Jump to content

[1.8.9] BreakEvent.block cannot be resolved or is not a field


Recommended Posts

Posted

Hi all,

 

I just started learning to mod minecraft with the help of a book (Minecraft modding with Forge). In that book there is an example which should make Diamond ore blocks explode. I have the following code:

 

package org.devoxx4kids.forge.mods;

import net.minecraft.init.Blocks;
import net.minecraftforge.event.world.BlockEvent.BreakEvent;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;

public class DiamondOreTrap {
@SubscribeEvent
public void explode(BreakEvent event)
{
	if(event.block != Blocks.diamond_ore)
	{
		return;
	}

	event.world.createExplosion(null, event.x, event.y, event.z, 10, true);
}
}

 

At event.block I get an error stating "block cannot be resolved or is not a field." The same goes for event.x, event.y and event.z. Am I doing something wrong here? Any help is appreciated.

Posted

In 1.8+ this was replaced with an

IBlockState

field named

state

. You must also use the getter (

getState()

) instead of accessing the field directly.

 

Thanks for the answer! Could you maybe explain it a bit more or give me link to where it is explained?

 

Also, a bit off topic, but is there any place where I can see all events? I tried googling but can't seem to find anything. (as in some kind of documentation)

Posted

Thanks for the answer! Could you maybe explain it a bit more or give me link to where it is explained?

Forge's documentation has an introduction to blockstates here.

 

Also, a bit off topic, but is there any place where I can see all events? I tried googling but can't seem to find anything.

Use your IDE to find the subclasses of

net.minecraftforge.fml.common.eventhandler.Event

.

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

Posted

Thanks for the answer! Could you maybe explain it a bit more or give me link to where it is explained?

Forge's documentation has an introduction to blockstates here.

 

Also, a bit off topic, but is there any place where I can see all events? I tried googling but can't seem to find anything.

Use your IDE to find the subclasses of

net.minecraftforge.fml.common.eventhandler.Event

.

 

Thanks! That should help.

Posted

Thanks for the answer! Could you maybe explain it a bit more or give me link to where it is explained?

Forge's documentation has an introduction to blockstates here.

 

Also, a bit off topic, but is there any place where I can see all events? I tried googling but can't seem to find anything.

Use your IDE to find the subclasses of

net.minecraftforge.fml.common.eventhandler.Event

.

 

First of all, your answer helped a lot. However I'm still having some trouble. I replaced the event.block with event.state.getBlock(). However I can't figure out how to get the coordinates of the block (what currently is event.x etc). Any chance you can help me with that?

 

EDIT: I noticed a getBlockBoundsMaxX() (also for Y, Z and min) method. Does that have anything to do with it?

Posted

Does the event have a BlockPos field? If so, the pos (position) has x, y and z getter methods.

The debugger is a powerful and necessary tool in any IDE, so learn how to use it. You'll be able to tell us more and get better help here if you investigate your runtime problems in the debugger before posting.

Posted

Thanks for the answer! Could you maybe explain it a bit more or give me link to where it is explained?

Forge's documentation has an introduction to blockstates here.

 

Also, a bit off topic, but is there any place where I can see all events? I tried googling but can't seem to find anything.

Use your IDE to find the subclasses of

net.minecraftforge.fml.common.eventhandler.Event

.

 

First of all, your answer helped a lot. However I'm still having some trouble. I replaced the event.block with event.state.getBlock(). However I can't figure out how to get the coordinates of the block (what currently is event.x etc). Any chance you can help me with that?

 

EDIT: I noticed a getBlockBoundsMaxX() (also for Y, Z and min) method. Does that have anything to do with it?

Not event state.getBlock() but event .getState().getBlock()

VANILLA MINECRAFT CLASSES ARE THE BEST RESOURCES WHEN MODDING

I will be posting 1.15.2 modding tutorials on this channel. If you want to be notified of it do the normal YouTube stuff like subscribing, ect.

Forge and vanilla BlockState generator.

Posted

Thanks for the answer! Could you maybe explain it a bit more or give me link to where it is explained?

Forge's documentation has an introduction to blockstates here.

 

Also, a bit off topic, but is there any place where I can see all events? I tried googling but can't seem to find anything.

Use your IDE to find the subclasses of

net.minecraftforge.fml.common.eventhandler.Event

.

 

First of all, your answer helped a lot. However I'm still having some trouble. I replaced the event.block with event.state.getBlock(). However I can't figure out how to get the coordinates of the block (what currently is event.x etc). Any chance you can help me with that?

 

EDIT: I noticed a getBlockBoundsMaxX() (also for Y, Z and min) method. Does that have anything to do with it?

Not event state.getBlock() but event .getState().getBlock()

 

If I do that I get an error saying that it's undefinded for the type BlockEvent.BreakEvent. Eclipse says that the way to fix it is to cast event, but what should I cast it to?

 

Does the event have a BlockPos field? If so, the pos (position) has x, y and z getter methods.

 

It doesn't seem to have a direct BlockPos field. But as for the above, it says I should cast event.

Posted

If I do that I get an error saying that it's undefinded for the type BlockEvent.BreakEvent. Eclipse says that the way to fix it is to cast event, but what should I cast it to?

The getter method didn't exist in 1.8.9, it was only in 1.9 that all event fields were encapsulated with getter methods.

 

It doesn't seem to have a direct BlockPos field. But as for the above, it says I should cast event.

BlockEvent

has a

pos

field of type

BlockPos

.

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

Posted

Eclipse says that the way to fix it is to cast event, but what should I cast it to?

 

Eclipse's suggestions must always be taken with several grains of salt. They're often like offering to amputate your leg to cure you of athlete's foot.

 

Does the event have a BlockPos field? If so, the pos (position) has x, y and z getter methods.

 

It doesn't seem to have a direct BlockPos field.

 

BlockPos is a class, not a field name. Didn't you even explore the event class to see what's in it? Did you try a text-wise search for "BlockPos"? Please look at the fields and their types and their visibility.

The debugger is a powerful and necessary tool in any IDE, so learn how to use it. You'll be able to tell us more and get better help here if you investigate your runtime problems in the debugger before posting.

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.