Doom's Unlikely PDF Port: A Testament to its Enduring Legacy
A high school student's remarkable feat has added another bizarre entry to Doom's long list of unconventional platforms: a PDF file. While slow, the game remains playable, showcasing the enduring appeal and surprisingly adaptable nature of the 1993 classic.
Doom's compact size (a mere 2.39 megabytes) has always been a key factor in its portability. This has led to a wave of creative projects, with programmers and enthusiasts successfully running Doom on everything from refrigerators and alarm clocks (like the Nintendo Alarmo, where controls were mapped to the device's dials and buttons) to within other games (such as Balandro, albeit with performance limitations).
GitHub user ading2210 achieved this latest feat by leveraging PDF's JavaScript capabilities, which allow for 3D rendering, HTTP requests, and monitor detection. However, the limitations of the PDF format necessitated compromises. Instead of using individual text boxes for each pixel (which would be impractical given Doom's 320x200 resolution), ading2210 opted for a single text box per screen row. This results in a significantly slower, albeit functional, version of the game, lacking color, sound, and in-game text, with an 80ms per-frame response time.
These unconventional ports aren't about achieving optimal performance; they're a testament to Doom's enduring legacy and the boundless creativity of its community. Over three decades after its release, Doom continues to inspire innovation and demonstrate its relevance in unexpected ways. The ongoing experimentation suggests that the list of unusual platforms capable of running Doom will only continue to grow.