pbio/virtual/physics: Avoid simulation on read.

We'll stick to simulating on actuation only.

This was causing the simulation to call itself recursively if simulation was called on short intervals.

This was preventing the robot from working with the normal wall clock or a fuzzy counting clock.

Author: laurensvalk

lib/pbio/cpython/pbio_virtual/physics/simulation.py

@@ -152,10 +152,5 @@ def get_output_at_time(self, time, tolerance):
             ratio = (time - self.times[i - 1]) / (self.times[i] - self.times[i - 1])
             return self.outputs[:, i - 1] + ratio * (self.outputs[:, i] - self.outputs[:, i - 1])
 
-        # If time is farther into the future than our tolerance, simulate up
-        # to the given time. Otherwise we avoid simulating negligible time.
-        if time > self.times[-1] + tolerance:
-            self.simulate(time)
-
         # Return latest available data.
         return self.outputs[:, -1]