extends Camera3D

@export var sensitivity: float = 0.002
@export var smooth_speed: float = 15.0

var target_yaw: float = 0.0
var target_pitch: float = 0.0


func _ready() -> void:
	target_yaw = rotation.y
	target_pitch = rotation.x
	# Capture the mouse immediately so you don't need to click to look around
	Input.mouse_mode = Input.MOUSE_MODE_CAPTURED

func _input(event: InputEvent) -> void:
	# Allows you to hit 'Escape' to free your mouse cursor if needed
	if event.is_action_pressed("ui_cancel"):
		if Input.mouse_mode == Input.MOUSE_MODE_CAPTURED:
			Input.mouse_mode = Input.MOUSE_MODE_VISIBLE
		else:
			Input.mouse_mode = Input.MOUSE_MODE_CAPTURED

	# Always looks around when the mouse moves (as long as it's captured)
	if event is InputEventMouseMotion and Input.mouse_mode == Input.MOUSE_MODE_CAPTURED:
		target_yaw -= event.relative.x * sensitivity
		target_pitch -= event.relative.y * sensitivity
		target_pitch = clamp(target_pitch, deg_to_rad(-89), deg_to_rad(89))
		
	# Zoom implementation (Clamped safely between 10 and 75 FOV)
	if event is InputEventMouseButton:
		if Input.is_key_pressed(KEY_ALT):
			if event.button_index == MOUSE_BUTTON_WHEEL_DOWN:
				fov = clamp(fov + 5, 10, 75)
			elif event.button_index == MOUSE_BUTTON_WHEEL_UP:
				fov = clamp(fov - 5, 10, 75)

func _process(delta: float) -> void:
	
	# Smooth Rotation
	rotation.y = lerp_angle(rotation.y, target_yaw, smooth_speed * delta)
	rotation.x = lerp(rotation.x, target_pitch, smooth_speed * delta)