Shared Damage

Shared Damage

Shared Damage is a Fabric mod that links player damage across the server.

If one player gets hurt, the rest of the affected players also take collateral damage.

It is built for chaos survival, challenge runs, cooperative punishment mechanics, and multiplayer content where every mistake matters.

By default, collateral damage cannot kill secondary players, so the mod stays dangerous without instantly wiping the whole group from one bad hit.

Highlights

• Shared damage across all online affected players
• No infinite collateral chains
• Secondary players can be protected from collateral death
• Armor, enchantments, effects, and mitigation can be respected
• Damage multiplier support
• Include and exclude damage type filters
• Cross-dimension support
• Client-side stacked HUD
• Vanilla actionbar fallback for players without the client mod
• English and Spanish language files
• Damage source aliases per language
• Permanent and temporary blacklist support
• Runtime on/off commands
• Config reload command

How It Works

When a player takes valid damage, the mod propagates that damage once to the rest of the affected players.

It does not create recursive damage chains.

That means:

• one original hit
• one propagation pass
• no infinite loops

Client And Server

This mod works as a gameplay mod on the server, with optional client-side enhancement.

If a player has the mod installed on the client:

• they get a custom stacked HUD
• repeated messages can stack as x2, x3, x4
• multiple lines can be displayed at once

If a player does not have the mod installed on the client:

• the shared damage system still works
• they receive vanilla actionbar feedback
• server-side fallback messages can still use color

Installation

Server

Install the mod on a Fabric server for the shared damage mechanic itself.

Client

Installing the same mod on the client is optional, but recommended if you want:

• stacked HUD messages
• repeated message grouping
• a cleaner visual feedback system

Dependencies

This mod requires:

• Minecraft 26.1.2
• Fabric Loader
• Fabric API
• Java 25

Recommended setup:

• install the correct Fabric Loader version for Minecraft 26.1.2
• install Fabric API
• place Shared Damage in the mods folder

If you want the custom HUD, install the mod on the client too.

Commands

• /shareddamage reload
  Reloads config and language files.

• /shareddamage on
  Enables shared damage and saves the new state to config.

• /shareddamage off
  Disables shared damage and saves the new state to config.

• /shareddamage toggle
  Switches shared damage on or off.

• /shareddamage status
  Shows whether shared damage is currently enabled.

• /shareddamage blacklist add <player>
  Permanently blacklists a player.

• /shareddamage blacklist add <player> <duration>
  Temporarily blacklists a player. Examples: 30s, 10m, 2h, 1d.

• /shareddamage blacklist remove <player>
  Removes a player from the blacklist.

• /shareddamage blacklist list
  Lists current blacklist entries.

Config

Main config:

• config/shareddamage.json

Language files:

• config/shareddamage/lang/en.json
• config/shareddamage/lang/es.json

Blacklist:

• config/shareddamage/blacklist.txt

Example Config

{  
"sharedDamageOn": true,  
"sharedDamageMode": "standard\_shared\_damage",  
"includedDamageTypes": [],  
"excludedDamageTypes": [],  
"collateralDamageMultiplier": 1.0,  
"minimumSecondaryHealth": 1.0,  
"enableClientFeedback": true,  
"maxActionbarLines": 3,  
"language": "en",  
"debugLogging": false,  
"printKnownDamageTypesOnStartup": true,  
"crossDimensionSharing": true,  
"affectGameModes": [  
"survival",  
"adventure"  
],  
"protectSecondaryPlayersFromCollateralDeath": true,  
"collateralDamageUsesVictimMitigation": true,  
"showOriginalPlayerName": true,  
"clientFeedbackMode": "actionbar",  
"syncConfigToClients": true,  
"reloadConfigCommandEnabled": true,  
"disabledDimensions": [],  
"logDamageEventsToConsole": false  
}  

Config Options

• sharedDamageOn
  Enables or disables the whole system.

• includedDamageTypes
  Damage types allowed to propagate.

• excludedDamageTypes
  Damage types blocked from propagation.

• collateralDamageMultiplier
  Collateral damage multiplier. Supports decimal values like 1.5.

• minimumSecondaryHealth
  Minimum health a secondary player can be left at from collateral damage.

• enableClientFeedback
  Enables actionbar or HUD feedback.

• maxActionbarLines
  Maximum number of stacked custom HUD lines. Range: 0 to 6.

• language
  Current message language. Default: en.

• crossDimensionSharing
  Allows damage to propagate across dimensions.

• affectGameModes
  Defines which game modes are affected.

• protectSecondaryPlayersFromCollateralDeath
  Prevents collateral damage from killing secondary players.

• collateralDamageUsesVictimMitigation
  Lets the secondary player's own armor, enchantments, and effects apply.

• showOriginalPlayerName
  Shows who triggered the shared damage message.

• disabledDimensions
  List of disabled dimensions.

Blacklist

Blacklisted players do not participate in shared damage.

That means:

• they do not trigger shared damage
• they do not receive shared damage

Temporary entries use the same blacklist.txt file and expire automatically.

Language Support

The mod ships with:

• en.json
• es.json

These files can be edited to customize:

• actionbar text
• command messages
• damage source aliases

Damage Alias Examples

"damage\_type.in\_fire": "fire",  
"damage\_type.on\_fire": "burning",  
"damage\_type.mob\_attack": "mob attack"  

"damage\_type.in\_fire": "fuego",  
"damage\_type.on\_fire": "quemadura",  
"damage\_type.mob\_attack": "ataque de mob"  

Good For

• challenge servers
• hardcore multiplayer runs
• SMP chaos events
• cooperative punishment mechanics
• content creator multiplayer series

Notes

• The default setup is meant to be punishing but still playable.
• By default, collateral damage does not kill secondary players.
• Installing the mod on the client gives the best feedback experience.