moxwel/minecraft_server_crossplay.md

## minecraft_server_crossplay.md

      
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              minecraft_server_crossplay.md
            
          
    #1 | Crossplay multi version compatible Minecraft Java and Bedrock server with GeyserMC


📚 Index


➡ minecraft_server_crossplay.md 


minecraft_server_luckperms.md 


minecraft_server_authme.md 


minecraft_server_easycommandblocker.md 


Using PaperMC as backend server (version 1.14.4) and Velocity as proxy with "modern" forwarding.
Tested on Exaroton and standalone.
Source: https://support.exaroton.com/hc/en-us/articles/4404724229137-Using-Minecraft-proxies-on-exaroton

Geyser only works with Java 16+. Paper 1.14.4 only works with Java 8. That's why is necessary to use a proxy in this case.

Check out Paper requirements. Geyser requirements and Floodgate requirements for more information.


TIP:
If you want to set up a Paper 1.16.5+ server, you can do all of this without proxy! Is so much easier.

Proxy (Velocity)


Plugins:

GeyserMC geyser-velocity.jar (crossplay support)
Floodgate floodgate-velocity.jar (java/bedrock linking)


🔀 /velocity/velocity.toml:
show-max-players = 10                     # Only visual.
online-mode = false                       # Depends on you.
player-info-forwarding-mode = "modern"    # Use this if using PaperMC.

[servers]                                 # Servers to forward.
main = "<address>:<port>"
try = ["main"]                            # First server to forward when player joins.

[advanced]
show-ping-requests = true                 # Show when clients ping the server.
announce-proxy-commands = true            # Necessary for tab autocomplete.


Your PROXY_TOKEN is in /velocity/forwarding.secret.


Server (PaperMC)


Plugins:

ViaVersion ViaVersion.jar (multi-version support)


ViaVersion permits newer Minecraft versions to join old Minecraft Server versions. For example: Minecraft 1.19-1.18-1.17 can join Minecraft 1.17 Server, but Minecraft 1.16 can't.


If you want older Minecraft versions to join newer Minecraft Server versions, you need ViaBackwards.


📃 /paper/spigot.yaml:
settings:
  bungeecord: false        # Must disable if using Velocity proxy with "modern" forwarding.
commands:
  send-namespaced: true    # "<plugin>:<command>" style commands.


📃 /paper/paper.yaml:
settings:
  velocity-support:           # Modify this section only if using Velocity proxy.
    enabled: true             # Enable this for "modern" forwarding.
    online-mode: false        # Must match proxy's online-mode configuration.
    secret: <PROXY_TOKEN>     # Paste your secret here.

In Paper 1.19+ those settings are located in /paper/config/paper-global.yml/.


📃 /paper/commands.yml:
aliases:
  icanhasbukkit:
  - []                        # Disable command.
  ?:
  - minecraft:help            # Vanilla-style help command.
  help:
  - minecraft:help            # Vanilla-style help command.


📃 /paper/server.properties:
online-mode = false           # Must disable if using proxy.


GeyserMC / Floodgate

These settings apply even if you aren't using proxy.


🔀 /velocity/plugins/geyser-velocity/config.yml:
remote:
  auth-type: floodgate                  # Tell Geyser to use Floodgate.

passthrough-motd: true                  # Use motd set in servrer/proxy.
passthrough-player-counts: true         # Use player count set in server/proxy.

show-cooldown: title                    # Show the MC 1.8 style cooldown to Bedrock players.
show-coordinates: true                  # Show coordinates to Bedrock players.
emote-offhand-workaround: "no-emotes"    # Let Bedrock players swap offhand items with emotes.


🔀 /velocity/plugins/floodgate/config.yml:
username-prefix: "."               # Prefix for non-linked Bedrock players.

If Bedrock player called Steve joins, they will be renamed as .Steve.


If your server is in online-mode=false, you may want to use a local database for linking data..


Extras

Geyser command alias


📃 /paper/commands.yml:
aliases:
  advancements:
  - geyser advancements
  offhand:
  - geyser offhand


Aikar's Flags

Add these Java arguments for Minecraft Server (PaperMC):
-XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:G1NewSizePercent=30 -XX:G1MaxNewSizePercent=40 -XX:G1HeapRegionSize=8M -XX:G1ReservePercent=20 -XX:G1HeapWastePercent=5 -XX:G1MixedGCCountTarget=4 -XX:InitiatingHeapOccupancyPercent=15 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem -XX:MaxTenuringThreshold=1 -Dusing.aikars.flags=https://mcflags.emc.gs -Daikars.new.flags=true

Source: https://docs.papermc.io/paper/aikars-flags
Exaroton plugin

Use if your proxy and backend servers are hosted in Exaroton. It can be installed on proxy only. This is optional.


🔀 /velocity/plugins/exaroton/config.toml:
[auto-start]
enabled = false                          # Enable/Disable.
servers = ["example.exaroton.me:port"]   # Servers will autostart when proxy is online.

[auto-stop]
enabled = false                          # Enable/Disable.
servers = ["example.exaroton.me:port"]   # Servers will stop when proxy is shut down.


Local Floodgate linking database

Use this when using online-mode = false on server/proxy.
Must install SQLite Floodgate plugin to work: download floodgate-sqlite-database.jar inside /velocity/plugins/floodgate/ folder. DO NOT PUT IT IN /velocity/plugins/.


🔀 /velocity/plugins/floodgate/config.yml:
player-link:
  enable-own-linking: true        # Enable local database.
  allowed: true
  link-code-timeout: 60           # Only 1 minute to link account for security.
  type: sqlite
  enable-global-linking: false    # Disable online database from Floodgate servers.

Linking data will be on linked_players.db file inside /velocity/plugins/floodgate/.


Anti X-Ray configs

Apply this inside world configs on each dimension. Read this.

Overworld:

anticheat:
  anti-xray:
    enabled: true
    engine-mode: 2
    hidden-blocks:
    - copper_ore
    - deepslate_copper_ore
    - raw_copper_block
    - diamond_ore
    - deepslate_diamond_ore
    - gold_ore
    - deepslate_gold_ore
    - iron_ore
    - deepslate_iron_ore
    - raw_iron_block
    - lapis_ore
    - deepslate_lapis_ore
    - redstone_ore
    - deepslate_redstone_ore
    lava-obscures: false
    max-block-height: 64
    replacement-blocks:
    - chest
    - amethyst_block
    - andesite
    - budding_amethyst
    - calcite
    - coal_ore
    - deepslate_coal_ore
    - deepslate
    - diorite
    - dirt
    - emerald_ore
    - deepslate_emerald_ore
    - granite
    - gravel
    - oak_planks
    - smooth_basalt
    - stone
    - tuff
    update-radius: 2
    use-permission: false

Nether:

anticheat:
  anti-xray:
    enabled: true
    engine-mode: 2
    hidden-blocks:
    - ancient_debris
    - bone_block
    - glowstone
    - magma_block
    - nether_bricks
    - nether_gold_ore
    - nether_quartz_ore
    - polished_blackstone_bricks
    lava-obscures: false
    max-block-height: 128
    replacement-blocks:
    - basalt
    - blackstone
    - gravel
    - netherrack
    - soul_sand
    - soul_soil
    update-radius: 2
    use-permission: false

End:

anticheat:
  anti-xray:
    enabled: false
Hearts below name

Run the commands below.
/scoreboard objectives add health_score health "§c❤"

/scoreboard objectives setdisplay belowName health_score

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