jig_piece.gd

extends StaticBody2D
class_name JigPiece

@onready var piece_image:Sprite2D = $"piece_image"

@onready var piz_top_in:Texture2D = preload("res://Assets/Masks/piz_top_in.png")
@onready var piz_top_out:Texture2D = preload("res://Assets/Masks/piz_top_out.png")
@onready var piz_top_plain:Texture2D = preload("res://Assets/Masks/piz_top_plain.png")

@onready var piz_right_in:Texture2D = preload("res://Assets/Masks/piz_right_in.png")
@onready var piz_right_out:Texture2D = preload("res://Assets/Masks/piz_right_out.png")
@onready var piz_right_plain:Texture2D = preload("res://Assets/Masks/piz_right_plain.png")

@onready var piz_bottom_in:Texture2D = preload("res://Assets/Masks/piz_bottom_in.png")
@onready var piz_bottom_out:Texture2D = preload("res://Assets/Masks/piz_bottom_out.png")
@onready var piz_bottom_plain:Texture2D = preload("res://Assets/Masks/piz_bottom_plain.png")

@onready var piz_left_in:Texture2D = preload("res://Assets/Masks/piz_left_in.png")
@onready var piz_left_out:Texture2D = preload("res://Assets/Masks/piz_left_out.png")
@onready var piz_left_plain:Texture2D = preload("res://Assets/Masks/piz_left_plain.png")

var piz_collections = []

enum Side { TOP = 0, RIGHT = 1, BOTTOM = 2, LEFT = 3 }
enum SideType { PLAIN = 0, IN = 1, OUT = 2}

var topSideType:SideType
var rightSideType:SideType
var bottomSideType:SideType
var leftSideType:SideType

var dragging = false

var start_pressed_position:Vector2
var start_pressed_distance:Vector2

# Called when the node enters the scene tree for the first time.
func _ready():
	piz_collections.append([piz_top_plain, piz_top_in, piz_top_out])
	piz_collections.append([piz_right_plain, piz_right_in, piz_right_out])
	piz_collections.append([piz_bottom_plain, piz_bottom_in, piz_bottom_out])
	piz_collections.append([piz_left_plain, piz_left_in, piz_left_out])
	
func set_side(top:SideType, right:SideType, bottom:SideType, left:SideType):
	set_side_type(Side.TOP, top)
	set_side_type(Side.RIGHT, right)
	set_side_type(Side.BOTTOM, bottom)
	set_side_type(Side.LEFT, left)
	

func set_side_type(side:JigPiece.Side, type:SideType):
	var shader_param = ""
	
	var side_index = 0
	var type_index = 0
	
	match side:
		Side.TOP:
			shader_param = "shader_parameter/MaskTop"
			side_index = 0
		Side.RIGHT:
			shader_param = "shader_parameter/MaskRight"
			side_index = 1
		Side.BOTTOM:
			shader_param = "shader_parameter/MaskBottom"
			side_index = 2
		Side.LEFT:
			shader_param = "shader_parameter/MaskLeft"
			side_index = 3
	
	match type:
		SideType.PLAIN:
			type_index = 0
		SideType.IN:
			type_index = 1
		SideType.OUT:
			type_index = 2
			
	piece_image.material.set(shader_param, piz_collections[side_index][type_index])
	
	if (side_index == 0):
		topSideType = type_index as SideType
	elif (side_index == 1):
		rightSideType = type_index as SideType
	elif (side_index == 2):
		bottomSideType = type_index as SideType
	elif (side_index == 3):
		leftSideType = type_index as SideType

func set_mat_tile(tileTexture:AtlasTexture):
	piece_image.material.set("shader_parameter/Tile", tileTexture)

func set_mat_scale(scaleX:float, scaleY:float):
	piece_image.material.set("shader_parameter/Scale", Vector2(scaleX, scaleY))

func set_mat_offset(offsetX:float, offsetY:float):
	piece_image.material.set('shader_parameter/Offset', Vector2(offsetX, offsetY))

func duplicate_material():
	piece_image.material = piece_image.material.duplicate()


func _process(delta):
	if (dragging):
		var mouse_position = get_viewport().get_mouse_position()
		self.global_position = mouse_position + start_pressed_distance

func _on_input_event(viewport, event, shape_idx):
	if event is InputEventMouseButton:
		if event.pressed:
			if !dragging:
				start_pressed_position = get_viewport().get_mouse_position()
				start_pressed_distance = self.global_position - start_pressed_position
			dragging = true
		elif !event.pressed:
			dragging = false