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CONTRIBUTING.md

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Code Stuff

  • We use C++03 with some C++11 extensions (ask if you think that something would be useful)
  • Use the provided wrappers for OS stuff:
  • Threading is done by inheriting from cIsThread, thread synchronization through cCriticalSection, cSemaphore and cEvent, file access and filesystem operations through the cFile class, high-precision timers through cTimer, high-precision sleep through cSleep
  • No magic numbers, use named constants:
  • E_ITEM_XXX, E_BLOCK_XXX and E_META_XXX for items and blocks
  • cEntity::etXXX for entity types, cMonster::mtXXX for mob types
  • dimNether, dimOverworld and dimEnd for world dimension
  • gmSurvival, gmCreative, gmAdventure for game modes
  • wSunny, wRain, wThunderstorm for weather
  • cChunkDef::Width, cChunkDef::Height for chunk dimensions (C++)
  • etc.
  • Instead of checking for a specific value, use an IsXXX function, if available:
  • cPlayer:IsGameModeCreative() instead of (cPlayer:GetGameMode() == gmCreative) (the player can also inherit the gamemode from the world, which the value-d condition doesn't catch)
  • Please use tabs for indentation and spaces for alignment. This means that if it's at line start, it's a tab; if it's in the middle of a line, it's a space
  • Alpha-sort stuff that makes sense alpha-sorting - long lists of similar items etc.
  • Keep individual functions spaced out by 5 empty lines, this enhances readability and makes navigation in the source file easier.
  • Add those extra parentheses to conditions, especially in C++
  • if ((a == 1) && ((b == 2) || (c == 3))) instead of ambiguous if (a == 1 && b == 2 || c == 3)
  • This helps prevent mistakes such as if (a & 1 == 0)
  • White space is free, so use it freely
  • "freely" as in "plentifully", not "arbitrarily"
  • All case statements inside a switch need an extra indent.
  • Each and every control statement deserves its braces. This helps maintainability later on when the file is edited, lines added or removed - the control logic doesn't break so easily.
  • The only exception: a switch statement with all case statements being a single short statement is allowed to use the short brace-less form.
  • These two rules really mean that indent is governed by braces
  • Add an empty last line in all source files (GCC and GIT can complain otherwise)
  • All new public functions in all classes need documenting comments on what they do and what behavior they follow, use doxy-comments formatted as /** Description */. Do not use asterisks on additional lines in multi-line comments.
  • Use spaces after the comment markers: // Comment instead of //Comment

Copyright

Your work must be licensed at least under the Apache license.

You can add yourself to the CONTRIBUTORS file if you wish.

PLUGINS ONLY: If your plugin is not licensed under the Apache license, then it must be compatible and marked as such. This is only valid for the plugins included within the MCServer source; plugins developed on separate repositories can use whatever license they want.