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import * as THREE from 'https://unpkg.com/three@0.126.1/build/three.module.js'
import { OrbitControls } from 'https://unpkg.com/three@0.126.1/examples/jsm/controls/OrbitControls.js'
import { CSS2DRenderer, CSS2DObject } from 'https://unpkg.com/three@0.126.1/examples/jsm/renderers/CSS2DRenderer.js'
const SCALE = 10000
const METERS_IN_AU = 149597871000
const EXPIRY = 1000 * 60 * 10
class SkirmishGrid {
scene = new THREE.Scene()
helper = new THREE.GridHelper(50, 50, 0x303030, 0x222222)
camera
controls
renderer
renderer2d
active = false
constructor({container, renderer, renderer2d}) {
this.container = container
this.renderer = renderer
this.renderer2d = renderer2d
const aspect = this.container.clientWidth / this.container.clientHeight
this.camera = new THREE.PerspectiveCamera(80, aspect, 0.1, 1000)
this.camera.position.set(8, 8, 8)
this.camera.lookAt(0, 0, 0)
this.controls = new OrbitControls(this.camera, this.renderer2d.domElement)
this.controls.minDistance = 2
this.controls.maxDistance = 30
this.controls.enableDamping = true
this.controls.dampingFactor = 0.4
this.add(this.helper)
}
add(obj) {
this.scene.add(obj)
}
draw() {
this.renderer.render(this.scene, this.camera)
this.renderer2d.render(this.scene, this.camera)
this.controls.update()
if (this.active)
requestAnimationFrame(() => this.draw())
else
this.renderer2d.domElement.innerHTML = ''
}
onresize() {
this.renderer.setSize(this.container.clientWidth, this.container.clientHeight)
this.renderer2d.setSize(this.container.clientWidth, this.container.clientHeight)
this.camera.aspect = this.container.clientWidth / this.container.clientHeight
this.camera.updateProjectionMatrix()
}
enable() {
this.active = true
this.controls.enabled = true
}
disable() {
this.active = false
this.controls.enabled = false
}
}
class Wreck {
domElement = document.createElement('div')
point = new THREE.Object3D()
killmail
constructor({killmail, grid, battle}) {
const labelElement = document.createElement('div')
const object2d = new CSS2DObject(this.domElement)
const ownerId = "alliance_id" in killmail.victim ? killmail.victim.alliance_id : killmail.victim.corporation_id
const team = battle.teams.findIndex(team => undefined !== team.find(id => id == ownerId)) == 0 ? "teamA" : "teamB"
const shipTypeId = killmail.victim.ship_type_id
const typeName = battle.ships[shipTypeId].name
const groupName = battle.ships[shipTypeId].group
this.domElement.dataset.type = typeName
this.domElement.dataset.group = groupName
labelElement.textContent = typeName
labelElement.classList.add('label')
this.killmail = killmail
this.timestamp = Date.parse(killmail.killmail_time)
this.point.position.copy(killmail.victim.position)
this.point.add(object2d)
this.domElement.classList.add('wreck', team)
this.domElement.appendChild(labelElement)
this.domElement.onclick = () => window.open(`https://zkillboard.com/kill/${this.killmail.killmail_id}/`)
this.domElement.oncontextmenu = () => {
grid.controls.target.copy(this.point.position)
grid.controls.update()
}
}
toggleKilled(timestamp) {
const timeDifference = this.timestamp - timestamp
this.domElement.classList.remove('future', 'alive', 'killed', 'expired')
if (timeDifference < -EXPIRY) {
this.domElement.classList.add('expired')
}
else if (timeDifference <= 0) {
this.domElement.classList.add('killed')
}
else if (timeDifference < EXPIRY) {
this.domElement.classList.add('alive')
}
else {
this.domElement.classList.add('future')
}
}
}
function vec3FromXYZ({x, y, z}) {
return new THREE.Vector3(x, y, z)
}
function splitKillmails(clusters, killmail) {
const vec3 = vec3FromXYZ(killmail.victim.position)
const found = clusters.find(cluster => cluster[0].victim.position.distanceTo(vec3) < 100 * SCALE)
killmail.victim.position = vec3
if (found === undefined) {
clusters.push([killmail])
}
else {
found.push(killmail)
}
return clusters
}
function averagePosition(positions) {
const sum = positions.reduce((sum, pos) => sum.add(pos), new THREE.Vector3())
return sum.divideScalar(positions.length)
}
function processBattle({battle, renderer, renderer2d, container, toolbar, skybox}) {
const clusters = battle.killmails.reduce(splitKillmails, new Array())
let elements = []
let grids = []
const gridSelection = document.getElementById("grid")
clusters.forEach(cluster => {
const option = document.createElement("option")
const origin = new THREE.Vector3()
origin.copy(cluster[0].victim.position)
origin.divideScalar(METERS_IN_AU)
option.text = `${origin.x.toFixed(1)} AU, ${origin.y.toFixed(1)} AU, ${origin.z.toFixed(1)} AU`
gridSelection.options.add(option)
const center = averagePosition(cluster.map(km => km.victim.position))
const grid = new SkirmishGrid({container, renderer, renderer2d})
cluster.forEach(killmail => {
killmail.victim.position.sub(center).divideScalar(SCALE)
const wreck = new Wreck({killmail, grid, battle})
grid.add(wreck.point)
elements.push(wreck)
})
grids.push(grid)
window.addEventListener('resize', () => grid.onresize())
})
gridSelection.oninput = () => {
grids.forEach(g => g.disable())
grids[gridSelection.selectedIndex].enable()
grids[gridSelection.selectedIndex].draw()
}
gridSelection.oninput()
skybox.then(skybox => {
const rt = new THREE.WebGLCubeRenderTarget(skybox.image.height)
rt.fromEquirectangularTexture(renderer, skybox)
grids.forEach(g => g.scene.background = rt)
})
const start = Date.parse(battle.started_at)
const end = Date.parse(battle.ended_at)
const timeline = document.getElementById("timeline")
const step = 1000
const toggleAll = () => elements.forEach(item => item.toggleKilled(timeline.value))
timeline.min = start - step
timeline.max = end + step + EXPIRY
timeline.value = timeline.min
timeline.step = step
timeline.oninput = toggleAll
toggleAll()
}
export function init({id, container, toolbar}) {
const renderer = new THREE.WebGLRenderer({antialias: true})
const renderer2d = new CSS2DRenderer()
renderer.setSize(container.clientWidth, container.clientHeight)
renderer2d.setSize(container.clientWidth, container.clientHeight)
renderer2d.domElement.style.position = 'absolute'
renderer2d.domElement.style.top = '0px'
container.appendChild(renderer.domElement)
container.appendChild(renderer2d.domElement)
const loader = new THREE.TextureLoader()
const skybox = loader.loadAsync("https://i.imgur.com/rDGOLFC.jpg") // TODO: Don't use imgur as CDN.
fetch(`/battles/${id}`)
.then(response => response.json())
.then(battle => processBattle({battle, renderer, renderer2d, container, toolbar, skybox}))
}
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