ActionGraph node "On Playback Tick" not working properly

[federico.domeniconi]

I’m using the ActionGraph node On Playback Tick. I need the output time, the documentation says The global playback time in seconds but the time is cycling and repeating the same values every 3 or 4 seconds. Is it the expected behaviour? How can I get the time within the ActionGraph?

[cgrebeld]

That is the animation time, when it reaches the end of the frame range it loops to beginning. If you want your local system time you could likely a script node.

[davide.silvestri]

In my case i was able to use “On Tick” node that holds also the “Absolute Simulation Time(seconds)”.

Alternatively with the “Script Node” with for example the following code one may obtain a similar result:

def setup(db):
state = db.internal_state
state.num = 0

def compute(db):
state = db.internal_state
state.num = state.num+db.inputs.delta_sec
db.outputs.my_output_attribute = state.num

I found also that in the isaac sim core nodes there is an “Isaac Read Simulation Time” which did not show an updated time when starting the playback.

I had both omni.isaac.core and omni.isaac.core_nodes extensions enabled and autoloaded.

Here is my tests log which appears to be passing all single ongs tests but failing at the end:

test.log (23.5 KB)