three-stdlib/misc/MD2CharacterComplex.js

stand-alone library of threejs examples

import { Object3D, Box3, MathUtils, MeshLambertMaterial, TextureLoader, UVMapping } from "three";
import { MD2Loader } from "../loaders/MD2Loader.js";
import { MorphBlendMesh } from "./MorphBlendMesh.js";
class MD2CharacterComplex {
  constructor() {
    this.scale = 1;
    this.animationFPS = 6;
    this.transitionFrames = 15;
    this.maxSpeed = 275;
    this.maxReverseSpeed = -275;
    this.frontAcceleration = 600;
    this.backAcceleration = 600;
    this.frontDecceleration = 600;
    this.angularSpeed = 2.5;
    this.root = new Object3D();
    this.meshBody = null;
    this.meshWeapon = null;
    this.controls = null;
    this.skinsBody = [];
    this.skinsWeapon = [];
    this.weapons = [];
    this.currentSkin = void 0;
    this.onLoadComplete = function() {
    };
    this.meshes = [];
    this.animations = {};
    this.loadCounter = 0;
    this.speed = 0;
    this.bodyOrientation = 0;
    this.walkSpeed = this.maxSpeed;
    this.crouchSpeed = this.maxSpeed * 0.5;
    this.activeAnimation = null;
    this.oldAnimation = null;
  }
  enableShadows(enable) {
    for (let i = 0; i < this.meshes.length; i++) {
      this.meshes[i].castShadow = enable;
      this.meshes[i].receiveShadow = enable;
    }
  }
  setVisible(enable) {
    for (let i = 0; i < this.meshes.length; i++) {
      this.meshes[i].visible = enable;
      this.meshes[i].visible = enable;
    }
  }
  shareParts(original) {
    this.animations = original.animations;
    this.walkSpeed = original.walkSpeed;
    this.crouchSpeed = original.crouchSpeed;
    this.skinsBody = original.skinsBody;
    this.skinsWeapon = original.skinsWeapon;
    const mesh = this._createPart(original.meshBody.geometry, this.skinsBody[0]);
    mesh.scale.set(this.scale, this.scale, this.scale);
    this.root.position.y = original.root.position.y;
    this.root.add(mesh);
    this.meshBody = mesh;
    this.meshes.push(mesh);
    for (let i = 0; i < original.weapons.length; i++) {
      const meshWeapon = this._createPart(original.weapons[i].geometry, this.skinsWeapon[i]);
      meshWeapon.scale.set(this.scale, this.scale, this.scale);
      meshWeapon.visible = false;
      meshWeapon.name = original.weapons[i].name;
      this.root.add(meshWeapon);
      this.weapons[i] = meshWeapon;
      this.meshWeapon = meshWeapon;
      this.meshes.push(meshWeapon);
    }
  }
  loadParts(config) {
    const scope = this;
    function loadTextures(baseUrl, textureUrls) {
      const textureLoader = new TextureLoader();
      const textures = [];
      for (let i = 0; i < textureUrls.length; i++) {
        textures[i] = textureLoader.load(baseUrl + textureUrls[i], checkLoadingComplete);
        textures[i].mapping = UVMapping;
        textures[i].name = textureUrls[i];
        if ("colorSpace" in textures[i])
          textures[i].colorSpace = "srgb";
        else
          textures[i].encoding = 3001;
      }
      return textures;
    }
    function checkLoadingComplete() {
      scope.loadCounter -= 1;
      if (scope.loadCounter === 0)
        scope.onLoadComplete();
    }
    this.animations = config.animations;
    this.walkSpeed = config.walkSpeed;
    this.crouchSpeed = config.crouchSpeed;
    this.loadCounter = config.weapons.length * 2 + config.skins.length + 1;
    const weaponsTextures = [];
    for (let i = 0; i < config.weapons.length; i++)
      weaponsTextures[i] = config.weapons[i][1];
    this.skinsBody = loadTextures(config.baseUrl + "skins/", config.skins);
    this.skinsWeapon = loadTextures(config.baseUrl + "skins/", weaponsTextures);
    const loader = new MD2Loader();
    loader.load(config.baseUrl + config.body, function(geo) {
      const boundingBox = new Box3();
      boundingBox.setFromBufferAttribute(geo.attributes.position);
      scope.root.position.y = -scope.scale * boundingBox.min.y;
      const mesh = scope._createPart(geo, scope.skinsBody[0]);
      mesh.scale.set(scope.scale, scope.scale, scope.scale);
      scope.root.add(mesh);
      scope.meshBody = mesh;
      scope.meshes.push(mesh);
      checkLoadingComplete();
    });
    const generateCallback = function(index, name) {
      return function(geo) {
        const mesh = scope._createPart(geo, scope.skinsWeapon[index]);
        mesh.scale.set(scope.scale, scope.scale, scope.scale);
        mesh.visible = false;
        mesh.name = name;
        scope.root.add(mesh);
        scope.weapons[index] = mesh;
        scope.meshWeapon = mesh;
        scope.meshes.push(mesh);
        checkLoadingComplete();
      };
    };
    for (let i = 0; i < config.weapons.length; i++) {
      loader.load(config.baseUrl + config.weapons[i][0], generateCallback(i, config.weapons[i][0]));
    }
  }
  setPlaybackRate(rate) {
    if (this.meshBody)
      this.meshBody.duration = this.meshBody.baseDuration / rate;
    if (this.meshWeapon)
      this.meshWeapon.duration = this.meshWeapon.baseDuration / rate;
  }
  setWireframe(wireframeEnabled) {
    if (wireframeEnabled) {
      if (this.meshBody)
        this.meshBody.material = this.meshBody.materialWireframe;
      if (this.meshWeapon)
        this.meshWeapon.material = this.meshWeapon.materialWireframe;
    } else {
      if (this.meshBody)
        this.meshBody.material = this.meshBody.materialTexture;
      if (this.meshWeapon)
        this.meshWeapon.material = this.meshWeapon.materialTexture;
    }
  }
  setSkin(index) {
    if (this.meshBody && this.meshBody.material.wireframe === false) {
      this.meshBody.material.map = this.skinsBody[index];
      this.currentSkin = index;
    }
  }
  setWeapon(index) {
    for (let i = 0; i < this.weapons.length; i++)
      this.weapons[i].visible = false;
    const activeWeapon = this.weapons[index];
    if (activeWeapon) {
      activeWeapon.visible = true;
      this.meshWeapon = activeWeapon;
      if (this.activeAnimation) {
        activeWeapon.playAnimation(this.activeAnimation);
        this.meshWeapon.setAnimationTime(this.activeAnimation, this.meshBody.getAnimationTime(this.activeAnimation));
      }
    }
  }
  setAnimation(animationName) {
    if (animationName === this.activeAnimation || !animationName)
      return;
    if (this.meshBody) {
      this.meshBody.setAnimationWeight(animationName, 0);
      this.meshBody.playAnimation(animationName);
      this.oldAnimation = this.activeAnimation;
      this.activeAnimation = animationName;
      this.blendCounter = this.transitionFrames;
    }
    if (this.meshWeapon) {
      this.meshWeapon.setAnimationWeight(animationName, 0);
      this.meshWeapon.playAnimation(animationName);
    }
  }
  update(delta) {
    if (this.controls)
      this.updateMovementModel(delta);
    if (this.animations) {
      this.updateBehaviors();
      this.updateAnimations(delta);
    }
  }
  updateAnimations(delta) {
    let mix = 1;
    if (this.blendCounter > 0) {
      mix = (this.transitionFrames - this.blendCounter) / this.transitionFrames;
      this.blendCounter -= 1;
    }
    if (this.meshBody) {
      this.meshBody.update(delta);
      this.meshBody.setAnimationWeight(this.activeAnimation, mix);
      this.meshBody.setAnimationWeight(this.oldAnimation, 1 - mix);
    }
    if (this.meshWeapon) {
      this.meshWeapon.update(delta);
      this.meshWeapon.setAnimationWeight(this.activeAnimation, mix);
      this.meshWeapon.setAnimationWeight(this.oldAnimation, 1 - mix);
    }
  }
  updateBehaviors() {
    const controls = this.controls;
    const animations = this.animations;
    let moveAnimation, idleAnimation;
    if (controls.crouch) {
      moveAnimation = animations["crouchMove"];
      idleAnimation = animations["crouchIdle"];
    } else {
      moveAnimation = animations["move"];
      idleAnimation = animations["idle"];
    }
    if (controls.jump) {
      moveAnimation = animations["jump"];
      idleAnimation = animations["jump"];
    }
    if (controls.attack) {
      if (controls.crouch) {
        moveAnimation = animations["crouchAttack"];
        idleAnimation = animations["crouchAttack"];
      } else {
        moveAnimation = animations["attack"];
        idleAnimation = animations["attack"];
      }
    }
    if (controls.moveForward || controls.moveBackward || controls.moveLeft || controls.moveRight) {
      if (this.activeAnimation !== moveAnimation) {
        this.setAnimation(moveAnimation);
      }
    }
    if (Math.abs(this.speed) < 0.2 * this.maxSpeed && !(controls.moveLeft || controls.moveRight || controls.moveForward || controls.moveBackward)) {
      if (this.activeAnimation !== idleAnimation) {
        this.setAnimation(idleAnimation);
      }
    }
    if (controls.moveForward) {
      if (this.meshBody) {
        this.meshBody.setAnimationDirectionForward(this.activeAnimation);
        this.meshBody.setAnimationDirectionForward(this.oldAnimation);
      }
      if (this.meshWeapon) {
        this.meshWeapon.setAnimationDirectionForward(this.activeAnimation);
        this.meshWeapon.setAnimationDirectionForward(this.oldAnimation);
      }
    }
    if (controls.moveBackward) {
      if (this.meshBody) {
        this.meshBody.setAnimationDirectionBackward(this.activeAnimation);
        this.meshBody.setAnimationDirectionBackward(this.oldAnimation);
      }
      if (this.meshWeapon) {
        this.meshWeapon.setAnimationDirectionBackward(this.activeAnimation);
        this.meshWeapon.setAnimationDirectionBackward(this.oldAnimation);
      }
    }
  }
  updateMovementModel(delta) {
    function exponentialEaseOut(k) {
      return k === 1 ? 1 : -Math.pow(2, -10 * k) + 1;
    }
    const controls = this.controls;
    if (controls.crouch)
      this.maxSpeed = this.crouchSpeed;
    else
      this.maxSpeed = this.walkSpeed;
    this.maxReverseSpeed = -this.maxSpeed;
    if (controls.moveForward)
      this.speed = MathUtils.clamp(this.speed + delta * this.frontAcceleration, this.maxReverseSpeed, this.maxSpeed);
    if (controls.moveBackward)
      this.speed = MathUtils.clamp(this.speed - delta * this.backAcceleration, this.maxReverseSpeed, this.maxSpeed);
    const dir = 1;
    if (controls.moveLeft) {
      this.bodyOrientation += delta * this.angularSpeed;
      this.speed = MathUtils.clamp(
        this.speed + dir * delta * this.frontAcceleration,
        this.maxReverseSpeed,
        this.maxSpeed
      );
    }
    if (controls.moveRight) {
      this.bodyOrientation -= delta * this.angularSpeed;
      this.speed = MathUtils.clamp(
        this.speed + dir * delta * this.frontAcceleration,
        this.maxReverseSpeed,
        this.maxSpeed
      );
    }
    if (!(controls.moveForward || controls.moveBackward)) {
      if (this.speed > 0) {
        const k = exponentialEaseOut(this.speed / this.maxSpeed);
        this.speed = MathUtils.clamp(this.speed - k * delta * this.frontDecceleration, 0, this.maxSpeed);
      } else {
        const k = exponentialEaseOut(this.speed / this.maxReverseSpeed);
        this.speed = MathUtils.clamp(this.speed + k * delta * this.backAcceleration, this.maxReverseSpeed, 0);
      }
    }
    const forwardDelta = this.speed * delta;
    this.root.position.x += Math.sin(this.bodyOrientation) * forwardDelta;
    this.root.position.z += Math.cos(this.bodyOrientation) * forwardDelta;
    this.root.rotation.y = this.bodyOrientation;
  }
  // internal
  _createPart(geometry, skinMap) {
    const materialWireframe = new MeshLambertMaterial({
      color: 16755200,
      wireframe: true,
      morphTargets: true,
      morphNormals: true
    });
    const materialTexture = new MeshLambertMaterial({
      color: 16777215,
      wireframe: false,
      map: skinMap,
      morphTargets: true,
      morphNormals: true
    });
    const mesh = new MorphBlendMesh(geometry, materialTexture);
    mesh.rotation.y = -Math.PI / 2;
    mesh.materialTexture = materialTexture;
    mesh.materialWireframe = materialWireframe;
    mesh.autoCreateAnimations(this.animationFPS);
    return mesh;
  }
}
export {
  MD2CharacterComplex
};
//# sourceMappingURL=MD2CharacterComplex.js.map