[gd_scene load_steps=2 format=3 uid="uid://bqsq3ww35ngrr"]

[sub_resource type="GDScript" id="GDScript_mic37"]
script/source = "extends Control

func _ready():
	$Timer.paused = true
	restart()


var problem: WFCSudokuProblem
var solver: WFCSolver


func restart():
	var width: int = int((get_node('%WidthSlider') as Slider).value)
	var height: int = int((get_node('%HeightSlider') as Slider).value)
	var cells_container: GridContainer = get_node('%CellsContainer') as GridContainer

	for c in cells_container.get_children():
		c.queue_free()

	for i in range(width * height):
		var label: Label = Label.new()
		label.text = '?'
		label.custom_minimum_size = Vector2(20, 0)
		label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
		cells_container.add_child(label)

	cells_container.columns = width

	problem = WFCSudokuProblem.new(
		width, height,
		max(width, height)
	)
	solver = WFCSolver.new(problem)

	last_known_values.clear()

	(get_node('%SizeLabel') as Label).text = '%dx%d, %d numbers' % \\
		[problem.width, problem.height, problem.numbers]

	$Timer.paused = true

	call_deferred(\"render_solver_state\")

var last_known_values: PackedInt64Array

func render_solver_state():
	var state: WFCSolverState = solver.current_state
	var cells_container: GridContainer = get_node('%CellsContainer') as GridContainer

	for i in range(problem.width * problem.height):
		var label: Label = (cells_container.get_child(i) as Label)

		if state == null:
			label.text = '!'
			label.modulate = Color.WHITE
		else:
			var solution: int = state.cell_solution_or_entropy[i]
			if solution == WFCSolverState.CELL_SOLUTION_FAILED:
				label.text = '-'
			elif solution < 0:
				label.text = '?'
			else:
				label.text = '1234567890ABCDEFGHIJKLMNOPQRSTUVVXYZ'[solution]

			if solution < 0:
				label.modulate = Color.WEB_GRAY
			elif last_known_values.size() == 0:
				label.modulate = Color.WHITE
			elif last_known_values[i] != solution:
				label.modulate = Color.RED
			else:
				label.modulate = label.modulate.lerp(Color.WHITE, 0.02)

	if state != null:
		last_known_values = state.cell_solution_or_entropy.duplicate()
	else:
		last_known_values.clear()

	var can_not_solve: bool = state == null or state.is_all_solved()
	var timer_running: bool = not $Timer.paused

	(get_node('%StepButton') as Button).disabled = can_not_solve or timer_running
	(get_node('%AutoSolve') as Button).disabled = can_not_solve or timer_running
	(get_node('%InstantSolve') as Button).disabled = can_not_solve or timer_running
	(get_node('%PauseButton') as Button).disabled = not timer_running


func _on_step_button_pressed():
	solver.solve_step()

	render_solver_state()


func _on_reset_button_pressed():
	restart()


func _on_width_slider_value_changed(_value):
	restart()


func _on_height_slider_value_changed(_value):
	restart()


func _on_timer_timeout():
	if solver.current_state == null or solver.current_state.is_all_solved():
		$Timer.paused = true
	else:
		solver.solve_step()

	render_solver_state()


func _on_auto_solve_pressed():
	$Timer.paused = false


func _on_instant_solve_pressed():
	solver.solve()
	render_solver_state()


func _on_pause_button_pressed():
	$Timer.paused = true
	render_solver_state()
"

[node name="sudoku_demo" type="Control"]
layout_mode = 3
anchors_preset = 15
anchor_right = 1.0
anchor_bottom = 1.0
grow_horizontal = 2
grow_vertical = 2
script = SubResource("GDScript_mic37")

[node name="VBoxContainer" type="VBoxContainer" parent="."]
layout_mode = 1
anchors_preset = 15
anchor_right = 1.0
anchor_bottom = 1.0
grow_horizontal = 2
grow_vertical = 2

[node name="HBoxContainer" type="HBoxContainer" parent="VBoxContainer"]
layout_mode = 2
size_flags_horizontal = 4

[node name="WidthSlider" type="HSlider" parent="VBoxContainer/HBoxContainer"]
unique_name_in_owner = true
custom_minimum_size = Vector2(200, 0)
layout_mode = 2
size_flags_horizontal = 3
min_value = 1.0
max_value = 36.0
value = 9.0
rounded = true
tick_count = 36

[node name="HeightSlider" type="HSlider" parent="VBoxContainer/HBoxContainer"]
unique_name_in_owner = true
custom_minimum_size = Vector2(200, 0)
layout_mode = 2
size_flags_horizontal = 3
min_value = 1.0
max_value = 36.0
value = 9.0
rounded = true
tick_count = 36

[node name="SizeLabel" type="Label" parent="VBoxContainer"]
unique_name_in_owner = true
layout_mode = 2
text = "100500x34234243"
horizontal_alignment = 1

[node name="CellsContainer" type="GridContainer" parent="VBoxContainer"]
unique_name_in_owner = true
layout_mode = 2
size_flags_horizontal = 4
size_flags_vertical = 4
columns = 4

[node name="Label" type="Label" parent="VBoxContainer/CellsContainer"]
custom_minimum_size = Vector2(20, 0)
layout_mode = 2
text = "X"
horizontal_alignment = 1

[node name="Label2" type="Label" parent="VBoxContainer/CellsContainer"]
layout_mode = 2
text = "X"

[node name="Label3" type="Label" parent="VBoxContainer/CellsContainer"]
layout_mode = 2
text = "X"

[node name="Label4" type="Label" parent="VBoxContainer/CellsContainer"]
layout_mode = 2
text = "X"

[node name="Label5" type="Label" parent="VBoxContainer/CellsContainer"]
layout_mode = 2
text = "X"

[node name="Label6" type="Label" parent="VBoxContainer/CellsContainer"]
layout_mode = 2
text = "X"

[node name="Label7" type="Label" parent="VBoxContainer/CellsContainer"]
layout_mode = 2
text = "X"

[node name="Label8" type="Label" parent="VBoxContainer/CellsContainer"]
layout_mode = 2
text = "X"

[node name="Label9" type="Label" parent="VBoxContainer/CellsContainer"]
layout_mode = 2
text = "X"

[node name="Label10" type="Label" parent="VBoxContainer/CellsContainer"]
layout_mode = 2
text = "X"

[node name="Label11" type="Label" parent="VBoxContainer/CellsContainer"]
layout_mode = 2
text = "X"

[node name="Label12" type="Label" parent="VBoxContainer/CellsContainer"]
layout_mode = 2
text = "X"

[node name="HBoxContainer2" type="HBoxContainer" parent="VBoxContainer"]
layout_mode = 2
size_flags_horizontal = 4

[node name="AutoSolve" type="Button" parent="VBoxContainer/HBoxContainer2"]
unique_name_in_owner = true
layout_mode = 2
text = "Solve"

[node name="PauseButton" type="Button" parent="VBoxContainer/HBoxContainer2"]
unique_name_in_owner = true
layout_mode = 2
text = "Pause"

[node name="InstantSolve" type="Button" parent="VBoxContainer/HBoxContainer2"]
unique_name_in_owner = true
layout_mode = 2
text = "Solve now!"

[node name="StepButton" type="Button" parent="VBoxContainer/HBoxContainer2"]
unique_name_in_owner = true
layout_mode = 2
text = "Step"

[node name="ResetButton" type="Button" parent="VBoxContainer/HBoxContainer2"]
layout_mode = 2
text = "Reset"

[node name="Timer" type="Timer" parent="."]
wait_time = 0.01
autostart = true

[connection signal="value_changed" from="VBoxContainer/HBoxContainer/WidthSlider" to="." method="_on_width_slider_value_changed"]
[connection signal="value_changed" from="VBoxContainer/HBoxContainer/HeightSlider" to="." method="_on_height_slider_value_changed"]
[connection signal="pressed" from="VBoxContainer/HBoxContainer2/AutoSolve" to="." method="_on_auto_solve_pressed"]
[connection signal="pressed" from="VBoxContainer/HBoxContainer2/PauseButton" to="." method="_on_pause_button_pressed"]
[connection signal="pressed" from="VBoxContainer/HBoxContainer2/InstantSolve" to="." method="_on_instant_solve_pressed"]
[connection signal="pressed" from="VBoxContainer/HBoxContainer2/StepButton" to="." method="_on_step_button_pressed"]
[connection signal="pressed" from="VBoxContainer/HBoxContainer2/ResetButton" to="." method="_on_reset_button_pressed"]
[connection signal="timeout" from="Timer" to="." method="_on_timer_timeout"]