extends Node

const AIM_TEXTURE := preload("res://assets/icons/ui/aim_cursor.svg")
const HOTSPOT := Vector2(24, 24)
var player: CharacterBody2D
var aiming := false

func _ready() -> void:
	process_mode = Node.PROCESS_MODE_ALWAYS

func should_aim() -> bool:
	return is_instance_valid(player) and not bool(player.get("_is_destroyed")) and not bool(player.get("is_docked")) and not get_tree().paused and not get_viewport().gui_is_dragging() and get_viewport().gui_get_hovered_control() == null

func _process(_delta: float) -> void:
	var next := should_aim()
	if next == aiming:
		return
	aiming = next
	# A hardware cursor keeps the hotspot exactly on the weapon aim point.
	Input.set_custom_mouse_cursor(AIM_TEXTURE if aiming else null, Input.CURSOR_ARROW, HOTSPOT if aiming else Vector2.ZERO)

func _exit_tree() -> void:
	if aiming:
		Input.set_custom_mouse_cursor(null, Input.CURSOR_ARROW)