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import { Camera } from "../cameras/Camera";
import { Quaternion } from "../math/Quaternion";
import { Matrix3 } from "../math/Matrix3";
import { Vector3 } from "../math/Vector3";
class FPSControls {
moveSpeed: number = 1.5;
lookSpeed: number = 0.7;
dampening: number = 0.5;
update: () => void;
dispose: () => void;
constructor(camera: Camera, canvas: HTMLCanvasElement) {
const keys: { [key: string]: boolean } = {};
let pitch = camera.rotation.toEuler().x;
let yaw = camera.rotation.toEuler().y;
let targetPosition = camera.position;
let pointerLock = false;
const onMouseDown = () => {
canvas.requestPointerLock();
};
const onPointerLockChange = () => {
pointerLock = document.pointerLockElement === canvas;
if (pointerLock) {
canvas.addEventListener("mousemove", onMouseMove);
} else {
canvas.removeEventListener("mousemove", onMouseMove);
}
};
const onMouseMove = (e: MouseEvent) => {
const mouseX = e.movementX;
const mouseY = e.movementY;
yaw += mouseX * this.lookSpeed * 0.001;
pitch -= mouseY * this.lookSpeed * 0.001;
pitch = Math.max(-Math.PI / 2, Math.min(Math.PI / 2, pitch));
};
const onKeyDown = (e: KeyboardEvent) => {
keys[e.code] = true;
// Map arrow keys to WASD keys
if (e.code === "ArrowUp") keys["KeyW"] = true;
if (e.code === "ArrowDown") keys["KeyS"] = true;
if (e.code === "ArrowLeft") keys["KeyA"] = true;
if (e.code === "ArrowRight") keys["KeyD"] = true;
};
const onKeyUp = (e: KeyboardEvent) => {
keys[e.code] = false;
// Map arrow keys to WASD keys
if (e.code === "ArrowUp") keys["KeyW"] = false;
if (e.code === "ArrowDown") keys["KeyS"] = false;
if (e.code === "ArrowLeft") keys["KeyA"] = false;
if (e.code === "ArrowRight") keys["KeyD"] = false;
if (e.code === "Escape") document.exitPointerLock();
};
this.update = () => {
const R = Matrix3.RotationFromQuaternion(camera.rotation).buffer;
const forward = new Vector3(-R[2], -R[5], -R[8]);
const right = new Vector3(R[0], R[3], R[6]);
let move = new Vector3(0, 0, 0);
if (keys["KeyS"]) {
move = move.add(forward);
}
if (keys["KeyW"]) {
move = move.subtract(forward);
}
if (keys["KeyA"]) {
move = move.subtract(right);
}
if (keys["KeyD"]) {
move = move.add(right);
}
move = new Vector3(move.x, 0, move.z);
if (move.magnitude() > 0) {
move = move.normalize();
}
targetPosition = targetPosition.add(move.multiply(this.moveSpeed * 0.01));
camera.position = camera.position.add(targetPosition.subtract(camera.position).multiply(this.dampening));
camera.rotation = Quaternion.FromEuler(new Vector3(pitch, yaw, 0));
};
const preventDefault = (e: Event) => {
e.preventDefault();
e.stopPropagation();
};
this.dispose = () => {
canvas.removeEventListener("dragenter", preventDefault);
canvas.removeEventListener("dragover", preventDefault);
canvas.removeEventListener("dragleave", preventDefault);
canvas.removeEventListener("contextmenu", preventDefault);
canvas.removeEventListener("mousedown", onMouseDown);
document.removeEventListener("pointerlockchange", onPointerLockChange);
window.removeEventListener("keydown", onKeyDown);
window.removeEventListener("keyup", onKeyUp);
};
window.addEventListener("keydown", onKeyDown);
window.addEventListener("keyup", onKeyUp);
canvas.addEventListener("dragenter", preventDefault);
canvas.addEventListener("dragover", preventDefault);
canvas.addEventListener("dragleave", preventDefault);
canvas.addEventListener("contextmenu", preventDefault);
canvas.addEventListener("mousedown", onMouseDown);
document.addEventListener("pointerlockchange", onPointerLockChange);
this.update();
}
}
export { FPSControls };
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