User:Admin/Projects/OpenTibia/CustomEngine

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 including Lua and XML)
• Much simpler design, easier to use and understand, no unnecessary nested function calls, 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)