[Karamari Hospital] Optimized Basement Staircase Movement

Today i want to describe another run optimization done by @Lagloyavich while researching the "Karamari Hospital" Run in the Legacy Version of the game.
The Staircase towards the Basement was always a topic due the developer itself often changing its behaviour, including rejected runs in the "HD" Version after Sprints on the staircase has been disabled.

In order to secure the run, Lagloyavich tried to use the staircase within different angles. He ended up by running the staircase down/up in a diagonal down/up angle in order to safe "7 seconds per staircase, or 14 seconds in total" according to his own calculations.

The run is linked below.
https://www.youtube.com/watch?v=Yj0-xqEJVAE

Ghosthand Glitch Explained

Recently i went active again and looked up the current guides/forum entries of the community.
Mentionable for this idea behind this glitch is the "Locked Room" Glitch found by @Wolfii & @AkagitsuneYuki .

I did research about how the game moves a player into another room.
1) The player interacts with a door.
2) The Game checks if the player can enter the door.
3) The screen fades out
4) Once the screen faded completely out, the player gets moved into another room.

Think about those 4 steps and some alertbell should start ringing.
Need a hint? Where are you on Step 3?

Solution: While the screen fades out, we are still in the same room. This allows us to move in the room and interact with something before we get teleported into another room.
Good examples for this can be found in the DLC, but there are also some cases in the Normal Run where this could safe some seconds.

The Glitch is used within my current DLC Speedrun. 1:05 is a good timestamp since i use the Glitch there 2 times in a row.

https://youtu.be/AKcYeGYcv-k

Locked Room Skip Glitch Explained

This is a glitch that, in certain rooms, allow you to cut a few seconds off of your time. So far the rooms that are confirmed to work with this glitch are:

- Room 60
- Howards Loop (the looping hallway with the jump scare.)

This glitch is simple. When you are in a room with a locked door, spam E (or whatever the interact key is on your keyboard) on the door then go to the interaction needed to unlock the door. This is demonstrated in this video by AkagitsuneYuki:

https://youtu.be/DsW_R8tPtFw

I'm no expert on game coding, but using AkagitsuneYuki's explanation to how the room RNG works (https://www.speedrun.com/sjsm/thread/203f7) we can assume that locked rooms work something like this:

- Add 1 to the room count.
- If: room count is for a scripted room (monster spawns, elevators, etc.) go to scripted room.
	> else if: room count has a locked door:
		-spawn key object
			>if player interacts with locked door: check for key object
			>if player has key object: Add 1 to the room count
				-else lock door.

While this is functional, it leaves one big flaw: it doesn't stop checking the player for the key object. What this means is that in rooms that have a locked door that lead to the next room (scripted rooms that don't add to the room count aren't included), if you try to open the door before you have the object that allows you to open the door the game will constantly check your player if you have the key object (this can take many forms, such as the note spawn in Henry's loop) and once you have the key object it will act as if you had just interacted with the door. 

This is confirmed to work with the two rooms mentioned above, but it is possible that there are more rooms like this that can have seconds shaved off. Hope this helps!

Sticky Key Glitch Explained [Updated: 10/07/2018]

This is a "short" guide, what the "Sticky Key"-Glitch is and how it works^^

We all maybe already know it - if we press the Shift-Key 5 times on our keyboard, a window called "Sticky Key" tries to help us allowing to enable the feature with the same name. Especially since sprint in this game is located on exactly that key, the window maybe already occured to yourself + you probably already disabled it in the settings.

But - How can this feature actual be useful in the speedrun? Let's take a look to the game.
"Spooky's Jumpscare Mansion" or "Spooky's House of Jumpscares" is created in Gamemaker. In order to schedule several timed events in the game, there is a timer running inside of the process. The best example for the Timer would be the check, if you are to long afk (and Specimen 9 will spawn). Why i pick this thing? I will explain it below.

In order to know how long you are actually afk, the game requires to log that. Thats done with the timer. The timer is supposed to stop, when you pause the game. Makes sense, since nothing should happen if you are in the Pause-Menu + Specimen 9 can't kill you there.
Also: The game want to have your inputs. This should make sense, since the game need your mouse and keyboard strikes in order to know what you want to do. The game "locks" the mouse for that on the middle of the screen. If you now move the mouse, the game notices that, let you move/view ingame and set the mouse back to the middle of the screen.

Now we have Sticky Key: In order to leave the program, you need to Pause the game, so the timer stops and the game no longer cares abour Inputs. You can now freely move your Mouse and went into your browser or whatever.
But: What happens if we leave the game, without pausing it? Sticky Keys makes it possible. Once you open the feature while you are ingame (not in Pause) the Timer breaks b/c of your missing Movements. This causes the timer to speedup and skipping entire cutscenes, including the elevator.

The trick basically works with every program opening in the foreground without pausing the game. Using the Taskmanager or creating own hotkeys for that is also possible, making this trick reproduceable for every computer and OS the game runs on. I prefer "Sticky Keys" anyway, since pressing 5x Shift is pretty fast done, especially since you already have your finger on that key for sprint.


A short demonstration and setup can be found here:
https://youtu.be/C9hP3k46a2I




The final question that is now left: Why the Specimen 9 example? Let's think a second about it, do we miss something? The solution already is upper that line of text.

Solution:
We don't basically "skip" the cutscenes, we increase the timerspeed of the game using a bug everyone can use. The screenevents of the cutscene update after we interact with that, but basically: EVERYTHING in this game is faster until we are back on fokus of the window. Including Specimen 9.
While Specimen 9 can't spawn in the DLC, the glitch is unproblematic there. But on the normal game you need to be careful. You need to be long enough out of fokus to speedup the cutscene, but if you take to long to close the "Sticky Key" Window, Specimen 9 will spawn. Since the Timer also affects the Movement and Hit Speed from Specimen 9, you are basically instant dead once he spawns.

"Be careful with the power you have, it may enhance your run, but it can also break it".




====================

Update from 10/07/2018

It has been a while the discovery of the Sticky Key Glitch. Recently, the user @Lagloyavich revisited the glitch. As the glitch basically skipped time while the DLC "Kalamari Hospital" can't spawn Specimen 9, the glitch can be used to restore Stamina on a longer distance. This also counts for any visual skip besides Cutscenes, such as the Screenfade after you kill a monster (demonstrated in his current run on the monster "The Virus".

You can find his run here:
https://www.youtube.com/watch?v=Yj0-xqEJVAE

PureFallen

Wolfii

Spooky's Jump Scare Mansion

taudotexe

bunnychaos_

otomachiuna

Bad Ending

Good Ending

2.8 - 3.2

3.3+

Ending

Patch

Spooky's Jumpscare Mansion

We now have a spooky's speedrunning discord!

When to end the timer

How To Speed Up Game On Linux

Is Debug information via CheatEngine (or similar) allowed?

"infinite" stamina

How to know which path to take in chasms

AkagitsuneYuki

JDLM

Arkaphyr

sauce_dude

Heliotay

Oni_Ryo

Leondagreatest

Имя	Автор
[Karamari Hospital] Optimized Basement Staircase Movement	PureFallen 5 years ago
Ghosthand Glitch Explained	PureFallen 5 years ago
Locked Room Skip Glitch Explained	Wolfii 5 years ago
Sticky Key Glitch Explained [Updated: 10/07/2018]	PureFallen 5 years ago