Half-Life's Tau Cannon: A Quick Look

This project started November 15, 2023.
This video's subtitles destroyed my life.

Much credit to Matherunner's Half-Life Physics Reference https://www.jwchong.com/hl/weapons.ht...
Bunnymod XT https://github.com/YaLTeR/BunnymodXT
HL1 gauss debug mod by me https://github.com/Pinsplash/gaussdebug
Source debug mod by me https://gist.github.com/Pinsplash/27a...
Static visualizations done with Inkscape
Half-Life 1 code https://github.com/ValveSoftware/half... https://github.com/ValveSoftware/half...
Half-Life: Source code https://github.com/VSES/SourceEngine2...
Half-Life 2 code https://github.com/ValveSoftware/sour...

LORE
00:00 Intro
00:26 Name, Firing Mechanisms, Real Life Connections
03:47 Depleted Uranium??? How?
04:48 Origins

WHERE NORMAL PEOPLE WOULD STOP
05:09 Reflection Summary
06:00 Penetration Summary, Telegraphing (is that the right word?)
07:01 Recoil Summary

OH NO
07:34 Damage, Rate of Fire, Misc Stats and Behavior
09:00 DPS, TTK, Tactics
10:44 Ammo, DPA/APS
12:16 Ammo Efficiency Comparison of all Weapons that use Depleted Uranium
13:49 Gauss Boosting
16:38 Beam Behavior Intro, Line Traces
19:05 Piercing, Line Trace Prioritization
20:05 Reflection
21:06 Reflection Bypass
21:55 Reflections on the Sky, Reflection Explosions
22:35 Reflection Boost
22:59 Doublegauss
23:18 Reflection Damage Reduction
23:44 Penetration
25:02 Penetration Damage Reduction and Explosion
25:31 Post-Penetration
26:10 Nuking

BUGS
26:59 "It's void trust me bro" Bug
27:29 Negative 1 Ammo Bug (previously undocumented)
27:52 Selfgauss
29:43 Selfgaussing and You(r Hitboxes)
31:00 Selfgauss Misc
31:43 Inner Bypass (previously undocumented, hate the name, actually several distinct bypasses in a trenchcoat)
33:04 Func_pushable quirks (previously undocumented)
34:16 Penetration Backfire (previously undocumented, also secretly a penetration bypass but that's really a footnote)
35:13 Quickgauss
36:16 Rapid Fire

HALF-LIFE: SOURCE
38:53 Half-Life: Source's Laundry List of Changes
40:18 Selfgauss in Half-Life: Source
41:03 Line Traces in Half-Life: Source
41:49 Displacements

HALF-LIFE 2
43:52 Half-Life 2, Name, New Visuals
44:31 Power Source
45:09 Penetration Design Still Not Good
45:53 Cut Content (partially previously undocumented)
47:34 More Stats and Behavior, DPS & TTK
49:18 Penetration in Half-Life 2