438 lines
13 KiB
TypeScript
438 lines
13 KiB
TypeScript
import { Vector3 } from "three";
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import type { Vec3 } from "../core/vector";
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import {
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FIRST_PERSON_PLAYER_SHAPE,
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cloneFirstPersonPlayerShape,
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getFirstPersonPlayerEyeHeight
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} from "./player-collision";
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import {
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resolvePlayerStartActionInputs,
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resolvePlayerStartLookInput,
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} from "./player-input-bindings";
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import {
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createIdleRuntimeLocomotionState,
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stepPlayerLocomotion
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} from "./player-locomotion";
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import type {
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NavigationController,
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NavigationControllerDeactivateOptions,
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RuntimeControllerContext,
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RuntimeLocomotionState
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} from "./navigation-controller";
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import type { RuntimePlayerMovement } from "./runtime-scene-build";
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const LOOK_SENSITIVITY = 0.008;
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const GAMEPAD_LOOK_SPEED = 2.8;
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const DEFAULT_CAMERA_DISTANCE = 4.5;
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const MIN_CAMERA_DISTANCE = 1.5;
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const MAX_CAMERA_DISTANCE = 7;
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const DEFAULT_PITCH_RADIANS = 0.35;
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const MIN_PITCH_RADIANS = -0.2;
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const MAX_PITCH_RADIANS = Math.PI * 0.45;
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const CAMERA_COLLISION_RADIUS = 0.2;
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const CAMERA_PIVOT_EYE_HEIGHT_FACTOR = 0.85;
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function clampPitch(pitchRadians: number): number {
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return Math.max(
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MIN_PITCH_RADIANS,
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Math.min(MAX_PITCH_RADIANS, pitchRadians)
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);
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}
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function clampCameraDistance(distance: number): number {
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return Math.max(
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MIN_CAMERA_DISTANCE,
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Math.min(MAX_CAMERA_DISTANCE, distance)
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);
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}
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function toEyePosition(feetPosition: Vec3, eyeHeight: number): Vec3 {
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return {
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x: feetPosition.x,
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y: feetPosition.y + eyeHeight,
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z: feetPosition.z
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};
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}
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function cloneRuntimePlayerMovement(
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movement: RuntimePlayerMovement
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): RuntimePlayerMovement {
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return {
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templateKind: movement.templateKind,
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moveSpeed: movement.moveSpeed,
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capabilities: {
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jump: movement.capabilities.jump,
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sprint: movement.capabilities.sprint,
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crouch: movement.capabilities.crouch
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}
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};
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}
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export class ThirdPersonNavigationController implements NavigationController {
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readonly id = "thirdPerson" as const;
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private context: RuntimeControllerContext | null = null;
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private readonly pressedKeys = new Set<string>();
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private readonly lookAtVector = new Vector3();
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private feetPosition = {
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x: 0,
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y: 0,
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z: 0
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};
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private standingPlayerShape = cloneFirstPersonPlayerShape(
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FIRST_PERSON_PLAYER_SHAPE
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);
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private activePlayerShape = cloneFirstPersonPlayerShape(
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FIRST_PERSON_PLAYER_SHAPE
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);
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private yawRadians = 0;
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private cameraYawRadians = 0;
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private pitchRadians = DEFAULT_PITCH_RADIANS;
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private cameraDistance = DEFAULT_CAMERA_DISTANCE;
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private verticalVelocity = 0;
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private grounded = false;
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private jumpPressed = false;
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private locomotionState: RuntimeLocomotionState =
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createIdleRuntimeLocomotionState("flying");
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private inWaterVolume = false;
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private inFogVolume = false;
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private dragging = false;
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private lastPointerClientX = 0;
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private lastPointerClientY = 0;
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private initializedFromSpawn = false;
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activate(ctx: RuntimeControllerContext): void {
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this.context = ctx;
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if (!this.initializedFromSpawn) {
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const runtimeScene = ctx.getRuntimeScene();
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const spawn = runtimeScene.spawn;
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this.feetPosition = {
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...spawn.position
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};
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this.standingPlayerShape = cloneFirstPersonPlayerShape(
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runtimeScene.playerCollider
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);
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this.activePlayerShape = cloneFirstPersonPlayerShape(
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runtimeScene.playerCollider
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);
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this.yawRadians = (spawn.yawDegrees * Math.PI) / 180;
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this.cameraYawRadians = this.yawRadians;
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this.pitchRadians = DEFAULT_PITCH_RADIANS;
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this.cameraDistance = DEFAULT_CAMERA_DISTANCE;
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this.verticalVelocity = 0;
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this.grounded = false;
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this.jumpPressed = false;
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this.locomotionState = createIdleRuntimeLocomotionState(
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runtimeScene.playerCollider.mode === "none" ? "flying" : "airborne"
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);
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this.inWaterVolume = false;
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this.inFogVolume = false;
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this.initializedFromSpawn = true;
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}
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window.addEventListener("keydown", this.handleKeyDown);
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window.addEventListener("keyup", this.handleKeyUp);
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window.addEventListener("blur", this.handleBlur);
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ctx.domElement.addEventListener("pointerdown", this.handlePointerDown);
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ctx.domElement.addEventListener("wheel", this.handleWheel, {
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passive: false
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});
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ctx.domElement.addEventListener("contextmenu", this.handleContextMenu);
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window.addEventListener("pointermove", this.handlePointerMove);
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window.addEventListener("pointerup", this.handlePointerUp);
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ctx.setRuntimeMessage(
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"Third Person active. Drag to orbit the camera, use the right stick for gamepad camera look, move with your authored bindings, and scroll to zoom."
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);
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this.updateCameraTransform();
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this.publishTelemetry();
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}
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deactivate(
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ctx: RuntimeControllerContext,
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_options: NavigationControllerDeactivateOptions = {}
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): void {
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void _options;
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window.removeEventListener("keydown", this.handleKeyDown);
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window.removeEventListener("keyup", this.handleKeyUp);
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window.removeEventListener("blur", this.handleBlur);
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ctx.domElement.removeEventListener("pointerdown", this.handlePointerDown);
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ctx.domElement.removeEventListener("wheel", this.handleWheel);
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ctx.domElement.removeEventListener("contextmenu", this.handleContextMenu);
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window.removeEventListener("pointermove", this.handlePointerMove);
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window.removeEventListener("pointerup", this.handlePointerUp);
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this.pressedKeys.clear();
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this.dragging = false;
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this.jumpPressed = false;
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ctx.setRuntimeMessage(null);
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ctx.setFirstPersonTelemetry(null);
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this.context = null;
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}
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resetSceneState(): void {
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this.pressedKeys.clear();
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this.feetPosition = {
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x: 0,
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y: 0,
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z: 0
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};
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this.yawRadians = 0;
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this.cameraYawRadians = 0;
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this.pitchRadians = DEFAULT_PITCH_RADIANS;
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this.cameraDistance = DEFAULT_CAMERA_DISTANCE;
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this.verticalVelocity = 0;
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this.grounded = false;
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this.jumpPressed = false;
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this.standingPlayerShape = cloneFirstPersonPlayerShape(
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FIRST_PERSON_PLAYER_SHAPE
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);
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this.activePlayerShape = cloneFirstPersonPlayerShape(
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FIRST_PERSON_PLAYER_SHAPE
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);
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this.locomotionState = createIdleRuntimeLocomotionState("flying");
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this.inWaterVolume = false;
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this.inFogVolume = false;
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this.dragging = false;
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this.lastPointerClientX = 0;
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this.lastPointerClientY = 0;
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this.initializedFromSpawn = false;
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}
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update(dt: number): void {
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if (this.context === null) {
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return;
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}
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const runtimeScene = this.context.getRuntimeScene();
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this.standingPlayerShape = cloneFirstPersonPlayerShape(
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runtimeScene.playerCollider
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);
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const playerMovement = runtimeScene.playerMovement;
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const lookInput = resolvePlayerStartLookInput(
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runtimeScene.playerInputBindings
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);
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const inputState = resolvePlayerStartActionInputs(
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this.pressedKeys,
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runtimeScene.playerInputBindings
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);
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if (lookInput.horizontal !== 0 || lookInput.vertical !== 0) {
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this.cameraYawRadians -= lookInput.horizontal * GAMEPAD_LOOK_SPEED * dt;
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this.pitchRadians = clampPitch(
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this.pitchRadians - lookInput.vertical * GAMEPAD_LOOK_SPEED * dt
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);
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}
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const locomotionStep = stepPlayerLocomotion(
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{
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dt,
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feetPosition: this.feetPosition,
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movementYawRadians: this.cameraYawRadians,
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activeShape: this.activePlayerShape,
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standingShape: this.standingPlayerShape,
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verticalVelocity: this.verticalVelocity,
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crouched: this.locomotionState.crouched,
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wasJumpPressed: this.jumpPressed,
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input: inputState,
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movement: playerMovement,
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resolveMotion: (feetPosition, motion, shape) =>
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this.context?.resolveFirstPersonMotion(feetPosition, motion, shape) ??
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null,
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resolveVolumeState: (feetPosition) =>
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this.context?.resolvePlayerVolumeState(feetPosition) ?? {
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inWater: false,
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inFog: false
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},
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probeGround: (feetPosition, shape, maxDistance) =>
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this.context?.probePlayerGround?.(feetPosition, shape, maxDistance) ?? {
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grounded: false,
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distance: null,
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normal: null,
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slopeDegrees: null
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},
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canOccupyShape: (feetPosition, shape) =>
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this.context?.canOccupyPlayerShape?.(feetPosition, shape) ?? true
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}
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);
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if (locomotionStep === null) {
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this.updateCameraTransform();
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this.publishTelemetry();
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return;
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}
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this.feetPosition = locomotionStep.feetPosition;
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this.activePlayerShape = locomotionStep.activeShape;
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this.verticalVelocity = locomotionStep.verticalVelocity;
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this.jumpPressed = locomotionStep.jumpPressed;
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this.locomotionState = locomotionStep.locomotionState;
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this.grounded = locomotionStep.locomotionState.grounded;
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this.inWaterVolume = locomotionStep.inWaterVolume;
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this.inFogVolume = locomotionStep.inFogVolume;
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if (
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Math.hypot(
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locomotionStep.planarDisplacement.x,
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locomotionStep.planarDisplacement.z
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) > 1e-5
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) {
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this.yawRadians = Math.atan2(
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locomotionStep.planarDisplacement.x,
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locomotionStep.planarDisplacement.z
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);
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}
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this.updateCameraTransform();
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this.publishTelemetry();
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}
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teleportTo(feetPosition: Vec3, yawDegrees: number) {
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this.feetPosition = {
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...feetPosition
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};
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this.yawRadians = (yawDegrees * Math.PI) / 180;
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this.cameraYawRadians = this.yawRadians;
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this.pitchRadians = DEFAULT_PITCH_RADIANS;
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this.verticalVelocity = 0;
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this.grounded = false;
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this.jumpPressed = false;
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this.activePlayerShape = cloneFirstPersonPlayerShape(
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this.context?.getRuntimeScene().playerCollider ?? FIRST_PERSON_PLAYER_SHAPE
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);
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this.standingPlayerShape = cloneFirstPersonPlayerShape(
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this.context?.getRuntimeScene().playerCollider ?? FIRST_PERSON_PLAYER_SHAPE
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);
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this.locomotionState = createIdleRuntimeLocomotionState(
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this.activePlayerShape.mode === "none" ? "flying" : "airborne"
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);
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this.inWaterVolume = false;
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this.inFogVolume = false;
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this.updateCameraTransform();
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this.publishTelemetry();
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}
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private updateCameraTransform() {
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if (this.context === null) {
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return;
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}
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const eyeHeight = getFirstPersonPlayerEyeHeight(this.activePlayerShape);
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const pivot = {
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x: this.feetPosition.x,
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y: this.feetPosition.y + eyeHeight * CAMERA_PIVOT_EYE_HEIGHT_FACTOR,
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z: this.feetPosition.z
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};
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const horizontalDistance =
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Math.cos(this.pitchRadians) * this.cameraDistance;
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const desiredCameraPosition = {
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x: pivot.x - Math.sin(this.cameraYawRadians) * horizontalDistance,
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y: pivot.y + Math.sin(this.pitchRadians) * this.cameraDistance,
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z: pivot.z - Math.cos(this.cameraYawRadians) * horizontalDistance
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};
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const resolvedCameraPosition =
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this.context.resolveThirdPersonCameraCollision(
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pivot,
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desiredCameraPosition,
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CAMERA_COLLISION_RADIUS
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);
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this.context.camera.position.set(
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resolvedCameraPosition.x,
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resolvedCameraPosition.y,
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resolvedCameraPosition.z
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);
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this.lookAtVector.set(pivot.x, pivot.y, pivot.z);
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this.context.camera.lookAt(this.lookAtVector);
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}
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private publishTelemetry() {
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if (this.context === null) {
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return;
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}
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const eyePosition = toEyePosition(
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this.feetPosition,
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getFirstPersonPlayerEyeHeight(this.activePlayerShape)
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);
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const cameraVolumeState = this.context.resolvePlayerVolumeState({
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x: this.context.camera.position.x,
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y: this.context.camera.position.y,
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z: this.context.camera.position.z
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});
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this.context.setFirstPersonTelemetry({
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feetPosition: {
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...this.feetPosition
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},
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eyePosition,
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grounded: this.grounded,
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locomotionState: this.locomotionState,
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movement: cloneRuntimePlayerMovement(
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this.context.getRuntimeScene().playerMovement
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),
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inWaterVolume: this.inWaterVolume,
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cameraSubmerged: cameraVolumeState.inWater,
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inFogVolume: this.inFogVolume,
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pointerLocked: false,
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spawn: this.context.getRuntimeScene().spawn
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});
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}
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private handleKeyDown = (event: KeyboardEvent) => {
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this.pressedKeys.add(event.code);
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};
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private handleKeyUp = (event: KeyboardEvent) => {
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this.pressedKeys.delete(event.code);
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};
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private handleBlur = () => {
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this.pressedKeys.clear();
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this.dragging = false;
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};
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private handlePointerDown = (event: PointerEvent) => {
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if (event.button !== 0) {
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return;
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}
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this.dragging = true;
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this.lastPointerClientX = event.clientX;
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this.lastPointerClientY = event.clientY;
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};
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private handlePointerMove = (event: PointerEvent) => {
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if (!this.dragging) {
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return;
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}
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const deltaX = event.clientX - this.lastPointerClientX;
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const deltaY = event.clientY - this.lastPointerClientY;
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this.lastPointerClientX = event.clientX;
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this.lastPointerClientY = event.clientY;
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this.cameraYawRadians -= deltaX * LOOK_SENSITIVITY;
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this.pitchRadians = clampPitch(
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this.pitchRadians + deltaY * LOOK_SENSITIVITY
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);
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};
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private handlePointerUp = () => {
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this.dragging = false;
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};
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private handleWheel = (event: WheelEvent) => {
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event.preventDefault();
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this.cameraDistance = clampCameraDistance(
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this.cameraDistance + event.deltaY * 0.01
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);
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};
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private handleContextMenu = (event: MouseEvent) => {
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event.preventDefault();
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};
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}
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