minecraft-src/net/minecraft/world/entity/projectile/AbstractArrow.java

package net.minecraft.world.entity.projectile;

import com.google.common.collect.Lists;
import com.mojang.serialization.Codec;
import it.unimi.dsi.fastutil.ints.IntOpenHashSet;
import java.util.List;
import java.util.Objects;
import net.minecraft.advancements.CriteriaTriggers;
import net.minecraft.core.BlockPos;
import net.minecraft.core.component.DataComponents;
import net.minecraft.core.particles.ParticleTypes;
import net.minecraft.core.registries.BuiltInRegistries;
import net.minecraft.network.protocol.game.ClientboundGameEventPacket;
import net.minecraft.network.syncher.EntityDataAccessor;
import net.minecraft.network.syncher.EntityDataSerializers;
import net.minecraft.network.syncher.SynchedEntityData;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.sounds.SoundEvent;
import net.minecraft.sounds.SoundEvents;
import net.minecraft.tags.EntityTypeTags;
import net.minecraft.util.Mth;
import net.minecraft.util.Unit;
import net.minecraft.world.damagesource.DamageSource;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.EntityType;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.MoverType;
import net.minecraft.world.entity.OminousItemSpawner;
import net.minecraft.world.entity.SlotAccess;
import net.minecraft.world.entity.ai.attributes.Attributes;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.item.Item;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.enchantment.EnchantmentHelper;
import net.minecraft.world.level.ClipContext;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.storage.ValueInput;
import net.minecraft.world.level.storage.ValueOutput;
import net.minecraft.world.phys.AABB;
import net.minecraft.world.phys.BlockHitResult;
import net.minecraft.world.phys.EntityHitResult;
import net.minecraft.world.phys.HitResult;
import net.minecraft.world.phys.Vec3;
import net.minecraft.world.phys.shapes.VoxelShape;
import org.jetbrains.annotations.Nullable;

public abstract class AbstractArrow extends Projectile {
	private static final double ARROW_BASE_DAMAGE = 2.0;
	private static final int SHAKE_TIME = 7;
	private static final float WATER_INERTIA = 0.6F;
	private static final float INERTIA = 0.99F;
	private static final short DEFAULT_LIFE = 0;
	private static final byte DEFAULT_SHAKE = 0;
	private static final boolean DEFAULT_IN_GROUND = false;
	private static final boolean DEFAULT_CRIT = false;
	private static final byte DEFAULT_PIERCE_LEVEL = 0;
	private static final EntityDataAccessor<Byte> ID_FLAGS = SynchedEntityData.defineId(AbstractArrow.class, EntityDataSerializers.BYTE);
	private static final EntityDataAccessor<Byte> PIERCE_LEVEL = SynchedEntityData.defineId(AbstractArrow.class, EntityDataSerializers.BYTE);
	private static final EntityDataAccessor<Boolean> IN_GROUND = SynchedEntityData.defineId(AbstractArrow.class, EntityDataSerializers.BOOLEAN);
	private static final int FLAG_CRIT = 1;
	private static final int FLAG_NOPHYSICS = 2;
	@Nullable
	private BlockState lastState;
	protected int inGroundTime;
	public AbstractArrow.Pickup pickup = AbstractArrow.Pickup.DISALLOWED;
	public int shakeTime = 0;
	private int life = 0;
	private double baseDamage = 2.0;
	private SoundEvent soundEvent = this.getDefaultHitGroundSoundEvent();
	@Nullable
	private IntOpenHashSet piercingIgnoreEntityIds;
	@Nullable
	private List<Entity> piercedAndKilledEntities;
	private ItemStack pickupItemStack = this.getDefaultPickupItem();
	@Nullable
	private ItemStack firedFromWeapon = null;

	protected AbstractArrow(EntityType<? extends AbstractArrow> entityType, Level level) {
		super(entityType, level);
	}

	protected AbstractArrow(
		EntityType<? extends AbstractArrow> entityType, double x, double y, double z, Level level, ItemStack pickupItemStack, @Nullable ItemStack firedFromWeapon
	) {
		this(entityType, level);
		this.pickupItemStack = pickupItemStack.copy();
		this.applyComponentsFromItemStack(pickupItemStack);
		Unit unit = pickupItemStack.remove(DataComponents.INTANGIBLE_PROJECTILE);
		if (unit != null) {
			this.pickup = AbstractArrow.Pickup.CREATIVE_ONLY;
		}

		this.setPos(x, y, z);
		if (firedFromWeapon != null && level instanceof ServerLevel serverLevel) {
			if (firedFromWeapon.isEmpty()) {
				throw new IllegalArgumentException("Invalid weapon firing an arrow");
			}

			this.firedFromWeapon = firedFromWeapon.copy();
			int i = EnchantmentHelper.getPiercingCount(serverLevel, firedFromWeapon, this.pickupItemStack);
			if (i > 0) {
				this.setPierceLevel((byte)i);
			}
		}
	}

	protected AbstractArrow(
		EntityType<? extends AbstractArrow> entityType, LivingEntity owner, Level level, ItemStack pickupItemStack, @Nullable ItemStack firedFromWeapon
	) {
		this(entityType, owner.getX(), owner.getEyeY() - 0.1F, owner.getZ(), level, pickupItemStack, firedFromWeapon);
		this.setOwner(owner);
	}

	public void setSoundEvent(SoundEvent soundEvent) {
		this.soundEvent = soundEvent;
	}

	@Override
	public boolean shouldRenderAtSqrDistance(double distance) {
		double d = this.getBoundingBox().getSize() * 10.0;
		if (Double.isNaN(d)) {
			d = 1.0;
		}

		d *= 64.0 * getViewScale();
		return distance < d * d;
	}

	@Override
	protected void defineSynchedData(SynchedEntityData.Builder builder) {
		builder.define(ID_FLAGS, (byte)0);
		builder.define(PIERCE_LEVEL, (byte)0);
		builder.define(IN_GROUND, false);
	}

	@Override
	public void shoot(double x, double y, double z, float velocity, float inaccuracy) {
		super.shoot(x, y, z, velocity, inaccuracy);
		this.life = 0;
	}

	@Override
	public void lerpMotion(double x, double y, double z) {
		super.lerpMotion(x, y, z);
		this.life = 0;
		if (this.isInGround() && Mth.lengthSquared(x, y, z) > 0.0) {
			this.setInGround(false);
		}
	}

	@Override
	public void onSyncedDataUpdated(EntityDataAccessor<?> dataAccessor) {
		super.onSyncedDataUpdated(dataAccessor);
		if (!this.firstTick && this.shakeTime <= 0 && dataAccessor.equals(IN_GROUND) && this.isInGround()) {
			this.shakeTime = 7;
		}
	}

	@Override
	public void tick() {
		boolean bl = !this.isNoPhysics();
		Vec3 vec3 = this.getDeltaMovement();
		BlockPos blockPos = this.blockPosition();
		BlockState blockState = this.level().getBlockState(blockPos);
		if (!blockState.isAir() && bl) {
			VoxelShape voxelShape = blockState.getCollisionShape(this.level(), blockPos);
			if (!voxelShape.isEmpty()) {
				Vec3 vec32 = this.position();

				for (AABB aABB : voxelShape.toAabbs()) {
					if (aABB.move(blockPos).contains(vec32)) {
						this.setDeltaMovement(Vec3.ZERO);
						this.setInGround(true);
						break;
					}
				}
			}
		}

		if (this.shakeTime > 0) {
			this.shakeTime--;
		}

		if (this.isInWaterOrRain()) {
			this.clearFire();
		}

		if (this.isInGround() && bl) {
			if (!this.level().isClientSide()) {
				if (this.lastState != blockState && this.shouldFall()) {
					this.startFalling();
				} else {
					this.tickDespawn();
				}
			}

			this.inGroundTime++;
			if (this.isAlive()) {
				this.applyEffectsFromBlocks();
			}

			if (!this.level().isClientSide) {
				this.setSharedFlagOnFire(this.getRemainingFireTicks() > 0);
			}
		} else {
			this.inGroundTime = 0;
			Vec3 vec33 = this.position();
			if (this.isInWater()) {
				this.applyInertia(this.getWaterInertia());
				this.addBubbleParticles(vec33);
			}

			if (this.isCritArrow()) {
				for (int i = 0; i < 4; i++) {
					this.level()
						.addParticle(ParticleTypes.CRIT, vec33.x + vec3.x * i / 4.0, vec33.y + vec3.y * i / 4.0, vec33.z + vec3.z * i / 4.0, -vec3.x, -vec3.y + 0.2, -vec3.z);
				}
			}

			float f;
			if (!bl) {
				f = (float)(Mth.atan2(-vec3.x, -vec3.z) * 180.0F / (float)Math.PI);
			} else {
				f = (float)(Mth.atan2(vec3.x, vec3.z) * 180.0F / (float)Math.PI);
			}

			float g = (float)(Mth.atan2(vec3.y, vec3.horizontalDistance()) * 180.0F / (float)Math.PI);
			this.setXRot(lerpRotation(this.getXRot(), g));
			this.setYRot(lerpRotation(this.getYRot(), f));
			if (bl) {
				BlockHitResult blockHitResult = this.level()
					.clipIncludingBorder(new ClipContext(vec33, vec33.add(vec3), ClipContext.Block.COLLIDER, ClipContext.Fluid.NONE, this));
				this.stepMoveAndHit(blockHitResult);
			} else {
				this.setPos(vec33.add(vec3));
				this.applyEffectsFromBlocks();
			}

			if (!this.isInWater()) {
				this.applyInertia(0.99F);
			}

			if (bl && !this.isInGround()) {
				this.applyGravity();
			}

			super.tick();
		}
	}

	private void stepMoveAndHit(BlockHitResult hitResult) {
		while (this.isAlive()) {
			Vec3 vec3 = this.position();
			EntityHitResult entityHitResult = this.findHitEntity(vec3, hitResult.getLocation());
			Vec3 vec32 = ((HitResult)Objects.requireNonNullElse(entityHitResult, hitResult)).getLocation();
			this.setPos(vec32);
			this.applyEffectsFromBlocks(vec3, vec32);
			if (this.portalProcess != null && this.portalProcess.isInsidePortalThisTick()) {
				this.handlePortal();
			}

			if (entityHitResult == null) {
				if (this.isAlive() && hitResult.getType() != HitResult.Type.MISS) {
					this.hitTargetOrDeflectSelf(hitResult);
					this.hasImpulse = true;
				}
				break;
			} else if (this.isAlive() && !this.noPhysics) {
				ProjectileDeflection projectileDeflection = this.hitTargetOrDeflectSelf(entityHitResult);
				this.hasImpulse = true;
				if (this.getPierceLevel() > 0 && projectileDeflection == ProjectileDeflection.NONE) {
					continue;
				}
				break;
			}
		}
	}

	private void applyInertia(float inertia) {
		Vec3 vec3 = this.getDeltaMovement();
		this.setDeltaMovement(vec3.scale(inertia));
	}

	private void addBubbleParticles(Vec3 pos) {
		Vec3 vec3 = this.getDeltaMovement();

		for (int i = 0; i < 4; i++) {
			float f = 0.25F;
			this.level().addParticle(ParticleTypes.BUBBLE, pos.x - vec3.x * 0.25, pos.y - vec3.y * 0.25, pos.z - vec3.z * 0.25, vec3.x, vec3.y, vec3.z);
		}
	}

	@Override
	protected double getDefaultGravity() {
		return 0.05;
	}

	private boolean shouldFall() {
		return this.isInGround() && this.level().noCollision(new AABB(this.position(), this.position()).inflate(0.06));
	}

	private void startFalling() {
		this.setInGround(false);
		Vec3 vec3 = this.getDeltaMovement();
		this.setDeltaMovement(vec3.multiply(this.random.nextFloat() * 0.2F, this.random.nextFloat() * 0.2F, this.random.nextFloat() * 0.2F));
		this.life = 0;
	}

	protected boolean isInGround() {
		return this.entityData.get(IN_GROUND);
	}

	protected void setInGround(boolean inGround) {
		this.entityData.set(IN_GROUND, inGround);
	}

	@Override
	public boolean isPushedByFluid() {
		return !this.isInGround();
	}

	@Override
	public void move(MoverType type, Vec3 movement) {
		super.move(type, movement);
		if (type != MoverType.SELF && this.shouldFall()) {
			this.startFalling();
		}
	}

	protected void tickDespawn() {
		this.life++;
		if (this.life >= 1200) {
			this.discard();
		}
	}

	private void resetPiercedEntities() {
		if (this.piercedAndKilledEntities != null) {
			this.piercedAndKilledEntities.clear();
		}

		if (this.piercingIgnoreEntityIds != null) {
			this.piercingIgnoreEntityIds.clear();
		}
	}

	@Override
	protected void onItemBreak(Item item) {
		this.firedFromWeapon = null;
	}

	@Override
	public void onAboveBubbleColumn(boolean downwards, BlockPos pos) {
		if (!this.isInGround()) {
			super.onAboveBubbleColumn(downwards, pos);
		}
	}

	@Override
	public void onInsideBubbleColumn(boolean downwards) {
		if (!this.isInGround()) {
			super.onInsideBubbleColumn(downwards);
		}
	}

	@Override
	public void push(double x, double y, double z) {
		if (!this.isInGround()) {
			super.push(x, y, z);
		}
	}

	@Override
	protected void onHitEntity(EntityHitResult result) {
		super.onHitEntity(result);
		Entity entity = result.getEntity();
		float f = (float)this.getDeltaMovement().length();
		double d = this.baseDamage;
		Entity entity2 = this.getOwner();
		DamageSource damageSource = this.damageSources().arrow(this, (Entity)(entity2 != null ? entity2 : this));
		if (this.getWeaponItem() != null && this.level() instanceof ServerLevel serverLevel) {
			d = EnchantmentHelper.modifyDamage(serverLevel, this.getWeaponItem(), entity, damageSource, (float)d);
		}

		int i = Mth.ceil(Mth.clamp(f * d, 0.0, 2.147483647E9));
		if (this.getPierceLevel() > 0) {
			if (this.piercingIgnoreEntityIds == null) {
				this.piercingIgnoreEntityIds = new IntOpenHashSet(5);
			}

			if (this.piercedAndKilledEntities == null) {
				this.piercedAndKilledEntities = Lists.<Entity>newArrayListWithCapacity(5);
			}

			if (this.piercingIgnoreEntityIds.size() >= this.getPierceLevel() + 1) {
				this.discard();
				return;
			}

			this.piercingIgnoreEntityIds.add(entity.getId());
		}

		if (this.isCritArrow()) {
			long l = this.random.nextInt(i / 2 + 2);
			i = (int)Math.min(l + i, 2147483647L);
		}

		if (entity2 instanceof LivingEntity livingEntity) {
			livingEntity.setLastHurtMob(entity);
		}

		boolean bl = entity.getType() == EntityType.ENDERMAN;
		int j = entity.getRemainingFireTicks();
		if (this.isOnFire() && !bl) {
			entity.igniteForSeconds(5.0F);
		}

		if (entity.hurtOrSimulate(damageSource, i)) {
			if (bl) {
				return;
			}

			if (entity instanceof LivingEntity livingEntity2) {
				if (!this.level().isClientSide && this.getPierceLevel() <= 0) {
					livingEntity2.setArrowCount(livingEntity2.getArrowCount() + 1);
				}

				this.doKnockback(livingEntity2, damageSource);
				if (this.level() instanceof ServerLevel serverLevel2) {
					EnchantmentHelper.doPostAttackEffectsWithItemSource(serverLevel2, livingEntity2, damageSource, this.getWeaponItem());
				}

				this.doPostHurtEffects(livingEntity2);
				if (livingEntity2 instanceof Player && entity2 instanceof ServerPlayer serverPlayer && !this.isSilent() && livingEntity2 != serverPlayer) {
					serverPlayer.connection.send(new ClientboundGameEventPacket(ClientboundGameEventPacket.PLAY_ARROW_HIT_SOUND, 0.0F));
				}

				if (!entity.isAlive() && this.piercedAndKilledEntities != null) {
					this.piercedAndKilledEntities.add(livingEntity2);
				}

				if (!this.level().isClientSide && entity2 instanceof ServerPlayer serverPlayer) {
					if (this.piercedAndKilledEntities != null) {
						CriteriaTriggers.KILLED_BY_ARROW.trigger(serverPlayer, this.piercedAndKilledEntities, this.firedFromWeapon);
					} else if (!entity.isAlive()) {
						CriteriaTriggers.KILLED_BY_ARROW.trigger(serverPlayer, List.of(entity), this.firedFromWeapon);
					}
				}
			}

			this.playSound(this.soundEvent, 1.0F, 1.2F / (this.random.nextFloat() * 0.2F + 0.9F));
			if (this.getPierceLevel() <= 0) {
				this.discard();
			}
		} else {
			entity.setRemainingFireTicks(j);
			this.deflect(ProjectileDeflection.REVERSE, entity, this.getOwner(), false);
			this.setDeltaMovement(this.getDeltaMovement().scale(0.2));
			if (this.level() instanceof ServerLevel serverLevel3 && this.getDeltaMovement().lengthSqr() < 1.0E-7) {
				if (this.pickup == AbstractArrow.Pickup.ALLOWED) {
					this.spawnAtLocation(serverLevel3, this.getPickupItem(), 0.1F);
				}

				this.discard();
			}
		}
	}

	protected void doKnockback(LivingEntity entity, DamageSource damageSource) {
		double d = this.firedFromWeapon != null && this.level() instanceof ServerLevel serverLevel
			? EnchantmentHelper.modifyKnockback(serverLevel, this.firedFromWeapon, entity, damageSource, 0.0F)
			: 0.0F;
		if (d > 0.0) {
			double e = Math.max(0.0, 1.0 - entity.getAttributeValue(Attributes.KNOCKBACK_RESISTANCE));
			Vec3 vec3 = this.getDeltaMovement().multiply(1.0, 0.0, 1.0).normalize().scale(d * 0.6 * e);
			if (vec3.lengthSqr() > 0.0) {
				entity.push(vec3.x, 0.1, vec3.z);
			}
		}
	}

	@Override
	protected void onHitBlock(BlockHitResult result) {
		this.lastState = this.level().getBlockState(result.getBlockPos());
		super.onHitBlock(result);
		ItemStack itemStack = this.getWeaponItem();
		if (this.level() instanceof ServerLevel serverLevel && itemStack != null) {
			this.hitBlockEnchantmentEffects(serverLevel, result, itemStack);
		}

		Vec3 vec3 = this.getDeltaMovement();
		Vec3 vec32 = new Vec3(Math.signum(vec3.x), Math.signum(vec3.y), Math.signum(vec3.z));
		Vec3 vec33 = vec32.scale(0.05F);
		this.setPos(this.position().subtract(vec33));
		this.setDeltaMovement(Vec3.ZERO);
		this.playSound(this.getHitGroundSoundEvent(), 1.0F, 1.2F / (this.random.nextFloat() * 0.2F + 0.9F));
		this.setInGround(true);
		this.shakeTime = 7;
		this.setCritArrow(false);
		this.setPierceLevel((byte)0);
		this.setSoundEvent(SoundEvents.ARROW_HIT);
		this.resetPiercedEntities();
	}

	protected void hitBlockEnchantmentEffects(ServerLevel level, BlockHitResult hitResult, ItemStack stack) {
		Vec3 vec3 = hitResult.getBlockPos().clampLocationWithin(hitResult.getLocation());
		EnchantmentHelper.onHitBlock(
			level,
			stack,
			this.getOwner() instanceof LivingEntity livingEntity ? livingEntity : null,
			this,
			null,
			vec3,
			level.getBlockState(hitResult.getBlockPos()),
			item -> this.firedFromWeapon = null
		);
	}

	@Override
	public ItemStack getWeaponItem() {
		return this.firedFromWeapon;
	}

	/**
	 * The sound made when an entity is hit by this projectile
	 */
	protected SoundEvent getDefaultHitGroundSoundEvent() {
		return SoundEvents.ARROW_HIT;
	}

	protected final SoundEvent getHitGroundSoundEvent() {
		return this.soundEvent;
	}

	protected void doPostHurtEffects(LivingEntity target) {
	}

	/**
	 * Gets the EntityRayTraceResult representing the entity hit
	 */
	@Nullable
	protected EntityHitResult findHitEntity(Vec3 startVec, Vec3 endVec) {
		return ProjectileUtil.getEntityHitResult(
			this.level(), this, startVec, endVec, this.getBoundingBox().expandTowards(this.getDeltaMovement()).inflate(1.0), this::canHitEntity
		);
	}

	@Override
	protected boolean canHitEntity(Entity target) {
		return target instanceof Player && this.getOwner() instanceof Player player && !player.canHarmPlayer((Player)target)
			? false
			: super.canHitEntity(target) && (this.piercingIgnoreEntityIds == null || !this.piercingIgnoreEntityIds.contains(target.getId()));
	}

	@Override
	protected void addAdditionalSaveData(ValueOutput output) {
		super.addAdditionalSaveData(output);
		output.putShort("life", (short)this.life);
		output.storeNullable("inBlockState", BlockState.CODEC, this.lastState);
		output.putByte("shake", (byte)this.shakeTime);
		output.putBoolean("inGround", this.isInGround());
		output.store("pickup", AbstractArrow.Pickup.LEGACY_CODEC, this.pickup);
		output.putDouble("damage", this.baseDamage);
		output.putBoolean("crit", this.isCritArrow());
		output.putByte("PierceLevel", this.getPierceLevel());
		output.store("SoundEvent", BuiltInRegistries.SOUND_EVENT.byNameCodec(), this.soundEvent);
		output.store("item", ItemStack.CODEC, this.pickupItemStack);
		output.storeNullable("weapon", ItemStack.CODEC, this.firedFromWeapon);
	}

	@Override
	protected void readAdditionalSaveData(ValueInput input) {
		super.readAdditionalSaveData(input);
		this.life = input.getShortOr("life", (short)0);
		this.lastState = (BlockState)input.read("inBlockState", BlockState.CODEC).orElse(null);
		this.shakeTime = input.getByteOr("shake", (byte)0) & 255;
		this.setInGround(input.getBooleanOr("inGround", false));
		this.baseDamage = input.getDoubleOr("damage", 2.0);
		this.pickup = (AbstractArrow.Pickup)input.read("pickup", AbstractArrow.Pickup.LEGACY_CODEC).orElse(AbstractArrow.Pickup.DISALLOWED);
		this.setCritArrow(input.getBooleanOr("crit", false));
		this.setPierceLevel(input.getByteOr("PierceLevel", (byte)0));
		this.soundEvent = (SoundEvent)input.read("SoundEvent", BuiltInRegistries.SOUND_EVENT.byNameCodec()).orElse(this.getDefaultHitGroundSoundEvent());
		this.setPickupItemStack((ItemStack)input.read("item", ItemStack.CODEC).orElse(this.getDefaultPickupItem()));
		this.firedFromWeapon = (ItemStack)input.read("weapon", ItemStack.CODEC).orElse(null);
	}

	@Override
	public void setOwner(@Nullable Entity owner) {
		super.setOwner(owner);

		this.pickup = switch (owner) {
			case Player player when this.pickup == AbstractArrow.Pickup.DISALLOWED -> AbstractArrow.Pickup.ALLOWED;
			case OminousItemSpawner ominousItemSpawner -> AbstractArrow.Pickup.DISALLOWED;
			case null, default -> this.pickup;
		};
	}

	@Override
	public void playerTouch(Player player) {
		if (!this.level().isClientSide && (this.isInGround() || this.isNoPhysics()) && this.shakeTime <= 0) {
			if (this.tryPickup(player)) {
				player.take(this, 1);
				this.discard();
			}
		}
	}

	protected boolean tryPickup(Player player) {
		return switch (this.pickup) {
			case DISALLOWED -> false;
			case ALLOWED -> player.getInventory().add(this.getPickupItem());
			case CREATIVE_ONLY -> player.hasInfiniteMaterials();
		};
	}

	protected ItemStack getPickupItem() {
		return this.pickupItemStack.copy();
	}

	protected abstract ItemStack getDefaultPickupItem();

	@Override
	protected Entity.MovementEmission getMovementEmission() {
		return Entity.MovementEmission.NONE;
	}

	public ItemStack getPickupItemStackOrigin() {
		return this.pickupItemStack;
	}

	public void setBaseDamage(double baseDamage) {
		this.baseDamage = baseDamage;
	}

	@Override
	public boolean isAttackable() {
		return this.getType().is(EntityTypeTags.REDIRECTABLE_PROJECTILE);
	}

	/**
	 * Whether the arrow has a stream of critical hit particles flying behind it.
	 */
	public void setCritArrow(boolean critArrow) {
		this.setFlag(1, critArrow);
	}

	private void setPierceLevel(byte pierceLevel) {
		this.entityData.set(PIERCE_LEVEL, pierceLevel);
	}

	private void setFlag(int id, boolean value) {
		byte b = this.entityData.get(ID_FLAGS);
		if (value) {
			this.entityData.set(ID_FLAGS, (byte)(b | id));
		} else {
			this.entityData.set(ID_FLAGS, (byte)(b & ~id));
		}
	}

	protected void setPickupItemStack(ItemStack pickupItemStack) {
		if (!pickupItemStack.isEmpty()) {
			this.pickupItemStack = pickupItemStack;
		} else {
			this.pickupItemStack = this.getDefaultPickupItem();
		}
	}

	/**
	 * Whether the arrow has a stream of critical hit particles flying behind it.
	 */
	public boolean isCritArrow() {
		byte b = this.entityData.get(ID_FLAGS);
		return (b & 1) != 0;
	}

	public byte getPierceLevel() {
		return this.entityData.get(PIERCE_LEVEL);
	}

	public void setBaseDamageFromMob(float velocity) {
		this.setBaseDamage(velocity * 2.0F + this.random.triangle(this.level().getDifficulty().getId() * 0.11, 0.57425));
	}

	protected float getWaterInertia() {
		return 0.6F;
	}

	/**
	 * Sets if this arrow can noClip
	 */
	public void setNoPhysics(boolean noPhysics) {
		this.noPhysics = noPhysics;
		this.setFlag(2, noPhysics);
	}

	/**
	 * Whether the arrow can noClip
	 */
	public boolean isNoPhysics() {
		return !this.level().isClientSide ? this.noPhysics : (this.entityData.get(ID_FLAGS) & 2) != 0;
	}

	@Override
	public boolean isPickable() {
		return super.isPickable() && !this.isInGround();
	}

	@Override
	public SlotAccess getSlot(int slot) {
		return slot == 0 ? SlotAccess.of(this::getPickupItemStackOrigin, this::setPickupItemStack) : super.getSlot(slot);
	}

	@Override
	protected boolean shouldBounceOnWorldBorder() {
		return true;
	}

	public static enum Pickup {
		DISALLOWED,
		ALLOWED,
		CREATIVE_ONLY;

		public static final Codec<AbstractArrow.Pickup> LEGACY_CODEC = Codec.BYTE.xmap(AbstractArrow.Pickup::byOrdinal, pickup -> (byte)pickup.ordinal());

		public static AbstractArrow.Pickup byOrdinal(int ordinal) {
			if (ordinal < 0 || ordinal > values().length) {
				ordinal = 0;
			}

			return values()[ordinal];
		}
	}
}