How is Delta Time different from Scene Time in Simulation Nodes?
Scene time - how much time in frames or seconds, has passed since the beginning of the animation.
Delta time - how much time has passed, in seconds, from the last evaluation (last frame).
Delta time is a typical value used in simulations and game loops independent of fps, for example I used it here, named
def brain(dt, memory, gps):
You could implement delta time yourself by reading the scene time, passing it to sim output and subtracting current scene time from the previous scene time.