Difference between revisions of "User:Admin/Projects/OpenTibia/CustomEngine"

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As with my [[User:Admin/Projects/Open_Tibia/Otclient|otclient project]] I will avoid spilling any details, but the gist of it is:
 
As with my [[User:Admin/Projects/Open_Tibia/Otclient|otclient project]] I will avoid spilling any details, but the gist of it is:
 
* Smaller codebase (10% of TFS's sources without counting Lua and XML)
 
* Smaller codebase (10% of TFS's sources without counting Lua and XML)
* Much simpler design, easier to use and understand, no unnecessary nested function calls, complex objects and binary formats, etc
+
* Much simpler design, easier to use and understand, no unnecessary nested function calls, vague function names, complex objects and binary formats, etc
 
* Better performance in some areas
 
* Better performance in some areas
 
* Relies less on classes
 
* Relies less on classes

Revision as of 19:31, 20 February 2021

Core features

As with my otclient project I will avoid spilling any details, but the gist of it is:

  • Smaller codebase (10% of TFS's sources without counting Lua and XML)
  • Much simpler design, easier to use and understand, no unnecessary nested function calls, vague function names, complex objects and binary formats, etc
  • Better performance in some areas
  • Relies less on classes
  • No hardcoded data except for loading player. Map, monsters and items are all loaded from disk in known easy to understand and manipulate human-readable formats

Changelogs

Pre git

Not much documentation to go on... There's been tons of bugs, bug fixes and rewrites. Server has been fully rewritten 3 times due to early core design issues which has at this point been fully solved. Server version 1 had a lot of game mechanics working such as moving items, stacking items, use item -> replaces items such as torch, vials, etc, also in EQ and containers, but this server version had tons of core issues. Version 4 has less game mechanics, but great core design, also has use item -> replace item mechanic (doors, street lights, etc), but not for EQ or containers, no mechanic to open containers yet, etc.

Some documented pre-git changes/fixes:

  • Fixed /a 1 (player should walk, not teleport, this short distance)
  • Old memory leak fixed (design issue, fully replaced)
  • /save slotid command saves copy of character to slot n

A few more from memory:

  • Added loading of monsters, spawning and random walking
  • Game loop frequency can be adjusted in config and changed ingame with /gamefrequency command
  • Players and monsters can no longer walk through walls and other non-traversable objects
  • Instruments works, because music rocks :)

Other commands:

  • /a length
  • /z aid
  • /up
  • /down
  • /tp
  • /goto x,y,z
  • /reset (kicks and deletes character from memory, loading static player data on next login instead of saving on logout -> load saved data from memory on login as per default)
  • /save slotid (saves player data in memory to slotid = accountid)
  • /town name
  • /speed number (0 is max)
  • /flags number (set player flags)
  • /dump x,y,z (print map data on tile x,y,z)
  • /build list itemid (sends full data of item to player ingame)
  • /taint (defunct: marks tiles explored with persistent "taint" effect, was used to explore a weird persistent "silently drop connection" bug that's since disappeared)

Post git (Dec 30th 2020)

  • Multicore map loading - reduces map loading time by 300% when using 4 cores (Dec 30th 2020)
  • Maximally optimized map loading - 2x speed from last commit + 2x with -O1 (Jan 2nd 2021)
  • Fixed bug: random ~1% loss of tiles caused by unreliable C function (Jan 2nd 2021)
  • Fixed bug: ~5% chance of segfaulting during map load after introducing multicore map loading - only 1 known segfault bug left [easy fix] (Jan 3rd 2021)
  • Added tools: manual and automated networked map data analysis tool and objects.srv to json converter (Jan 14th 2021)
  • Made 1 core file/class independent of other code (Jan 15th 2021)
  • Added /taint command to explore strange "silently dropped connection" bug (Jan 21st 2021)
  • Got rid of persistent 6 months old "silently dropped connection" bug with still unknown origins (Jan 21st 2021)
  • Minor bug fix: logging out -> inbuf/outbuf error (Jan 25th 2021)
  • Minor documentation/tool feature (Jan 25th 2021)