Missed? It's all Doom's fault. The blockmap bug explained.

Missed? It's all Doom's fault. The blockmap bug explained.

Channel:
Coincident
Subscribers:
28,900
Published on ● Video Link: https://www.youtube.com/watch?v=-IYz6-KnvWU


Doom II: Hell on Earth
Game:
Doom II: Hell on Earth (1994)
Duration: 16:52
138,603 views
9,247

An analysis of doom's flawed collision detection. Learn how the Doom engine makes you shoot through things, even when your aim is perfect: it's not your fault after all! Doom's most infamous bug, explained in detail.

In this video, we explore the history behind the creation of the blockmap, and why it is necessary. After that, we take a look at the "edge-case" of this implementation, and how that creates the blockmap bug that we know today. Finally, we see how different aiming strategies can yield different results, when trying to avoid, or abuse this bug.

## Inspired by ##
"Shooting Through Things" by Colin Phipps (2003): http://games.moria.org.uk/doom/research/shooting-through-things

## Special Thanks to ##
JCD - for the all-ghosts bug example in doom 2 map 01
Vile - for the info on AV's DEMO1
And for taking the time to review the video before it went public:
NightTerror, TheLoneliness, Keyboard_Doomer, 4shockblast, kraflab, and dew.

## Music ##
Bobby Prince - Adrian's Asleep (Doom II Soundtrack, 1994)
Bobby Prince - Message for the Archvile (Doom II Soundtrack, 1994)
Bobby Prince - The Healer Stalks (Doom II Soundtrack, 1994)
Bobby Prince - In The Dark (Doom II Soundtrack, 1994)
Discover Bobby Prince https://open.spotify.com/artist/3k51kRSWR0D1ycjtohYMU3

## Related links, videos, and speedruns by order of appearance ##
E1M8 NoMo by depr4vity (2020): https://www.youtube.com/watch?v=sZjvAisQXaQ
Map01 All-Ghosts Bug by JCD (2020): N/A
Map24 Pacifist by Looper (2011): https://www.youtube.com/watch?v=ocjkWqLRQgg
E1M6 NoMo by depr4vity (2020): https://www.youtube.com/watch?v=PwnurjqsDmo
Map02 UV Speed by Looper (2020): https://dsdarchive.com/wads/doom2/leaderboard?category=UV+Speed&level=Map+02
E2M6 UV Speed by JCD (2019): https://www.youtube.com/watch?v=6GbwQy4xvoM
Blockmap Bug Example in Deepest Reaches by Bahdko: http://games.moria.org.uk/doom/research/shooting-through-things
Zone300 Map05 UV Fast by Coincident (2020): https://youtu.be/91h-P5sTmrI
Barrel Blind Run by Coincident (2020): https://youtu.be/Pk8bAQKj0gI
DOOM 2016 Campaign Trailer by Bethesda: https://www.youtube.com/watch?v=L-jMwgCIkJ4
E2M6 UV Max by Coincident (2020): https://youtu.be/aQBTXXevc-k
Zone300 Map09 UV Fast by Coincident (2020): https://youtu.be/JqskrJ0i11o
Alien Vendetta's deathmatch "DEMO1" by Anders and Kim (2002): https://www.doomworld.com/idgames/levels/doom2/megawads/av
"Beating the Icon of Sin Pacifist is IMPOSSIBLE... or is it?" by Coincident (2020): https://youtu.be/jWex9DpOSnA
Episode 2 UV Max by Coincident (2020): https://youtu.be/vGVW7YvU7i8
Dead Simple Nightmare No-Damage by Coincident (2020): https://youtu.be/R59Y4pXqmEs
Alien Vendetta Map26 UV Fast by Coincident (2020): https://youtu.be/qrwuisjwIPg

## Main Platforms ##

YouTube - https://www.youtube.com/c/coincident
Patreon - https://www.patreon.com/coincident
Twitch - https://www.twitch.tv/coincidente
Discord - https://discord.gg/nYDuB46

## Chapters ##

00:00 Intro
01:27 Origins of the Blockmap
05:38 Blockmap Bug Explained
10:37 Strategies to Deal With It
15:50 Outro

## Tags ##

#Doom #bug #collisiondetection



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Blockmap
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Other Statistics

Doom II: Hell on Earth Statistics For Coincident

Coincident currently has 6,435,039 views spread across 630 videos for Doom II: Hell on Earth. The game makes up over 5 days of published video on his channel, or 33.00% of the total watchable video for Doom II: Hell on Earth on Coincident's YouTube channel.