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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 ESI = "https://esi.evetech.net/latest"
const SCALE = 10000
class SkirmishGrid {
scene = new THREE.Scene()
camera
controls
renderer
renderer2d
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
}
add(obj) {
this.scene.add(obj)
}
draw() {
this.renderer.render(this.scene, this.camera)
this.renderer2d.render(this.scene, this.camera)
this.controls.update()
requestAnimationFrame(() => this.draw())
}
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()
}
}
class Wreck {
domElement = document.createElement('div')
point = new THREE.Object3D()
killmail
constructor({killmail, position, icon, grid}) {
const iconElement = document.importNode(icon, true)
const object2d = new CSS2DObject(this.domElement)
this.killmail = killmail
const team = killmail.team > 1 ? "teamA" : "teamB"
this.domElement.classList.add('wreck', team)
const shipTypeId = this.killmail.victim.ship_type_id
fetch(`${ESI}/universe/types/${shipTypeId}/?datasource=tranquility`, {cache: "force-cache"})
.then(response => response.json())
.then(typeId => this.domElement.dataset.label = typeId.name)
this.domElement.appendChild(iconElement)
this.point.position.copy(position)
this.point.add(object2d)
this.domElement.onclick = () => window.open(`https://zkillboard.com/kill/${this.killmail.killmail_id}/`)
this.domElement.oncontextmenu = () => {
grid.controls.target.copy(position)
grid.controls.update()
}
}
}
function loadWreckIcon() {
return fetch("wreck.svg")
.then(response => response.text())
.then(text => {
const parser = new window.DOMParser()
const svg = parser.parseFromString(text, "image/svg+xml")
return svg.documentElement
})
}
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 processKillmails(grid, killmails, icon) {
let clusters = killmails.reduce(splitKillmails, new Array())
let center = averagePosition(clusters[0].map(km => km.victim.position))
clusters[0].sort((a, b) => a.killmail_time.localeCompare(b.killmail_time))
let elements = []
clusters[0].forEach(killmail => {
const vec3 = killmail.victim.position
vec3.sub(center)
vec3.divideScalar(SCALE)
const wreck = new Wreck({position: vec3, killmail, icon, grid})
grid.add(wreck.point)
elements.push(wreck.domElement)
})
const timeline = document.getElementById("timeline")
timeline.max = elements.length + 1
timeline.oninput = function () {
elements.slice(0, this.value).forEach(element => element.classList.add("killed"))
elements.slice(this.value, this.max).forEach(element => element.classList.remove("killed"))
}
}
function init() {
const container = document.getElementById("container")
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 grid = new SkirmishGrid({renderer, renderer2d, container})
const url = new URL(window.location.href)
let icon = loadWreckIcon()
fetch(url.searchParams.get("related") + ".json")
.then(response => response.json())
.then(killmails => {
const url = km => `${ESI}/killmails/${km.id}/${km.hash}/?datasource=tranquility`
const retrieve = km => fetch(url(km))
.then(response => response.json())
.then(data => { data.team = km.team; return data })
return Promise.all(killmails.map(retrieve))
})
.then(killmails => {
icon.then(icon => processKillmails(grid, killmails, icon))
})
const helper = new THREE.GridHelper(50, 50)
grid.add(helper)
const loader = new THREE.TextureLoader()
loader.loadAsync("https://i.imgur.com/rDGOLFC.jpg") // TODO: Don't use imgur as CDN.
.then(skybox => {
const rt = new THREE.WebGLCubeRenderTarget(skybox.image.height)
rt.fromEquirectangularTexture(renderer, skybox)
grid.scene.background = rt
});
window.addEventListener('resize', () => grid.onresize())
grid.draw()
}
init()
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