Can't directly run cpp files in lux-ai-2021 (ETXTBSY error)

[Desperationis]

So I've heard, you can run cpp files directly into lux-ai-2021. However, when I try to run it with my own bot, I get this error. https://pastebin.com/CQDev0Kw error in its entirety.

diego@adhoc:~/Desktop/LuxBot$ sudo lux-ai-2021 src/main.cpp src/main.cpp 

-=-=-=-=-=-=-=-=-=-=-=-| [INFO] match_QiUDBKVEPU7A |-=-=-=-=-=-=-=-=-=-=-=-
[INFO] (match_QiUDBKVEPU7A) - Design: lux_ai_2021 | Initializing match - ID: QiUDBKVEPU7A, Name: match_QiUDBKVEPU7A
Error: spawn ETXTBSY
    at ChildProcess.spawn (internal/child_process.js:403:11)
    at spawn (child_process.js:580:9)
    at Object.spawnWithSignal [as spawn] (child_process.js:717:17)
    at Object.spawn [as default] (/usr/local/lib/node_modules/@lux-ai/2021-challenge/node_modules/cross-spawn/index.js:12:24)
    at /usr/local/lib/node_modules/@lux-ai/2021-challenge/node_modules/dimensions-ai/lib/main/Agent/index.js:653:46
    at new Promise (<anonymous>)
    at Agent._spawnProcess (/usr/local/lib/node_modules/@lux-ai/2021-challenge/node_modules/dimensions-ai/lib/main/Agent/index.js:646:16)
    at Agent.<anonymous> (/usr/local/lib/node_modules/@lux-ai/2021-challenge/node_modules/dimensions-ai/lib/main/Agent/index.js:628:56)
    at step (/usr/local/lib/node_modules/@lux-ai/2021-challenge/node_modules/dimensions-ai/lib/main/Agent/index.js:46:23)
    at Object.next (/usr/local/lib/node_modules/@lux-ai/2021-challenge/node_modules/dimensions-ai/lib/main/Agent/index.js:27:53) {
  errno: -26,
  code: 'ETXTBSY',
  syscall: 'spawn'
}

I get this error when trying to run the v1.1.x branch of the cpp kit as well; Not sure what is causing it. It works fine when transpiled into JS. I've tried running the lux-ai-2021 command as sudo and not sudo, though it doesn't make a difference. Here's the exact main.cpp code I tried to run in simple/:

#include "lux/kit.hpp"
#include "lux/define.cpp"
#include <string.h>
#include <vector>
#include <set>
#include <stdio.h>

using namespace std;
using namespace lux;
int main()
{
  kit::Agent gameState = kit::Agent();
  gameState.initialize();

  while (true)
  {
    gameState.update();

    vector<string> actions = vector<string>();
    Player player = gameState.players[gameState.id];
    Player opponent = gameState.players[(gameState.id + 1) % 2];

    GameMap gameMap = gameState.map;

    vector<Cell *> resourceTiles = vector<Cell *>();
    for (int y = 0; y < gameMap.height; y++)
    {
      for (int x = 0; x < gameMap.width; x++)
      {
        Cell *cell = gameMap.getCell(x, y);
        if (cell->hasResource())
        {
          resourceTiles.push_back(cell);
        }
      }
    }

    int citiesToBuild = 0;
    for (auto it : player.cities)
    {
      City *city = it.second;
      if (city->fuel > city->getLightUpkeep() * (int) GAME_CONSTANTS["PARAMETERS"]["NIGHT_LENGTH"] + 1000)
      {
        citiesToBuild += 1;
      }
      for (auto citytile : city->citytiles)
      {
        if (citytile->canAct()) {
          // you can use the following to get the citytile to research or build a worker
          // actions.push_back(citytile.research());
          // actions.push_back(citytile.buildWorker());
        }
      }
    }

    for (int i = 0; i < player.units.size(); i++)
    {
      Unit unit = player.units[i];
      if (unit.isWorker() && unit.canAct())
      {
        if (unit.getCargoSpaceLeft() > 0)
        {
          // if the unit is a worker and we have space in cargo, lets find the nearest resource tile and try to mine it
          Cell *closestResourceTile;
          float closestDist = 9999999;
          for (auto it = resourceTiles.begin(); it != resourceTiles.end(); it++)
          {
            auto cell = *it;
            if (cell->resource.type == ResourceType::coal && !player.researchedCoal()) continue;
            if (cell->resource.type == ResourceType::uranium && !player.researchedUranium()) continue;
            float dist = cell->pos.distanceTo(unit.pos);
            if (dist < closestDist)
            {
              closestDist = dist;
              closestResourceTile = cell;
            }
          }
          if (closestResourceTile != nullptr)
          {
            auto dir = unit.pos.directionTo(closestResourceTile->pos);
            actions.push_back(unit.move(dir));
          }
        }
        else
        {
          if (player.cities.size() > 0)
          {
            auto city_iter = player.cities.begin();
            auto city = city_iter->second;

            float closestDist = 999999;
            CityTile *closestCityTile;
            for (auto citytile : city->citytiles)
            {
              float dist = citytile->pos.distanceTo(unit.pos);
              if (dist < closestDist)
              {
                closestCityTile = citytile;
                closestDist = dist;
              }
            }
            if (closestCityTile != nullptr)
            {
              auto dir = unit.pos.directionTo(closestCityTile->pos);

              if (citiesToBuild > 0 && unit.pos.isAdjacent(closestCityTile->pos) && unit.canBuild(gameMap))
              {
                actions.push_back(unit.buildCity());
              }
              else
              {
                actions.push_back(unit.move(dir));
              }
            }
          }
        }
      }
    }

    for (int i = 0; i < actions.size(); i++)
    {
      if (i != 0)
        cout << ",";
      cout << actions[i];
    }
    cout << endl;
    gameState.end_turn();
  }
  return 0;
}

[Desperationis]

Replays show nothing special. When run in the same seed as their JS counterparts, they result in the exact same behavior.

[Desperationis]

I've attached the simple bot I've been trying to compile below. The exact command I used was sudo lux-ai-2021 main.cpp main.cpp
simple.zip

I should mention that I'm on Linux Mint btw, so this error might not appear on Windows

[Desperationis]

After rigorous testing, I am more confused than I was before. I spammed that command on a specific seed for a single bot and it still failed every so often, meaning the chance of this issue occurring is completely random and not dependent on seed or the bot run. Wth

[StoneT2000]

The ETXTBSY error is unrelated to the game engine and is something else. Works fine on my machine. Please stay tuned to this thread, may ask you to test some things.

[StoneT2000]

Just making sure this isn't stale, is this still and issue @Desperationis ?

[Desperationis]

It's still a issue, not sure what's causing it. What I know for certain though is that running the lux-ai command multiple times on the same seed will eventually run the match

[StoneT2000]

Oh ok so this error means you are trying to modify an executable while it is already running which is a weird error.

[StoneT2000]

Do you by any chance have the executable file opened for some reason.

Additionally can you compile your C++ as you would and then execute from the command line yourself and not via lux ai (it should just hang)

[Desperationis]

No, I don't. In fact, even if I run the executable compiled with g++ wiht lux-ai, it has no effect on the behaviour

[StoneT2000]

@Desperationis Ok so this issue is not even consistently happening either, hard to reproduce, which leads me to think there's something up with your setup.

Can you tell me what node and npm version you are on and what linux mint version you are on?

I think worst case, use docker to run matches (we can provide a simple script for this) but hopefully that won't be necessary.

[Desperationis]

I'm running node v14.17.2 and npm v7.19.1 on Linux Mint Cinnamon Uma, though this happened on Ulyssa as well.