Is it possible to use the StateFunction command to changing of the states of the object depends on the state of the reverser handle? For example if I want to make the headligts to switch on, when I switch te reverser to forward.

Yes, use the variable handlereverser. It is equal to -1 when backward, 0 when neutral, and 1 when forward.

Example:

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StateFunction = handlereverser == 1

causes state 1 to be displayed when reverser is forward, state 0 in other cases.

this variable exists (at least in 1.0.4.1, maybe before) but is not documented in the .animated object format documentation, as are

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handlepowernotch
handlebrakenotch
handleairbrakenotch
handleholdbrake
handleemergencybrake
handleconstspeed
mainreservoir
equalizingreservoir
brakepipe
brakecylinder
straightairpipe
atcstate (if ATC is switched on, 0 when not transmitting or between 1 and 11 depending on speed restriction, 12 if ATC is switched off)

timetable (=0 if custom timetable is visible, else -1)

Thanks, it worked. But if I declare an animated object as a state of an other animated object, then is says, that the extension is not supported.

May I point out that none of the variables listed by Emmanuel Vallois are official. They may be present internally to achieve some internal functionality, but are not meant to be used externally. Please see http://openbve.trainsimcentral.co.uk/develop/object_animated.html for a full list of functions the animated objects are meant to support.

If there is interest in querying other variables than available, there is a simple solution: Say so, and support might be introduct in a future version.

There may be a rough way to "guess" the reverser state.

(speedometer>0)-(speedometer<0)
Returns:
1 - Forward
0 - Neutral
-1 - Backward

But it is stupid as it returns 0 when train stopped and return 1 or -1 if reverser suddenly changed to Neutral...

michelle wrote:none of the variables ... are official

Suitable functions were introduced, documented and added in Openbve v1.1.0.0 (released later). For those still interested, they are documented at:

• http://openbve.trainsimcentral.co.uk/develop/object_animated.html

The variable "reversernotch" is probably the one that is desired.

I known that already, and please look at the dates of our posts...

alvinwong: it's great to have the confirmation that you know. Others may not know, and it is for their benefit (and particularly for anyone arriving after searching the web) that it is useful to include a followup covering the outcome and a pointer regarding how to use the newly enabled functionality.