questions define whether you can progress

src/lab_runtime.gd

@@ -6,6 +6,10 @@ const MENU_PREFAB: PackedScene = preload("uid://c2ciwyjf7au6l")
 var current_lab: Labwork
 var anwsers: Array[int]
 var correctness: Array[bool]
+var tries: int
+
+func questions_anwsered() -> bool:
+	return float(correctness.count(true))/len(correctness) >= 0.6
 
 func save():
 	var path: String = OS.get_system_dir(OS.SYSTEM_DIR_DESKTOP) + "/" + current_lab.lab_name + "-" + Time.get_datetime_string_from_system() + ".txt"

src/ui/lab_tabs.gd

@@ -5,12 +5,23 @@ func _ready() -> void:
 	$ConfirmationDialog.confirmed.connect(LabRuntime.end_lab)
 
 func _on_tab_clicked(tab: int) -> void:
-	match tab:
-		0:
-			$Worktabs.visible = true
-		1:
-			$Questions.visible = true
-		2:
-			$ConfirmationDialog.popup_centered()
-		3:
-			GuiSignalBus.clear_table.emit()
+	if tab == 1:
+		$Questions.visible = true
+	elif LabRuntime.questions_anwsered():
+		match tab:
+			0:
+				$Worktabs.visible = true
+			2:
+				$ConfirmationDialog.popup_centered()
+			3:
+				GuiSignalBus.clear_table.emit()
+
+func _process(_delta: float) -> void:
+	var anwsered = LabRuntime.questions_anwsered()
+	set_tab_disabled(0,anwsered)
+	set_tab_disabled(2,anwsered)
+	set_tab_disabled(3,anwsered)
+
+
+func _on_worktabs_close_requested() -> void:
+	$Worktabs.visible = false