An event triggered prior to action being executed.
Trigger for the action
the trigger, with or without parameters, for the action
Gets the trigger parameters
the trigger parameters
Skips to next active action
Adds action to chain of actions, may be a DoNothingAction
https://www.babylonjs-playground.com/#1T30HR#0
defines the next action to execute
The action passed in
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An event triggered prior to action being executed.