minecraft-kajetans-mod/src/main/java/me/km/playerbank/ModNetHandlerPlayServer.java

package me.km.playerbank;

import me.km.KajetansMod;
import me.km.events.PlayerLeaveMessageEvent;
import me.km.snuviscript.ScriptEvents;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.network.NetHandlerPlayServer;
import net.minecraft.network.NetworkManager;
import net.minecraft.network.PacketThreadUtil;
import net.minecraft.network.play.client.CPacketAnimation;
import net.minecraft.network.play.client.CPacketChatMessage;
import net.minecraft.network.play.server.SPacketChat;
import net.minecraft.server.MinecraftServer;
import net.minecraft.util.text.ITextComponent;
import net.minecraft.util.text.TextComponentString;
import net.minecraft.util.text.TextComponentTranslation;
import net.minecraft.util.text.TextFormatting;
import net.minecraftforge.common.MinecraftForge;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class ModNetHandlerPlayServer extends NetHandlerPlayServer
{
    private static final Logger LOGGER = LogManager.getLogger();
    private final MinecraftServer serverController;
    private final ScriptEvents scriptEvents;

    public ModNetHandlerPlayServer(MinecraftServer server, NetworkManager nm, EntityPlayerMP p) 
    {
        super(server, nm, p);
        serverController = server;
        scriptEvents = KajetansMod.scripts.getEvent(ScriptEvents.class);
    }
    
    @Override
    public void processChatMessage(CPacketChatMessage packetIn) 
    {
        PacketThreadUtil.checkThreadAndEnqueue(packetIn, this, this.player.getServerWorld());
        if(packetIn.getMessage().startsWith("/"))
        {
            String s = packetIn.getMessage();
            int i = s.indexOf(" ");
            String command;
            String left;
            if(i == -1)
            {
                command = s.substring(1).toLowerCase();
                left = "";
            }   
            else
            {
                command = s.substring(1, i).toLowerCase();
                left = s.substring(i);
            }
            if(KajetansMod.scripts.isRegisteredScriptCommand(command))
            {
                if (this.player.getChatVisibility() == EntityPlayer.EnumChatVisibility.HIDDEN)
                {
                    TextComponentTranslation trans = new TextComponentTranslation("chat.cannotSend", new Object[0]);
                    trans.getStyle().setColor(TextFormatting.RED);
                    this.sendPacket(new SPacketChat(trans));
                }
                else
                {
                    this.player.markPlayerActive();
                    scriptEvents.onCustomCommand(this.player, command, left);
                }
            }
            else
            {
                super.processChatMessage(new CPacketChatMessage("/" + command + left));
            }
            return;
        }
        super.processChatMessage(packetIn);
    }
    
    @Override
    public void onDisconnect(ITextComponent reason)
    {
        LOGGER.info("{} lost connection: {}", new Object[] {this.player.getName(), reason});
        this.serverController.refreshStatusNextTick();        
        // Custom Leave Message - Start
        PlayerLeaveMessageEvent event = new PlayerLeaveMessageEvent(this.player, "No message was set.");
        if(!MinecraftForge.EVENT_BUS.post(event))
        {
            TextComponentString text = new TextComponentString(event.getMessage());
            this.serverController.getPlayerList().sendMessage(text);
        }
        // Custom Leave Message - End
        this.player.mountEntityAndWakeUp();
        this.serverController.getPlayerList().playerLoggedOut(this.player);

        if (this.serverController.isSinglePlayer() && this.player.getName().equals(this.serverController.getServerOwner()))
        {
            LOGGER.info("Stopping singleplayer server as player logged out");
            this.serverController.initiateShutdown();
        }
    }

    @Override
    public void handleAnimation(CPacketAnimation packetIn) 
    {
        super.handleAnimation(packetIn);
        scriptEvents.onArmSwing(this.player, packetIn.getHand());
    }
}