In this detailed analysis of _Shenmue_ and _Shenmue II_, reverse engineering reveals how these games accurately approximate sun positions based on real-life Earth tilt angles while incorporating latitude values. Although initially seeming to use incorrect axial tilts, closer examination suggests it might be the other way around due to potential refactoring or compiler optimizations over time. The iterative process of reverse engineering highlights how understanding evolves as more details are uncovered in code analysis. These classic games not only entertain but also provide insight into game development philosophies and techniques used decades ago.
Full source code will be shared later for further exploration by interested readers or researchers.\
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