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battleground.js
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//
// Programmer Unknown's BattleGround
// Main
//
// The MIT License (MIT)
//
// Copyright (c) 2018 AppCraft LLC, http://appcraft.pro
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
// Please read documentation at https://github.com/AppCraft-LLC/pubg/wiki
// Global enums
let actions = { none: 0, move: 1, rotate: 2, turn: 3, shoot: 4, jump: 5, eat: 6, spell: 7 },
kinds = { rhino: 0, bear: 1, moose: 2, bull: 3, runchip: 4, miner: 5, sprayer: 6, splitpus: 7 },
ground = { width: 0, height: 0 },
eventTypes = { wound: 0, murder: 1, death: 2, upgrade: 3, birth: 4, spell: 5 },
objectTypes = { obstacle: 0, dynamite: 1, star: 2 },
starShapes = { levelup: 0, healing: 1, poisoned: 2, frozen: 3, death: 4 },
engineRefExt;
function pubg() {
// Load config first
let script = document.createElement('script');
script.src = `./config.js`;
script.onload = () => {
// Run the game after that
battleGround();
};
script.onerror = function () {
console.error("Error loading config.");
};
document.body.appendChild(script);
}
function battleGround() {
// Module aliases
let Engine = Matter.Engine,
Render = Matter.Render,
World = Matter.World,
Mouse = Matter.Mouse,
Events = Matter.Events,
Body = Matter.Body,
Common = Matter.Common,
MouseConstraint = Matter.MouseConstraint,
Bodies = Matter.Bodies;
// Base arrays, loop management, colors
let creatures = [],
obstacles = [],
bullets = [],
loopCounter = -1,
brains = [],
bulletsGeneratorCounter = 0,
lastActivatedBrainId = -1,
scrVer = 0,
happened = [],
summonCounter = 0,
noBulletsCounter = 0,
bulletsGeneratorFrequency = 0,
shells = { steel: 0, poisoned: 1, rubber: 2, ice: 3 },
fullLeaderboard = false,
leaderboardCounter = 0,
bulletColors = [
{ fill: "#FFF000", stroke: "#BEB320" },
{ fill: "#42FF00", stroke: "#299E00" },
{ fill: "#FF581E", stroke: "#C93400" },
{ fill: "#00AEFF", stroke: "#0093A0" }
],
specifiedAliveCreaturesCount = maxAliveCreatures,
maxObstaclesAmount = 0,
exploded = false;
// Main consts
const loopStep = 0.1,
moveForce = 0.04,
bulletForce = 15.5,
jumpForce = 0.1,
torqueForce = 0.5,
isCreature = 2,
isBullet = 3,
isObstacle = 4,
isStar = 5,
creatureRad = 30,
bulletRad = 5,
container = document.getElementById("container"),
width = container.clientWidth,
height = container.clientHeight,
widthHalf = width / 2,
heightHalf = height / 2,
dangerousBulletSpeed = 5,
maxBulletsOnGround = 20,
summonInterval = 10,
fullLeaderboardInterval = 50,
noBulletsInterval = 30,
spellAuraColor = "red",
posionedAuraColor = "green",
frozenAuraColor = "blue",
levelupAuraColor = "yellow",
untilTurnedOff = 100000;
// Create an engine
let engine = Engine.create(),
world = engine.world;
engineRefExt = engine;
// Create a renderer
let render = Render.create({
element: container,
engine: engine,
options: {
width: width,
height: height,
wireframes: false
}
});
// Prototypes
let Brain = {
id: "",
author: "",
name: "",
kind: 0,
kills: 0,
deaths: 0,
iq: 10,
alive: false,
code: null,
color: ""
}
let Creature = {
lives: creatureMaxLives[0],
energy: creatureMaxEnergy[0],
brain: null,
body: null,
bullets: 1,
level: 0,
kills: 0,
cryToTheLeft: false,
message: null,
shouted: 0, // timestamp of the last shout
invisible: false,
invulnerable: false,
poisonCounter: 0,
poisoner: false,
magnet: false,
guttapercha: false,
freezeCounter: 0,
subzero: false,
counter: 0, // spell counter
force: null
};
let Bullet = {
body: null,
shooter: null,
shell: shells.steel,
force: null
};
let Obstacle = {
body: null,
shape: 0,
sprites: 3,
firmness: 0,
condition: 0,
type: objectTypes.obstacle,
force: null
};
let Event = {
type: 0,
payload: null
};
let Aura = {
texture: null,
angle: 0,
spin: 0,
duration: 0,
counter: 0
}
function rainbow() {
let h = randomInt(0, 359),
s = randomInt(50, 99),
l = randomInt(45, 65);
return `hsl(${h},${s}%,${l}%)`;
}
// Try to load config
if (typeof cfg_sources === 'undefined') {
console.error("config.js not found.");
return;
}
if (cfg_sources.length < 3) {
console.error("At least 3 brains needed to start the game. Otherwise it won't be fun enough.");
return;
}
if (cfg_sources.length < maxAliveCreatures) {
console.error("Not enough brains for specified maxAliveCreatures const.");
return;
}
let loadedBrainsCount = 0;
setBulletGeneratorFrequency();
function setBulletGeneratorFrequency() {
bulletsGeneratorFrequency = 95 - specifiedAliveCreaturesCount * bulletsGeneratorFrequencyPerCreature
if (bulletsGeneratorFrequency < 20) bulletsGeneratorFrequency = 20;
}
function sourceLoaded() {
loadedBrainsCount++;
if (loadedBrainsCount == cfg_sources.length) assembleBrains();
}
function assembleBrains() {
let sources = shuffleBrains ? shuffleArray(cfg_sources) : cfg_sources;
for (let i = 0; i < sources.length; i++) {
let filename = sources[i],
type = filename.substr(0, filename.length - 3);
let code = Object.create(eval(type)),
brain = Object.create(Brain);
brain.id = type;
brain.author = code.author.length > 10 ? code.author.substr(0, 10) : code.author;
brain.name = code.name.length > 10 ? code.name.substr(0, 10) : code.name;
brain.kind = code.kind;
brain.code = code;
brain.color = rainbow();
let iq = localStorage.getItem(brain.id);
if (iq) brain.iq = parseInt(iq);
brains.push(brain);
};
// Start the game after loading all brains
letTheBattleBegin();
}
cfg_sources.forEach(filename => {
if (!(filename.includes("br_") && filename.includes(".js"))) {
console.error(filename, " filename has invalid format.");
return;
}
let script = document.createElement('script');
script.src = `./brains/${filename}`;
script.onload = sourceLoaded;
script.onerror = function () {
console.error("Error loading brain.");
};
document.body.appendChild(script);
});
function updateLeaderboard() {
let table = document.getElementById("leaderboard"),
rowsCount = table.rows.length - 1,
aliveCount = 0;
// Sort by IQ
let items = [];
brains.forEach(b => {
items.push({ name: `${b.name} (${b.author})`.toUpperCase(), kills: b.kills, iq: b.iq, alive: b.alive, color: b.color, deaths: b.deaths });
if (b.alive) aliveCount++;
});
items.sort(function(a, b) {
return a.iq > b.iq ? -1 : a.iq < b.iq ? 1 : 0;
});
// Remove unnecessary rows if needed
if (!fullLeaderboard && rowsCount > aliveCount) {
for (let i = 0; i < rowsCount - aliveCount; i++) table.deleteRow(table.rows.length - 1);
rowsCount = table.rows.length - 1;
}
let r = 1;
for (let i = 0; i < items.length; i++) {
if (r > 20) break;
let item = items[i],
row;
if (!item.alive && !fullLeaderboard) continue;
if (rowsCount < r) {
row = table.insertRow(r);
for (let j = 0; j < 5; j++) {
let cell = row.insertCell(j);
if (j == 2 || j == 3) cell.classList.add("right");
}
} else {
row = table.rows[r];
}
row.cells[0].innerHTML = `${i + 1}`;
row.cells[1].innerHTML = item.name;
row.cells[2].innerHTML = `${item.kills}`;
row.cells[3].innerHTML = `${item.deaths}`;
row.cells[4].innerHTML = `${item.iq}`;
if (item.alive) {
row.classList.remove("dead");
let c = item.color;
row.style.color = c;
row.style.webkitTextStroke = `0.5px ${Common.shadeColor(c, -40)}`;
} else {
row.style.color = null;
row.style.webkitTextStroke = null;
row.classList.add("dead");
}
r++;
}
}
// Give birth to a creature
function incarnateCreatureForBrain(brainId) {
if (brainId < 0 || brainId >= brains.length) return;
let creature = Object.create(Creature),
brain = brains[brainId];
creature.brain = brain;
brain.alive = true;
// Make a body
const margin = creatureRad * 2;
let body = Bodies.circle(randomInt(margin, width - margin), randomInt(margin, height - margin), creatureRad, {
restitution: 1,
frictionAir: 0.09,
collisionFilter: {
category: isCreature
},
label: creature
});
Body.setAngle(body, randomAngle());
creature.body = body;
creature.cryToTheLeft = Math.random() < 0.5;
updateCreatureEmbodiment(creature);
World.add(world, body);
creatures.push(creature);
updateLeaderboard();
// Emit birth event
let event = Object.create(Event);
event.type = eventTypes.birth;
event.payload = [obfuscateCreature(creature)];
happened.push(event);
}
function nextDeadBrainFromId(id) {
let found = -1;
if (id >= brains.length) return found;
for (let i = id; i < brains.length; i++) {
if (!brains[i].alive) {
found = i;
break;
}
}
return found;
}
function nextCreature() {
if (creatures.length >= specifiedAliveCreaturesCount) return;
let nextId = nextDeadBrainFromId(lastActivatedBrainId + 1);
if (nextId < 0) {
lastActivatedBrainId = -1;
nextId = nextDeadBrainFromId(0);
}
if (nextId < 0) {
console.error("Error loading next brain.");
return;
}
lastActivatedBrainId = nextId;
incarnateCreatureForBrain(nextId);
}
function newRandomObstacle() {
let obsType = Math.random() < dynamitesProbability ? objectTypes.dynamite : objectTypes.obstacle;
newObstacle(obsType);
}
function newObstacle(type) {
let shape = type == objectTypes.dynamite ? randomInt(0, 1) : randomInt(0, 15);
let d = 1.0,
w, h, r = 0, f = 0, // f - firmness
s = 3, // sprites, default 3
rs = 1.0,
fa = 0.09;
if (type == objectTypes.obstacle)
switch (shape) {
case 0: w = 60; h = 60; f = 50; break; // Wooden box
case 1: w = 88; h = 60; f = 70; break; // Wooden block
case 2: w = 11; h = 40; d = 0.5; fa = 0.02; s = 2; f = 15; break; // Bottle
case 3: w = 50; h = 50; d = 0.2; s = 2; f = 15; break; // Carton
case 4: w = 55; h = 55; d = 5.5; fa = 0.1; f = 90; break; // Steel box
case 5: w = 100; h = 31; f = 60; break; // Log
case 6: w = 88; h = 60; d = 20.0; fa = 0.1; f = 110; break; // Concrete block
case 7: r = 22; d = 2.0; f = 90; break; // Large gear
case 8: r = 9; d = 2.0; s = 2; f = 80; break; // Small gear
case 9: r = 25; d = 0.8; fa = 0.05; f = 30; break; // Lifebuoy
case 10: r = 40; d = 20.0; fa = 0.1; f = 160; break; // Large stone
case 11: r = 27; d = 20.0; fa = 0.1; f = 150; break; // Middle stone
case 12: r = 15; d = 20.0; fa = 0.1; f = 140; break; // Small stone
case 13: r = 15; d = 1.0; f = 100; break; // Tambourine
case 14: r = 34; d = 0.7; fa = 0.05; f = 40; break; // Large tire
case 15: r = 20; d = 0.7; fa = 0.05; f = 30; break; // Small tire
}
if (type == objectTypes.dynamite)
switch (shape) {
case 0: w = 55; h = 55; d = 5.5; fa = 0.1; f = 5; s = 1; break; // Large dynamite
case 1: w = 35; h = 35; d = 5.5; fa = 0.1; f = 5; s = 1; break; // Small dynamite
}
createObstacle(type, shape, s, f, 0, 0, w, h, r, rs, fa, d, { x: 0, y: 0 }, 0);
}
function newStar(pos, vel) {
let shape = 0,
s = 1,
f = 20,
r = 11,
rs = 1.0,
fa = 0.09,
d = 1.0,
tor = Math.random() * 2.0 - 1.0;
// Equal probability for each type of stars
shape = randomInt(0, 4);
// Death star is exception, it's probability is small
if (Math.random() < 0.1) shape = starShapes.death;
createObstacle(objectTypes.star, shape, s, f, pos.x, pos.y, 0, 0, r, rs, fa, d, vel, tor);
}
function createObstacle(type, shape, sprites, firmness, x, y, w, h, r, rs, fa, d, vel, tor) {
const margin = creatureRad * 2;
let obstacle = Object.create(Obstacle);
d *= 0.001 /* default density */;
obstacle.shape = shape;
obstacle.sprites = sprites;
obstacle.firmness = firmness;
obstacle.condition = firmness - 1;
obstacle.type = type;
if (x == 0) {
x = randomInt(margin, width - margin),
y = randomInt(margin, height - margin);
}
let body = r == 0 ? Bodies.rectangle(x, y, w, h) : Bodies.circle(x, y, r);
body.restitution = rs;
body.frictionAir = fa;
body.label = obstacle;
body.collisionFilter.category = type == objectTypes.star ? isStar : isObstacle;
Body.setDensity(body, d);
Body.setAngle(body, randomAngle());
obstacle.body = body;
World.add(world, body);
obstacles.push(obstacle);
// Set sprite
damageObstacle(obstacle, 0, null);
if (vel.x != 0) Body.setVelocity(body, vel);
if (tor != 0) Body.setAngularVelocity(body, tor);
}
function damageObstacle(obstacle, damage, attacker) {
let oldSprite = sprite(obstacle);
obstacle.condition -= damage;
// Check obstacle for crash
if (obstacle.condition <= 0) {
let type = obstacle.type,
shape = obstacle.shape,
pos = obstacle.body.position,
vel = obstacle.body.velocity;
obstacles.splice(obstacles.indexOf(obstacle), 1);
Matter.Composite.remove(world, obstacle.body);
// Explosions
if (type == objectTypes.dynamite) {
let rad = shape == 0 ? 300 : 200,
dmg = shape == 0 ? 100 : 70,
frc = shape == 0 ? 0.1 : 0.08;
// Damage creatures, objects & bullets
creatures.forEach(it => { damage(it); });
obstacles.forEach(it => { damage(it); });
bullets.forEach(it => { damage(it); });
function damage(obj) {
let dist = distanceBetweenPoints(obj.body.position, pos);
if (dist < rad) {
let eff = 1.0 - (dist / rad),
hurt = Math.round(dmg * eff),
pwr = obj.body.mass * frc * eff,
dead = false,
type = isNumber(obj.lives) ? 0 : isNumber(obj.shell) ? 1 : 2;
switch (type) {
case 0: // creature
if (!obj.invulnerable) dead = hurtCreature(obj, hurt, null, attacker);
break;
case 2: // obstacle
// Explosions don't damage stars
dead = damageObstacle(obj, obj.type == objectTypes.star ? 0 : hurt, null);
default: // bullet
break;
}
if (!dead) {
let angle = angleBetweenPoints(pos, obj.body.position),
vector = { x: Math.cos(angle) * pwr,
y: Math.sin(angle) * pwr };
// Cache force
obj.force = vector;
}
}
}
exploded = true;
}
// Stars
else if (type == objectTypes.obstacle) {
if (Math.random() < starsProbability) newStar(pos, vel);
}
return true;
}
let newSprite = sprite(obstacle);
if (newSprite != oldSprite || damage == 0 /* force reload*/ ) {
obstacle.body.render.sprite.texture = `./img/obstacles/${obstacle.type}_${obstacle.shape}_${newSprite}.png`;
}
function sprite(obs) { return Math.floor(obs.condition / obs.firmness * obs.sprites); }
return false;
}
function updateCreatureLevel(creature, force) {
let level = creature.kills >= killsToLevelUp[1] ? 2 : creature.kills >= killsToLevelUp[0] ? 1 : 0;
if (level > creature.level || force) {
if (force) level = creature.level;
creature.level = level;
creature.lives = creatureMaxLives[level];
creature.energy = creatureMaxEnergy[level];
updateCreatureEmbodiment(creature);
turnAuraOn(creature, levelupAuraColor, 120);
// Emit upgrade event
let event = Object.create(Event);
event.type = eventTypes.upgrade;
event.payload = [obfuscateCreature(creature)];
happened.push(event);
}
}
function updateCreatureEmbodiment(creature) {
let max = creatureMaxLives[creature.level],
health = Math.round(((max - creature.lives) / max) * 2.0);
creature.body.render.sprite.texture = `./img/creatures/${creature.brain.kind}_${creature.level}_${health}.png`;
}
function obfuscateCreature(c) {
if (c == null) return c;
return { id: c.body.id,
kills: c.brain.kills,
deaths: c.brain.deaths,
iq: c.brain.iq,
author: c.brain.author,
name: c.brain.name,
lives: c.lives,
bullets: c.bullets,
energy: c.energy,
level: c.level,
position: c.body.position,
velocity: c.body.velocity,
angle: c.body.angle,
speed: c.body.speed,
angularVelocity: c.body.angularVelocity,
poisoned: c.poisonCounter > 0,
spelling: c.counter > 0,
message: c.message };
}
function obfuscateBullet(b) {
if (b == null) return b;
return { id: b.body.id,
position: b.body.position,
velocity: b.body.velocity,
speed: b.body.speed,
dangerous: b.body.speed >= dangerousBulletSpeed };
}
function obfuscateObstacle(o) {
if (o == null) return o;
return { id: o.body.id,
position: o.body.position,
velocity: o.body.velocity,
speed: o.body.speed,
bounds: o.body.bounds,
type: o.type,
shape: o.shape,
condition: o.condition };
}
/**
* Calculates new IQ values for victim and killer
* @param victim Brain object of victim
* @param killer Brain object of killer
*/
function calculateIQForVictimAndKiller(victim, killer) {
safeIQDecreaseBy = function(brain, value) {
brain.iq -= value;
if (brain.iq < 0) brain.iq = 0;
}
saveToLocalStorage = function() {
localStorage.setItem(victim.id, victim.iq);
if (killer) localStorage.setItem(killer.id, killer.iq);
}
if (victim == null) return;
if (killer == null) {
safeIQDecreaseBy(victim, 3);
saveToLocalStorage();
return;
}
let killerIQ = killer.iq,
victimIQ = victim.iq;
if (killerIQ >= victimIQ) {
if (killerIQ - victimIQ > 10) {
}
else {
killer.iq++;
safeIQDecreaseBy(victim, 1);
}
}
else {
if (victimIQ - killerIQ > 10) {
let diff = victimIQ - killerIQ;
safeIQDecreaseBy(victim, Math.round(diff/5));
killer.iq += Math.round(diff/3);
}
else {
killer.iq++;
safeIQDecreaseBy(victim, 1);
}
}
saveToLocalStorage();
}
function isNumber(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
function shuffleArray(a) {
for (let i = a.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[a[i], a[j]] = [a[j], a[i]];
}
return a;
}
function changeMaxCreaturesCounterBy(value) {
specifiedAliveCreaturesCount += value;
if (specifiedAliveCreaturesCount < 3) specifiedAliveCreaturesCount = 3;
if (specifiedAliveCreaturesCount > 8) specifiedAliveCreaturesCount = 8;
setBulletGeneratorFrequency();
let count = document.getElementById("count");
if (count) count.innerHTML = `${specifiedAliveCreaturesCount}`;
}
function turnAuraOn(creature, color, duration) {
const anim = 30;
let aura = Object.create(Aura),
prevc = creature.body.render.aura ? creature.body.render.aura.counter : 0,
prevd = creature.body.render.aura ? creature.body.render.aura.duration : 0,
delta = 0;
aura.texture = `./img/effects/aura_${color}.png`;
// From ±0.01 to ±0.04
aura.spin = Math.random() * 0.06 - 0.03;
aura.spin += aura.spin > 0 ? 0.01 : -0.01;
// Continue previous aura animation if needed
if (prevc > 0) {
if (prevd - prevc < anim) delta = prevd - prevc;
else if (prevc < anim) delta = prevc;
else delta = anim;
}
aura.duration = duration + delta;
aura.counter = duration;
creature.body.render.aura = aura;
}
function turnAuraOff(creature) {
if (creature.body.render.aura) creature.body.render.aura.counter = 50;
}
// Bind interface actions
let plus = document.getElementById("plus");
if (plus) plus.onclick = function() { changeMaxCreaturesCounterBy(1); return false; }
let minus = document.getElementById("minus");
if (minus) minus.onclick = function() { changeMaxCreaturesCounterBy(-1); return false; }
// Freeze enums so brains can't change it
Object.freeze(actions);
Object.freeze(kinds);
ground = { width: width, height: height };
Object.freeze(ground);
Object.freeze(eventTypes);
Object.freeze(objectTypes);
Object.freeze(starShapes);
Object.freeze(shells);
Object.freeze(bulletColors);
// Create ground edges
const blockMrg = 200,
blockW = 1000,
blockOff = blockW / 2;
let opt = { isStatic: true };
let edgeTop = Bodies.rectangle(widthHalf, -blockOff, width + blockMrg, blockW, opt);
let edgeRight = Bodies.rectangle(width + blockOff, heightHalf, blockW, height + blockMrg, opt);
let edgeBottom = Bodies.rectangle(widthHalf, height + blockOff, width + blockMrg, blockW, opt);
let edgeLeft = Bodies.rectangle(-blockOff, heightHalf, blockW, height + blockMrg, opt);
World.add(world, [edgeTop, edgeRight, edgeBottom, edgeLeft]);
world.gravity.x = world.gravity.y = 0;
// Generate some obstacles
maxObstaclesAmount = Math.ceil(width * height / 1000 / obstaclesDensity);
for (let i = 0; i < maxObstaclesAmount; i++) newRandomObstacle();
// Drop some bullets
for (let i = 0; i < 5; i++) {
dropBullet();
}
// Add mouse constraint to enable dragging of all objects
let mouse = Mouse.create(render.canvas),
mouseConstraint = MouseConstraint.create(engine, {
mouse: mouse,
constraint: {
stiffness: 0.2,
render: {
visible: false
}
}
});
// The line above turning dragging off if needed
// mouseConstraint.collisionFilter.mask = 0;
World.add(world, mouseConstraint);
render.mouse = mouse;
// Used for debug, do nothing
Events.on(mouseConstraint, 'mousedown', function(event) {
});
// Main loop logic
Events.on(engine, 'beforeUpdate', function(event) {
if (creatures.length < 0) return;
loopCounter += loopStep;
if (loopCounter < 0) {
if (exploded) {
exploded = false;
creatures.forEach(it => { force(it); });
obstacles.forEach(it => { force(it); });
bullets.forEach(it => { force(it); });
function force(it) {
if (it.force) {
Body.applyForce(it.body, it.body.position, it.force);
it.force = null;
}
}
}
return;
}
loopCounter = -1;
if (leaderboardCounter > 0 && --leaderboardCounter < 1) {
leaderboardCounter = 0;
fullLeaderboard = false;
updateLeaderboard();
}
bulletsGeneratorCounter++;
if (bullets.length > 0) noBulletsCounter = 0;
if (++noBulletsCounter >= noBulletsInterval) {
noBulletsCounter = 0;
bulletsGeneratorCounter = bulletsGeneratorFrequency + 1;
}
if (bulletsGeneratorCounter > bulletsGeneratorFrequency && bullets.length < maxBulletsOnGround) {
bulletsGeneratorCounter = 0;
dropBullet();
}
let enemies = [],
invisibles = [],
magnets = [];
creatures.forEach(function callback(it, index, array) {
it.energy += energyRefillPerTick;
if (it.energy > creatureMaxEnergy[it.level]) it.energy = creatureMaxEnergy[it.level];
// Consider spell counters
if (it.counter > 0) {
if (--it.counter <= 0) {
it.counter == 0;
if (it.invisible) {
it.invisible = false;
it.body.render.opacity = 1;
}
if (it.invulnerable) it.invulnerable = false;
if (it.magnet) it.magnet = false;
if (it.poisoner) it.poisoner = false;
if (it.guttapercha) it.guttapercha = false;
if (it.subzero) it.subzero = false;
turnAuraOff(it);
}
}
if (it.poisonCounter > 0) {
if (--it.poisonCounter <= 0) {
it.poisonCounter = 0;
turnAuraOff(it);
}
}
if (it.freezeCounter > 0) {
if (--it.freezeCounter <= 0) {
it.freezeCounter = 0;
turnAuraOff(it);
}
}
enemies.push(obfuscateCreature(it));
if (it.invisible) invisibles.push(index);
if (it.magnet) magnets.push(index);
});
let blts = [];
bullets.forEach(it => {
blts.push(obfuscateBullet(it));
// Magnets
if (magnets.length > 0) {
magnets.forEach(i => {
let c = creatures[i],
d = distanceBetween(c.body, it.body),
f = 0.001 * (d / 500),
a = angleBetween(it.body, c.body),
v = { x: Math.cos(a) * f,
y: Math.sin(a) * f };
Body.applyForce(it.body, it.body.position, v);
});
}
});
let objs = [];
obstacles.forEach(it => {
objs.push(obfuscateObstacle(it));
});
Object.freeze(enemies);
Object.freeze(objs);
Object.freeze(blts);
let evnts = happened.slice(0);
Object.freeze(evnts);
happened = [];
creatures.forEach(function callback(it, index, array) {
// Poison
if (it.poisonCounter > 0 && it.lives > 5) {
it.lives -= poisonHurt;
updateCreatureEmbodiment(it);
}
// Freeze
if (it.freezeCounter > 0) return;
let enemiesForIt = enemies.slice(0);
if (invisibles.length > 0) {
let del = false;
for (let i = invisibles.length - 1; i >= 0; i--) {
if (invisibles[i] > index || del) enemiesForIt.splice(invisibles[i], 1);
else if (invisibles[i] == index) {
enemiesForIt.splice(index, 1);
del = true;
}
else if (invisibles[i] < index) {
enemiesForIt.splice(index, 1);
enemiesForIt.splice(invisibles[i], 1);
del = true;
}
}
if (!del) enemiesForIt.splice(index, 1);
} else enemiesForIt.splice(index, 1);
Object.freeze(enemiesForIt);
let action = it.brain.code.thinkAboutIt(enemies[index], enemiesForIt, blts, objs, evnts);
switch (action.do) {
case actions.move:
move(it, action.params.angle);
break;
case actions.rotate:
torque(it, action.params.clockwise);
break;
case actions.turn:
turnToAngle(it, action.params.angle);
break;
case actions.shoot:
shoot(it);
break;
case actions.jump:
jump(it, action.params.angle);
break;
case actions.eat:
eatBullet(it);
break;
case actions.spell:
let target, angle;
if (action.params && action.params.target && action.params.target.id) {
let tg = action.params.target.id;
for (let i = 0; i < creatures.length; i++) {
if (creatures[i].body.id == tg) {
target = creatures[i];
break;
}
}
if (!target) {
for (let i = 0; i < obstacles.length; i++) {
if (obstacles[i].body.id == tg) {
target = obstacles[i];
break;
}
}
}
}
if (action.params && action.params.angle) angle = action.params.angle;
spell(it, target, angle);
break;
default: break;
}
if (action.params && action.params.message && typeof action.params.message === 'string') {
let msg = action.params.message.trim();
if (msg.length > 0) {
it.shouted = Date.now();
it.message = msg.length > messageLineLimit * 2 ? msg.substr(0, messageLineLimit * 2) : msg;
}
}
});
// Summon new creature if needed
if (summonCounter++ > summonInterval) {
summonCounter = 0;
if (creatures.length < specifiedAliveCreaturesCount) nextCreature();
else if (obstacles.length < maxObstaclesAmount) newRandomObstacle();
}
});
// Collision detection
Events.on(engine, 'collisionStart', function(event) {
let pairs = event.pairs;
for (let i = 0; i < pairs.length; i++) {
let pair = pairs[i];
let blt, body;
if (pair.bodyA.collisionFilter.category == isCreature && pair.bodyB.collisionFilter.category == isBullet) {
blt = pair.bodyB;
body = pair.bodyA;
}
if (pair.bodyB.collisionFilter.category == isCreature && pair.bodyA.collisionFilter.category == isBullet) {
blt = pair.bodyA;
body = pair.bodyB;
}
// Creature <> bullet collision
if (blt && body && body.label && blt.label) {
let creature = body.label;
let bullet = blt.label;
if (blt.speed >= dangerousBulletSpeed && !creature.invulnerable) {
hurtCreature(creature, bulletDamage, bullet, null);
}
else {