Modified ClassiCube clients could break/place blocks in any distance even if clickdistance is too small to do it

This is a high-level tracking document for all the features wanted/needed before the v1.0 ProjectObsidian Release:

• Finish CPE spec
• Netcode improvement / rewrite
• Command system improvement / rewrite
• Module system improvement / rewrite
• Classicube integration improvement / rewrite
• Pip library management system
• Server tick management system
• World backup system
• NPC entity library
• Custom block library
• Implement smple perlin noise world generation
• Implement notchy world generation
• World loading from SAV file
• Improve user experience for module devs
• Separate "core" module to allow barebones server
• "First-time setup" system
• Installable version of the server
• New README page
• Basic instructions on module development ???

Classic Protocol Extension: Top Level Support Tracking

This is the tracking issue for the top-level implementation of CPE (Classic Protocol Extensions)

Extensions

• ClickDistance
• CustomBlocks
• HeldBlock
• EmoteFix
• TextHotKey
• ExtPlayerList
• EnvColors
• SelectionCuboid
• BlockPermissions
• ChangeModel
• EnvWeatherType
• MessageTypes
• PlayerClick
• LongerMessages
• FullCP437
• BlockDefinitions
• BlockDefinitionsExt
• BulkBlockUpdate
• TextColors
• EnvMapAspect
• EntityProperty
• TwoWayPing
• InventoryOrder
• InstantMOTD
• ExtendedBlocks
• FastMap
• ExtendedTextures
• SetHotbar
• SetSpawnpoint
• VelocityControl
• CustomParticles
• CustomModels v2
• ExtEntityTeleport

Total Support: 18/33

I can't join the obsidian development server with my main account D_Flat. With a quick offline setup I noticed it's the underscore that get me kicked automatically.

if not username.isalnum():
    raise ClientError("Invalid Character In Username")

This should be changed to something like:

if not username.replace("_", "").isalnum():
    raise ClientError("Invalid Character In Username")

(or probably something cleaner with a function that checks for valid usernames).

Welcome

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This is a top level thread for all discussions about the new experimental_netcode branch.

and make it configurable via server properties

... and mabye option to kick for too much pps

Currently, there is no limit for packets per second