examples: interactive_play.py - segmentation fault

Habitat-Lab and Habitat-Sim versions

Habitat-Lab: master Habitat-Sim: stable (installed via conda)

❓ Questions and Help

I am trying to get the example code to run if I run python examples/interactive_play.py I am getting a Segmentation fault error.

Fatal Python error: (pygame parachute) Segmentation Fault

Current thread 0x00007f8cffe50340 (most recent call first):
  File "/home/Pia/anaconda3/envs/habitat-36/lib/python3.6/site-packages/habitat_sim/simulator.py", line 615 in draw_observation
  File "/home/Pia/anaconda3/envs/habitat-36/lib/python3.6/site-packages/habitat_sim/simulator.py", line 400 in get_sensor_observations
  File "/home/Pia/Development/manipulation/habitat-lab/habitat/tasks/rearrange/rearrange_sim.py", line 368 in step
  File "/home/Pia/Development/manipulation/habitat-lab/habitat/tasks/rearrange/actions.py", line 68 in step
  File "/home/Pia/Development/manipulation/habitat-lab/habitat/core/embodied_task.py", line 303 in step
  File "/home/Pia/Development/manipulation/habitat-lab/habitat/tasks/rearrange/rearrange_task.py", line 48 in step
  File "/home/Pia/Development/manipulation/habitat-lab/habitat/tasks/rearrange/rearrange_pick_task.py", line 144 in step
  File "/home/Pia/Development/manipulation/habitat-lab/habitat/core/env.py", line 267 in step
  File "examples/interactive_play.py", line 127 in step_env
  File "examples/interactive_play.py", line 248 in get_input_vel_ctlr
  File "examples/interactive_play.py", line 297 in play_env
  File "examples/interactive_play.py", line 376 in <module>
Aborted (core dumped)

The error arises in line 292 of interactive_play.py, when the variable step_results is set. The error seems to be related to the renderer. The segmentation fault finally happens in line 615 of habitat-sim/simulator.py (last stable version) self._sim.renderer.draw(self._sensor_object, self._sim).

Any idea how to fix this, or whether I am something is missing? Thank you very much!

A little side information: If I comment the following lines in interactive_play.py

screen = pygame.display.set_mode(
            [draw_obs.shape[1], draw_obs.shape[0]]
)

and create the scene within the while loop (just for debugging here)

screen = pygame.display.set_mode([640, 512])   # new line added
screen.blit(draw_obuse_ob, (0, 0))

I can see the rendered output in the first iteration of the while loop, but the segmentation fault error appears again in the second iteration of the while loop, when step_result is computed.

If I use the last stable version of habitat-lab, the interactive_play.py script runs, however the shown output is black and the terminal outputs repetitively the following two lines:

W0721 20:14:02.845535 15000 PhysicsManager.cpp:248] ::addObject : simpleObjectHandle : new_obj_viz
W0721 20:14:02.845551 15000 PhysicsManager.cpp:251] ::addObject : newObjectHandle : new_obj_viz_:0000

[Stefuniverse]

Hi, we are using this repo for a project at university and one of my project partners found, that you can start the example by installing an earlier pygame version.

pip install pygame==1.9.6

I am not sure, if this could be a final solution for this issue, because I am not sure of the implications of using this earlier version but it can at least be a workaround for you.

[guhur]

@Stefuniverse’s solution is working for me! Thanks