connect 'solved' signal

game/src/Main.gd

@@ -0,0 +1,17 @@
+extends Control
+
+# Declare member variables here. Examples:
+# var a = 2
+# var b = "text"
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	pass # Replace with function body.
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+#func _process(delta):
+#	pass
+
+
+func _on_Taquin_solved():
+	print("Solved!")

game/src/Main.tscn

@@ -1,9 +1,12 @@
-[gd_scene load_steps=2 format=2]
+[gd_scene load_steps=3 format=2]
 
-[ext_resource path="res://src/Taquin.tscn" type="PackedScene" id=1]
+[ext_resource path="res://src/Main.gd" type="Script" id=1]
+[ext_resource path="res://src/Taquin.tscn" type="PackedScene" id=2]
 
 [node name="Main" type="Control"]
 anchor_right = 1.0
 anchor_bottom = 1.0
+script = ExtResource( 1 )
 
-[node name="Taquin" parent="." instance=ExtResource( 1 )]
+[node name="Taquin" parent="." instance=ExtResource( 2 )]
+[connection signal="solved" from="Taquin" to="." method="_on_Taquin_solved"]

game/src/Taquin.gd

@@ -2,12 +2,16 @@ extends Node2D
 class_name Taquin
 tool
 
+signal solved
+
 var Piece = preload("res://src/Piece.tscn")
 
 export var rows: int = 4
 export var columns: int = 4
 export var width: int = 512
 export var height: int = 512
+export var difficulty: int = 10
+
 var interpiece: int = 5
 var padding = 10
 
@@ -47,7 +51,7 @@ func _ready() -> void:
 
 		pieces.append(pieces_row)
 
-	shuffle(10)
+	shuffle(difficulty)
 
 func compute_piece_size() -> int:
 	var w_size: int = (width - (2 * padding) - ((columns - 1) * interpiece)) / columns
@@ -93,7 +97,7 @@ func move_piece(direction) -> bool:
 	
 	update()
 	if check_solved():
-		print("solved")
+		emit_signal("solved")
 	
 	return true