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static/posts/phobos/post.typ

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+#let post_title = "Phobos"
+#let post_preview_image = "phobos.png"
+#let post_summary = "Making a rocket platformer in assembly"
+
+= Phobos
+
+One of the coolest things I've developed is a game, fully written in
+assembly.
+
+
+I say this because it is the perfect intersection of many things I enjoy;
+low level programming, physics, space, simulation development, and game design.
+Also small enough of a project that I could complete it in under a couple
+of months, so another win. I even named the game based on the emulator, as
+Phobos is a moon of Mars.
+
+The instructions for this
+assignment were very broad, to develop a platformer game in assembly.
+This left a lot of room for creative freedom, especially due to the
+loose definition of platformer. With infinite time I would have
+developed a whole rocket simulator, and used the justification that the
+launchpad was a platform.
+
+On the technical side this was a very difficult project. There are
+only about 16 variables actually usable in MIPS, and a lot of them are reserved
+to specific logical controls under best practice. Then following the many
+loops and recursive, real-time functionality required extensive and efficient
+use of the stack. Ideally accessing a few bytes shouldn't strike the fear
+of low framerates to mind, but the Mars-MIPS emulator I was using was far
+from efficient.
+
+=== Notable Features
+
+- Raycast collision detection and repositioning
+- Sub-pixel velocity and positioning
+- Awesome pixel graphics (the rocket shoots fire!)
+- High framerates (for a low-performance emulator)
+- Enemies shooting at you!
+- Loot pickups
+
+Probably the most annoying part of this was that the emulator couldn't
+handle simutaineous key inputs. Fortunately I have over a thousand hours
+experience landing rockets on the #link("https://kerbalspaceprogram.fandom.com/wiki/Mun")[Mün]
+so I was comfortable giving a few unique key inputs per second. I never imagined
+this is something I would be proud, and I still don't think I am. However,
+it works.
+
+At this point you may have realized I am a bit of a
+space nerd. Enjoy this recording I made at 1am demonstrating the
+features of my game to a TA, compressed to the point that the audio has
+texture.
+
+// <video width="90%" controls>
+// <track kind="captions" />
+// <source src="src/lib/phobos/demo.mp4" type="video/mp4" />
+// Your browser does not support the video.
+// </video><br />
+// The
+// <a href="https://github.com/jjanella/Phobos">source code</a> is also available
+// for your enjoyment.