Welcome to the world of VirtualHome, an interactive platform that allows users to simulate complex household activities through simple programming. This guide will take you through the necessary steps to get started with VirtualHome, from installation to generating videos, along with troubleshooting tips to make your experience seamless.

Overview of VirtualHome

VirtualHome enables simulation of household activities by using programs (which represent the sequence of actions) and graphs (which define the environment where the activities occur). The simulator can generate videos or a sequence of graphs to show how the environment changes as these activities take place.

Setting Up VirtualHome

Let’s start with the setup process:

1. Install VirtualHome

Use the following command to install VirtualHome:

bash
$ pip install virtualhome

2. Download the Unity Simulator Executable

• Linux x86-64 version
• Mac OS X version
• Windows version

3. Test the Simulator

To ensure it works, double-click the downloaded executable or run it via your terminal:

bash
.path_to_exec -screen-fullscreen 0 -screen-quality 4

After launching the simulator, you can run the demo using the following command:

bash
cd demo
python generate_video.py

Generating Videos and Snapshots

You can create videos and snapshots of household activities using the Unity Simulator. Here’s how:

Generating Videos

To generate videos of the activities, execute:

bash
cd demo
python generate_video.py

Generating Snapshots

To create snapshots, run:

bash
cd demo
python generate_snapshots.py

This will generate a grid of snapshots saved in snapshot_test.png.

Using VirtualHome for Reinforcement Learning (RL)

VirtualHome can also be used as an environment for training RL agents. You can utilize the base class UnityEnvironment.

bash
cd demo
python test_unity_environment.py

Troubleshooting Common Issues

Here are some common issues you might face and how to resolve them:

• If the simulator doesn’t start, ensure you have installed the correct executable version for your OS.
• Check your Python environment; sometimes dependencies may be missing. Running pip install -r requirements.txt in the VirtualHome directory can help.
• If you encounter rendering issues, consider launching your simulation in windowed mode.

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Conclusion and Further Exploration

VirtualHome is an exciting platform that offers various capabilities, from simulating household activities to providing an environment for RL agents. By following the steps outlined above, you can set up and begin your journey with VirtualHome effortlessly.

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