Refactored the WHOLE project

From a simple test file, we're now on road to create a real project
Took 3 hours, but code looks nice

src/utils/addAssetsOnScene.js

@@ -0,0 +1,37 @@
+import * as THREE from 'three';
+import * as MathUtils from 'three/src/math/MathUtils.js';
+import { createGround } from '../objects/ground.js';
+import {loadModel} from './import.js';
+
+
+function alignGround(ground, MovingObject){
+    /*Function used to place an object on top of another object. In fact, this is used only to place correctly objects on the ground*/
+    const boundingBoxGround = new THREE.Box3().setFromObject(ground);
+    const boundingBoxMovingObject = new THREE.Box3().setFromObject(MovingObject);
+
+    const MovingObjectHeight = boundingBoxMovingObject.max.z - boundingBoxMovingObject.min.z;
+    MovingObject.position.y = MovingObjectHeight/2 + boundingBoxGround.max.z;
+}
+
+export async function addAssetsOnScene(scene){
+    /*This function takes the scene as arg, and is used to load everything needed on the terrain.
+    Player, trees, fences, and everything displayed on the screen is added by this function, at the right place
+    
+    Will return an object containing created objects*/
+
+    scene.add(new THREE.AmbientLight(0x404040, 50));//Light, required to see
+
+    const ground = createGround();
+    scene.add(ground);
+
+    const player = await loadModel('src/objects/models/player.gltf');//Loading player
+    player.scene.scale.set(0.2,0.2,0.2);
+    alignGround(ground, player.scene);
+    player.scene.rotateOnWorldAxis(new THREE.Vector3(1,0,0), MathUtils.degToRad(90));//Must be standing up
+    scene.add( player.scene );
+	
+    return {
+        ground: ground,
+        player: player,
+    };
+}

src/utils/animateMesh.js

@@ -0,0 +1,28 @@
+import * as THREE from 'three';
+
+const ANIMATION_SPEED_MULTIPLIER = 1.4;
+let mixersToUpdateEachFrame = [];
+
+export function addAnimationMixerOnMesh(mesh, actions){
+    //See https://threejs.org/docs/#manual/en/introduction/Animation-system
+    /*Function used to add an animationMixer on a mesh, so we can easily start or stop animations
+      Takes the animated mesh, and a list of actions names that should become animated */
+
+    const mixer = new THREE.AnimationMixer(mesh.scene);//We create a new mixer to manage every animations on this mesh
+
+    mesh.animationMixer = mixer;//We add this mixer on the mesh
+    mesh.animationActions = {};//And create an object that will hold actions
+    
+    actions.forEach(element => {
+        const clip = THREE.AnimationClip.findByName( mesh.animations, element );//For each given action name, we get a clip
+        mesh.animationActions[element] = mixer.clipAction(clip);//and save it as an action
+    });
+
+    mixersToUpdateEachFrame.push(mixer);
+}
+
+export function updateAnimations(deltaSeconds){
+    mixersToUpdateEachFrame.forEach(element => {
+        element.update(deltaSeconds * ANIMATION_SPEED_MULTIPLIER);
+    });
+};

src/utils/import.js

@@ -0,0 +1,18 @@
+import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
+
+const loader = new GLTFLoader();
+
+export function loadModel(path) {
+  return new Promise((resolve, reject) => {
+    loader.load(
+      path,
+      (gltf) => {
+        resolve(gltf);
+      },
+      undefined,
+      (error) => {
+        reject(error);
+      }
+    );
+  });
+}

src/utils/placement.js

@@ -1,9 +0,0 @@
-import * as THREE from 'three';
-
-export function alignGround(ground, MovingObject){
-    const boundingBoxGround = new THREE.Box3().setFromObject(ground);
-    const boundingBoxMovingObject = new THREE.Box3().setFromObject(MovingObject);
-
-    const MovingObjectHeight = boundingBoxMovingObject.max.z - boundingBoxMovingObject.min.z;
-    MovingObject.position.y = MovingObjectHeight/2 + boundingBoxGround.max.z;
-}

src/utils/playerMovement.js

@@ -0,0 +1,69 @@
+import * as THREE from 'three';
+import * as MathUtils from 'three/src/math/MathUtils.js';
+
+const PLAYER_SPEED = 0.015;
+const ROTATION_SPEED = 0.05; // Vitesse de rotation
+const playerDirection = new THREE.Vector3(0, 0, 0);
+const playerRotation = new THREE.Quaternion();
+
+//Managing keys
+export function handleKeyDown(event) {
+    switch (event.code) {
+      case 'ArrowUp':
+      case 'KeyW':
+        playerDirection.y = 1; // Up
+        break;
+      case 'ArrowDown':
+      case 'KeyS':
+        playerDirection.y = -1; // Back
+        break;
+      case 'ArrowLeft':
+      case 'KeyA':
+        playerDirection.x = -1; // Left
+        break;
+      case 'ArrowRight':
+      case 'KeyD':
+        playerDirection.x = 1; // Right
+        break;
+    }
+  }
+  
+  export function handleKeyUp(event) {
+    switch (event.code) {
+      case 'ArrowUp':
+      case 'KeyW':
+      case 'ArrowDown':
+      case 'KeyS':
+        playerDirection.y = 0; // Arrêter le mouvement vertical
+        break;
+      case 'ArrowLeft':
+      case 'KeyA':
+      case 'ArrowRight':
+      case 'KeyD':
+        playerDirection.x = 0; // Arrêter le mouvement horizontal
+        break;
+    }
+  }
+
+  export function updatePlayerPositionAnimation(player, camera) {
+    /* Function called in the main loop
+        Used to calculate the position and orientation of the player
+        Also used to start and stop walking animation */
+    const delta = playerDirection.clone().multiplyScalar(PLAYER_SPEED);
+    player.scene.position.add(delta);
+    camera.position.add(delta);//The camera must follow the player
+
+    if (playerDirection.length() > 0) {//If a movement key is pressed ( or something in playerDirection )
+        if(!player.animationActions.Walk.isRunning()) player.animationActions.Walk.play();//Playing walk animation
+
+        const angle = Math.atan2(playerDirection.x, -playerDirection.y);//Get the angle between center (0;0) and the coordinates, which are directly provided by the pressed keys
+        const targetRotation = new THREE.Quaternion();
+        
+        targetRotation.setFromAxisAngle(new THREE.Vector3(0, 1, 0), angle);
+        playerRotation.slerp(targetRotation, ROTATION_SPEED);//Slowly moving from playerRotation to targetRotation
+        player.scene.setRotationFromQuaternion(playerRotation);
+        player.scene.rotateOnWorldAxis(new THREE.Vector3(1, 0, 0), MathUtils.degToRad(90));//Used to force the player to be standing up instead of sleeping
+    }else{
+        if(player.animationActions.Walk.isRunning()) player.animationActions.Walk.stop();//Not walking, we can stop this animation
+    }
+  }