I wonder how I can use the code to start and stop animations and how to switch between them.

Can someone please explain it?

I found this and tried, but failed:

state.onStart = function (trackIndex)
   print(trackIndex.." start: "..state:getCurrent(trackIndex).animation.name)
end
state.onEnd = function (trackIndex)
   print(trackIndex.." end: "..state:getCurrent(trackIndex).animation.name)
end
state.onComplete = function (trackIndex, loopCount)
   print(trackIndex.." complete: "..state:getCurrent(trackIndex).animation.name..", "..loopCount)
end
state.onEvent = function (trackIndex, event)
   print(trackIndex.." event: "..state:getCurrent(trackIndex).animation.name..", "..event.data.name..", "..event.intValue..", "..event.floatValue..", '"..(event.stringValue or "").."'")
end

And what are the parameters in the following code are for? I can't find any documentation on this. Any help welcome!!!

state:setAnimationByName(0, "drawOrder")
state:addAnimationByName(0, "jump", false, 0)
state:addAnimationByName(0, "walk", true, 0)

What are the zeros for and what other parameters can I use here?

Is there a list of possible state: usages?

Thank you for your help!

Daniela