list all artworks from res://

I cannot simply explore the res:// filesystem on Android.
As a workaround, I create a static list of embedded artworks.

src/FileList.gd

@@ -1,23 +1,24 @@
 extends ItemList
 
 signal file_selected(path)
+signal texture_selected(texture)
 
 var _parent_display_name := "<parent directory>"
 var _sep := "/"
 var _dir := Directory.new()
 
-export var root_dir: String =  OS.get_system_dir(OS.SYSTEM_DIR_PICTURES)
+export var root_dir: String
 export var walkable := false
 export var folder_texture: Texture = null
 export var parent_folder_texture: Texture = null
 
-# Called when the node enters the scene tree for the first time.
 func _ready():
-	if root_dir != null:
+	print_debug("root dir: ", root_dir)
+	if root_dir != null and not root_dir.empty():
 		populate(root_dir)
 
 func populate(dir: String) -> void:
-	print_debug(dir)
+	print_debug("populate ", dir)
 	clear()
 	
 	if _dir.change_dir(dir) != OK:
@@ -49,12 +50,17 @@ func populate(dir: String) -> void:
 	sort_items_by_text()
 
 func _on_FileList_item_selected(index):
-	var item_text := get_item_text(index)
+	emit_signal("texture_selected", get_item_icon(index))
-	if item_text == _parent_display_name:
+
-		item_text = ".."
+#	if root_dir == null or root_dir.empty():
-	if _dir.dir_exists(item_text):
+#		emit_signal("texture_selected", get_item_icon(index))
-		populate(item_text)
+#		return
-	else:
+#
-		var full_path = root_dir + _sep + item_text
+#	var item_text := get_item_text(index)
-		print_debug(full_path)
+#	if item_text == _parent_display_name:
-		emit_signal("file_selected", full_path)
+#		item_text = ".."
+#	if _dir.dir_exists(item_text):
+#		populate(item_text)
+#	else:
+#		var full_path = root_dir + _sep + item_text
+#		emit_signal("file_selected", full_path)

src/ImagePicker.gd

@@ -3,11 +3,25 @@ class_name ImagePicker
 extends Panel
 
 signal file_selected(path)
+signal texture_selected(texture)
+signal canceled()
+
+var _fs_tab_index := 1
 
 onready var fs_list := $VBoxContainer/TabContainer/Filesystem/FileList
 
 func _ready():
-	fs_list.populate(OS.get_system_dir(OS.SYSTEM_DIR_PICTURES))
+	# TODO: fix Android
+	if OS.get_name() == "Android":
+		$VBoxContainer/TabContainer.set_tab_disabled(_fs_tab_index, true)
+	else:
+		fs_list.populate(OS.get_system_dir(OS.SYSTEM_DIR_PICTURES))
 
 func _on_FileList_file_selected(path):
 	emit_signal("file_selected", path)
+
+func _on_FileList_texture_selected(texture):
+	emit_signal("texture_selected", texture)
+
+func _on_Cancel_pressed():
+	emit_signal("canceled")

src/ImagePicker.tscn

@@ -1,7 +1,10 @@
-[gd_scene load_steps=3 format=2]
+[gd_scene load_steps=6 format=2]
 
 [ext_resource path="res://src/ImagePicker.gd" type="Script" id=1]
 [ext_resource path="res://src/FileList.tscn" type="PackedScene" id=2]
+[ext_resource path="res://assets/artworks/hokusai.jpg" type="Texture" id=3]
+[ext_resource path="res://assets/artworks/escher_convex_concave.jpg" type="Texture" id=4]
+[ext_resource path="res://assets/artworks/escher_lizards.jpg" type="Texture" id=5]
 
 [node name="ImagePicker" type="Panel"]
 anchor_right = 1.0
@@ -29,7 +32,7 @@ __meta__ = {
 "_edit_use_anchors_": false
 }
 
-[node name="Taqin" type="Tabs" parent="VBoxContainer/TabContainer"]
+[node name="App" type="Tabs" parent="VBoxContainer/TabContainer"]
 anchor_right = 1.0
 anchor_bottom = 1.0
 margin_left = 8.0
@@ -38,7 +41,11 @@ margin_right = -8.0
 margin_bottom = -8.0
 rect_clip_content = true
 
-[node name="FileList" parent="VBoxContainer/TabContainer/Taqin" instance=ExtResource( 2 )]
+[node name="FileList" parent="VBoxContainer/TabContainer/App" instance=ExtResource( 2 )]
+items = [ "", ExtResource( 4 ), false, "", ExtResource( 5 ), false, "", ExtResource( 3 ), false ]
+root_dir = ""
+folder_texture = null
+parent_folder_texture = null
 
 [node name="Filesystem" type="Tabs" parent="VBoxContainer/TabContainer"]
 visible = false
@@ -50,10 +57,10 @@ margin_right = -8.0
 margin_bottom = -8.0
 
 [node name="FileList" parent="VBoxContainer/TabContainer/Filesystem" instance=ExtResource( 2 )]
-root_dir = "/home/fabs/Pictures"
+root_dir = ""
 walkable = true
 
-[node name="Button" type="Button" parent="VBoxContainer"]
+[node name="Cancel" type="Button" parent="VBoxContainer"]
 margin_top = 520.0
 margin_right = 1024.0
 margin_bottom = 600.0
@@ -65,5 +72,6 @@ __meta__ = {
 }
 [connection signal="item_rect_changed" from="." to="." method="_on_ImagePicker_item_rect_changed"]
 [connection signal="resized" from="." to="." method="_on_ImagePicker_resized"]
-[connection signal="file_selected" from="VBoxContainer/TabContainer/Taqin/FileList" to="." method="_on_FileList_file_selected"]
+[connection signal="texture_selected" from="VBoxContainer/TabContainer/App/FileList" to="." method="_on_FileList_texture_selected"]
 [connection signal="file_selected" from="VBoxContainer/TabContainer/Filesystem/FileList" to="." method="_on_FileList_file_selected"]
+[connection signal="pressed" from="VBoxContainer/Cancel" to="." method="_on_Cancel_pressed"]

src/Main.tscn

@@ -75,7 +75,7 @@ rect_min_size = Vector2( 0, 70 )
 text = "Hints"
 
 [node name="NewGamePanel" parent="." instance=ExtResource( 3 )]
-rect_pivot_offset = Vector2( 203, 134 )
+rect_pivot_offset = Vector2( 4, 4 )
 [connection signal="state_changed" from="GridContainer/Taquin" to="." method="_on_Taquin_state_changed"]
 [connection signal="pressed" from="GridContainer/VBoxContainer/New Game" to="." method="_on_New_game_pressed"]
 [connection signal="button_down" from="GridContainer/VBoxContainer/Hints" to="GridContainer/Taquin" method="_on_Hints_button_down"]

src/NewGamePanel.gd

@@ -2,9 +2,10 @@ tool
 class_name NewGamePanel
 extends PopupPanel
 
-signal start_triggered(config)
+signal start_triggered(config, texture)
 
 const pref_path := "user://preferences.cfg"
+const cached_artwork_path := "user://artwork.dat"
 
 const easy_columns := 3
 const easy_rows := 3
@@ -15,19 +16,17 @@ const normal_iterations := 10
 const hard_columns := 5
 const hard_rows := 5
 const hard_iterations := 30
-const default_artwork_path := "res://assets/hokusai.jpg"
 
 const Utils = preload("res://src/Utils.gd")
 
 export var window_scale_factor = 0.9 # how big the popup will be compared to screen
+export var default_artwork_texture: Texture
 
 var preferences = ConfigFile.new()
 var fade_duration = 0.2
 var fade_scale_factor = 0.9
 var flip_duration = 0.4
 
-var _artwork_path: String = default_artwork_path
-
 onready var popup = $"."
 onready var panel = $Panel
 onready var edit_panel = $EditPanel
@@ -153,6 +152,15 @@ func _update_description():
 	desc.add_text("%d" % [iterations])
 	desc.pop()
 
+func _set_artwork(tex: Texture) -> void:
+	preview.texture = tex
+	
+	var file = File.new()
+	if file.open(cached_artwork_path, File.WRITE) != OK:
+		assert(false)
+	file.store_var(tex.get_data(), true)
+	file.close()
+
 #
 # Signals
 #
@@ -180,12 +188,10 @@ func _on_Start_pressed():
 		preferences.set_value("game", "columns", columns_spinbox.value)
 		preferences.set_value("game", "rows", rows_spinbox.value)
 		preferences.set_value("game", "shuffle_iterations", iterations_spinbox.value)
-	
-	preferences.set_value("game", "artwork_path", _artwork_path)
 
 	preferences.save(pref_path)
 
-	emit_signal("start_triggered", preferences)
+	emit_signal("start_triggered", preferences, preview.texture)
 	fade_out()
 
 func _on_NewGamePanel_about_to_show():
@@ -201,9 +207,9 @@ func _on_NewGamePanel_about_to_show():
 	
 	_update_description()
 	
-	_artwork_path = preferences.get_value("game", "artwork_path", default_artwork_path)
+	preview.texture = Utils.deserialize_texture(cached_artwork_path)
-	print_debug("artwork path: ", _artwork_path)
+	if preview.texture == null:
-	preview.texture = Utils.load_texture_from_path(_artwork_path)
+		preview.texture = default_artwork_texture
 
 #	$Panel/Start.grab_focus()
 	fade_in()
@@ -236,45 +242,32 @@ func _on_Custom_pressed():
 
 func _on_LoadImage_pressed():
 	flip_over($ImagePicker)
-#	if OS.get_name() == "Android":
-#		$FileDialog.current_dir = "/storage/emulated/0/"
-#	$FileDialog.popup_centered(rect_size)
 
-func _on_FileDialog_file_selected(path: String):
+#func _on_ImagePicker_file_selected(path):
-	var texture := load(path)
+#	print_debug(path)
-	if texture == null:
+#	var texture := load(path)
-		print_debug("Cannot load image from path: ", path)
+#	if texture == null:
-		return
+#		print_debug("Cannot load image from path: ", path)
-	preview.texture = texture
+#		return
-		
+#	preview.texture = texture
-	var directory = Directory.new()	
+#
-	# TODO: remove previous artwork.png, artwork.jpg files
+#	var file = File.new()
-	var cached_artwork_path := "user://artwork.%s" % [path.get_extension()]
+#	file.store_var(texture)
-	var error = directory.copy(path, cached_artwork_path)
+#
-	if error != OK:
+#	var directory = Directory.new()	
-		print_debug("Cannot cache image")
+#	# TODO: remove previous artwork.png, artwork.jpg files
-		_artwork_path = path
+#	var cached_artwork_path := "user://artwork.%s" % [path.get_extension()]
-	else:
+#	var error = directory.copy(path, cached_artwork_path)
-		_artwork_path = cached_artwork_path
+#	if error != OK:
+#		print_debug("Cannot cache image")
+#		_artwork_path = path
+#	else:
+#		_artwork_path = cached_artwork_path
+#	flip_back($ImagePicker)
 
-func _on_FileDialog_dir_selected(dir):
+func _on_ImagePicker_canceled():
-	print_debug("dir selected")
+	flip_back($ImagePicker)
-
+
-func _on_ImagePicker_file_selected(path):
+func _on_ImagePicker_texture_selected(texture):
-	print_debug(path)
+	_set_artwork(texture)
-	var texture := load(path)
-	if texture == null:
-		print_debug("Cannot load image from path: ", path)
-		return
-	preview.texture = texture
-		
-	var directory = Directory.new()	
-	# TODO: remove previous artwork.png, artwork.jpg files
-	var cached_artwork_path := "user://artwork.%s" % [path.get_extension()]
-	var error = directory.copy(path, cached_artwork_path)
-	if error != OK:
-		print_debug("Cannot cache image")
-		_artwork_path = path
-	else:
-		_artwork_path = cached_artwork_path
 	flip_back($ImagePicker)

src/NewGamePanel.tscn

@@ -381,23 +381,9 @@ margin_left = 4.0
 margin_top = 4.0
 margin_right = -4.0
 margin_bottom = -4.0
+rect_clip_content = true
 
 [node name="Tween" type="Tween" parent="."]
-
-[node name="FileDialog" type="FileDialog" parent="."]
-margin_left = 4.0
-margin_top = 4.0
-margin_right = 1020.0
-margin_bottom = 596.0
-window_title = "Open a File"
-mode = 0
-access = 2
-filters = PoolStringArray( "*.png ; PNG Images", "*.jpg, *.jpeg ; JPEG Images" )
-current_dir = "/home/fabs/Code/taqin"
-current_path = "/home/fabs/Code/taqin/"
-__meta__ = {
-"_edit_use_anchors_": false
-}
 [connection signal="about_to_show" from="." to="." method="_on_NewGamePanel_about_to_show"]
 [connection signal="pressed" from="Panel/VBoxContainer/Difficulty/Easy" to="." method="_on_Easy_pressed"]
 [connection signal="pressed" from="Panel/VBoxContainer/Difficulty/Normal" to="." method="_on_Normal_pressed"]
@@ -408,6 +394,5 @@ __meta__ = {
 [connection signal="pressed" from="Panel/Cancel" to="." method="_on_Cancel_pressed"]
 [connection signal="pressed" from="EditPanel/Cancel" to="." method="_on_Edit_Cancel_pressed"]
 [connection signal="pressed" from="EditPanel/Save" to="." method="_on_Edit_Save_pressed"]
-[connection signal="file_selected" from="ImagePicker" to="." method="_on_ImagePicker_file_selected"]
+[connection signal="canceled" from="ImagePicker" to="." method="_on_ImagePicker_canceled"]
-[connection signal="dir_selected" from="FileDialog" to="." method="_on_FileDialog_dir_selected"]
+[connection signal="texture_selected" from="ImagePicker" to="." method="_on_ImagePicker_texture_selected"]
-[connection signal="file_selected" from="FileDialog" to="." method="_on_FileDialog_file_selected"]

src/Taquin.gd

@@ -52,7 +52,7 @@ var local_max_position := Vector2.ZERO
 
 var hint_active := false setget set_hint_active, get_hint_active
 
-var _artwork_path := NewGamePanel.default_artwork_path
+#var _artwork_path := NewGamePanel.default_artwork_path
 
 onready var hint_tween = $HintTween
 
@@ -87,8 +87,7 @@ func _ready() -> void:
 	if autoload_fresh_game:
 		start_fresh()
 		if artwork_texture == null:
-			print_debug("Load texture from: ", NewGamePanel.default_artwork_path)
+			artwork_texture = NewGamePanel.default_artwork_texture
-			artwork_texture = Utils.load_texture_from_path(NewGamePanel.default_artwork_path)
 		new_game(NewGamePanel.normal_columns, NewGamePanel.normal_rows, NewGamePanel.normal_iterations, artwork_texture)
 
 func _unhandled_input(event):
@@ -372,23 +371,19 @@ func save() -> Dictionary:
 		"columns": columns,
 		"pieces": serialized_pieces,
 		"hidden_piece": serialized_pieces.size(),
-		"artwork_path": _artwork_path,
+#		"artwork_path": _artwork_path,
 	}
 
 func load(saved_state) -> bool:
 	print("load save state: ", saved_state)
-	if not saved_state.has_all(["rows", "columns", "pieces", "hidden_piece", "artwork_path"]):
+	if not saved_state.has_all(["rows", "columns", "pieces", "hidden_piece"]):
 		assert(false, "Invalid save state")
 		return false
 	rows = saved_state["rows"]
 	columns = saved_state["columns"]
-
+	
-	var texture := Utils.load_texture_from_path(saved_state["artwork_path"])
+	artwork_texture = Utils.deserialize_texture(NewGamePanel.cached_artwork_path)
-	if texture == null:
+	assert(artwork_texture != null)
-		return false
-	artwork_texture = texture
-	_artwork_path = saved_state["artwork_path"]
-	print_debug("Load artwork from: ", _artwork_path)
 
 	init(saved_state["pieces"], saved_state["hidden_piece"], artwork_texture)
 	return true
@@ -498,20 +493,15 @@ func _on_AnimationPlayer_animation_finished(anim_name):
 		"MovingPiece":
 			commit_slide(true, true)
 
-func _on_NewGamePanel_start_triggered(preferences):
+func _on_NewGamePanel_start_triggered(preferences, texture):
 	var difficulty_mode = preferences.get_value("game", "difficulty", "normal")
 	print_debug("difficulty mode: ", difficulty_mode)
 	var columns = preferences.get_value("game", "columns", NewGamePanel.normal_columns)
 	var rows = preferences.get_value("game", "rows", NewGamePanel.normal_rows)
 	var shuffle_iterations = preferences.get_value("game", "shuffle_iterations", NewGamePanel.normal_iterations)
-	var artwork_path = preferences.get_value("game", "artwork_path", NewGamePanel.default_artwork_path)
+	artwork_texture = texture
-	print_debug("new game triggered with artwork path: ", artwork_path)
-	artwork_texture = Utils.load_texture_from_path(artwork_path)
-	if artwork_path != null:
-		_artwork_path = artwork_path
 	new_game(columns, rows, shuffle_iterations, artwork_texture)
 
-
 func _on_Hints_button_down():
 	if not hint_active:
 		show_hints()

src/Utils.gd

@@ -7,3 +7,12 @@ static func load_texture_from_path(path: String) -> Texture:
 	texture.create_from_image(img)
 	return texture
 
+static func deserialize_texture(path: String) -> Texture:
+	var file := File.new()
+	if file.open(path, File.READ) != OK:
+		return null
+	var img: Image = file.get_var(true)
+	file.close()
+	var img_tex = ImageTexture.new()
+	img_tex.create_from_image(img)
+	return img_tex