-extends Control

-class_name Piece

-

-var position: String

-var color: String

-var type: String

-

-onready var sprite = $Sprite

-onready var frame = $"%Frame"

-onready var background = $"%Background"

-onready var check = $"%Check"

-onready var anim = $AnimationPlayer

-onready var rotate = $RotatePlayer

-

-# for pawn promotion

-signal promotion_decided(promote_to)

-

-var b

-

-

-func size() -> void: # size the control

- rect_size = b.piece_size

- rect_pivot_offset = rect_size / 2

- rect_position = Chess.algebraic2vec(position) * b.piece_size

- sprite.flip_v = b.flipped

- sprite.flip_h = b.flipped

-

-

-func _ready():

- load_texture()

- background.color = b.overlay_color

-

- if type == Chess.KING:

- Events.connect("turn_over", self, "check_in_check")

-

- size()

- Events.connect("turn_over", self, "turn_over")

-

-

-func turn_over():

- if b.is_my_turn():

- background.color = b.overlay_color

- else:

- background.color = b.premove_color

-

-

-func check_in_check():

- check.visible = b.chess.__king_attacked(color)

-

-

-func _pressed(p: String) -> void:

- emit_signal("promotion_decided", p.to_lower())

-

-

-func open_promotion_previews(darken: ColorRect):

- darken.show()

- var popup = get_node_or_null("previews")

- if not popup:

- popup = PopupPanel.new()

- popup.name = "previews"

- popup.popup_exclusive = true

- popup.add_stylebox_override("panel", StyleBoxEmpty.new())

- var previews := VBoxContainer.new()

- previews.name = "previews"

- previews.add_constant_override("separation", 0)

- popup.add_child(previews)

- add_child(popup)

- for p in "QNRB":

- var newsprite := PromotionPreview.new()

- newsprite.hint_tooltip = p

- var img_path = "res://assets/pieces/%s/%s%s.png" % [Globals.piece_set, color, p]

- newsprite.texture_normal = load(img_path)

- newsprite.name = p

- newsprite.connect("pressed", self, "_pressed", [p])

- previews.add_child(newsprite)

-

- var rect = Rect2(rect_global_position, Vector2(b.piece_size.x, b.piece_size.y * 4))

- popup.popup(rect)

- yield(self, "promotion_decided")

- darken.hide()

- popup.hide()

-

-

-func load_texture(path := "res://assets/pieces/%s/%s%s.png" % [Globals.piece_set, color, type.to_upper()]) -> void:

- sprite.texture = load(path)

-

-

-func set_zindex(zindex: int, obj: CanvasItem = self) -> void: # used by the animation player

- VisualServer.canvas_item_set_z_index(obj.get_canvas_item(), zindex)

-

-

-# returns self for function chaining

-func move(to: String, synchronized := false) -> Piece:

- if synchronized:

- yield(get_tree(), "idle_frame")

-

- name = "%s-%s" % [type, to]

- b.set_piece(position, null)

- b.set_piece(to, self)

- var go_to = Chess.algebraic2vec(to)

- var signresult := int(sign(Chess.algebraic2vec(position).x - go_to.x))

-

- if signresult == 1:

- rotate.play("Right")

- elif signresult == -1:

- rotate.play("Left")

- anim.play("Move")

- position = to

- var tween = create_tween().set_trans(Tween.TRANS_BACK)

- tween.tween_property(self, @"rect_position", go_to * b.piece_size, 0.3)

- if synchronized:

- yield(tween, "finished")

- return self

-

-

-func took() -> void:

- b.set_piece(position, null)

- frame.hide()

- anim.play("Took")