class_name Tool extends Node3D
## Abstract base class for spraygun types

@export var hud_accel := 50.0

var firing := false

@onready var hud_tool: Node3D = %HUDTool


func _fire() -> void:
	pass


func _idle() -> void:
	pass


## Toggles between this tool's normal & alternate modes
func switch_mode() -> void:
	# TODO: bonk if no mode switch is defined
	pass


## Called each frame that this tool is being fired.
func fire() -> void:
	firing = true
	_fire()


## Called each frame that this tool is not being fired.
func idle() -> void:
	firing = false
	_idle()


## Is this tool available to the player?
func unlocked() -> bool:
	return true


func _physics_process(delta: float) -> void:
	if hud_tool:
		var weight := 1 - exp(-hud_accel * delta)
		hud_tool.global_basis = global_basis
		hud_tool.global_position = hud_tool.global_position.lerp(global_position, weight)