Tech: Difference between revisions

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'''Tech''', sometimes called '''techniques''', are special moves [[Madeline]] can do to enhance her mountain-climbing ability. They come in a wide range of uses and difficulties. Many can be used to skip sections of a room or multiple rooms at once. There are a lot of tech in ''Celeste'' and their variations, so it is virtually impossible to describe them all.

'''Note:''' Some higher-level and more obscure tech (like 7jumps) may be missing, improperly named, or poorly described, so do not expect 100% accuracy or comprehensiveness. If you notice any issues, inaccuracies, or typos, please let us know by reporting them on the [[{{TALKPAGENAME}}|talk page]] or [[Special:EditPage/Tech|fixing them yourself]]. This way, you get to improve Celeste Wiki for future readers, and we appreciate your help in making the wiki more complete!

Some other (possibly more extensive) sources of tech:

These "techs" were added primarily to make the game feel smoother and more forgiving, but they can be taken advantage of.

Attempting to perform an action that's not currently possible will "buffer" (store) the input for the next 5 frames. If it becomes possible within those 5 frames, Madeline will instantly perform it. For example, if you press jump slightly before landing on the ground, Madeline will jump on the first possible frame. This is notably used to execute tech instantly after a screen transition or to turn frame-perfect tricks into 5-frame windows. It can be done with almost every action in the game.

=== Liftboost ===

Liftboost, rather than a tech, is a basic game mechanic. When being moved by an entity like a [[Zippers|Traffic Block]], the amount it moves you is stored as a value called liftboost. When letting go of the moving entity, your speed gets set to your liftboost value. There is a maximum value for liftboost, which is -130 for vertical velocity and 250 in the moving direction for horizontal velocity. When jumping, liftboost is added to your jump speed, so the maximum vertical speed for a jump with liftboost is -235 and the maximum horizontal speed is 355.

Other actions, such as hypers, supers, and dashes, apply liftboost the same way a jump does. The speed calculation for a hyper is (260+liftboost)*1.25 horizontal and (-105+liftboost)*0.5 vertical, so liftboost is applied slightly differently to hypers than to other actions.

[[File:Ultra.gif|thumb|240px|Ultra]]

'''Demodashes''' (shortened to demos), also known as '''crouch dashes''' in-game, is a tech that allows the player to dash with the crouched hurtbox (4 pixels instead of 9), allowing you to slip through [[spinners]], [[dust bunnies]], and other obstacles unharmed, provided the gap between them is at least 4 pixels.

'''Wallbounces''' are a tech mainly used to gain height. To do a wallbounce, dash up and jump during the dash duration while next to a wall. It is to be noted that wallbounces have a slightly lower vertical speed than an updash. Thus, jumping as late as possible is more optimal for gaining height.

Dashless Tech refers to tech that don't need a dash to perform. They tend to be more complex or precise.

=== 5jump ===

When Madeline grabs the top of a wall, she will slide down a significant amount and not be able to climb up further. However, you still can climbjump or wallkick off the top of the wall. A 5jump is executed by using a neutral climbjump to reach the top of the wall and then jumping or climbjumping off it. This tech allows you to cross a 5-tile gap, hence its name.

==== 6jump ====

A '6jump' is a dashless cornerboost that travels over 6 tiles, typically over spikes. This is done by being at full air-strafe speed (90) and doing a cornerboost on the top of a wall to gain another +40 speed. It must be done in the first room of Crossing for the [[Winged Golden Strawberry]] in dashless [[Forsaken City|City]].

{{Ambox|type=content|text=This section lacks information about spikejumps off moving blocks. Please take a moment to improve this section.}}

Wind applies a constant movement to Madeline every frame, however, this movement is applied independently of her regular speed calculations and after collision checks occur. As a consequence, it is possible to jump off surfaces beneath spikes before collision checks are applied.

Entity Tech refers to using various blocks or [[entities]] to do useful techs.

=== Explosion Boost ===

Explosions caused by pufferfishes, bumpers, or reviving seekers grant Madeline some momentum. If you're holding the same direction Madeline is boosted towards, you gain about 50 extra horizontal speed.

=== Fish / Iceball / Oshiro / Seeker / Snowball Jump ===

Holding jump when bouncing off the top of something ([[Oshiro]], snowballs, pufferfish, [[seeker]]s, or ice balls in vanilla) grants a significant amount of height compared to not pressing jump, and if dashed into will also preserve any horizontal momentum as the bounce will cancel the dash. For this reason, dashing horizontally onto one of these entities and jumping is sometimes referred to as a "fish super", "snowball super", and so on, despite mechanically not being related to a superdash.

If the game considers you grounded while in a bubble, you can hyperdash or superdash out of the bubble. Once you leave the ground, for 5 frames, you are in "coyote time" when the game still considers you to be on the ground. By entering a bubble and inputting a hyper or a super within this 5-frame window, you will gain the speed boost as well as keep your dash from the bubble, even if the bubble is mid-air.

=== Archie ===

An '''Archie''' is entering a bubble with a crouched hitbox (from any direction), raising it by two pixels. This is usually performed with a demodash, but can also be done simply using a crouch jump. Archies are possible because bubbles center your hitbox when entered, hence you will be higher up if you enter the bubble with a smaller crouching hitbox.

=== Core Hyper/Super ===

Core blocks give coyote frames before disappearing at the end of their launch, and a hyper/super can be performed during coyote time. The speed from this is combined with the large amount of horizontal liftboost granted by the core block, causing core hypers to give high amounts of speed.

You can jump out of [[dream blocks]] since they give coyote frames. The jump grants height along with the +40 horizontal speed granted by ground jumps. To execute it, simply press jump as you leave the dream block. This tech is taught by the [[bird]] in the {{ch|2B|lf=1}}.

You can double jump out of dream blocks by buffering a first jump in the dream block and jumping a second time in coyote frames after exiting it. Although this doesn't grant additional height compared to a regular dream jump, it does give an additional horizontal speed gain of 40, making it almost as fast as a hyper (320 speed compared to 325).

Instead of simply jumping out of dream blocks, a hyper or a demohyper (which has a slightly bigger window) can be done in the few frames right after you leave the dream block due to coyote frames. This grants 325 horizontal speed and halved jump height, identical to a regular hyperdash. Unlike dream jumps, dream hypers do '''not''' give your dash back, as it is used after exiting the dream block.

You also can do a superdash out of a dream block, though this has less practical use than dream hypers or a dream double-jump.

If you move horizontally along the ground in a feather and perform a jump, you will exit the feather state and perform a long jump. Despite the name, feather supers bear no mechanical relation to superdashes.

[[File:Jelly Regrab.gif|thumb|A Jelly Regrab|240px]]

Grabbing a [[Theo Crystal]] or a [[Jellyfish]] in a dash state cancels it, which makes you maintain your vertical and horizontal speed. You can do a regrab even if you're already holding a throwable: to do so, throw it and quickly dash and grab into it. This can be useful if a small amount of height or distance is needed. Theo Regrabs are more challenging than Jelly Regrabs.

You can use this tech to move upwards indefinitely by dropping and regrabbing the jellyfish, though it has few practical uses and is quite inconsistent.

You can also use the regrab mechanic to cancel a grounded ultra, cancelling a dash without losing any speed at the end.

Throwing a jellyfish or Theo crystal grants Madeline 80 speed in the opposite direction it is thrown. This can be exploited by turning around briefly and throwing the throwable backwards, granting the speed bonus in the forwards direction.

<u>'''Note:'''</u> Throwables appear to give more height the later they are grabbed. This is not due to a difference in the amount of momentum preserved from canceling the dash but simply due to Madeline being higher up when it is actually canceled. [[Theo crystal]]s provide less height than jellyfish since holding a jellyfish lowers Madeline's gravity.

Reform Tech is tech done with blocks that will disappear and respawn at their initial position, like [[cassette blocks]] and moving blocks, while they are reforming.

The block will not become solid if Madeline is in it and will instead start reforming once she leaves the block. The block becomes solid before spikes and other entities on the block are generated (except on cassette blocks, which reform instantly), enabling Madeline to grab onto normally spiked walls of the reforming block, or land on the reforming block even if its floor is spiked.

If you are near the top of a cassette block when it reforms, your position will be snapped upwards, placing you on top of it. By jumping as this happens, the sudden vertical movement is added, granting a considerably higher jump. The jump input cannot be buffered.

A Cassoosted Fuper is getting a cassette boost as you perform a feather super. This is a joke tech, primarily mocking the Celeste communities' culture of making portmanteaus out of tech names.

To reduce strain on the game, when the player uses {{Tooltip|binos|entities to preview the screen}}, the game will unload spinners not currently visible, allowing Madeline to dash or even walk through them safely until they load back in. To do this, look in the binos, move them away enough to unload the spinners, and then quickly leave and dash through them.

When unpausing the game, there is a short window in which the game has not started yet. Inputting during this period up to 6 frames (notably longer than the standard 5-frame buffer window) before the game starts will make the input occur on the first frame of the game running. This allows you to input a movement command as well as another pause command, effectively making the game run one frame at a time, making frame-perfect techs significantly easier to perform.

Spinners only gain collision when within a certain distance of Madeline, and they check whether they are in this distance every third frame. By pausing on the frame this check occurs, the check is skipped, keeping the spinner uncollidable. This can be chained to keep spinners nonlethal for arbitrarily long time periods. Critically, this check has a pseudo-random offset on each spinner, effectively separating all spinners into three groups, only one of which may be stunned. While humans have performed spinner stunning, it is generally considered a TAS-only tech as each pause is frame-perfect, and without using hitboxes it is impossible to tell which group is being stunned. Lightning can also be stunned in the same manner as described above.

(Note that spinners are made uncollidable rather than unloaded - they are still loaded as usual, just unable to kill Madeline.)

==== Spinner Freeze ====

[https://youtu.be/FHAuZJC6HaA?t=1620 The 100% TAS uses this tech when obtaining the heart in 6A.]

Kermit Dashing is a very rarely forced tech. Dashing through a screen transition cancels your dash, but does not remove the 'dashattack' timer which allows Madeline to do 'dash actions' like [[Wallbounces|wallbounce]], breaking blocks, and entering [[Dream Blocks|dream blocks]], sometimes callled kermit wallbounces and so on. The 'dash direction' of a cancelled dash is also maintained. For example, this lets you activate a [[Kevin]] from angles not usually possible or for preserving your dash. This is used in the "True ending" from Ivory in [[Strawberry Jam Collab]].

* The Demodash is named after the player DemoJameson, who discovered the tech on October 14, 2018.

[[Category:Tech| ]]