Appendix C — Cheat Sheet

Every Event and Action Push Lab - Discovery Workshop uses, with what it does in one line, in Myth’s own words.

C.1 Events

Command Pressed: Runs once when the selected Button Command matches its Single, Double, or Triple Press pattern.
Create: Runs once when an instance is created.
Custom Event: Runs when another action or script triggers the selected named custom event.
Data Table Changed: Runs once for each change to the selected Data Table, at the end of the step it happened in: a cell set, a row added or removed, the table reset or sorted, or a saved game loaded.
Destroy: Runs when an instance is destroyed.
Focus Lost: Runs once on the first step after the game loses the player’s input focus (the player switches to another window or tab).
Mouse Held: Runs once per game step while the selected mouse button is held anywhere in the game view.
Mouse Press: Runs once when the selected mouse button is newly pressed anywhere in the game view.
Mouse Release: Runs once when the selected mouse button is released anywhere in the game view.
Mouse Wheel: Runs when the mouse wheel scrolls up or down over the game.
Recurring Timer: Runs each time the named recurring timer comes due.
Step: Runs every game step while the instance exists.
Touch Cancelled: Runs once when the device cancels a touch in progress (for example a system gesture or an incoming call), before that touch’s Mouse Release and Mouse Released on Object in the same step, so a cut-off touch can cancel what it was doing.
Variable Changed: Runs once, at the end of a step, after the selected Global Variable changes value.

C.2 Actions

Apply Impulse: Applies one mass-aware impulse, optionally off-center so an object with Allow rotation also spins.
Attach to Parent: Attaches this instance to the nearest live instance of one selected parent Object.
Change Component Value: Changes one mutable Object Component value through its direct path.
Change Variable: Changes one declared variable: a Local Variable of this Logic (private to this Logic Component, or to this call of a Function), a Per Instance Variable of the targeted Object (self.name), a Changeable Shared Variable (@self.name, @Guard.name: one value for every instance of that Object), or a Global.
Check Data Row Exists: Checks whether the Data Table has that row.
Check Exists: True when Applies To still names at least one live instance: a named result (an empty set, or one whose instances were destroyed, is false), an Instance Parameter, or an Instance Output of a Function call.
Control Data Row: Adds or updates one Data Table row, or removes it.
Control Sound: Plays, loops, crossfades, or stops one selected Sound resource.
Create Instance: Creates one instance at world XYZ, Self-relative XYZ, or an exact named Coordinate, optionally with a starting rotation, scale and launch speed, and names it (Variable Name).
Declare Variable: Brings a Local Variable into existence.
Detach from Parent: Keeps this instance at its current world transform, removes its runtime parent, and restores ordinary physics.
Else: Runs the Else action.
Execute Script: Executes one Script resource in the current event context, with recursion and call-depth guards.
For Each Row: Runs its child stack once for each row of a Data Table.
If: Runs its Then branch when its Condition is true.
Load Persistent Value: Reads a device-persisted value, or the Default if none is stored yet, and publishes one typed Action result.
Open Persistent Values File: Opens a file picker for a .mythvalues file and stores its values (filtered by Key Prefix) as persistent values.
Repeat: Runs its vertical child stack Count times.
Reset Data Table: Restores a Data Table to exactly what was authored in the editor, discarding every runtime change.
Restart Game: Restarts the complete game from its configured start scene.
Return: Ends this run here.
Save Persistent Value: Writes one device-persistent value under one title-scoped key.
Save Persistent Values To File: Downloads a small .mythvalues file holding the chosen persistent values.
Set Data Cell: Writes one cell of a Data Table row (the live game copy, not the authored resource).
Set Instance Set: Replaces what an Instance Set (made by Make Instance Set, or an Instance Set Variable) holds, for example with what the Create just before it made.
Set Position: Moves the target immediately to a world position, an Object-local offset, a named Coordinate, or a Transform bounding-box anchor.
Set Rotation: Sets the exact planar rotation in degrees.
Set Spin: Sets how fast the object is turning, in degrees per second.
Set Velocity: Sets the exact horizontal velocity, vertical velocity, or both.
Set Visible: Sets visible for the target or game.
Set Z Order: Sets the exact Z Order used to sort this instance.
Start Recurring Timer: Starts or restarts one saveable named recurring timer.
Switch Mode: Sets the Event to One at a time and turns on only the selected Mode.
Trigger Custom Event: Broadcasts one named Custom Event to matching Custom Event listeners.
Trigger Custom Event on Object: Sends one named Custom Event to the selected Object instance without broadcasting it to unrelated Objects.

C.3 Reading Values From Tables

data('table', row, 'column'): the value in one cell: the row by its name or number, the column by its name.
dataFind('table', 'column', value): the number of the first row whose column holds this value.
dataCount('table'): how many rows the table has.