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#summary Description and list of engine error codes
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= Engine error codes =
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When the Hedgewars engine (`hwengine`) crashes or is closed, it returns an exit code (or error code) which can be used to further analyze the problem.
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== List of engine error codes ==
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This is the list of all possible error codes:
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|| *Exit code* || *Meaning* || *Description* || *Solution* ||
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|| 0 || No error || Engine exited normally || N/A ||
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|| 51 || Usage error || The engine was launched with invalid command line arguments || Check your command-line arguments. Type `hwengine --help` in a command line for help ||
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|| 52 || Fatal error || Generic error for critical errors. Commonly happens when a critical file like an image was not found, but other reasons are possible || Check the error message or the end of `Logs/game0.log` in your [http://hedgewars.org/wiki/User_directory user directory] for clues ||
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|| 53 || Startup error || Failure while initializing stuff on startup, like graphics, shader, OpenGL stuff, etc. || Check your [Dependencies dependencies] and if you have the latest video drivers installed and update them as needed ||
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|| 54 || Fatal error, no IPC socket || Similar to error 52, but the IPC socket is not working for some reason || Check the end of `Logs/game0.log` in your [http://hedgewars.org/wiki/User_directory user directory] for clues ||
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|| 55 || Video encoding error || Happens when a video recording is being encoded, might be an initialization or file access error || Check the end of `Logs/rec0.log` in your [http://hedgewars.org/wiki/User_directory user directory] for more information ||
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|| Other || Free Pascal run-time error, see [https://www.freepascal.org/docs-html/user/userap4.html here] || This is probably a bug. Or it might be a problem in your system. || If you believe this is a bug, [http://www.hedgewars.org/bugs report a bug], then someone should fix it ||
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== Error codes when performing engine test cases ==
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When the engine is used to perform [EngineTestCases test cases], the follwing additional codes are used:
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|| *Exit code* || *Meaning* || *Solution* ||
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|| 0 || Test succeeded || N/A ||
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|| 60 || Test failed || Fix the engine ||
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|| 61 || Lua error in test case || Fix the Lua code of the test case ||
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|| 62 || Unexpected error while testing || Debug ||
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= Source code =
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The exit codes are defined in the source code file [https://hg.hedgewars.org/hedgewars/file/tip/hedgewars/uConsts.pas hedgewars/uConsts.pas].
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