HuaYuTingFly.java

package net.ccbluex.liquidbounce.features.module.modules.movement;

import net.ccbluex.liquidbounce.event.EventTarget;
import net.ccbluex.liquidbounce.event.UpdateEvent;
import net.ccbluex.liquidbounce.features.module.Module;
import net.ccbluex.liquidbounce.features.module.ModuleCategory;
import net.ccbluex.liquidbounce.features.module.ModuleInfo;
import net.ccbluex.liquidbounce.features.special.HuaYuTingFlyHelp;
import net.ccbluex.liquidbounce.utils.MovementUtils;
import net.ccbluex.liquidbounce.value.FloatValue;

@ModuleInfo(name = "HuaYuTingFly",description = "",category = ModuleCategory.MOVEMENT)
public class HuaYuTingVanillaFly extends Module {
    private final FloatValue speed = new FloatValue("Speed",1f,0.1f,5f);
    @Override
    public void onEnable() {
        HuaYuTingFlyHelp.flyEnabled = true;
        HuaYuTingFlyHelp.x = mc.thePlayer.posX;
        HuaYuTingFlyHelp.y = mc.thePlayer.posY;
        HuaYuTingFlyHelp.z = mc.thePlayer.posZ;
    }

    @EventTarget
    public void onUpdate(UpdateEvent event) {
        final float vanillaSpeed = speed.get();
        mc.thePlayer.capabilities.isFlying = false;
        mc.thePlayer.motionY = 0;
        mc.thePlayer.motionX = 0;
        mc.thePlayer.motionZ = 0;
        if (mc.gameSettings.keyBindJump.isKeyDown())
            mc.thePlayer.motionY += vanillaSpeed;
        if (mc.gameSettings.keyBindSneak.isKeyDown())
            mc.thePlayer.motionY -= vanillaSpeed;
        MovementUtils.strafe(vanillaSpeed);
    }
}

HuaYuTingFlyHelp.java

package net.ccbluex.liquidbounce.features.special;

import kotlin.jvm.JvmStatic;
import net.ccbluex.liquidbounce.event.EventTarget;
import net.ccbluex.liquidbounce.event.Listenable;
import net.ccbluex.liquidbounce.event.PacketEvent;
import net.ccbluex.liquidbounce.event.UpdateEvent;
import net.ccbluex.liquidbounce.utils.MinecraftInstance;
import net.minecraft.network.Packet;
import net.minecraft.network.play.INetHandlerPlayServer;
import net.minecraft.network.play.client.C03PacketPlayer;

import java.util.ArrayList;
import java.util.List;

public class HuaYuTingFlyHelp extends MinecraftInstance implements Listenable {
    public static boolean flyEnabled = false;
    private final List<Packet<INetHandlerPlayServer>> packets =new ArrayList<>();
    private final List<Packet<?>> c03packet = new ArrayList<>();
    public static double x = 0.0;
    public static double y = 0.0;
    public static double z = 0.0;
    @Override
    public boolean handleEvents() {
        return true;
    }

    @EventTarget
    public void onPacket(PacketEvent event) {
        if (x + y + z == 0.0) return;
        final Packet<?> packet = event.getPacket();
        if (packet instanceof C03PacketPlayer) {
            event.cancelEvent();
            if (c03packet.isEmpty()) c03packet.add(packet); else sendPacketNoEvent(c03packet.get(0));
        }
    }

    @EventTarget
    public void onUpdate(UpdateEvent event) {
        mc.thePlayer.setPositionAndUpdate(mc.thePlayer.posX, mc.thePlayer.posY, mc.thePlayer.posZ);
    }

    @JvmStatic
    private final void sendPacketNoEvent(Packet packet) {
        packets.add(packet);
        mc.getNetHandler().addToSendQueue(packet);
    }
}