When playing on Death Canyon - Invasion Force, qbot suddenly went into an endless loop, rendering the game effectively frozen and pinning one CPU to 100%.

Philip did some investigation on irc:

[22:26:30] <@Philip`> quantumstate: qbot is looping infinitely, with a pattern of function entries like
[22:26:35] <@Philip`> (resources.js:25)
[22:26:38] <@Philip`> (resources.js:43)
[22:26:39] <@Philip`> repeating forever
[22:26:42] <@Philip`> (queue.js:15)
[22:26:44] <@Philip`> (plan-building.js:46)
[22:26:47] <@Philip`> (queue-manager.js:127)

I have attached my commands.txt which reproduces the problem 100% of the time.

Problem

GetAIsHelper::Run (in ICmpAIManager.cpp) and CAIPlayer::Initialise (in CCmpAIManager.cpp) disagree, how the json should be named. Because of GetAIsHelper::Run, every json file in the directory is interpreted as metadata for an AI. CAIPlayer::Initialise however requires it to be named "data.json".

This leads to a problem, if other .json files are in the directory. In my case, I have a tsconfig.json for Typescript-Configuration. I cannot use it for the metadata, because CAIPlayer::Initialise doesn't allow this, but if I make two files (data.json and tsconfig.json), GetAIsHelper::Run expects both files to be AIs.

Suggested Solution

CAIPlayer::Initialise already requires the name data.json. So GetAIsHelper::Run should only search for "data.json" to begin with.

Suggested Code Change

Old:

void GetAIsHelper::Run()

{

vfs::ForEachFile (g_VFS, L"simulation/ai/", Callback, (uintptr_t)this, L"*.json", vfs::DIR_RECURSIVE);

}

New:

void GetAIsHelper::Run()

{

vfs::ForEachFile (g_VFS, L"simulation/ai/", Callback, (uintptr_t)this, L"data.json", vfs::DIR_RECURSIVE);

}

Error Message

Much to our regret we must report the program has encountered an error.

Please let us know at ​http://trac.wildfiregames.com/ and attach the crashlog.txt and crashlog.dmp files.

Details: unhandled exception (Access violation writing 0x00000004)

Location: unknown:0 (?)

Call stack:

(error while dumping stack: No stack frames found) errno = 12 (Not enough memory) OS error = 487 (Tentative d’accès à une adresse non valide.)

Other Info

Running 0AD installed from current windows installer (r11863, win32) on a 16 GB ram computer, windows 7 64b, nvidia graphic card (up to date drivers).

This error seems random.