Jump to content

Recommended Posts

Posted

Hi!
I was trying to create a smoke projectile, that when hits the ground spawn some particles for a certain duration.
The problem is that, when the entity hits the ground, it don't spawn the particles at all.

Here is my projectile:

@OnlyIn(value = Dist.CLIENT, _interface = IRendersAsItem.class)
public class SmokeBulletEntity extends DamagingProjectileEntity implements IRendersAsItem {

    private static final ItemStack STACK = new ItemStack(ModItems.BULLET.get());

    private boolean activated;
    private int duration;

    public SmokeBulletEntity(World world) {
        super(ModEntities.SMOKE_BULLET.get(), world);
        this.activated = false;
    }

    @Override
    public ItemStack getItem() {
        return STACK;
    }

    @Override
    protected void onHitBlock(BlockRayTraceResult rayTraceResult) {
        if (this.activated)
            return;
        if (!this.level.isClientSide) {
            this.activate();
        }
        super.onHitBlock(rayTraceResult);
    }

    @Override
    protected void onHitEntity(EntityRayTraceResult entityRayTraceResult) {
        //Must be Empty
    }

    private void activate() {
        this.activated = true;
        this.duration = 200;
        this.setDeltaMovement(0, 0, 0);
        this.xPower = 0;
        this.yPower = 0;
        this.zPower = 0;
        System.out.println("Active Smoke Projectile");
    }

    @Override
    public void tick() {
        if (this.activated && !this.level.isClientSide) {
            //System.out.println(String.format("%f, %f, %f", this.getX(), this.getY(), this.getZ()));
            for (int i = 0; i < 100; i++) {
                this.level.addParticle(ParticleTypes.FLAME, this.getX(), this.getY() + i, this.getZ(), 0, 0, 0);
            }
            this.duration--;
            if (this.duration <= 0) {
                this.remove();
            }
        } else {
            super.tick();
        }
    }

    @Override
    public void addAdditionalSaveData(CompoundNBT nbt) {
        super.addAdditionalSaveData(nbt);
        nbt.putBoolean("activated", this.activated);
        nbt.putInt("duration", this.duration);
    }

    @Override
    public void readAdditionalSaveData(CompoundNBT nbt) {
        super.readAdditionalSaveData(nbt);
        if (nbt.contains("activated")) {
            this.activated = nbt.getBoolean("activated");
        }
        if (nbt.contains("duration")) {
            this.duration = nbt.getInt("duration");
        }
    }

    @Override
    public IPacket<?> getAddEntityPacket() {
        return NetworkHooks.getEntitySpawningPacket(this);
    }
}

Can somebody explain me why?

Thanks!

Posted

Ok so, i changed the function Entity#tick

public void tick() {
        if (this.activated) {
            for (int i = 0; i < 100; i++) {
                this.level.addParticle(ParticleTypes.FLAME, this.getX(), this.getY() + i, this.getZ(), 0, 0, 0);
            }
            this.duration--;
            if (this.duration <= 0) {
                this.remove();
            }
        } else {
            super.tick();
        }
    }

But still the bullet does not show the particles. There are only those of the basic bullet:

image.png.86e222a6691e6ba0b83231925f45521f.png

Why this happen?

Posted (edited)
54 minutes ago, Yurim64 said:

How can i set the data on the client side?

The methods Entity#addAdditionalSaveData and Entity#readAdditionalSaveData doesn't do that?

if the code above is still partly up-to-date, then it is due to the onHitBlock method because you only set the activate method on the server side

Edit: Entity#addAdditionalSaveData and Entity#readAdditionalSaveData these methods only save and write the data of the entity

Edited by Luis_ST
Posted

Ok so, i changed the entity in this way:

 

public class SmokeBulletEntity extends DamagingProjectileEntity implements IRendersAsItem {


    private static final DataParameter<Boolean> ACTIVATED = EntityDataManager.defineId(SmokeBulletEntity.class, DataSerializers.BOOLEAN);
    private static final ItemStack STACK = new ItemStack(ModItems.BULLET.get());

    private int duration;

    public SmokeBulletEntity(World world) {
        super(ModEntities.SMOKE_BULLET.get(), world);
    }

    @Override
    public ItemStack getItem() {
        return STACK;
    }

    @Override
    protected void onHitBlock(BlockRayTraceResult rayTraceResult) {
        if (this.isActivated())
            return;
        if (!this.level.isClientSide) {
            this.activate();
        }
        super.onHitBlock(rayTraceResult);
    }

    @Override
    protected void onHitEntity(EntityRayTraceResult entityRayTraceResult) {
        //Must be Empty
    }

    private void activate() {
        this.setActivated(true);
        this.duration = 200;
        this.setDeltaMovement(0, 0, 0);
        this.xPower = 0;
        this.yPower = 0;
        this.zPower = 0;
        System.out.println("Active Smoke Projectile");
    }

    @Override
    public void tick() {
        if (this.isActivated()) {
            for (int i = 0; i < 100; i++) {
                this.level.addParticle(ParticleTypes.FLAME, this.getX(), this.getY() + i, this.getZ(), 0, 0, 0);
            }
            this.duration--;
            if (this.duration <= 0) {
                this.remove();
            }
        } else {
            super.tick();
        }
    }

    @Override
    public void addAdditionalSaveData(CompoundNBT nbt) {
        super.addAdditionalSaveData(nbt);
        nbt.putBoolean("activated", this.isActivated());
        nbt.putInt("duration", this.duration);
    }

    @Override
    protected void defineSynchedData() {
        super.defineSynchedData();
        this.entityData.set(ACTIVATED, false);
    }

    public void setActivated(boolean activated) {
        this.entityData.set(ACTIVATED, activated);
    }

    public boolean isActivated() {
        return this.entityData.get(ACTIVATED);
    }

    @Override
    public EntityDataManager getEntityData() {
        return super.getEntityData();
    }

    @Override
    public void readAdditionalSaveData(CompoundNBT nbt) {
        super.readAdditionalSaveData(nbt);
        if (nbt.contains("activated")) {
            this.setActivated(nbt.getBoolean("activated"));
        }
        if (nbt.contains("duration")) {
            this.duration = nbt.getInt("duration");
        }
    }

    @Override
    public IPacket<?> getAddEntityPacket() {
        return NetworkHooks.getEntitySpawningPacket(this);
    }
}

But now, when i spawn it i encounter this error:

[15:39:10] [Server thread/FATAL] [minecraft/ThreadTaskExecutor]: Error executing task on Server
java.lang.NullPointerException: null
	at net.minecraft.network.datasync.EntityDataManager.set(EntityDataManager.java:122) ~[forge:?] {re:classloading}
	at com.ike.gunmod.entity.SmokeBulletEntity.defineSynchedData(SmokeBulletEntity.java:93) ~[?:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.entity.Entity.<init>(Entity.java:216) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.entity.projectile.ProjectileEntity.<init>(ProjectileEntity.java:25) ~[forge:?] {re:classloading}
	at net.minecraft.entity.projectile.DamagingProjectileEntity.<init>(DamagingProjectileEntity.java:26) ~[forge:?] {re:classloading}
	at com.ike.gunmod.entity.SmokeBulletEntity.<init>(SmokeBulletEntity.java:35) ~[?:?] {re:classloading,pl:runtimedistcleaner:A}
	at com.ike.gunmod.item.gun.SmokeGunItem.getBullet(SmokeGunItem.java:32) ~[?:?] {re:classloading}
	at com.ike.gunmod.item.gun.AbstractGunItem.use(AbstractGunItem.java:42) ~[?:?] {re:classloading}
	at net.minecraft.item.ItemStack.use(ItemStack.java:217) ~[forge:?] {re:classloading,xf:fml:forge:filled_map.4,xf:fml:forge:itemstack}
	at net.minecraft.server.management.PlayerInteractionManager.useItem(PlayerInteractionManager.java:287) ~[forge:?] {re:classloading}
	at net.minecraft.network.play.ServerPlayNetHandler.handleUseItem(ServerPlayNetHandler.java:982) ~[forge:?] {re:classloading}
	at net.minecraft.network.play.client.CPlayerTryUseItemPacket.handle(CPlayerTryUseItemPacket.java:28) ~[forge:?] {re:classloading}
	at net.minecraft.network.play.client.CPlayerTryUseItemPacket.handle(CPlayerTryUseItemPacket.java:9) ~[forge:?] {re:classloading}
	at net.minecraft.network.PacketThreadUtil.lambda$ensureRunningOnSameThread$0(PacketThreadUtil.java:19) ~[forge:?] {re:classloading}
	at net.minecraft.util.concurrent.TickDelayedTask.run(TickDelayedTask.java:17) ~[forge:?] {re:classloading}
	at net.minecraft.util.concurrent.ThreadTaskExecutor.doRunTask(ThreadTaskExecutor.java:136) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.util.concurrent.RecursiveEventLoop.doRunTask(RecursiveEventLoop.java:22) ~[forge:?] {re:classloading}
	at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:734) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:159) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.util.concurrent.ThreadTaskExecutor.pollTask(ThreadTaskExecutor.java:109) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:717) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:711) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.util.concurrent.ThreadTaskExecutor.managedBlock(ThreadTaskExecutor.java:119) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:697) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:646) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:232) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_231] {}

Why this happen?

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Announcements



  • Recently Browsing

    • No registered users viewing this page.
  • Posts

    • Version 1.19 - Forge 41.0.63 I want to create a wolf entity that I can ride, so far it seems to be working, but the problem is that when I get on the wolf, I can’t control it. I then discovered that the issue is that the server doesn’t detect that I’m riding the wolf, so I’m struggling with synchronization. However, it seems to not be working properly. As I understand it, the server receives the packet but doesn’t register it correctly. I’m a bit new to Java, and I’ll try to provide all the relevant code and prints *The comments and prints are translated by chatgpt since they were originally in Spanish* Thank you very much in advance No player is mounted, or the passenger is not a player. No player is mounted, or the passenger is not a player. No player is mounted, or the passenger is not a player. No player is mounted, or the passenger is not a player. No player is mounted, or the passenger is not a player. MountableWolfEntity package com.vals.valscraft.entity; import com.vals.valscraft.network.MountSyncPacket; import com.vals.valscraft.network.NetworkHandler; import net.minecraft.client.Minecraft; import net.minecraft.network.syncher.EntityDataAccessor; import net.minecraft.network.syncher.EntityDataSerializers; import net.minecraft.network.syncher.SynchedEntityData; import net.minecraft.server.MinecraftServer; import net.minecraft.server.level.ServerPlayer; import net.minecraft.world.entity.EntityType; import net.minecraft.world.entity.Mob; import net.minecraft.world.entity.ai.attributes.AttributeSupplier; import net.minecraft.world.entity.ai.attributes.Attributes; import net.minecraft.world.entity.animal.Wolf; import net.minecraft.world.entity.player.Player; import net.minecraft.world.entity.Entity; import net.minecraft.world.InteractionHand; import net.minecraft.world.InteractionResult; import net.minecraft.world.item.ItemStack; import net.minecraft.world.item.Items; import net.minecraft.world.level.Level; import net.minecraft.world.phys.Vec3; import net.minecraftforge.event.TickEvent; import net.minecraftforge.eventbus.api.SubscribeEvent; import net.minecraftforge.network.PacketDistributor; public class MountableWolfEntity extends Wolf { private boolean hasSaddle; private static final EntityDataAccessor<Byte> DATA_ID_FLAGS = SynchedEntityData.defineId(MountableWolfEntity.class, EntityDataSerializers.BYTE); public MountableWolfEntity(EntityType<? extends Wolf> type, Level level) { super(type, level); this.hasSaddle = false; } @Override protected void defineSynchedData() { super.defineSynchedData(); this.entityData.define(DATA_ID_FLAGS, (byte)0); } public static AttributeSupplier.Builder createAttributes() { return Wolf.createAttributes() .add(Attributes.MAX_HEALTH, 20.0) .add(Attributes.MOVEMENT_SPEED, 0.3); } @Override public InteractionResult mobInteract(Player player, InteractionHand hand) { ItemStack itemstack = player.getItemInHand(hand); if (itemstack.getItem() == Items.SADDLE && !this.hasSaddle()) { if (!player.isCreative()) { itemstack.shrink(1); } this.setSaddle(true); return InteractionResult.SUCCESS; } else if (!level.isClientSide && this.hasSaddle()) { player.startRiding(this); MountSyncPacket packet = new MountSyncPacket(true); // 'true' means the player is mounted NetworkHandler.CHANNEL.sendToServer(packet); // Ensure the server handles the packet return InteractionResult.SUCCESS; } return InteractionResult.PASS; } @Override public void travel(Vec3 travelVector) { if (this.isVehicle() && this.getControllingPassenger() instanceof Player) { System.out.println("The wolf has a passenger."); System.out.println("The passenger is a player."); Player player = (Player) this.getControllingPassenger(); // Ensure the player is the controller this.setYRot(player.getYRot()); this.yRotO = this.getYRot(); this.setXRot(player.getXRot() * 0.5F); this.setRot(this.getYRot(), this.getXRot()); this.yBodyRot = this.getYRot(); this.yHeadRot = this.yBodyRot; float forward = player.zza; float strafe = player.xxa; if (forward <= 0.0F) { forward *= 0.25F; } this.flyingSpeed = this.getSpeed() * 0.1F; this.setSpeed((float) this.getAttributeValue(Attributes.MOVEMENT_SPEED) * 1.5F); this.setDeltaMovement(new Vec3(strafe, travelVector.y, forward).scale(this.getSpeed())); this.calculateEntityAnimation(this, false); } else { // The wolf does not have a passenger or the passenger is not a player System.out.println("No player is mounted, or the passenger is not a player."); super.travel(travelVector); } } public boolean hasSaddle() { return this.hasSaddle; } public void setSaddle(boolean hasSaddle) { this.hasSaddle = hasSaddle; } @Override protected void dropEquipment() { super.dropEquipment(); if (this.hasSaddle()) { this.spawnAtLocation(Items.SADDLE); this.setSaddle(false); } } @SubscribeEvent public static void onServerTick(TickEvent.ServerTickEvent event) { if (event.phase == TickEvent.Phase.START) { MinecraftServer server = net.minecraftforge.server.ServerLifecycleHooks.getCurrentServer(); if (server != null) { for (ServerPlayer player : server.getPlayerList().getPlayers()) { if (player.isPassenger() && player.getVehicle() instanceof MountableWolfEntity) { MountableWolfEntity wolf = (MountableWolfEntity) player.getVehicle(); System.out.println("Tick: " + player.getName().getString() + " is correctly mounted on " + wolf); } } } } } private boolean lastMountedState = false; @Override public void tick() { super.tick(); if (!this.level.isClientSide) { // Only on the server boolean isMounted = this.isVehicle() && this.getControllingPassenger() instanceof Player; // Only print if the state changed if (isMounted != lastMountedState) { if (isMounted) { Player player = (Player) this.getControllingPassenger(); // Verify the passenger is a player System.out.println("Server: Player " + player.getName().getString() + " is now mounted."); } else { System.out.println("Server: The wolf no longer has a passenger."); } lastMountedState = isMounted; } } } @Override public void addPassenger(Entity passenger) { super.addPassenger(passenger); if (passenger instanceof Player) { Player player = (Player) passenger; if (!this.level.isClientSide && player instanceof ServerPlayer) { // Send the packet to the server to indicate the player is mounted NetworkHandler.CHANNEL.send(PacketDistributor.PLAYER.with(() -> (ServerPlayer) player), new MountSyncPacket(true)); } } } @Override public void removePassenger(Entity passenger) { super.removePassenger(passenger); if (passenger instanceof Player) { Player player = (Player) passenger; if (!this.level.isClientSide && player instanceof ServerPlayer) { // Send the packet to the server to indicate the player is no longer mounted NetworkHandler.CHANNEL.send(PacketDistributor.PLAYER.with(() -> (ServerPlayer) player), new MountSyncPacket(false)); } } } @Override public boolean isControlledByLocalInstance() { Entity entity = this.getControllingPassenger(); return entity instanceof Player; } @Override public void positionRider(Entity passenger) { if (this.hasPassenger(passenger)) { double xOffset = Math.cos(Math.toRadians(this.getYRot() + 90)) * 0.4; double zOffset = Math.sin(Math.toRadians(this.getYRot() + 90)) * 0.4; passenger.setPos(this.getX() + xOffset, this.getY() + this.getPassengersRidingOffset() + passenger.getMyRidingOffset(), this.getZ() + zOffset); } } } MountSyncPacket package com.vals.valscraft.network; import com.vals.valscraft.entity.MountableWolfEntity; import net.minecraft.network.FriendlyByteBuf; import net.minecraft.server.level.ServerLevel; import net.minecraft.server.level.ServerPlayer; import net.minecraft.world.entity.Entity; import net.minecraft.world.entity.player.Player; import net.minecraftforge.network.NetworkEvent; import java.util.function.Supplier; public class MountSyncPacket { private final boolean isMounted; public MountSyncPacket(boolean isMounted) { this.isMounted = isMounted; } public void encode(FriendlyByteBuf buffer) { buffer.writeBoolean(isMounted); } public static MountSyncPacket decode(FriendlyByteBuf buffer) { return new MountSyncPacket(buffer.readBoolean()); } public void handle(NetworkEvent.Context context) { context.enqueueWork(() -> { ServerPlayer player = context.getSender(); // Get the player from the context if (player != null) { // Verifies if the player has dismounted if (!isMounted) { Entity vehicle = player.getVehicle(); if (vehicle instanceof MountableWolfEntity wolf) { // Logic to remove the player as a passenger wolf.removePassenger(player); System.out.println("Server: Player " + player.getName().getString() + " is no longer mounted."); } } } }); context.setPacketHandled(true); // Marks the packet as handled } } networkHandler package com.vals.valscraft.network; import com.vals.valscraft.valscraft; import net.minecraft.resources.ResourceLocation; import net.minecraftforge.network.NetworkRegistry; import net.minecraftforge.network.simple.SimpleChannel; import net.minecraftforge.network.NetworkEvent; import java.util.function.Supplier; public class NetworkHandler { private static final String PROTOCOL_VERSION = "1"; public static final SimpleChannel CHANNEL = NetworkRegistry.newSimpleChannel( new ResourceLocation(valscraft.MODID, "main"), () -> PROTOCOL_VERSION, PROTOCOL_VERSION::equals, PROTOCOL_VERSION::equals ); public static void init() { int packetId = 0; // Register the mount synchronization packet CHANNEL.registerMessage( packetId++, MountSyncPacket.class, MountSyncPacket::encode, MountSyncPacket::decode, (msg, context) -> msg.handle(context.get()) // Get the context with context.get() ); } }  
    • Do you use features of inventory profiles next (ipnext) or is there a change without it?
    • Remove rubidium - you are already using embeddium, which is a fork of rubidium
  • Topics

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.