added the game

Scripts/Classes/Entities/Objects/TrackPiece.gd

@@ -0,0 +1,62 @@
+class_name TrackPiece
+extends Node2D
+
+var editing := false
+
+var mouse_in_areas := 0
+
+var pieces := []
+
+var idx := 0
+
+var starting_direction := Vector2i.ZERO
+var connecting_direction := Vector2i.UP
+
+const SPRITE_COORDS := {
+	Vector2i.ZERO: Vector2(112, 16),
+	Vector2i.RIGHT: Vector2(0, 0),
+	Vector2i.LEFT: Vector2(16, 0),
+	Vector2i.DOWN: Vector2(32, 0),
+	Vector2i.UP: Vector2(48, 0),
+	Vector2i(1, 1): Vector2(64, 0),
+	Vector2i(-1, 1): Vector2(80, 0),
+	Vector2i(-1, -1): Vector2(96, 0),
+	Vector2i(1, -1): Vector2(112, 0),
+}
+
+const TRACKS = preload("uid://50hm4xgnw8ks")
+const INVISIBLE_TRACKS = preload("uid://barofu3g8jf00")
+
+func _process(_delta: float) -> void:
+	$PlacePreview.visible = editing
+	$Start.region_rect.position = SPRITE_COORDS[starting_direction]
+	$Connect.region_rect.position = SPRITE_COORDS[connecting_direction]
+	$End.visible = idx == owner.length
+	$End.frame = int(owner.end_point == 0)
+	if Input.is_action_pressed("mb_left") and editing and mouse_in_areas > 0:
+		for i in 8:
+			if is_mouse_in_area(i):
+				if Track.DIRECTIONS[i] == starting_direction:
+					owner.remove_last_piece()
+				else:
+					owner.add_piece(Track.DIRECTIONS[i])
+
+func update_direction_textures() -> void:
+	var texture = TRACKS
+	if owner.invisible:
+		texture = INVISIBLE_TRACKS
+	for i in $PlacePreview.get_children():
+		i.frame = int(Track.DIRECTIONS[i.get_index()] == starting_direction)
+	for i in [$Start, $Connect, $End]:
+		i.texture = texture
+
+func on_mouse_entered(area_idx := 0) -> void:
+	mouse_in_areas |= (1 << area_idx)
+	print(mouse_in_areas)
+
+func on_mouse_exited(area_idx := 0) -> void:
+	mouse_in_areas &= ~(1 << area_idx)
+	print(mouse_in_areas)
+
+func is_mouse_in_area(area_idx := 0) -> bool:
+	return mouse_in_areas & (1 << area_idx) != 0