I'm trying to change the players speed from the server. I am sending a packet to the client that does Minecraft.getMinecraft().player.capabilities.setPlayerWalkSpeed(.15f); But it only changes the FOV and it seems inverted. I thought maybe it was a problem with the way I was sending the packet to the client but it does the same thing when I set the speed from the client. In singleplayer it works fine. Is there a better way I can set the speed from the server? I don't want to use potion effects.

Edited August 4, 20196 yr by ZephaniahNoah

8 hours ago, ZephaniahNoah said:

Is there a better way I can set the speed from the server?

Try adding a modifier to the speed attribute.

I already tried that. It gets reset when the player sprints.

EDIT: I mean, it works. But is reset when the player sprints.

Edited August 3, 20196 yr by ZephaniahNoah

15 minutes ago, ZephaniahNoah said:

I already tried that. It gets reset when the player sprints.

Show what you tried.

Packet Handler:

Spoiler

package com.zephaniahnoah.lakraces.packets;

import net.minecraft.client.Minecraft;
import net.minecraft.entity.SharedMonsterAttributes;
import net.minecraftforge.fml.common.network.simpleimpl.IMessage;
import net.minecraftforge.fml.common.network.simpleimpl.IMessageHandler;
import net.minecraftforge.fml.common.network.simpleimpl.MessageContext;

public class PlayerSpeedPacketHandler implements IMessageHandler<SendPlayerSpeed, IMessage> {
        
    @Override
    public IMessage onMessage(SendPlayerSpeed message, MessageContext ctx) {
    
    Minecraft.getMinecraft().player.getEntityAttribute(SharedMonsterAttributes.MOVEMENT_SPEED).setBaseValue(message.toSend);
    
    return null;
    }
}

 

Packet:

Spoiler

 

package com.zephaniahnoah.lakraces.packets;

import io.netty.buffer.ByteBuf;
import net.minecraftforge.fml.common.network.simpleimpl.IMessage;

public class SendPlayerSpeed implements IMessage {

    public SendPlayerSpeed(){}

    public double toSend;

    public SendPlayerSpeed(double speed) {    
        this.toSend = speed;
    }

    @Override public void toBytes(ByteBuf buf) {
        buf.writeDouble(toSend);
    }

    @Override public void fromBytes(ByteBuf buf) {
        toSend = buf.readDouble();
    }
}

Registering It:

Spoiler

 

...

    @EventHandler
    public void init(FMLInitializationEvent event) {
        INSTANCE.registerMessage(PlayerSpeedPacketHandler.class, SendPlayerSpeed.class, 1, Side.CLIENT);
    }

...

EDIT: I've tried setting the attribute in many places and it has the same effect. It works until I sprint. I tried saving the value from the packet to the client then setting the speed to it on KeyInputEvent but that fires before the player sprints. If there was a sprint event I could set it there.

Edited August 3, 20196 yr by ZephaniahNoah

1 hour ago, ZephaniahNoah said:

.setBaseValue(message.toSend);

I said apply a modifier to the attribute not change the base value.

Also why are you doing it on the client do it on the server.

Do not do it on the client, even though the player movement is handled on the client.

The client can be a hack client that will simple ignore the packet.

Edited August 4, 20196 yr by DavidM

1 hour ago, Animefan8888 said:

I said apply a modifier to the attribute not change the base value.

Also why are you doing it on the client do it on the server.

Aha! I'm sorry. I misunderstood you. This is my first time using attribute modifiers. I'll apply a modifier to the attribute.

Also, I was changing the speed on the client because I was originally using player.capabilities.setPlayerWalkSpeed(.15f); which threw no such method on the server. But I'll do it on the server now. Thank you!!

 

14 minutes ago, DavidM said:

Do not do it on the client, even though the player movement is handled on the client.

The client can be a hack client that will simple ignore the packet.

You're right. But I don't know what you mean by ignore the packet. Anyways I'm doing it on the server now.

Edited August 4, 20196 yr by ZephaniahNoah