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feat: init pre-defined character controller FCharacter3d
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| import * as THREE from 'three' | ||
| import { FKeyboard } from '@fibbojs/event' | ||
| import RAPIER from '@dimforge/rapier3d' | ||
| import type { FScene3d } from './FScene3d' | ||
| import { F3dShapes } from './types/F3dShapes' | ||
| import type { FComponent3dOptions, FComponent3dOptions__initCollider, FComponent3dOptions__initRigidBody } from './FComponent3d' | ||
| import { FComponent3d } from './FComponent3d' | ||
|
|
||
| /** | ||
| * @description A pre-defined character controller. | ||
| * @category Model | ||
| * @example | ||
| * ```ts | ||
| * import { FScene3d, FCharacter } from '@fibbojs/3d' | ||
| * | ||
| * const scene = new FScene3d() | ||
| * | ||
| * const capsule = new FCharacter(scene) | ||
| * scene.addComponent(capsule) | ||
| * ``` | ||
| */ | ||
| export class FCharacter3d extends FComponent3d { | ||
| /** | ||
| * The character controlelr that will be used to move the character. | ||
| */ | ||
| characterController: RAPIER.KinematicCharacterController | ||
|
|
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| constructor(scene: FScene3d, options?: FComponent3dOptions) { | ||
| super(scene, options) | ||
| // Create a capsule | ||
| const geometry = new THREE.CapsuleGeometry(0.5, 1, 32) | ||
| const material = new THREE.MeshBasicMaterial({ color: 0xA0FFA0 }) | ||
| this.mesh = new THREE.Mesh(geometry, material) | ||
|
|
||
| // Create a keyboard instance | ||
| const fKeyboard = new FKeyboard(scene) | ||
|
|
||
| // The gap the controller will leave between the character and its environment | ||
| const offset = 0.01 | ||
| // Create the character controller | ||
| this.characterController = scene.world.createCharacterController(offset) | ||
|
|
||
| // Map of the movements (will be updated by the keyboard) | ||
| const inputs = { | ||
| forward: false, | ||
| backward: false, | ||
| left: false, | ||
| right: false, | ||
| } | ||
|
|
||
| // Handle movements on each frame (gravity + character movement) | ||
| scene.onFrame((delta) => { | ||
| let worldDirection = new THREE.Vector3(0, 0, 0) | ||
| // Compute the movement direction | ||
| worldDirection.x = inputs.left ? 1 : inputs.right ? -1 : 0 | ||
| worldDirection.z = inputs.forward ? 1 : inputs.backward ? -1 : 0 | ||
| // Normalize the movement direction | ||
| worldDirection = worldDirection.normalize() | ||
| // Apply the camera direction to the movement direction | ||
| const cameraDirection = scene.camera.getCameraDirection() | ||
| worldDirection.applyAxisAngle(new THREE.Vector3(0, 1, 0), Math.atan2(cameraDirection.x, cameraDirection.z)) | ||
|
|
||
| // Create movement vector | ||
| const desiredMovement = { | ||
| x: worldDirection.x * delta * 8, | ||
| y: this.scene.world.gravity.y * delta, | ||
| z: worldDirection.z * delta * 8, | ||
| } | ||
| // Compute the desired movement | ||
| this.characterController.computeColliderMovement( | ||
| this.collider as RAPIER.Collider, | ||
| desiredMovement, | ||
| ) | ||
| // Get the corrected movement | ||
| const correctedMovement = this.characterController.computedMovement() | ||
| // Apply the movement to the rigid body | ||
| this.rigidBody?.setLinvel({ | ||
| x: correctedMovement.x / delta, | ||
| y: correctedMovement.y / delta, | ||
| z: correctedMovement.z / delta, | ||
| }, true) | ||
| }) | ||
|
|
||
| // Key down | ||
| fKeyboard.onKeyDown('ArrowUp', () => { | ||
| inputs.forward = true | ||
| }) | ||
| fKeyboard.onKeyDown('ArrowDown', () => { | ||
| inputs.backward = true | ||
| }) | ||
| fKeyboard.onKeyDown('ArrowLeft', () => { | ||
| inputs.left = true | ||
| }) | ||
| fKeyboard.onKeyDown('ArrowRight', () => { | ||
| inputs.right = true | ||
| }) | ||
|
|
||
| // Key up | ||
| fKeyboard.onKeyUp('ArrowUp', () => { | ||
| inputs.forward = false | ||
| }) | ||
| fKeyboard.onKeyUp('ArrowDown', () => { | ||
| inputs.backward = false | ||
| }) | ||
| fKeyboard.onKeyUp('ArrowLeft', () => { | ||
| inputs.left = false | ||
| }) | ||
| fKeyboard.onKeyUp('ArrowRight', () => { | ||
| inputs.right = false | ||
| }) | ||
|
|
||
| // Initialize the rigid body | ||
| this.initRigidBody() | ||
| } | ||
|
|
||
| onFrame(_delta: number): void { | ||
| super.onFrame(_delta) | ||
| } | ||
|
|
||
| initRigidBody(options?: FComponent3dOptions__initRigidBody): void { | ||
| super.initRigidBody({ | ||
| ...options, | ||
| shape: F3dShapes.CAPSULE, | ||
| rigidBodyType: RAPIER.RigidBodyType.KinematicVelocityBased, | ||
| }) | ||
| } | ||
|
|
||
| initCollider(options?: FComponent3dOptions__initCollider): void { | ||
| super.initCollider({ | ||
| ...options, | ||
| shape: F3dShapes.CAPSULE, | ||
| }) | ||
| } | ||
| } |
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