Is there any way for this to be done?

You need to use the chat event.

 

Question on the colors below peoples names on this forum.  What do the colored boxes below the rank mean?  I notice you have 3 green and are relatively new to the forum, not sure how that gets picked.

 

 

Here is an example.  The format code stuff is wrong.  It is before I converted to 1.7.2.  I don't have the right material on this comp.  Also, you would have to cahnge this to match your intent.  However, it is the framework.

 

 

 

 

    @SubscribeEvent

    public void onServerChatReceivedEvent(ServerChatEvent event) {

   

        // make sure a player is involved

        if (event.player != null) {

       

        // Declare player

            EntityPlayer player = (EntityPlayer) event.player;

 

            if (player != null) {

                           

                // Cancel the event

                event.setCanceled(true);

               

                // Cycle through players and send the chat

                List players = MinecraftServer.getServer().getConfigurationManager().playerEntityList;

 

                for (int i = 0; i < + players.size(); i++) {

               

                    // Get the player

                    EntityPlayer target = (EntityPlayer) players.get(i);

                   

                    // send the chat

String chattxt = "§3<" + world_name + "> §" + color + "[" + player.getDisplayName() + "]" + " §f" + event.message + pvp;

                    target.addChatMessage(new ChatComponentTranslation(chattxt));

                   

                }

               

            }

           

        }

       

    }

 

 

 

I put this in the mod class

 

@SubscribeEvent
public void onServerChatReceivedEvent(ServerChatEvent event) {

	// make sure a player is involved
	if (event.player != null) 
	{
		// Declare player
		EntityPlayer player = (EntityPlayer) event.player;

		if (player != null) 
		{
			// Cancel the event
			event.setCanceled(true);

			// Cycle through players and send the chat
			List players = MinecraftServer.getServer().getConfigurationManager().playerEntityList;

			for (int i = 0; i < + players.size(); i++) 
			{
				// Get the player
				EntityPlayer target = (EntityPlayer) players.get(i);

				// send the chat
				if(target.getDisplayName().contains("Player"))
				{
				String chattxt = EnumChatFormatting.RED + "[" + EnumChatFormatting.YELLOW + "Weapons+ Developer" + EnumChatFormatting.RED + "]" + player.getDisplayName() + event.message;
				target.addChatMessage(new ChatComponentTranslation(chattxt));
				}
			}
		}
	}
}

 

But it doesnt seem to work

You would then need to register your mod class as that event.

 

#Note: Use the MinecraftForge bus.

Thx it worked!! 

I can't make this code work (obviously) in 1.12.2

Please, can someone update it?

I really need it for my mod.

 

Thanks

Please make your own thread, this one is 4 years old and long dead.