CelesteTAS

TAS tools for Celeste / Everest

License: MIT

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• Install Everest if you haven't already.
• (Recommended) Use the 1-click installer here. (Alternatively) Download the latest auto-build.
• Make sure the mod is enabled in the in-game mod options.
• Enable the mod-setting Celeste TAS > More Options > Launch Studio at Boot. Celeste Studio, our input editor, should now automatically launch. (You can find the Studio documentation here)
• Alternatively, you can start Celeste Studio directly. It'll be installed in the CelesteStudio directory inside your Celeste install.
• You can find the most up-to-date input files here.

Documentation

You can find documentation around CelesteTAS and Celeste Studio, as well as general TASing references on the wiki.
If you want to contribute to tooling documentation or TASing references, feel free to edit the wiki!

Input File

The input file is a text file with tas as a suffix, e.g. 1A.tas.

Format for the input file is (Frames),(Actions)

e.g. 123,R,J (For 123 frames, hold Right and Jump)

Available Actions

• R = Right
• L = Left
• U = Up
• D = Down
• J = Jump / Confirm
• K = Jump Bind 2
• X = Dash / Talk / Cancel
• C = Dash Bind 2 / Cancel Bind 2
• Z = Crouch Dash
• V = Crouch Dash Bind 2
• G = Grab
• H = Grab Bind 2
• S = Pause
• Q = Quick Restart
• F = Feather Aim
  • Format: F, angle, optional upper limit of single axis (default value is 1, range is 0.26 to 1, works in all analog modes)
• O = Confirm Bind 2
• N = Journal / Talk Bind 2
• A = Dash Only Directional Modifier (generally used to manipulate camera with binocular control storage. eg: 15,R,X,ALU)
• M = Move Only Directional Modifier (eg: 15,X,AL,MR)
• P = Custom Button Press Modifier (used to press inputs added by mods after binding them using the Set command, e.g. 15,R,X,PA after binding A to a custom input)

Controls

While in game or in Studio:

• Start/Stop Playback: RightControl
• Restart Playback: Equals
• Fast Forward / Frame Advance Continuously: RightShift or Controller Right Analog Stick
• Fast Forward to Next Comment: RightAlt + RightShift
• Slow Forward: \
• Pause / Frame Advance: [
• Pause / Resume: ]
• Toggle Hitboxes: LeftControl + B
• Toggle Simplified Graphics: LeftControl + N
• Toggle Center Camera: LeftControl + M
• Save State: RightAlt + Minus
• Clear State: RightAlt + Back
• Info HUD:
  • While holding the Info HUD hotkey, left-click to move the HUD around
  • Double press the Info HUD hotkey to toggle it
  • While Holding the Info HUD hotkey, left-click on entity to watch the entity
• These can be rebound in Mod Options
  • You will have to rebind some of these if you are on a non-US keyboard layout.
  • Binding multiple keys to a control will cause those keys to act as a key-combo.

Special Input

Breakpoints

• You can create a breakpoint in the input file by typing *** by itself on a single line
• The TAS, when played back from the start will fast-forward until it reaches that line and will then pause the TAS
• ***S will make a savestate, which can reduce TAS playback time.
• You can specify the speed with ***X, where X is the speedup factor. e.g. ***10 will go at 10x speed, ***0.5 will go at 0.5x speed.

Commands

• Various commands exist to facilitate TAS playback. Documentation can be found here.

Savestate

• Savestates require the SpeedrunTool mod.
• Reliable in vanilla maps.
• Savestates may not work properly in custom maps that use code mods. Placing a savestate right before leaving a room can help with this.
• Currently, cannot savestate when paused.
• Crashes due to running out of memory are possible, although uncommon.

Misc

Move Camera

When center camera is enabled, free camera hotkey + holding mouse right button or free camera hotkey + arrow move canvas, when zooming out holding mouse right button or info hud hotkey + arrow move camera.

Zoom Camera

When center camera is enabled, scroll wheel or free camera hotkey + home/end zoom camera.

Reset Camera

When center camera is enabled, double press mouse right button or double press free camera hotkey reset camera.

Rectangle Selection Info

Hold the Info HUD hotkey and the mouse right down to select a rectangle. Copies the position of the top left and bottom right corners when the mouse button is released. This helps to define checkpoints for Featherline.

Other Useful Tools

• TAS Recorder: High quality fixed framerate TAS encoder, cross-platform (use this instead of .kkapture or ldcapture)
• GhostMod: Compare new TASes with old ones.
• Radeline: Chaos monkey that optimizes a Celeste TAS by randomly (or sequentially) changing inputs.
• Lobby Router: Helps find the fastest route for a collab lobby
• Featherline: Algorithm for analog feather movement in Celeste. (built-in into Studio)
• .kkapture: High quality fixed framerate TAS encoder, Windows only.
• ldcapture: High quality fixed framerate TAS encoder, Linux only.