Editing Ceiling glitch

From SmashWiki, the Super Smash Bros. wiki
Jump to navigationJump to search
Warning You aren't logged in. While it's not a requirement to create an account, doing so makes it a lot easier to keep track of your edits and a lot harder to confuse you with someone else. If you edit without being logged in, your IP address will be recorded in the page's edit history.
SmashBrosSymbol.svg Log in SmashBrosSymbol.svg Create account

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then publish the changes below to finish undoing the edit.

Latest revision Your text
Line 1: Line 1:
{{ArticleIcons|ssbm=y}}
{{ArticleIcons|ssbm=y}}
[[File:Ceiling Glitch.gif|thumb|{{SSBM|Fox}} using his jab, then immediately getting hit by {{SSBM|Falco}}'s {{b|Reflector|Falco}}, causing the glitch to occur.]]
The '''ceiling glitch''' (also '''invisible ceiling glitch''', known as '''Y-knockback-velocity-cancelling''' in Japan) is a [[glitch]] in ''[[Super Smash Bros. Melee]]'' that resets the victim's vertical knockback velocity to zero upon activation. Most commonly, this makes a character knocked upward appear to get hit by an invisible [[ceiling]], seemingly being [[stage spike]]d downward.


==How to Perform==
{{technical data}}
To activate the glitch, a player must hit a shielding opponent while on the ground, then become airborne before the recoil dissipates (jumping, sliding off a platform, getting launched by an attack, or using an attack that propels the fighter off the ground all work). If done correctly, the attacker will receive horizontal knockback, but no vertical knockback while airborne. It should be noted that the glitch lasts until the fighter touches the ground again on the left side of the stage, but only for a few frames on the right side (more specifically, as long as it should've taken for the recoil to finish).
 
[[File:Ceiling Glitch.gif|thumb|{{SSBM|Fox}} using his jab, then immediately getting hit by {{SSBM|Falco}}'s [[Shine]], causing the glitch to occur.]]
The '''ceiling glitch''' (also '''invisible ceiling glitch''', known as '''Y-knockback-velocity-cancelling''' in Japan) is a [[glitch]] in ''[[Super Smash Bros. Melee]]'' that resets the victim's vertical velocity to zero upon activation. Most commonly, this makes a character knocked upward appear to get hit by an invisible [[ceiling]], seemingly being [[stage spike]]d downward.


==Explanation==
==Explanation==
When a grounded character hits a [[shield]] with an attack, the character takes a small amount of knockback (also known as [http://smashboards.com/threads/physics-input-etc-display-in-develop-mode.391956/ attacker shield knockback velocity]), applying space between them and the shielding character. On the ground, this knockback is negated quickly due to [[traction]]. However, [[air friction]] is applied incorrectly to that knockback. While a character in the air has attacker shield knockback speed, a constant amount of that speed is decreased each frame. If the remaining speed is less than the amount of reduction per frame, then the speed supposedly resets to 0 instead. However, due to an error in the game's code, the vertical component of the character's normal knockback speed is set to 0 instead, while that of attacker shield knockback velocity is unchanged. As a result, if a character hits a shield and is knocked back before the attacker shield knockback has depleted, the ceiling glitch activates, and the character's vertical knockback speed is negated on the frame the attacker shield knockback should run out.
When a grounded character's attack hits a shield, the character takes a small amount of recoil force (sometimes known as [http://smashboards.com/threads/physics-input-etc-display-in-develop-mode.391956/ attacker shield knockback velocity]), helping put space between them and the shielding character. Normally, this force dies away quickly due to [[traction]]. However, if the character is damaged or somehow leaves the ground before the force completely dissipates, the game may not register that the force has expired. Until the character returns to a grounded state and the game can recognize that the force has ended, they remain under partial influence of it: the character's vertical velocity is set to zero if they get hit by something. As a result, there can be an extended period of time where the character reacts in unusual ways to attacks: purely vertical attacks cause them to stop dead in midair briefly, while attacks with a horizontal component will act as dangerous semi-spikes.
 
Notably, {{SSBM|Luigi}}'s extremely low traction allows him to easily perform the glitch without needing much precision from the opponent: if his attack deals enough damage, he can jump before he stops sliding after hitting the shield. Concurrently, Luigi is the easiest character for opponents to inflict the glitch on, though it depends on whether they can reach him.
 
==Extended Ceiling Glitch==
If a character has any amount of vertical attacker shield knockback velocity in the air, then due to the same bug, that vertical component never dissipates in the air. Thus in that case once the ceiling glitch activates, the bug continuously resets the characters vertical knockback to 0 each frame, making it impossible to knock that character up or down. Landing on stage still ends this extended ceiling glitch, as traction takes care of the remaining vertical attacker shield knockback.
 
A character can gain vertical attacker shield knockback velocity by taking to air from a slanted surface, or by having hit a shield from the left side. The application of air friction involves usage of trigonometric operations. When those operations are applied to leftward speed, miniscule imprecisions lead to a tiny distortion in the angle of the speed. A microscopic amount of downward speed gets added to previously purely leftward speed, leading to extended ceiling glitch.


==Uses==
==Uses==
Line 22: Line 15:
===Attacking player (Player B)===
===Attacking player (Player B)===
If the attacking player thinks their opponent does not recognize the glitch (or cannot react fast enough to do so), they can intend to strike player A's shield and take an out-of-shield vertical KO move for minimal knockback and much confusion; one prime example is Fox's up smash, which normally has strong KO power but would simply send player B across the stage's surface while the glitch is active. Similarly, if the glitch is active, [[meteor smash]]es that have no horizontal component will simply reset player B's velocity to zero instead of dealing knockback, which can cause player A to make the wrong move after the unexpected result. This particular scenario directly resulted in {{sm|S2J}} [https://www.youtube.com/watch?v=XuqFTiVr6Ac losing a set] to {{sm|Abate}} at [[The Big House 5]].
If the attacking player thinks their opponent does not recognize the glitch (or cannot react fast enough to do so), they can intend to strike player A's shield and take an out-of-shield vertical KO move for minimal knockback and much confusion; one prime example is Fox's up smash, which normally has strong KO power but would simply send player B across the stage's surface while the glitch is active. Similarly, if the glitch is active, [[meteor smash]]es that have no horizontal component will simply reset player B's velocity to zero instead of dealing knockback, which can cause player A to make the wrong move after the unexpected result. This particular scenario directly resulted in {{sm|S2J}} [https://www.youtube.com/watch?v=XuqFTiVr6Ac losing a set] to {{sm|Abate}} at [[The Big House 5]].
Notably, {{SSBM|Luigi}}'s extremely low traction allows him to abuse the glitch without needing input from the opponent: if his attack deals enough damage, he can jump before he stops sliding after hitting the shield. Concurrently, Luigi is the easiest character for opponents to inflict the glitch on, though it depends on whether they can reach him.


==Gallery==
==Gallery==
Line 28: Line 23:
File:Ceiling Glitch 2.gif
File:Ceiling Glitch 2.gif
File:SSBM Thunder Hit Downward.gif
File:SSBM Thunder Hit Downward.gif
Swordsman spike.gif|{{SSBM|Roy}} using the Swordsman spike on {{SSBM|Falco}}.
</gallery>
</gallery>


==External links==
==External links==
[https://www.youtube.com/watch?v=_WAZCVkox3I The glitch in action on Brinstar]<br>
[https://www.youtube.com/watch?v=_WAZCVkox3I The glitch in action on Brinstar]
[https://www.youtube.com/watch?v=-xLa0U9i-bk AsumSaus video about ceiling glitch]


[[Category:Glitches (SSBM)]]
[[Category:Glitches (SSBM)]]

Please note that all contributions to SmashWiki are considered to be released under the Attribution-ShareAlike 3.0 Unported license (see SmashWiki:Copyrights for details). Your changes will be visible immediately. Please enter a summary of your changes above.

Do not submit copyrighted work without permission!

Cancel Editing help (opens in new window)

Templates used on this page:

Retrieved from "https://www.ssbwiki.com/Ceiling_glitch"