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Playable demo of a Wolfenstein-like FPS I have been developing on PICO-8.
Dark Streets is a first-person shooter for PICO-8, mechanically most similar to Wolfenstein 3D or Blake Stone, but also inspired by Doom, Blood, and Ion Fury.
I have been slowly developing this game in my free time over the last year and a half. I referenced LoDev and a paper by Amanatides and Woo for some of the raycasting steps, but the rest of the code and graphics are mine.
Big thanks to other PICO-8 first-person games:
Since the setting of the game is a city, I specifically wanted to write a renderer that could draw tall buildings, short objects, doors, and interiors. I think I am pretty close.
Pretty performant: Everything below takes up only 50-60% of CPU, unless you go crazy with geometry and distances.
Fixed camera height: This makes walls look better. Originally, I had variable camera height and headbob, but that made textures a bit too jagged.Might reconsider based on performance later.
Variable brightness: Based on distance, using draw palettes.
Floor textures: Pretty basic, using horizontal TLINE
Multiple floors! Normally, I see raycasters render just one floor (Caped Feline Arena and Anarch are notable exceptions), so this is a bit unusual, and it allows more interesting designs.
Ceilings. Although texture-less, ceilings are rendered separately from the sky, and allow for features such as archways, underpasses, and building interiors.
Animated doors: They are also rendered halfway on the tile to stand out from the walls.
Z-buffer and clipped sprites: This piece is not very efficient yet, but works pretty well.
You can walk around, open doors, pick up and fire weapons (but can't kill the enemies yet).
Variety of objects: Solid obstacles, ceiling decor (can be walked under), floor decor (cannot be walked through, but can be shot over)
Five weapons: Infinite pistol, shotgun, gatling gun, flamethrower, and a rocket launcher (unfinished).
One large level, hoping to keep it like that for final game. Might not be possible with number of objects per level.
Health and weapon pickups.
Weapon switching: When picking up a new weapon and when running out of ammo.
Enemies: Basic move-aim-fire behavior, in beginning stages.
Looking through open doors is slow. This is due to calculations on which vertical slice must be rendered for the door on each ray.
Adding many objects will slow the game down a lot, due to many visibility and collision calculations.
(C) 2024 CC BY Anton Yaky
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