Hello,

I am getting a lot of boost::interprocess_exception::library_error errors with my custom environment. I've read a little bit about the boost managed_shared_memory class, but I don't quite see how to determine exactly what the problem is or how to work around it.

The error seems to get thrown at random. Sometimes I can go 100 iterations without issue, sometimes it comes up right away. I am writing a whole image to the semaphore using a 4096 int array. That does work, except sending a large array seems to make the problem more likely to occur. If instead of sending a 4096 byte array I send one byte, the problem doesn't usually come up.

I added a bit more print statements and found that the error happens either when sending the action data or reading the observation data. The program will print these exception messages and then either segfault or hang.

I wonder if there is some issue where both processes try to access the object in memory at the same time? Might be less likely with the examples which all send state as a few bytes.

I will share my code for training a 3D vehicle using Google Dreamer V2 once I get it working. If anyone has any insight it would be appreciated. Thank you!

Hi I see this error quite often: (every minute or two)

handle_crash: Program crashed with signal 11 do you know what is causing this? and how to avoid\solve it?

I was able to compile and run GodotGymAI successfully on my system (Ubuntu 18.0, Python 3.8) using Godot 3.1, but it crashes for Godot 3.2. Specifically, in Godot 3.2 the shared memory module throws the following exception when I call the getFloatArray() function:

"Dynamic exception type: boost::interprocess::interprocess_exception std::exception::what: No such file or directory"

Awesome project! I believe there is a small typo with "shows" here: https://github.com/lupoglaz/GodotGymAI/blob/f55e245dbb344c2febefc7a9787b8bedc11e4c36/docs/tutorial.html#L132

Cheers!

Hi I download godot version 3.2 from https://github.com/godotengine/godot/archive/3.2-stable.tar.gz and I'm trying to compile I get this error In file included from modules/GodotSharedMemory/cSharedMemory.cpp:3:0: modules/GodotSharedMemory/cSharedMemory.h:5:10: fatal error: core/object/reference.h: No such file or directory #include "core/object/reference.h"

any idea how to solve it?

Compilation-> Fixing some tyeps errors plus removing "set_mouse_in_window", which is not anymore supported by godot.

MoonLander-> Fixing Landing detection and force Lander object to be wake up all the time. (Removing bugs in movement of Lander.)

Hello,

Thank you for sharing the code. It works well.

I find it is too slow to send the image frame as an observation value by using the Float, Int type. Therefore, I add the Uint type to send the PoolVector as an observation value.

I add my own environment and README file under the Tutorials/DogdeCreepTut folder.

Thank you

My Project Settings don't seem to have Physics > Common > Timestep > Method. Any guidance would be appreciated!

Godot version: Godot Engine v3.2.3.stable.custom_build.31d0f8ad8

Hello!

Very happy to see an OpenAI gym connector! I discovered that this does not compile with the latest Godot, so I have been working on the necessary changes. I've got a commit here with some of the changes necessary, and I wanted to share it.

https://github.com/tlalexander/GodotAIGym/commit/e6a85eaa807347c190fdae984eeef94d8f70e362

My remaining issues as far as I'm able to see right now seem to be related to changes in the Godot String class.

modules/GodotSharedMemory/cSharedMemory.cpp: In member function 'void cSharedMemory::sendIntArray(const String&, const Vector<int>&)':
modules/GodotSharedMemory/cSharedMemory.cpp:100:25: error: 'const class String' has no member named 'c_str'
  100 |  std::wstring ws = name.c_str();
      |                         ^~~~~
modules/GodotSharedMemory/cSharedMemory.cpp: In member function 'void cSharedMemory::sendFloatArray(const String&, const Vector<float>&)':
modules/GodotSharedMemory/cSharedMemory.cpp:116:25: error: 'const class String' has no member named 'c_str'
  116 |  std::wstring ws = name.c_str();

The method c_str has changed to get_data but also returns a different type. So if you just change the affected c_str calls (only those attached to the Godot String class) to get_data, you get a new error:

odules/GodotSharedMemory/cSharedMemory.h:80:46: error: conversion from 'const char32_t*' to non-scalar type 'std::wstring' {aka 'std::__cxx11::basic_string<wchar_t>'} requested
   80 |           std::wstring ws = sem_name.get_data();

Seems pretty solvable but I've got to head to work and take a break on this so I thought I would share my progress! I'm not sure if some of my other changes were appropriate, but I'll keep testing! I know I can run an old version of Godot if I get stuck but I thought it would be nice to contribute. If anyone sees this and has some ideas please let me know. Thanks!

I ran into some issues when trying to set this up on my machine so I made some changes to the setup.py in order to make this more accessible to new users. The changes include:

• Always delete the libtorch folder and extract libtorch.zip. I had the problem that the setup.py failed silently after cleaning the git repository since there was an empty libtorch folder. This lead to libtorch.zip not being extracted. This is fixed by deleting the folder each time setup.py runs. Also this makes sure there are no old files left in case the value of url was changed. I think the few seconds needed to extract the file is nothing compared to how long this script runs.
• On some operating systems python is not available but is called python3 so I added a check for that.
• Install the python module as user because it would fail without sudo.
• Added libtorch to gitignore because this was showing up as 1000+ untracked files.