HOW TO USE:
Save Scenario.js in your game's scripts folder and add the line RequireScript("Scenario.js"); to the top of the script containing the function game.  Then, when you want to start a cutscene:

Code:

var Scene = new CutScene();
with (Scene) {
  //Call scenelets here...
}
Scene.execute();


Note: Scenario is designed for use with Sphere's built-in map engine.  It will not work with custom map engines.




Comment from tunginobi:

I can use synchronize() (damn that's a pain to type) to make sure any forks I made run before have finished:

Code:

beginFork();
  somethingLong();
endFork();
beginFork();
  somethingElse();
endFork();
synchronize();
bang();


This lets somethingLong() and somethingElse() run in parallel, and wait for both of those to finish before running bang().