MenuHandler.gd

extends Node2D
class_name MainMenuHandler

enum Transitions {
    INTERPOLATE,
    FADE_TO
}

const DEFAULT_ANIM_DURATION: float = 0.5


@export var menu_defs: Array[MenuDefinition]


var menu_active: MenuDefinition

var running_tweens: Array[Tween]


func get_view_quadrant(quadrant: Vector2i = Vector2i.ZERO) -> Vector2:
    var output: Vector2 = Vector2(
        get_viewport_rect().size.x * quadrant.x - 1,
        get_viewport_rect().size.y * quadrant.y - 1
    )
    return output

func change_to_menu(menu: MenuDefinition):
    get_viewport().gui_release_focus()
    for tween: Tween in running_tweens:
        if is_instance_valid(tween):
            tween.kill()


    match menu.transition:
        Transitions.INTERPOLATE:
            anim_interpolate_view(menu.position)

        Transitions.FADE_TO:
            anim_fade_move_view(menu.position)

    menu_active = menu


func anim_interpolate_view(to: Vector2, duration: float = DEFAULT_ANIM_DURATION):
    var tween: Tween = create_tween()
    tween.tween_property(get_viewport(), "canvas_transform:origin", to, duration)

func anim_fade_move_view(to: Vector2, duration: float = DEFAULT_ANIM_DURATION):
    var color_rect : = ColorRect.new()

class MenuDefinition extends Node2D:
    var main_node: Node
    var view_pos: Vector2
    var anim_duration: float = DEFAULT_ANIM_DURATION
    var transition: Transitions

    func _init(_main_node: Node):
        main_node