extends CharacterBody3D

@export var speed = 5.0
@export var sprint_speed = 10.0
@export var crouch_speed = 2.0
@export var jump_velocity = 4.5
@export var mouse_sensitivity = 0.002
@export var turn_speed = 10.0

@onready var camera = $Camera3D

var gravity = ProjectSettings.get_setting("physics/3d/default_gravity")

func _ready():
	Input.mouse_mode = Input.MOUSE_MODE_CAPTURED

func _input(event):
	if event is InputEventMouseMotion:
		rotate_y(-event.relative.x * mouse_sensitivity)
		camera.rotate_x(-event.relative.y * mouse_sensitivity)
		camera.rotation.x = clamp(camera.rotation.x, -PI/2, PI/2)

func _physics_process(delta):
	if not is_on_floor():
		velocity.y -= gravity * delta

	if Input.is_action_just_pressed("jump") and is_on_floor():
		velocity.y = jump_velocity

	var input_dir = Input.get_vector("slideLeft", "slideRight", "backward", "forward")
	input_dir = -input_dir
	var direction = (camera.transform.basis * Vector3(input_dir.x, 0, input_dir.y)).normalized()

	if direction:
		var current_speed = speed
		if Input.is_action_pressed("sprint"):
			current_speed = sprint_speed
		elif Input.is_action_pressed("crouch"):
			current_speed = crouch_speed
		velocity.x = direction.x * current_speed
		velocity.z = direction.z * current_speed

		# Smoothly rotate player to face movement direction only if moving forward/backward
		if input_dir.y != 0:
			var target_angle = atan2(direction.x, direction.z)
			rotation.y = lerp_angle(rotation.y, target_angle, delta * turn_speed)
	else:
		velocity.x = move_toward(velocity.x, 0, speed)
		velocity.z = move_toward(velocity.z, 0, speed)

	move_and_slide()