webgl_geometry_minecraft

对应 three.js 示例地址。

仅需关注 init 函数的内容，其他部分都是示例小程序所使用的描述配置。

example.jstypings.d.ts

import * as THREE from "three";
import { FirstPersonControls } from "three/examples/jsm/controls/FirstPersonControls.js";
import { ImprovedNoise } from "three/examples/jsm/math/ImprovedNoise.js";
import * as BufferGeometryUtils from "three/examples/jsm/utils/BufferGeometryUtils.js";

/** @type {import("@minisheeep/mp-three-examples").OfficialExampleInfo} */
const exampleInfo = {
  name: "webgl_geometry_minecraft",
  useLoaders: [],
  needArrowControls: true,
  info: [
    [
      {
        tag: "a",
        link: "https://threejs.org",
        content: "three.js"
      },
      {
        tag: "text",
        content: "-"
      },
      {
        tag: "a",
        link: "http://www.minecraft.net/",
        content: "minecraft"
      },
      {
        tag: "text",
        content: "demo. featuring"
      },
      {
        tag: "a",
        link: "http://painterlypack.net/",
        content: "painterly pack"
      }
    ],
    [
      {
        tag: "text",
        content: "(left click: forward, right click: backward)"
      }
    ]
  ],
  init: ({ window, canvas, GUI, Stats, needToDispose, useFrame }) => {
    let stats;
    let camera, controls, scene, renderer;
    const worldWidth = 128, worldDepth = 128;
    const worldHalfWidth = worldWidth / 2;
    const worldHalfDepth = worldDepth / 2;
    const data = generateHeight(worldWidth, worldDepth);
    const clock = new THREE.Clock();
    init();
    function init() {
      camera = new THREE.PerspectiveCamera(60, window.innerWidth / window.innerHeight, 1, 2e4);
      camera.position.y = getY(worldHalfWidth, worldHalfDepth) * 100 + 100;
      scene = new THREE.Scene();
      scene.background = new THREE.Color(12571109);
      const matrix = new THREE.Matrix4();
      const pxGeometry = new THREE.PlaneGeometry(100, 100);
      pxGeometry.attributes.uv.array[1] = 0.5;
      pxGeometry.attributes.uv.array[3] = 0.5;
      pxGeometry.rotateY(Math.PI / 2);
      pxGeometry.translate(50, 0, 0);
      const nxGeometry = new THREE.PlaneGeometry(100, 100);
      nxGeometry.attributes.uv.array[1] = 0.5;
      nxGeometry.attributes.uv.array[3] = 0.5;
      nxGeometry.rotateY(-Math.PI / 2);
      nxGeometry.translate(-50, 0, 0);
      const pyGeometry = new THREE.PlaneGeometry(100, 100);
      pyGeometry.attributes.uv.array[5] = 0.5;
      pyGeometry.attributes.uv.array[7] = 0.5;
      pyGeometry.rotateX(-Math.PI / 2);
      pyGeometry.translate(0, 50, 0);
      const pzGeometry = new THREE.PlaneGeometry(100, 100);
      pzGeometry.attributes.uv.array[1] = 0.5;
      pzGeometry.attributes.uv.array[3] = 0.5;
      pzGeometry.translate(0, 0, 50);
      const nzGeometry = new THREE.PlaneGeometry(100, 100);
      nzGeometry.attributes.uv.array[1] = 0.5;
      nzGeometry.attributes.uv.array[3] = 0.5;
      nzGeometry.rotateY(Math.PI);
      nzGeometry.translate(0, 0, -50);
      const geometries = [];
      for (let z = 0; z < worldDepth; z++) {
        for (let x = 0; x < worldWidth; x++) {
          const h = getY(x, z);
          matrix.makeTranslation(
            x * 100 - worldHalfWidth * 100,
            h * 100,
            z * 100 - worldHalfDepth * 100
          );
          const px = getY(x + 1, z);
          const nx = getY(x - 1, z);
          const pz = getY(x, z + 1);
          const nz = getY(x, z - 1);
          geometries.push(pyGeometry.clone().applyMatrix4(matrix));
          if (px !== h && px !== h + 1 || x === 0) {
            geometries.push(pxGeometry.clone().applyMatrix4(matrix));
          }
          if (nx !== h && nx !== h + 1 || x === worldWidth - 1) {
            geometries.push(nxGeometry.clone().applyMatrix4(matrix));
          }
          if (pz !== h && pz !== h + 1 || z === worldDepth - 1) {
            geometries.push(pzGeometry.clone().applyMatrix4(matrix));
          }
          if (nz !== h && nz !== h + 1 || z === 0) {
            geometries.push(nzGeometry.clone().applyMatrix4(matrix));
          }
        }
      }
      const geometry = BufferGeometryUtils.mergeGeometries(geometries);
      geometry.computeBoundingSphere();
      const texture = new THREE.TextureLoader().load("textures/minecraft/atlas.png");
      texture.colorSpace = THREE.SRGBColorSpace;
      texture.magFilter = THREE.NearestFilter;
      const mesh = new THREE.Mesh(
        geometry,
        new THREE.MeshLambertMaterial({ map: texture, side: THREE.DoubleSide })
      );
      scene.add(mesh);
      const ambientLight = new THREE.AmbientLight(15658734, 3);
      scene.add(ambientLight);
      const directionalLight = new THREE.DirectionalLight(16777215, 12);
      directionalLight.position.set(1, 1, 0.5).normalize();
      scene.add(directionalLight);
      renderer = new THREE.WebGLRenderer({ antialias: true, canvas });
      renderer.setPixelRatio(window.devicePixelRatio);
      renderer.setSize(window.innerWidth, window.innerHeight);
      renderer.setAnimationLoop(animate);
      controls = new FirstPersonControls(camera, renderer.domElement);
      controls.movementSpeed = 1e3;
      controls.lookSpeed = 0.125;
      controls.lookVertical = true;
      stats = new Stats(renderer);
      window.addEventListener("resize", onWindowResize);
      needToDispose(renderer, scene, controls);
    }
    function onWindowResize() {
      camera.aspect = window.innerWidth / window.innerHeight;
      camera.updateProjectionMatrix();
      renderer.setSize(window.innerWidth, window.innerHeight);
      controls.handleResize();
    }
    function generateHeight(width, height) {
      const data2 = [], perlin = new ImprovedNoise(), size = width * height, z = Math.random() * 100;
      let quality = 2;
      for (let j = 0; j < 4; j++) {
        if (j === 0) for (let i = 0; i < size; i++) data2[i] = 0;
        for (let i = 0; i < size; i++) {
          const x = i % width, y = i / width | 0;
          data2[i] += perlin.noise(x / quality, y / quality, z) * quality;
        }
        quality *= 4;
      }
      return data2;
    }
    function getY(x, z) {
      return data[x + z * worldWidth] * 0.15 | 0;
    }
    function animate() {
      render();
      stats.update();
    }
    function render() {
      controls.update(clock.getDelta());
      renderer.render(scene, camera);
    }
  }
};
export {
  exampleInfo as default
};

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import { Loader, TypedArray } from 'three';
/**
 * 官网示例的多端使用封装把版本
 * */
export interface OfficialExampleInfo extends MiniProgramMeta {
  /*** 示例名称（保持和官网一致）*/
  name: string;
  /** main */
  init: (context: LoadContext) => void;
}

export interface LoadContext {
  //为了减少官方代码的改动，实际上等同于 canvas
  window: EventTarget & { innerWidth: number; innerHeight: number; devicePixelRatio: number };
  /** HTMLCanvasElement */
  canvas: any;
  /** https://www.npmjs.com/package/lil-gui */
  GUI: any;
  /**
   * https://www.npmjs.com/package/stats.js
   * 也可以使用其他受支持的版本
   * */
  Stats: any;
  /** 收集需要 dispose 的对象（官方示例没有处理这部分）*/
  needToDispose: (...objs: any[]) => void | ((fromFn: () => any[]) => void);

  /**基于 raq 的通用封装 */
  useFrame(animateFunc: (/** ms */ delta: number) => void): { cancel: () => void };

  /** 显示加载模态框 */
  requestLoading(text?: string): Promise<void>;

  /** 隐藏加载模态框*/
  cancelLoading(): void;

  /** 保存文件的通用封装*/
  saveFile(
    fileName: string,
    data: ArrayBuffer | TypedArray | DataView | string
  ): Promise<string | null>;

  /** 示例使用 DracoDecoder 时的资源路径 */
  DecoderPath: {
    GLTF: string;
    STANDARD: string;
  };

  /** 为资源路径拼上 CDN 前缀 */
  withCDNPrefix(path: string): string;

  /**
   * 在小程序中应使用 import { VideoTexture } from '@minisheep/three-platform-adapter/override/jsm/textures/VideoTexture.js';
   * 正常情况（web） 可直接使用 THREE.VideoTexture
   * */
  getVideoTexture(videoOptions: VideoOptions): Promise<[{ isVideoTexture: true }, video: any]>;

  /**
   * 在小程序中应使用 import { CameraTexture } from '@minisheep/three-platform-adapter/override/jsm/textures/CameraTexture.js';
   * 正常情况（web） 可参考示例 webgl_materials_video_webcam
   * */
  getCameraTexture(): { isVideoTexture: true };

  /** 用于动态修改 info 中的占位符*/
  bindInfoText(template: `$${string}$`, initValue?: string): { value: string };

  /** 分屏控件对应的事件回调 */
  onSlideStart(handle: () => void): void;
  /** 分屏控件对应的事件回调 */
  onSlideEnd(handle: () => void): void;
  /** 分屏控件对应的事件回调 */
  onSlideChange(handle: (offset: number, boxSize: number) => void): void;
}

export type VideoOptions = {
  src: string;
  /** 相当于 HTMLVideoElement 的 naturalWidth (小程序中获取不到)*/
  width: number;
  /** 相当于 HTMLVideoElement 的 naturalHeight (小程序中获取不到)*/
  height: number;
  loop?: boolean;
  autoplay?: boolean;
  muted?: boolean;
};

/** 示例小程序中使用的一些配置 */
export interface MiniProgramMeta {
  /** 用于统计加载相关信息 */
  useLoaders: Loader[];
  /** 通用 info */
  info: TagItem[][];
  /** 特殊 info */
  infoPanel?: {
    left?: [string, string][];
    right?: [string, string][];
  };
  /** 分屏控件配置 */
  needSlider?: {
    /** 方向 */
    direction?: 'horizontal' | 'vertical';
    /** 初始偏移 0-100 */
    initPosition?: number;
  };
  /** 操作摇杆控件 */
  needArrowControls?: boolean;
  /** 默认需要的画布类型 */
  canvasType?: '2d' | 'webgl' | 'webgl2';
  /** 为保持效果一致所需要的画布样式 */
  canvasStyle?: {
    bgColor?: string;
    width?: number | string;
    height?: number | string;
  };
  /** 部分示例需要在加载前进行一些提示 */
  initAfterConfirm?: {
    /**
     * 提示类型
     * @default 'default'
     * */
    type?: 'warning' | 'default';
    text: string[];
  };
}

export interface BaseTag<T extends string> {
  tag: T;
  content: string;
}

export interface ATag extends BaseTag<'a'> {
  link: string;
}

export type TextTag = BaseTag<'text'>;

export type TagItem = TextTag | ATag;

webgl_geometry_minecraft ​

webgl_geometry_minecraft