Ferramenta didática para ensino de usabilidade e acessibilidade para estudantes de IHC desenvolvida na godot engine

Abstract

UX Detective is an interactive digital didactic tool for the practical teaching of Nielsen’s ten usability heuristics. Through it, students and computing professionals act as usability evaluators: they analyze realistic interfaces with intentionally injected heuristic violations, identify and mark the problems found, and receive immediate for- mative feedback with individualized didactic explanations per violation. The teaching of Human-Computer Interaction in Computer courses presents gaps in the practical application of usability and accessibility concepts, a demand that motivated the de- velopment of this tool on Godot Engine 4.x using GDScript as its main programming language. The adopted methodology was characterized as applied research of an exploratory and descriptive nature, with a qualitative approach. The development fol- lowed structured methodological stages, including bibliographic analysis, pedagogical requirements modeling, incremental implementation of functional prototypes, and com- prehensive technical documentation. An atomic-systems architecture communicating through signals was adopted, comprising six autoloads (EventBus, SceneManager, GameSession, ProgressTracker, ThemeManager, and CursorManager), a catalog of accessible interfaces compliant with the WAI-ARIA standard, a scenario catalog based on .tres resources, as well as managers, controllers, and helpers responsible for the dynamic composition of the evaluation interface. As a result, a functional tool was deli- vered with ten scenarios corresponding to Nielsen’s heuristics H1–H10 in Normal mode (Easy difficulty), a progressive hint system, a results screen providing per-violation di- agnostic feedback, and accessibility resources aligned with WCAG 2.1. The tool is duly documented and aligned with pedagogical practices for HCI teaching, contributing to the training of undergraduate computing students and to the qualification of professio- nals working in usability and accessibility.