fps_engine

An FPS engine in the style of '90s shooters, like Doom and Duke Nukem.

This project will be using WebGPU via the wgpu crate for graphics, rather than a software renderer.

Features

As of right now, you can generate a level with the included level editor, walk around, and collide with walls in the way one would expect from a traditional first person game. The camera is fully 3D, and the player can look in whichever direction they want -- it isn't limited to just yaw.

Requirements

For the level editor (and subsequently, the engine itself) to work, Python Arcade needs to be installed.

Level Editor Controls

• S
  • Change scaling of exported level (1.0x, 1.25x, 1.5x, 1.75x, 2.0x)
• C
  • Clear everything
• Alt / Option + C
  • Clear all walls
• Ctrl / Cmd + C
  • Clear all points
• Ctrl / Cmd + Z
  • Undo last wall / point placement
• Ctrl / Cmd + S
  • Saves level to ./level.json
• Ctrl / Cmd + O
  • Opens level saved at ./level.json
• Ctrl / Cmd + Q
  • Quit the editor
• Left Click on empty space
  • Add new point
• Left Click on point
  • Select as left side of wall
• Left Click on point (while left is selected)
  • Add new wall
• Alt / Option + Left Click
  • Set spawn position
• Ctrl / Cmd + Left Click on point
  • Delete point
• Right Click
  • Deselect point

Engine Controls

• Escape / Q
  • Quit engine
• W / S
  • Move forward / backward
• A / D
  • Strafe left / right
• Move mouse cursor
  • Look around

References

The main references I used:

• Learn Wgpu Tutorial
• Paul's Online Math Notes
• Orthogonal Projection

Most of the other code came from me hacking bits together and my own knowledge of trig.