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import * as THREE from "three";
import { WEBGL } from "three/examples/jsm/WebGL";
import { GLTFLoader } from "three/examples/jsm/loaders/GLTFLoader";
import { PointerLockControls } from "three/examples/jsm/controls/PointerLockControls";
import { CollisionCaster } from "./collisionCaster";
const clock: THREE.Clock = new THREE.Clock(true);
const acceleration: number = 9.8;
const speed: number = 50;
const mass: number = 100;
let controls: PointerLockControls, renderer: THREE.WebGLRenderer, camera: THREE.PerspectiveCamera, scene: THREE.Scene, raycaster: THREE.Raycaster;
let movementDirection: Map<String, boolean> = new Map<String, boolean>();
let direction = new THREE.Vector3();
let velocity = new THREE.Vector3();
let clips = [];
const initialize = () => {
renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setPixelRatio(window.devicePixelRatio);
renderer.shadowMap.type = THREE.PCFSoftShadowMap;
renderer.shadowMap.enabled = true;
document.body.appendChild(renderer.domElement);
scene = new THREE.Scene();
initializeBackground();
initializeStructures();
initializeLighting();
initializeViewer();
render();
}
const initializeBackground = () => {
const loader = new THREE.CubeTextureLoader();
const texture = loader.load([
'../assets/skybox/skyright.png',
'../assets/skybox/skyleft.png',
'../assets/skybox/skytop.png',
'../assets/skybox/skybottom.png',
'../assets/skybox/skycenter.png',
'../assets/skybox/skyveryright.png',
]);
scene.background = texture;
}
const initializeStructures = () => {
const ground: THREE.Mesh = new THREE.Mesh(new THREE.PlaneGeometry(1000, 1000, 10, 10), new THREE.MeshPhongMaterial({ depthWrite: false, visible: false }));
ground.rotation.x = - Math.PI / 2;
ground.position.set(0, 0, 0);
ground.receiveShadow = true;
clips.push(ground);
scene.add(ground);
const loader = new GLTFLoader();
loader.load("../assets/scene.glb", (data) => { scene.add(data.scene); });
}
const initializeLighting = () => {
const intensity: number = 1;
const ambientLight: THREE.AmbientLight = new THREE.AmbientLight(0xFFFFFF, intensity);
const hemilight: THREE.HemisphereLight = new THREE.HemisphereLight(0x5D6DFF, 0xD99D80, intensity);
const dirlight: THREE.DirectionalLight = new THREE.DirectionalLight(0xFFFFFF, intensity);
dirlight.position.set(5, 10, 2);
scene.add(ambientLight);
scene.add(hemilight);
scene.add(dirlight);
scene.add(dirlight.target);
}
const initializeViewer = () => {
const fov = 45;
const aspect = 1920 / 1080;
camera = new THREE.PerspectiveCamera(fov, aspect);
camera.position.set(0, 0, 0);
controls = new PointerLockControls(camera, renderer.domElement);
controls.getObject().position.set(10, 1, 0);
scene.add(controls.getObject());
}
const applyMovement = (delta: number) => {
const left = (movementDirection["a"] || movementDirection["ArrowLeft"]) ? true : false;
const right = (movementDirection["d"] || movementDirection["ArrowRight"]) ? true : false;
const forward = (movementDirection["w"] || movementDirection["ArrowUp"]) ? true : false;
const backward = (movementDirection["s"] || movementDirection["ArrowDown"]) ? true : false;
velocity.x -= velocity.x * acceleration * delta;
velocity.z -= velocity.z * acceleration * delta;
direction.z = Number(forward) - Number(backward);
direction.x = Number(right) - Number(left);
direction.normalize();
if (forward || backward) velocity.z -= direction.z * speed * delta;
if (left || right) velocity.x -= direction.x * speed * delta;
controls.moveForward(- velocity.z * delta);
controls.moveRight(- velocity.x * delta);
}
const applyPhysics = (delta) => {
const collision = new CollisionCaster(camera.position, 0.4, clips);
if (collision.down != 0) {
if (collision.down < 0.2) camera.position.setY(camera.position.y + 0.1);
} else {
camera.position.setY(camera.position.y - acceleration * delta);
}
}
const render = () => {
requestAnimationFrame(render);
const delta = clock.getDelta();
if (controls.isLocked) {
applyMovement(delta);
applyPhysics(delta);
}
renderer.render(scene, camera);
}
const changeMovement = (event: KeyboardEvent, down: boolean) => {
const exclude = ["F5", "F11", "F12", "Escape", "Control", "LeftShift", "Tab"];
if (exclude.includes(event.key)) return;
event.stopPropagation();
event.preventDefault();
movementDirection[event.key] = down;
}
const togglePointerLock = () => {
if (controls.isLocked) {
controls.unlock();
(document.querySelector("#pause") as HTMLElement).style.display = "block";
} else {
controls.lock();
(document.querySelector("#pause") as HTMLElement).style.display = "none";
}
}
const onWindowResize = () => {
renderer.setSize(window.innerWidth, window.innerHeight);
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
}
window.addEventListener("keydown", (event) => { changeMovement(event, true); }, false);
window.addEventListener("keyup", (event) => { changeMovement(event, false); }, false);
window.addEventListener("click", togglePointerLock, false);
window.addEventListener("resize", onWindowResize, false);
if (WEBGL.isWebGLAvailable()) {
initialize();
} else {
const warning = WEBGL.getWebGLErrorMessage();
document.body.appendChild(warning);
}
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