TAS
Master the TAS (Tool-Assisted Speedrun) feature in KRX Client for Teeworlds. Learn how to record, replay, and optimize inputs for precision movement in DDNet maps, with auto-save and path visualizatio
Last updated
Master the TAS (Tool-Assisted Speedrun) feature in KRX Client for Teeworlds. Learn how to record, replay, and optimize inputs for precision movement in DDNet maps, with auto-save and path visualizatio
Last updated
The TAS (Tool-Assisted Speedrun) tab in the KRX Client Ultimate version provides a comprehensive suite for recording, replaying, and manipulating precise sequences of inputs, primarily for creating optimized runs on DDNet (DDraceNetwork) maps.
Important Prerequisite: /showall
For TAS playback and recording to correctly interact with map entities (weapons, pickups, shields, hearts, etc.), you must ensure all entities are rendered before starting a TAS session on a server. There are two ways to do this automatically:
Console: Press F1 and type cl_run_on_join "showall 1" (requires quotes).
DDNet Settings: Go to Settings -> DDNet -> Miscellaneous and add showall 1 to the "Run on join" field.
Failure to do this will likely result in TAS replays desyncing or behaving incorrectly around map entities.
(Note: Tutorial provided by m4zty, may not reflect the absolute latest UI but covers core concepts).
(Note: Screenshot may slightly differ from the latest version).
TPS (Ticks Per Second) (krx_tastps): Adjusts the simulation speed of the TAS world. Default Teeworlds TPS is 50. Lower values slow down the simulation, allowing for more precise input timing during recording.
Pause (Hotkey: Pause): Toggles pausing/unpausing the TAS world simulation. Essential for frame-by-frame input.
Playback Replay (Hotkey: Load): Starts/stops playing back the currently selected replay file in the main game world.
Record Replay (Hotkey: Record): Starts/stops recording your inputs into the current replay buffer.
Clear Replay (Hotkey: Clear): Clears the current replay buffer and respawns your character at the start position within the TAS world.
Rewind (Hotkey: Rewind): Moves backward through the recorded replay buffer tick by tick (or by Ticks steps).
Forward (Hotkey: Forward): Moves forward through the recorded replay buffer tick by tick (or by Ticks steps). Useful for reviewing or reaching a specific point after rewinding.
Enable Sound (krx_tasusesound): Enables playback of supported sound effects (jumps, weapon fire, etc.) within the TAS world simulation.
Enable Effects (krx_tasshoweffects): Enables rendering of supported visual effects (grenade explosions, muzzle flashes, etc.) within the TAS world simulation.
Show Real Aim (krx_tasshowaim): During replay playback (Load), makes the character visually aim according to the directions recorded in the replay, rather than following the mouse.
Predict Players (krx_tasplayerprediction): Includes other players currently on the server in the TAS world simulation. Useful for TASing interactions but increases complexity.
Auto Replay (krx_tasautoreplay): Automatically restarts the loaded replay when it finishes.
On Freeze (krx_tasautoreplayfreeze): Automatically restarts the replay if your character enters a freeze state during playback.
Kill (krx_tasautoreplaykill): Automatically sends /kill at the end of a successful replay playback cycle (useful for restarting runs quickly).
Auto Save Replay (krx_autosavereplay): Automatically saves the current replay buffer periodically to the replays/auto/ directory while recording.
Interval (krx_autosavereplayinterval): Sets the auto-save frequency in seconds.
(Configure these keybinds in the main Settings tab or via console)
Record: toggle krx_recordreplay 1 0
Load: toggle krx_loadreplay 1 0
Clear: +toggle krx_tasrespawn 1 0 (Hold key to stay at spawn after clearing)
Pause: toggle krx_taspause 0 1
Rewind: +toggle krx_tasrewind 1 0 (Hold key to continuously rewind)
Forward: +toggle krx_tasforward 1 0 (Hold key to continuously forward)
Folder Button: Opens the main replay folder (%APPDATA%/krxclient.xyz/replays/). Replays are typically saved in subfolders named after the map.
Replay Selection: Dropdown menu to select a saved replay file (*.tas) from the currently viewed map's folder or the main replays folder.
Reload Button: Refreshes the list of available replays in the selection dropdown.
Load Replay Data: (Formerly "Enter" / "Continue") Loads the selected replay file's input data into the TAS buffer and initializes the TAS world to the replay's starting state. Does not start playback.
Validate Replay: Simulates the loaded replay internally and compares the resulting positions tick-by-tick against the positions saved within the replay file (if available). Useful for checking if a replay desyncs due to game updates or inconsistencies.
Save Replay: Opens a popup dialog allowing you to name and save the current replay buffer to a .tas file, typically within a folder named after the current map.
Replay Vault Auto Sync: (krx_tasreplayvaultautosync) Automatically checks for and downloads updates to the community replay vault from GitHub when the client starts.
Sync Now: Manually triggers a sync with the replay vault.
(Features for fine-grained control during TAS creation)
Ticks (krx_tastickcontrolticks): Sets the number of ticks the Forward and Rewind hotkeys jump per press (default: 1).
Auto Rewind (krx_tasautorewind): Automatically rewinds the replay to the last safe tick before entering a freeze state. Triggered automatically upon freezing while recording.
Auto Forward (krx_tasautoforward): Automatically fast-forwards through a freeze state in the recording to the first tick after becoming unfrozen. Useful for quickly skipping freeze waits.
Auto Pause (krx_tickcontrolpause): Automatically pauses the TAS simulation after an Auto Rewind or Auto Forward action completes.
Step (krx_tickcontrolstep): Modifies the Forward and Rewind hotkeys to only advance/retreat exactly one tick per press, regardless of the Ticks setting. Allows precise frame-by-frame input.
(Modify aiming data within the replay for aesthetic purposes)
Mode (krx_tas_fake_aim_mode): Selects the type of fake aim to apply (Robot Aim, Spinbot, Random, Smooth).
Add Fake Aim (krx_tas_fake_aim): Applies the selected fake aim mode to the current replay buffer. It modifies the m_TargetX/m_TargetY values only on ticks where aiming input is not strictly necessary for the recorded movement (e.g., not during the exact tick of firing or hooking).
Robot Aim: Keeps the aim static between essential actions.
Spinbot/Random: Replaces non-essential aim inputs with spinning/random values.
Smooth: Interpolates aim direction smoothly between essential aim input ticks.
Draw Start/End Pos (krx_tasdrawstartendpos): Renders visual markers (tees) at the starting and ending positions of the loaded replay.
Draw Replay Path (krx_tasdrawpath): Renders the positional path recorded in the currently loaded replay file.
Segmented (krx_tasdrawpathsegmented): If enabled, only draws a small segment of the path ahead of the current playback position. If disabled, renders the entire path.
Mode (krx_tasdrawpathmode): Selects the rendering style (Dotted, Full Line).
Color (krx_tasdrawpathcolor): Sets the color of the replay path line/dots.
Draw Prediction Path (krx_tasdrawpredictionpath): Renders predicted future paths for characters within the TAS world simulation while recording.
Mode (krx_tasdrawpredictionpathmode): Selects rendering style (Dotted, Full Line).
Local Color (krx_tasdrawpredictionpathcolor): Color for your tee and dummy's prediction path.
Frozen Color (krx_tasdrawpredictionpathcolorfrozen): Color used for the prediction path when a character is predicted to be frozen.
Other Color (krx_tasdrawpredictionpathcolorothers): Color used for the prediction paths of other players (if Predict Players is enabled).
Why don’t I see weapons/shields/hearts/etc. in the TAS world?
You most likely forgot to enable /showall before starting the TAS. Use cl_run_on_join "showall 1" in the F1 console or the equivalent DDNet setting to automate this. Also ensure Settings -> DDNet -> Antiping -> Predict weapons is enabled.
Why can’t I continue my TAS run after a map change?
TAS state is not preserved across map changes. You must stop recording, save your replay, manually change to the correct map (e.g., on a local server or different online server), load the replay data, and then continue recording from the end point.
Why did my TAS replay desync or fail mid-run?
Desyncs usually happen due to network lag affecting the precise timing needed for TAS playback, or complex map features not perfectly predicted by the client (e.g., random teleporters, intricate stoppers). Solution: Increase cl_prediction_margin significantly (e.g., 200+) in the F1 console before playback. This helps buffer against network jitter. If it still fails, the map might have elements inherently unreliable for TAS, or server-side checks might be interfering.
Why can’t I move when I start recording TAS?
Check if TAS is paused (toggle with the Pause hotkey). Also, ensure the krx_tasrespawn command (bound to Clear hotkey) is not being held down, as holding it prevents movement.
