Added Simulation Interfaces Demo Script

[ayushgnv]

Warehouse Simulation Interfaces Demo Overview

• Setup: Initializes ROS2 and connects to simulation backend (IsaacSim/O3DE/Gazebo)
• Load world: Loads warehouse environment with table and colored cubes
• Spawn robots: Places Dingo mobile robot and UR10 arm in the scene
• Iteration 0: Spawns 3 cardboard boxes, Dingo pushes obstacle_box_0_1 in -X direction
• Iteration 1: Spawns 3 new cardboard boxes, Dingo pushes obstacle_box_1_1 in +Y direction
• Iteration 2: Spawns 3 new cardboard boxes, Dingo pushes obstacle_box_2_0 in +X direction
• Each iteration: UR10 arm moves to different joint positions while box pushing occurs
• Box pushing: Dingo positions behind target box and pushes 0.5 meters with continuous monitoring
• Robot repositioning: Moves Dingo to final location after each pushing task completes
• Cleanup: Stops simulation and unloads world when all iterations finish

@iche033 @jhanca-robotecai @adamdbrw to check

[jhanca-robotecai]

The script works correctly on O3DE (I did not test it with other simulators). The content of the script was reviewed independently in other PRs. The code might need some polishing, but it should be done in separate PRs.

The only problem I face is that O3DE sets the UR10 arm in 0 position (for all joints) when the simulation is in other state than "playing:. The method move_cubes_and_step_sim moves small cubes above the robotic arm. When the simulation starts, the cubes are bounced away from the scene by the robotic arm:

This problem should be fixed in a separate PR if we decide to fix it. I believe it is a good demonstration of the differences between simulators that are independent from interfaces.

[jhanca-robotecai]

You might want to add a comment about the command line arguments:

--sim-backend isaacsim
--sim-backend o3de
--sim-backend gazebo

[jhanca-robotecai]

This part of your script is not described in your PR description.

Btw. the PR description could go to the README file to explain what can be done with the script.

[adamdbrw]

I think it is an interesting difference which we don't necessarily need to fix for the talk. Not covered by the standard but important for portability / co-sim.

[iche033]

The method move_cubes_and_step_sim moves small cubes above the robotic arm. When the simulation starts, the cubes are bounced away from the scene by the robotic arm

I added this function to show case setting entity state. I noticed the difference in behavior afterwards. The UR10 initial joint configuration is different between the simulators. I've now changed the UR10 configuration in Gazebo to match O3DE and Issac Sim. In Gazebo, the cubes now gently bounce off the arm

[jhanca-robotecai]

This PR might be closed after #3 was merged