * 0.00003
var t = Math.atan2(diffY, diffX)
x1 = x + 16 * (a + m * Math.cos(t))
y1 = y + 15 * (b + m * Math.sin(t))
t = Math.atan2(mainY / zoom - panY - y2, mainX / zoom - panX - x2)
x2 = x + 16 * (c + m * Math.cos(t))
y2 = y + 15 * (d + m * Math.sin(t))
// Change the color and increase the radius (so it looks like the creature is following your pointer)
ctx.fillStyle = "#b52"
r = 4.2 - 0.00002 * dist
} else {
// Instead, look at the nearest food for prey and nearest prey for predator:
var near
if (type === PREY) {
near = nearestFood(px, py, 0.1)
} else {
near = nearestCreature(px, py, 0.2, PREY)
}
if (near[0] !== -1) {
var t = Math.atan2(y1 - near[1], x1 - near[0])
x1 = x + 17 * (a + 0.15 * Math.cos(t))
y1 = y + 15 * (b + 0.15 * Math.sin(t))
t = Math.atan2(y2 - near[1], x2 - near[0])
x2 = x + 17 * (c + 0.15 * Math.cos(t))
y2 = y + 15 * (d + 0.15 * Math.sin(t))
}
}
ctx.beginPath()
ctx.arc(x1, y1, r, 0, 6.283185307179586)
ctx.arc(x2, y2, r, 0, 6.283185307179586)
ctx.closePath()
ctx.fill()
ctx.fillStyle = "#100"
// Add a small eye if it's colored:
if (dist < 40000) {
ctx.beginPath()
ctx.arc(x1, y1, 1.75, 0, 6.283185307179586)
ctx.arc(x2, y2, 1.75, 0, 6.283185307179586)
ctx.closePath()
ctx.fill()
}
}
function pause() {
paused = true
a.style.display = "none"
b.style.display = null
}
function play() {
paused = false
a.style.display = null
b.style.display = "none"
draw()
}
function Array1(a, b) {
var array = Array(a)
for (var i = 0; i < a; i++) {
array[i] = 0
}
return array
}
function Layer(a, b, weights, biases) {
this.a = a
this.b = b
this.weights = mutateW(a, b, weights)
this.biases = mutateB(b, biases)
}
Layer.prototype.calc = function (inputs) {
var array = Array(this.a)
for (var i = 0; i < this.b; i++) {
var input = this.biases[i]
var m = i * this.a
for (var t = 0; t < this.a; t++) {
input += inputs[t] * this.weights[t + m]
}
array[i] = input
}
return array
}
// Mutate values randomly. This simulates EVOLUTION!
function mutateW(a, b, weights) {
var len = a * b
var result = Array(len)
for (var i = 0; i < len; i++) {
result[i] = weights[i] + 0.0006 * random() - 0.0003
}
var t = random() * 2 + 0.8
for (i = 0; i < t; i++) {
result[Math.floor(len * random())] += 0.8 * random() * random() - 0.4
}
return result
}
// We also mutate the biases, although we do it a bit less.
function mutateB(b, biases) {
var result = biases.slice()
for (var i = 0; i < b; i++) {
result[i] += 0.0004 * random() - 0.0002
}
var t = random() * 2 + 0.8
for (i = 0; i < t; i++) {
result[Math.floor(b * random())] += 0.6 * Math.pow(random(), 1.6) * random() - 0.3
}
return result
}
// Limit the maximum number of creatures (don't want extreme lag)
const limit = 1000
const PREY = 0
const PREDATOR = 1
var iterations = 1, foodAmount = 2, tick = 0, ai = 0, lucky = false, unlucky = false
var gameSeed, seedA, seedB, seedC, seedD, len, creatures, food, foodX, foodY, showStats, total
// The huge function to help create new creatures!
function newCreature(type, x = 0.1 + 0.8 * random(), y = 0.1 + 0.8 * random(), w1 = Array1(36), b1 = Array1(4), w2 = Array1(8), b2 = Array1(2), data = (type === PREDATOR ? {
topSpeed: 2.7 + 1.3 * random(),
vision: 0.2 + 0.12 * random()
} : {
topSpeed: 3 + 1.1 * random(),
vision: 0.1 + 0.07 * random()
}), generation = 1) {
var obj = {
topSpeed: Math.max(0.2, data.topSpeed + 0.06 * random() - 0.03),
vision: Math.max(0.0003, data.vision + 0.0002 * random() - 0.0001)
}
// Only prey can be a special color:
var canColor = type === PREY && total > 75
return {
data: obj,
layer1: new Layer(9, 4, w1, b1),
layer2: new Layer(4, 2, w2, b2),
x: x,
y: y,
type: type,
rotation: 6.283185307179586 * random(),
reproduceTime: 0.8 + 0.3 * random(),
reproduceWait: (type === PREDATOR ? 20 + 10 * random() : 40 + 20 * random()),
energy: (type === PREDATOR ? 1.2 : 1) + 0.4 * random(),
age: 1000 + Math.ceil(400 * random()),
speed: 0,
rainbow: gameSeed === "rainbow" || canColor && (random() < (lucky ? 0.05 : unlucky ? 0 : 0.00000014)),
carrot: gameSeed === "carrot" || canColor && (random() < (lucky ? 0.1 : unlucky ? 0 : 0.00000068)),
ghost: gameSeed === "ghost" || canColor && (random() < (lucky ? 0.1 : unlucky ? 0 : 0.0000037)),
dark: gameSeed === "dark" || canColor && (random() < (lucky ? 0.1 : unlucky ? 0 : 0.000013)),
pale: gameSeed === "crystals" || canColor && (random() < (lucky ? 0.1 : unlucky ? 0 : 0.00006)),
gold: gameSeed === "gold" || canColor && (random() < (lucky ? 0.1 : unlucky ? 0 : 0.00022)),
silver: gameSeed === "metal" || canColor && (random() < (lucky ? 0.1 : unlucky ? 0 : 0.0028)),
gem: gameSeed === "blue" || canColor && (random() < (lucky ? 0.1 : unlucky ? 0 : 0.006)),
generation: generation,
id: ++total
}
}
// Set up everything here:
function reset(seed) {
ai = 0
rand = 0
foodAmount = 2
if (seed == null) {
gameSeed = ""
// Reseed the function
var values = new Uint32Array(15)
crypto.getRandomValues(values)
for (var i = 0; i < 10; i++) {
gameSeed += "01234567890123456789abcdefghijklmnopqrstuvwxyz"[Math.floor(values[i] * 46 / 4294967296)]
}
seedElem.value = gameSeed
} else {
gameSeed = seedElem.value
}
// Lucky colors!
unlucky = gameSeed === "unlucky"
lucky = gameSeed === "lucky"
seedRNG(gameSeed)
// The creature count is randomly generated.
len = Math.floor(60 + 20 * random())
select = Math.floor(rand32() * len)
tick = 0
creatures = Array(len)
foodX = Array(100)
foodY = Array(100)
food = 100
// Reset creature IDs
total = 0
// Create 100 organisms
for (var i = 0; i < len; i++) {
var c
if (i + 2 < len * 0.2) {
c = newCreature(PREDATOR, 0.4, 0.4)
} else {
c = newCreature(PREY, 0.4 + 0.2 * random(), 0.4 + 0.2 * random())
}
// Give it a little energy boost
c.energy++
creatures[i] = c
}
for (i = 0; i < 100; i++) {
foodX[i] = 0.1 + 0.8 * random()
foodY[i] = 0.1 + 0.8 * random()
}
if (paused) {
updateText()
render()
}
}
function addPrey(n) {
for (var i = 0; i < n; i++) {
if (len < 1000) {
creatures.push(newCreature(PREY))
len++
}
}
if (paused) {
render()
}
}
function addPredator(n) {
for (var i = 0; i < n; i++) {
if (len < 1000) {
creatures.push(newCreature(PREDATOR))
len++
}
}
if (paused) {
render()
}
}
function empty() {
creatures = []
len = 0
if (paused) {
render()
}
}
function nearestFood(cx, cy, max) {
var dist = 999999
var x, y, m
for (var l = 0; l < food; l++) {
var tx = cx - foodX[l]
var ty = cy - foodY[l]
var d = tx * tx + ty * ty
if (d < dist) {
dist = d
m = l
x = foodX[l]
y = foodY[l]
}
}
if (dist > max * max) {
return [-1, -1, -1, 999999]
}
return [x, y, m, dist]
}
function nearestCreature(cx, cy, max, type) {
var dist = 999999
var x, y, m
for (var l = 0; l < len; l++) {
var c = creatures[l]
if (c.type === type) {
var a = c.x
var b = c.y
var tx = cx - a
var ty = cy - b
var d = tx * tx + ty * ty
if (d < dist && d !== 0) {
dist = d
m = l
x = a
y = b
}
}
}
if (dist > 1.8 * max * max) {
return [-1, -1, -1, 999999]
}
return [x, y, m, dist]
}
function activate(array) {
// Run the activation function on each node for the neural networks
for (var i = 0; i < array.length; i++) {
if (array[i] < 0) {
array[i] = 0
}
}
return array
}
var mouseX = 0, mouseY = 0, touchX = 0, touchY = 0, mainX = 0, mainY = 0
var mouseDown = false, touchDown = false
onkeydown = function (e) {
if (e.keyCode === 27) {
// The user pressed the escape key.
mouseDown = false
touchDown = false
}
}
onmousedown = function (e) {
var tag = e.target.tagName
if (tag !== "BUTTON" && tag !== "INPUT" && tag !== "TEXTAREA") {
// The mouse always overrides the touchscreen: otherwise, some smart users might realize you can get the program to shake rapidly by combining the two!
mouseDown = true
touchDown = false
mouseX = e.pageX
mouseY = e.pageY
mainX = Math.round(mouseX * devicePixelRatio)
mainY = Math.round(mouseY * devicePixelRatio)
if (paused) {
render()
}
}
}
onmousemove = function (e) {
if (mouseDown) {
panX += (e.pageX - mouseX) / zoom
panY += (e.pageY - mouseY) / zoom
}
mouseX = e.pageX
mouseY = e.pageY
if (!touchDown) {
mainX = Math.round(mouseX * devicePixelRatio)
mainY = Math.round(mouseY * devicePixelRatio)
}
if (paused) {
render()
}
}
onmouseup = () => mouseDown = false
onblur = () => {
mouseDown = false
touchDown = false
}
document.addEventListener("touchstart", function (e) {
if (e.touches.length !== 1) {
touchDown = false
e.preventDefault()
} else if (!mouseDown) {
// Just because the variable says "mouse" doesn't mean touchscreen doesn't work!
var touch = e.touches[0]
var tag = document.elementFromPoint(touch.pageX, touch.pageY).tagName
if (tag !== "BUTTON" && tag !== "INPUT" && tag !== "TEXTAREA") {
touchX = touch.pageX
touchY = touch.pageY
mainX = Math.round(touchX * devicePixelRatio)
mainY = Math.round(touchY * devicePixelRatio)
touchDown = true
}
}
}, { passive: false })
document.addEventListener("touchmove", function (e) {
e.preventDefault()
if (e.touches.length !== 1) {
touchDown = false
} else {
var touch = e.touches[0]
if (touchDown) {
panX += (touch.pageX - touchX) / zoom
panY += (touch.pageY - touchY) / zoom
}
touchX = touch.pageX
touchY = touch.pageY
mainX = Math.round(touch.pageX * devicePixelRatio)
mainY = Math.round(touch.pageY * devicePixelRatio)
if (paused) {
render()
}
}
}, { passive: false })
document.addEventListener("touchend", () => {
touchDown = false
})
document.addEventListener("wheel", function (e) {
var tag = e.target.tagName
if (tag !== "BUTTON" && tag !== "INPUT" && tag !== "TEXTAREA") {
if (e.ctrlKey) {
e.preventDefault()
}
// Sadly, updating the zoom is a convoluted mess.
var newZoom
if (e.deltaY > 0) {
newZoom = Math.max(0.2, zoom / 1.1)
} else {
newZoom = Math.min(5, zoom * 1.1)
}
if (zoom !== newZoom) {
var x = (mainX / zoom + panX)
var y = (mainY / zoom + panY)
panX += x * (newZoom - zoom)
panY += y * (newZoom - zoom)
zoom = newZoom
if (paused) {
render()
}
}
}
}, { passive: false })
onclick = e => {
var tag = e.target.tagName
if (tag !== "BUTTON" && tag !== "INPUT" && tag !== "TEXTAREA" && len > 0) {
// Find the closest organism and select it:
var x = (e.pageX / zoom - panX) / mapW
var y = (e.pageY / zoom - panY) / mapH
var dist = 999999
var m = -1
for (var i = 0; i < len; i++) {
var c = creatures[i]
var a = c.x - x
var b = c.y - y
var d = a * a + b * b
if (d < dist) {
dist = d
m = i
}
}
if (dist < 0.075 && m !== select) {
select = m
if (paused) {
render()
}
}
}
}
function updateText() {
foodElem.textContent = food
// Count prey and predators
var prey = 0
var predators = 0
for (var i = 0; i < len; i++) {
if (creatures[i].type === PREY) {
prey++
} else {
predators++
}
}
preyElem.textContent = prey
predatorsElem.textContent = predators
info.innerHTML = "There are <b>" + len + "</b> creatures currently, and a total of <b>" + total + "</b> creatures have been created.<br>The simulation has run for <b>" + tick + "</b> ticks.<br><b>A total of <span>" + rand + "</span> seeded random numbers have been generated,<br>and the AI for the creatures has multiplied <span>" + 44 * ai + "</span> times!</b>"
}
// Custom random number generator:
var randomId = 1000
var randomArray = new Uint32Array(1000)
function rand32() {
if (randomId === 1000) {
randomId = 0
return crypto.getRandomValues(randomArray)[randomId++] * 2.3283064365386963e-10
}
return randomArray[randomId++] * 2.3283064365386963e-10
}
function rand64() {
if (randomId === 1000 || randomId === 999) {
randomId = 0
crypto.getRandomValues(randomArray)
}
return randomArray[randomId++] * 2.3283064365386963e-10 + randomArray[randomId++] * 5.421010862427522e-20
}
function update(ticks) {
for (var time = 0; time < ticks; time++) {
var t = len
for (var i = 0; i < t; i++) {
var c = creatures[i]
var dist = 999999
var r = c.rotation
var cx = c.x + 0.014 * Math.cos(r), cy = c.y + 0.014 * Math.sin(r)
if (c.type === PREY) {
// Get the closest food:
var f = nearestFood(cx, cy, c.data.vision)
var x = f[0]
var y = f[1]
var m = f[2]
var dist = f[3]
var angle = Math.atan2(y - cy, x - cx)
var c2 = nearestCreature(cx, cy, c.data.vision, PREDATOR)
var x2 = c2[0]
var y2 = c2[1]
var m2 = c2[2]
var dist2 = c2[3]
var angle2 = Math.atan2(y2 - cy, x2 - cx)
var c3 = nearestCreature(cx, cy, c.data.vision, PREY)
var x3 = c3[0]
var y3 = c3[1]
var m3 = c3[2]
var dist3 = c3[3]
var angle3 = Math.atan2(y3 - cy, x3 - cx)
var age = c.age * 0.001
// Return special values if the angles are invalid with a NaN trick:
var result = c.layer2.calc(activate(c.layer1.calc([dist, angle, dist2, angle2, dist3, angle3, c.x, c.y, age])))
ai++
var distX = x - cx - 0.008 * Math.cos(angle)
var distY = y - cy - 0.008 * Math.sin(angle)
if (distX * distX + distY * distY < 0.00003) {
food--
foodX.splice(m, 1)
foodY.splice(m, 1)
c.reproduceTime -= 0.4
c.reproduceWait -= 5
c.energy = Math.min(c.energy + 1.2 + 0.25 * random(), 3)
}
c.reproduceTime -= 0.0008
// Why isn't this 2 times PI? Well, JS uses a negative modulo, which allows it to go from -Pi to +Pi, which...works.