[1.15.2] How do I make projectiles invisible for a certain amount of time in first person mode?

TallYate · June 11, 2020

I have a projectile that I shoot out of my head, but it covers almost the whole screen so I want it to be invisible for like half a second in first person mode.

How would I do this?

TheGreyGhost · June 12, 2020

Howdy

I'd suggest you make your own EntityRenderer for your projectile. The renderer can check whether the player is in first person view, and if so, make sure that the entity is at least a given minimum distance away from the player's head before rendering it.

Third person view (0, 1, 2) is accessible from GameSettings and ActiveRenderInfo (minecraft->gameRenderer->activerenderinfo)

-TGG

TallYate · June 13, 2020

Thank you for replying.
This works perfectly, but I have another question.
How do I get the player that is rendering the entity, because I would like the render to be cancelled only for the shooter.

TallYate · June 13, 2020

ok thank you

TallYate · June 13, 2020


if( Minecraft.getInstance().gameSettings.thirdPersonView==0 && entityIn.ticksExisted<20 && Minecraft.getInstance().player == entityIn.shootingEntity ) {
	return;
}
	super.render(entityIn, entityYaw, partialTicks, matrixStackIn, bufferIn, packedLightIn);

This is now never true, but if I add .getEntity() to them the player and shootingEntity, it crashes, also, I tried using .getName but that also crashes the game.
The crash occurs whenever the entity is rendered

TallYate · June 13, 2020

@Override
	public ActionResult<ItemStack> onItemRightClick(World world, PlayerEntity player, Hand hand) {
		if(player.isSneaking()) {
			Vec3d look = player.getLookVec();
			Vec3d pos = player.getPositionVec();
			AccurateSkull skull = new AccurateSkull(world, player, look.x*2, look.y*2, look.z*2);
			skull.setPosition(pos.x, player.getPosYEye(), pos.z);
			skull.addTag("shooter:"+player.getName().toString());
			world.playSound(player, player.getPosition(), SoundEvents.ENTITY_WITHER_SHOOT, SoundCategory.PLAYERS , 1.0F, 1.0F);
			world.addEntity(skull);
			player.getHeldItem(hand).damageItem(100, player, Player -> {});
			return ActionResult.resultSuccess(player.getHeldItem(hand));
		}
		else {
			return ActionResult.resultFail(player.getHeldItem(hand));
		}
	}

TallYate · June 13, 2020

also I just noticed that I shouldn't add that tag because it's already in the entity, so just ignore that bit

TallYate · June 13, 2020

AccurateSkull skull = new AccurateSkull(world, player, look.x*2, look.y*2, look.z*2);

here are the constructors being used

public AccurateSkull(World worldIn, LivingEntity shooter, double accelX, double accelY, double accelZ) {
		super(EntityType.WITHER_SKULL, shooter, accelX, accelY, accelZ, worldIn);
	}

public AccurateProjectile(EntityType<?> p_i50175_1_, LivingEntity p_i50175_2_, double p_i50175_3_, double p_i50175_5_, double p_i50175_7_, World p_i50175_9_) {
	      this(p_i50175_1_, p_i50175_9_);
	      this.shootingEntity = p_i50175_2_;
	      this.setLocationAndAngles(p_i50175_2_.getPosX(), p_i50175_2_.getPosY(), p_i50175_2_.getPosZ(), p_i50175_2_.rotationYaw, p_i50175_2_.rotationPitch);
	      this.recenterBoundingBox();
	      this.setMotion(Vec3d.ZERO);
	      p_i50175_3_ = p_i50175_3_ + this.rand.nextGaussian() * 0.02D;
	      p_i50175_5_ = p_i50175_5_ + this.rand.nextGaussian() * 0.02D;
	      p_i50175_7_ = p_i50175_7_ + this.rand.nextGaussian() * 0.02D;
	      double d0 = (double)MathHelper.sqrt(p_i50175_3_ * p_i50175_3_ + p_i50175_5_ * p_i50175_5_ + p_i50175_7_ * p_i50175_7_);
	      this.accelerationX = p_i50175_3_ / d0 * 0.1D;
	      this.accelerationY = p_i50175_5_ / d0 * 0.1D;
	      this.accelerationZ = p_i50175_7_ / d0 * 0.1D;
	   }

TallYate · June 13, 2020

AccurateProjectile extends Entity btw

TallYate · June 13, 2020

ok I checked if the entity is null

and it is null, but that doesn't make sense because the constructor should set this.shootingEntity to the correct player

CAS_ual_TY · June 13, 2020

shootingEntity might be null on client side (havent checked). Extend your entity with IEntityAdditionalSpawnData if that is the case.

TallYate · June 13, 2020

image.png.dad215cbd0cd1f8b14755cf37c44b276.png

TallYate · June 14, 2020

so what do I do after I implement it?

TallYate · June 14, 2020

so in the writespawndata I can write down the entity with it's UniqueId or Id

but in the readSpawnData, how would I convert it back into an entity from it's id, or is there a way to write the LivingEntity into the buffer

TallYate · June 14, 2020

It's still null, what am I doing wrong?

@Override
	public void writeSpawnData(PacketBuffer buffer) {
		buffer.writeInt(this.shootingEntity.getEntityId());
		
	}

	@Override
	public void readSpawnData(PacketBuffer additionalData) {
		this.shootingEntity=(LivingEntity) this.world.getEntityByID(additionalData.readInt());
	}

TallYate · June 14, 2020

I made them log, but nothing is logged so I think I'm missing something

TallYate · June 14, 2020

return NetworkHooks.getEntitySpawningPacket(this);

I overrided createSpawnPacket with this and now I see writeSpawnData from the server side, but readSpawnData doesn't do anything

TallYate · June 15, 2020

https://github.com/TallYate/Bedrock-Things-mod/tree/master/src/main/java/me/joshua/bedrockthings/util
It's mostly just a copied version of the vanilla versions, but I turned the projectile randomness down.

TallYate · June 15, 2020

I want it to be a wither skull though, I just made the class because I didn't know another way to remove the randomness when spawning a wither skeleton skull

TallYate · June 15, 2020

Ok I registered an EntityType and readSpawnData is now being run on the client side, but right after it runs, the game crashes

Ugdhar · June 15, 2020

Just now, TallYate said:

the game crashes

When that happens, *always* post your debug.log, just saying it crashes doesn't really tell anyone anything

TallYate · June 15, 2020

[m[32m[08:59:51] [Server thread/INFO] [me.jo.be.BedrockThings/]: entitySpawningPacket created
[m[32m[08:59:51] [Server thread/INFO] [me.jo.be.BedrockThings/]: false writing
[m[32m[08:59:51] [Render thread/INFO] [me.jo.be.BedrockThings/]: true reading
[m[1;31m[08:59:51] [Render thread/FATAL] [minecraft/Minecraft]: Unreported exception thrown!
java.lang.NullPointerException: null
	at net.minecraft.client.renderer.entity.EntityRendererManager.shouldRender(EntityRendererManager.java:233) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.WorldRenderer.updateCameraAndRender(WorldRenderer.java:947) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.GameRenderer.renderWorld(GameRenderer.java:612) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.GameRenderer.updateCameraAndRender(GameRenderer.java:434) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:961) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.run(Minecraft.java:558) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.main.Main.main(Main.java:177) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_231] {}
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_231] {}
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_231] {}
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_231] {}
	at net.minecraftforge.userdev.FMLUserdevClientLaunchProvider.lambda$launchService$0(FMLUserdevClientLaunchProvider.java:55) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-5.1.0.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-5.1.0.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-5.1.0.jar:?] {}
	at cpw.mods.modlauncher.Launcher.run(Launcher.java:81) [modlauncher-5.1.0.jar:?] {}
	at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) [modlauncher-5.1.0.jar:?] {}
	at net.minecraftforge.userdev.LaunchTesting.main(LaunchTesting.java:102) [forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {}

TallYate · June 15, 2020

opened with debugger

[m[1;31m[09:07:28] [Server thread/ERROR] [minecraft/ChunkSerializer]: An Entity type net.minecraft.entity.EntityType@1d8ecb80 has thrown an exception trying to write state. It will not persist. Report this to the mod author
net.minecraft.crash.ReportedException: Saving entity NBT
	at net.minecraft.entity.Entity.writeWithoutTypeId(Entity.java:1562) ~[?:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.entity.Entity.writeUnlessRemoved(Entity.java:1467) ~[?:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.entity.Entity.writeUnlessPassenger(Entity.java:1483) ~[?:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.world.chunk.storage.ChunkSerializer.write(ChunkSerializer.java:302) ~[?:?] {re:classloading}
	at net.minecraft.world.server.ChunkManager.func_219229_a(ChunkManager.java:701) ~[?:?] {re:classloading}
	at java.util.stream.ReferencePipeline$2$1.accept(Unknown Source) [?:1.8.0_231] {}
	at java.util.stream.ReferencePipeline$2$1.accept(Unknown Source) [?:1.8.0_231] {}
	at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source) [?:1.8.0_231] {}
	at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(Unknown Source) [?:1.8.0_231] {}
	at java.util.stream.AbstractPipeline.copyInto(Unknown Source) [?:1.8.0_231] {}
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source) [?:1.8.0_231] {}
	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(Unknown Source) [?:1.8.0_231] {}
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(Unknown Source) [?:1.8.0_231] {}
	at java.util.stream.AbstractPipeline.evaluate(Unknown Source) [?:1.8.0_231] {}
	at java.util.stream.ReferencePipeline.forEach(Unknown Source) [?:1.8.0_231] {}
	at net.minecraft.world.server.ChunkManager.save(ChunkManager.java:355) [?:?] {re:classloading}
	at net.minecraft.world.server.ServerChunkProvider.save(ServerChunkProvider.java:317) [?:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.world.server.ServerWorld.save(ServerWorld.java:778) [?:?] {re:classloading}
	at net.minecraft.server.MinecraftServer.save(MinecraftServer.java:544) [?:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.MinecraftServer.stopServer(MinecraftServer.java:587) [?:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.integrated.IntegratedServer.stopServer(IntegratedServer.java:241) [?:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:701) [?:?] {re:classloading,pl:accesstransformer:B}
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_231] {}
Caused by: java.lang.NullPointerException
	at me.joshua.bedrockthings.util.AccurateProjectile.writeAdditional(AccurateProjectile.java:159) ~[?:?] {re:classloading}
	at net.minecraft.entity.Entity.writeWithoutTypeId(Entity.java:1541) ~[?:?] {re:classloading,pl:accesstransformer:B}

Ugdhar · June 15, 2020

42 minutes ago, TallYate said:

Caused by: java.lang.NullPointerException at me.joshua.bedrockthings.util.AccurateProjectile.writeAdditional(AccurateProjectile.java:159) ~[?:?] {re:classloading}

Track that NPE down I'd say, based on the partial logs you've shown, figure out what's null and why, and fix it if it shouldn't be

TallYate · June 15, 2020

I think this is what is crashing the game because if I removed the overrided createSpawnPacket, it doesn't crash, but the skull is invisible

@Override
	public void writeSpawnData(PacketBuffer buffer) {
		BedrockThings.log( (this.world.isRemote()) + " writing");
		buffer.writeInt(this.shootingEntity.getEntityId());
	}

	@Override
	public void readSpawnData(PacketBuffer additionalData) {
		BedrockThings.log( (this.world.isRemote()) + " reading");
		//this.shootingEntity=(LivingEntity) this.world.getEntityByID(additionalData.readInt());
	}
	
	public IPacket<?> createSpawnPacket() {
		BedrockThings.log("entitySpawningPacket created");
		return NetworkHooks.getEntitySpawningPacket(this);
	   }

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[1.15.2] How do I make projectiles invisible for a certain amount of time in first person mode?

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