Which Half-Life 2 Facts work in Garry's Mod?

0:00 Explanation for why you would watch this video (skip if you watch videos for no reason)
0:33 Protection from a train
1:13 How the game prevents you from blocking the crane
1:55 Looking at friendly NPCs makes you reload faster
2:23 SMG-wielding NPCs leave a variable amount of ammo in the gun on death
2:38 Receiving health after dying makes you a flying zombie
3:16 Props get stuck in their "about to explode" state
3:43 Crazy Harpoon
3:58 Free floating energy balls have weird collisions
4:22 Alyx typing on an invisible computer in the car
4:59 Cheat codes
5:22 Crossbow shots go through Alyx on only a single level
5:30 Crossbow shots get frozen by pickups
5:37 Fire rpg then enter vehicle
5:52 Blinky menu logos
6:00 Floating turrets
6:14 110 FOV is bad
6:34 Background maps
6:47 Secret tram ride
7:09 Getting pulled out of a vehicle by a barnacle
7:22 If you enter a vehicle when leaving a ladder, you teleport back to the ladder when you leave the vehicle
8:04 Jumping on a hunter flechette

[muratsmg]

The reason why Alyx can't get in the Muscle Car it's because she's missing EP2 animations, There are mods that can fix the missing Episodic animations but will also break HL2 Animations so there are weird stuff that can happen

[Pacca]

GMOD actually has extensive support for Half Life Source, so it's no surprise the train functionality for the object on the elevator is restored. Really cool though!

[bluewave]

2:33 You can change the difficulty by typing ‘skill 1’, ‘skill 2’, or ‘skill 3’ in the console. Works just the same as Half Life 2

[adlertolentino]

Since Gmod is only designed for sandbox purposes, most features from HL2 are kind of edited for Gmod, Not only those, but when trying to play all of the Half-Life 2 campaigns in Gmod, you might notice missing animations, some of the other ones are scripts, sounds, function and so on. I bet people tried opening VPK files on Half-Life 2 file directory and copy all of the important files here, so it should work. Apparently, there are add-ons that can fix these, but not all.

[KiwifruitDev]

I always use that instant explosive bug to troll players in gmod, I hope it never gets patched.

[Nico_Nilla]

If someone can use the "out of body" thing to float through a level undetected it could be a cool speedrun idea.
Half life Spirit %

[forkbobm]

7:21 imagine if that happened to someone back in 2004 then they got really confused why it just teleported them back and didnt load the next level

[anantasilna]

3:03 if you download the original hl2 player model(untextured gordon)it has no ragdolls and you can do the thing witout getting healed so every time you die yo can still move

[MilesHadley]

Absolutely fascinating knowledge regarding the disembodied player entity, I'll be keeping an eye out if anything interesting regarding this is discovered, such as being able to activate triggers for unique results, etc.

[legoer]

You can actually make a mine with the explosive barrel bug by welding it to another object while its buged.

[dithercat]

the player entity continuing to move after death has been a thing for many years, i remember playing with it a little
iirc if the clientside ragdoll gets removed (eg by cleaning up the server) then the camera will follow the player entity instead, though that might have been patched these days

[ThankYouForComing]

The fact that you can run most HL2 stuff in Gmod was awesome. In the old days I would load into HL2 maps inside Gmod then use the Funbox to spawn in crazy entities or weapons like the nuke pistol (I forget the name but it would shoot down a huge rainbow and explode the entire screen). The HL2 game at the time was working almost the same as if you played it vanilla and you can go through loading triggers etc and continue on through the game from map to map. This was over 10 years ago so I'm not sure if it still works the same way. I got near the end of the game and spawned in a bunch of Alyx's which broke everything. Good times.

[jumbojoshfrombanban]

7:01 This happens to the Portal 2 elevator type panels too, for some reason

[danielbedrossian]

Oh cool, Gmod Alyx goes Flintstons-style.

Interesting, in HL2 DM there was a deathrun map withe a HL1 rideable vehicle 'lift' slab.
And if I remeber correctly Airboats weren't enterable if you shot a rocket.

[rufusthehunalprophet]

When I was playing hl2 and using the powerful harpoon to kill antlion, it made 20 ragdolls in an explosion instead of one when I killed it. This happened in the area where you get the harpoon

[da_person]

6:00 fun fact:If you bring turrets from the previous rooms all the way to this one some will be hostile to mossmen and Eli and are completely capable of killing them so save a lot when doing this so if it happens you can go back

[TrustyGun]

6:48 the hud is probably because of hl:source, isn't it?

[TinyDeskEngineer]

I think the reason the barnacle'd airboat glitch doesn't involve graphical bugs with the flashlight is because the projected texture limit (which includes the flashlight since ep1) was increased to 9 in Garry's Mod, from the original limit of 1.

[PitLord]

In GMod, Rebels with RPGs don't have lasers to guide their rockets. I think some addon maps enable the lasers but I'm not really sure.

GMod Combine Soldiers are also spawned without a squad so battling them in a custom GMod map will have them all firing at you. They also seem to prioritize higher-value targets (usually the player) which will lead to them completely ignoring the shotgun-wielding Rebel right next to them.

[NunyaBiznisBrah]

2:40 I used to accidentally abuse this during round resets on deathrun. Would let you essentially noclip to the end of the map, or activate all the death traps if you wish