Noclip Flying in Half-Life 2 Glitch without Cheats

Channel:

Burny - Valve Source Games - Happys Edits

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Published on March 29, 2019 1:32:00 PM ● Video Link: https://www.youtube.com/watch?v=07wRq2Wtadw

Game:

Half-Life 2 (2004)

Duration: 4:57

21,642 views

626

My Half Life 2 Speedrun Stream: https://www.youtube.com/watch?v=TXHVm10uaEY
Today I took advantage of a speedrunning glitch with an airboat that gave me yesclip and quickclip, where I had noclip mode and then I could teleport through walls when I got onto the ground. The Half-Life 2 Engine is not broken at all!
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I really enjoy speedrunning Source games, such as Portal or Half-Life series, so here are some fun Half Life 2 Speedrun glitches and tricks in action.

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FAQ (recording, HUD, hitsound, first person miscs, PC,...) https://docs.google.com/document/d/1EX1Xq7E1NWudynWm5LJrghbwGwQL-bPUMTmPEQqywL0/edit?usp=sharing

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My favourite speedrun channels:
DeSinc - adding comedic value to speedrunning HL2 glitches, famous for his Using Glitches and Tricks series https://www.youtube.com/user/super6plx/

SourceRuns - Showcase of the best possible segmented speedruns of Half Life or Portal games, including some TAS (tool assisted speedruns), with their best project, Half-Life 2 Done Quicker - HL2 Speedrun in 40:49 https://www.youtube.com/user/sourceruns

quadrazid - Author or project leader of Half-Life in 20:41 legendary segmented Half-Life 1 speedrun
https://www.youtube.com/user/quadrazid

Maxam or maxamswe - Best Half Life 1 speedrunner, currently beating world record almost every week, his most viewed run being Half-Life 28:06.640 World Record Speedrun
https://www.youtube.com/channel/UCkiRD0sGaeh8yRJ4R9di5WA

Maltemller - World record holder of Half-Life 2
https://www.youtube.com/channel/UCnPzTJL2IiQeRLcUDC5TPbQ

Games Done Quick - Best collection of all kinds of speedruns, they also featured Half-Life 1, Half Life 2 and Portal 1 runners
https://www.youtube.com/user/gamesdonequick

Slvm - active russian Half-Life Speedrun streamer livestreams
https://www.youtube.com/channel/UCgcnJswE1m0zjz_c7pvVMBg

shar - His project Half-Life: Done Enormously Warped - Speedrun in 6:26 - WR using Save warp glitch
https://www.youtube.com/user/nok3a897CU

Half-Life 2 Done Quicker - HL2 Speedrun in 40:49 - WR by SourceRuns
https://www.youtube.com/watch?v=LnFjTG9J-T8

Half-Life 2 Gravity-Gun Only speedrun in 49:34.215
https://www.youtube.com/watch?v=t14yjrswh4w

Using Glitches and Tricks to Beat Half-Life 2
https://www.youtube.com/watch?v=gm9lE97sIJo

World Record Progression: Half Life 2 (New Engine) - Episode 15
https://www.youtube.com/watch?v=NdkzjHEjIyA

Glitch explained:
Each entity in source engine has two hitboxes - one in quake physics world, and another in havok (or vphys) physics world. This second hitbox is called "physics shadow".
Depending on type of the entity one of the hitboxes is dominant. Each frame results of havok physics simulation for barrels, rollermines, vehicles and etc will be copied over quake hitboxes of entities. For NPCs, rockets and elevators state is copied in reverse direction - quake to havok.
Player is special. Normally quake hitbox will overwrite havok shadow, but only if its movement is not blocked by any havok hitboxes. Player's hitbox will be copied in reverse - from havok to quake - if (a) havok hitbox is valid (not stuck in quake world), (b) player is touching a vphys object.
Quickclip works, because in vehicles havok hitbox has collisions masked out for everything except pickups (health, ammo). When you exit a vehicle, collision mask for havok physics should be changed to normal, but only if vehicle is present in the world. Barnacle forces you to exit a vehicle, but this process is interrupted as vehicle handle value, stored in Player class, is not valid. This allows you to "throw" havok hitbox through walls by colliding with a vphys object and teleport to a new location after it passes throug the wall into an empty space behind it.
You can see how it works by enabling "physicsshadow_render 1". Blue boxes are physics shadow and red boxes are quake boundary box. When you perform quickclip, you can notice how red box stays in place, but blue one keeps traveling through the wall. Use noclip and timescale to see it from the side.

family friendly pg clean
#HalfLife2 #HalfLife #Speedrun

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