add particules when winning

game/src/Main.gd

@@ -12,7 +12,7 @@ func _on_GameState_state_changed(previous, current):
 		GameState.State.WINNING:
 			print("Solved!")
 			# TODO: wait for the animation to finish before game over
-			$GameState.transition_to(GameState.State.GAME_OVER)
+			#$GameState.transition_to(GameState.State.GAME_OVER)
 		GameState.State.GAME_OVER:
 			$ColorRect.visible = true
 			$ColorRect.material.set_shader_param("blur_amount", blur_amount)

game/src/Main.tscn

@@ -54,3 +54,4 @@ anchor_bottom = 1.0
 [node name="GameState" type="Node" parent="."]
 script = ExtResource( 3 )
 [connection signal="state_changed" from="GameState" to="." method="_on_GameState_state_changed"]
+[connection signal="state_changed" from="GameState" to="HSplitContainer/Taquin" method="_on_GameState_state_changed"]

game/src/Piece.gd

@@ -1,6 +1,6 @@
+tool
 extends Node2D
 class_name Piece
-tool
 
 export var size: int = 160
 

game/src/Taquin.gd

@@ -1,6 +1,6 @@
+tool
 extends Control
 class_name Taquin
-tool
 
 var Piece = preload("res://src/Piece.tscn")
 
@@ -39,6 +39,7 @@ func compute_padding(piece_size: int) -> Vector2:
 
 func _ready() -> void:
 	$AnimationPlayer/MockPiece.visible = false
+	$Particles2D.emitting = false
 
 	$Background.rect_size.x = width
 	$Background.rect_size.y = height
@@ -148,8 +149,8 @@ func move_piece(direction) -> bool:
 	update()
 	if check_solved():
 		var game_state = get_node("/root/Main/GameState") as GameState
-		game_state.transition_to(GameState.State.WINNING)
+		if game_state != null:
-		emit_signal("solved")
+			game_state.transition_to(GameState.State.WINNING)
 	
 	return true
 
@@ -171,4 +172,9 @@ func check_solved() -> bool:
 		for r in range(rows):
 			if pieces[c][r].number != 1 + c + r * columns:
 				return false
-	return true
+	return true
+
+func _on_GameState_state_changed(previous, current):
+	match current:
+		GameState.State.WINNING:
+			$Particles2D.emitting = true

game/src/Taquin.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=4 format=2]
+[gd_scene load_steps=7 format=2]
 
 [ext_resource path="res://src/Taquin.gd" type="Script" id=1]
 [ext_resource path="res://src/Piece.tscn" type="PackedScene" id=2]
@@ -20,6 +20,28 @@ tracks/0/keys = {
 "values": [ Vector2( 15, 15 ), Vector2( 175, 15 ) ]
 }
 
+[sub_resource type="Gradient" id=3]
+colors = PoolColorArray( 1, 1, 1, 1, 1, 0.140625, 0.140625, 1 )
+
+[sub_resource type="GradientTexture" id=4]
+gradient = SubResource( 3 )
+
+[sub_resource type="ParticlesMaterial" id=2]
+emission_shape = 2
+emission_box_extents = Vector3( 10, 5, 1 )
+flag_disable_z = true
+spread = 180.0
+gravity = Vector3( 0, 10, 0 )
+initial_velocity = 50.0
+angular_velocity = 28.0
+orbit_velocity = 0.0
+orbit_velocity_random = 0.0
+linear_accel = 1.0
+damping = 22.0
+angle = 45.0
+angle_random = 1.0
+color_ramp = SubResource( 4 )
+
 [node name="Taquin" type="Control"]
 rect_min_size = Vector2( 540, 540 )
 script = ExtResource( 1 )
@@ -44,3 +66,18 @@ size = 160
 margin_right = 160.0
 margin_bottom = 160.0
 color = Color( 0.137255, 0.976471, 0.0196078, 1 )
+
+[node name="Particles2D" type="Particles2D" parent="."]
+position = Vector2( 253, 262 )
+rotation = -1.5708
+amount = 30
+lifetime = 1.6
+preprocess = 0.25
+speed_scale = 1.25
+explosiveness = 1.0
+local_coords = false
+process_material = SubResource( 2 )
+
+[node name="Timer" type="Timer" parent="."]
+wait_time = 2.0
+one_shot = true