mirror of
https://github.com/Minestom/Minestom.git
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1418 lines
46 KiB
Java
1418 lines
46 KiB
Java
package net.minestom.server.entity;
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import net.minestom.server.MinecraftServer;
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import net.minestom.server.Viewable;
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import net.minestom.server.chat.ColoredText;
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import net.minestom.server.collision.BoundingBox;
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import net.minestom.server.collision.CollisionUtils;
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import net.minestom.server.data.Data;
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import net.minestom.server.data.DataContainer;
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import net.minestom.server.event.Event;
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import net.minestom.server.event.EventCallback;
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import net.minestom.server.event.entity.EntityDeathEvent;
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import net.minestom.server.event.entity.EntitySpawnEvent;
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import net.minestom.server.event.entity.EntityTickEvent;
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import net.minestom.server.event.entity.EntityVelocityEvent;
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import net.minestom.server.event.handler.EventHandler;
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import net.minestom.server.instance.Chunk;
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import net.minestom.server.instance.Instance;
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import net.minestom.server.instance.InstanceManager;
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import net.minestom.server.instance.WorldBorder;
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import net.minestom.server.instance.block.CustomBlock;
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import net.minestom.server.network.packet.server.play.*;
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import net.minestom.server.thread.ThreadProvider;
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import net.minestom.server.utils.ArrayUtils;
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import net.minestom.server.utils.BlockPosition;
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import net.minestom.server.utils.Position;
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import net.minestom.server.utils.Vector;
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import net.minestom.server.utils.binary.BinaryWriter;
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import net.minestom.server.utils.callback.OptionalCallback;
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import net.minestom.server.utils.chunk.ChunkUtils;
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import net.minestom.server.utils.entity.EntityUtils;
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import net.minestom.server.utils.player.PlayerUtils;
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import net.minestom.server.utils.time.TimeUnit;
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import net.minestom.server.utils.validate.Check;
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import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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import java.util.*;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ConcurrentLinkedQueue;
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import java.util.concurrent.CopyOnWriteArraySet;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.function.Consumer;
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public abstract class Entity implements Viewable, EventHandler, DataContainer {
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private static final Map<Integer, Entity> entityById = new ConcurrentHashMap<>();
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private static final AtomicInteger lastEntityId = new AtomicInteger();
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// Metadata
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protected static final byte METADATA_BYTE = 0;
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protected static final byte METADATA_VARINT = 1;
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protected static final byte METADATA_FLOAT = 2;
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protected static final byte METADATA_STRING = 3;
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protected static final byte METADATA_CHAT = 4;
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protected static final byte METADATA_OPTCHAT = 5;
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protected static final byte METADATA_SLOT = 6;
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protected static final byte METADATA_BOOLEAN = 7;
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protected static final byte METADATA_ROTATION = 8;
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protected static final byte METADATA_POSITION = 9;
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protected static final byte METADATA_PARTICLE = 15;
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protected static final byte METADATA_POSE = 18;
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protected Instance instance;
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protected Position position;
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protected float lastX, lastY, lastZ;
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protected float cacheX, cacheY, cacheZ; // Used to synchronize with #getPosition
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protected float lastYaw, lastPitch;
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protected float cacheYaw, cachePitch;
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protected boolean onGround;
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private BoundingBox boundingBox;
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protected Entity vehicle;
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// Velocity
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protected Vector velocity = new Vector(); // Movement in block per second
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protected long lastVelocityUpdateTime; // Reset velocity to 0 after countdown
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private long velocityUpdatePeriod;
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protected float gravityDragPerTick;
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protected float eyeHeight;
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private boolean autoViewable;
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private final int id;
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private Data data;
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private final Set<Player> viewers = new CopyOnWriteArraySet<>();
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protected UUID uuid;
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private boolean isActive; // False if entity has only been instanced without being added somewhere
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private boolean removed;
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private boolean shouldRemove;
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private long scheduledRemoveTime;
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private final Set<Entity> passengers = new CopyOnWriteArraySet<>();
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private long lastUpdate;
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private final EntityType entityType;
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// Network synchronization
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private static final long SYNCHRONIZATION_DELAY = 1500; // In ms
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private long lastSynchronizationTime;
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// Events
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private final Map<Class<? extends Event>, Collection<EventCallback>> eventCallbacks = new ConcurrentHashMap<>();
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// Metadata
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protected boolean onFire;
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protected boolean crouched;
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protected boolean UNUSED_METADATA;
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protected boolean sprinting;
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protected boolean swimming;
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protected boolean invisible;
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protected boolean glowing;
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protected boolean usingElytra;
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protected int air = 300;
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protected ColoredText customName;
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protected boolean customNameVisible;
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protected boolean silent;
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protected boolean noGravity;
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protected Pose pose = Pose.STANDING;
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// list of scheduled tasks to be executed during the next entity tick
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protected final ConcurrentLinkedQueue<Consumer<Entity>> nextTick = new ConcurrentLinkedQueue<>();
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// Tick related
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private long ticks;
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private final EntityTickEvent tickEvent = new EntityTickEvent(this);
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public Entity(@NotNull EntityType entityType, @NotNull Position spawnPosition) {
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this.id = generateId();
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this.entityType = entityType;
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this.uuid = UUID.randomUUID();
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this.position = spawnPosition.clone();
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setBoundingBox(0, 0, 0);
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setAutoViewable(true);
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entityById.put(id, this);
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setVelocityUpdatePeriod(5);
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}
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/**
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* Schedules a task to be run during the next entity tick.
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* It ensures that the task will be executed in the same thread as the entity (depending of the {@link ThreadProvider}).
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*
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* @param callback the task to execute during the next entity tick
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*/
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public void scheduleNextTick(@NotNull Consumer<Entity> callback) {
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this.nextTick.add(callback);
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}
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public Entity(@NotNull EntityType entityType) {
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this(entityType, new Position());
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}
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/**
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* @param id the entity unique id ({@link #getEntityId()})
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* @return the entity having the specified id, null if not found
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*/
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@Nullable
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public static Entity getEntity(int id) {
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return entityById.getOrDefault(id, null);
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}
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private static int generateId() {
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return lastEntityId.incrementAndGet();
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}
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/**
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* Called each tick.
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*
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* @param time the time of update in milliseconds
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*/
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public abstract void update(long time);
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/**
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* Called when a new instance is set.
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*/
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public abstract void spawn();
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public boolean isOnGround() {
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return onGround || EntityUtils.isOnGround(this) /* backup for levitating entities */;
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}
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/**
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* Checks if now is a good time to send a velocity update packet.
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*
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* @param time the current time in milliseconds
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* @return true if the velocity update packet should be send
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*/
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protected boolean shouldSendVelocityUpdate(long time) {
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return (time - lastVelocityUpdateTime) >= velocityUpdatePeriod;
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}
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/**
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* Gets the period, in ms, between two velocity update packets.
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*
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* @return period, in ms, between two velocity update packets
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*/
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public long getVelocityUpdatePeriod() {
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return velocityUpdatePeriod;
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}
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/**
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* Sets the period, in ms, between two velocity update packets.
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*
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* @param velocityUpdatePeriod period, in ms, between two velocity update packets
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*/
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public void setVelocityUpdatePeriod(long velocityUpdatePeriod) {
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this.velocityUpdatePeriod = velocityUpdatePeriod;
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}
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/**
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* Teleports the entity only if the chunk at {@code position} is loaded or if
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* {@link Instance#hasEnabledAutoChunkLoad()} returns true.
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*
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* @param position the teleport position
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* @param callback the optional callback executed, even if auto chunk is not enabled
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*/
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public void teleport(@NotNull Position position, @Nullable Runnable callback) {
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Check.notNull(position, "Teleport position cannot be null");
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Check.stateCondition(instance == null, "You need to use Entity#setInstance before teleporting an entity!");
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final Runnable runnable = () -> {
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if (!this.position.isSimilar(position)) {
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refreshPosition(position.getX(), position.getY(), position.getZ());
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}
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if (!this.position.hasSimilarView(position)) {
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refreshView(position.getYaw(), position.getPitch());
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}
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sendSynchronization();
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OptionalCallback.execute(callback);
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};
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if (instance.hasEnabledAutoChunkLoad()) {
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instance.loadChunk(position, chunk -> runnable.run());
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} else {
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runnable.run();
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}
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}
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public void teleport(@NotNull Position position) {
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teleport(position, null);
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}
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/**
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* Changes the view of the entity.
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*
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* @param yaw the new yaw
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* @param pitch the new pitch
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*/
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public void setView(float yaw, float pitch) {
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refreshView(yaw, pitch);
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EntityRotationPacket entityRotationPacket = new EntityRotationPacket();
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entityRotationPacket.entityId = getEntityId();
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entityRotationPacket.yaw = yaw;
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entityRotationPacket.pitch = pitch;
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entityRotationPacket.onGround = onGround;
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EntityHeadLookPacket entityHeadLookPacket = new EntityHeadLookPacket();
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entityHeadLookPacket.entityId = getEntityId();
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entityHeadLookPacket.yaw = yaw;
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sendPacketToViewersAndSelf(entityHeadLookPacket);
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sendPacketToViewersAndSelf(entityRotationPacket);
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}
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/**
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* Changes the view of the entity.
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* Only the yaw and pitch are used.
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*
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* @param position the new view
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*/
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public void setView(@NotNull Position position) {
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setView(position.getYaw(), position.getPitch());
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}
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/**
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* When set to true, the entity will automatically get new viewers when they come too close
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* This can be use to complete control over which player can see it, without having to deal with
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* raw packets.
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* <p>
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* True by default for all entities.
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* When set to false, it is important to mention that the players will not be removed automatically from its viewers
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* list, you would have to do that manually when being too far.
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*
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* @return true if the entity is automatically viewable for close players, false otherwise
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*/
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public boolean isAutoViewable() {
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return autoViewable;
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}
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/**
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* Makes the entity auto viewable or only manually.
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*
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* @param autoViewable should the entity be automatically viewable for close players
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* @see #isAutoViewable()
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*/
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public void setAutoViewable(boolean autoViewable) {
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this.autoViewable = autoViewable;
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}
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@Override
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public boolean addViewer(@NotNull Player player) {
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Check.notNull(player, "Viewer cannot be null");
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boolean result = this.viewers.add(player);
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if (!result)
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return false;
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player.viewableEntities.add(this);
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return true;
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}
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@Override
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public boolean removeViewer(@NotNull Player player) {
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Check.notNull(player, "Viewer cannot be null");
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if (!viewers.remove(player))
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return false;
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DestroyEntitiesPacket destroyEntitiesPacket = new DestroyEntitiesPacket();
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destroyEntitiesPacket.entityIds = new int[]{getEntityId()};
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player.getPlayerConnection().sendPacket(destroyEntitiesPacket);
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player.viewableEntities.remove(this);
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return true;
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}
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@NotNull
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@Override
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public Set<Player> getViewers() {
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return Collections.unmodifiableSet(viewers);
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}
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@Override
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public Data getData() {
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return data;
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}
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@Override
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public void setData(@Nullable Data data) {
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this.data = data;
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}
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/**
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* Updates the entity, called every tick.
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*
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* @param time the update time in milliseconds
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*/
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public void tick(long time) {
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if (instance == null)
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return;
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if (scheduledRemoveTime != 0) { // Any entity with scheduled remove does not update
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final boolean finished = time >= scheduledRemoveTime;
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if (finished) {
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remove();
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}
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return;
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}
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if (shouldRemove()) {
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remove();
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return;
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}
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BlockPosition blockPosition = position.toBlockPosition();
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if (!ChunkUtils.isLoaded(instance, position.getX(), position.getZ()) || !ChunkUtils.isLoaded(instance, blockPosition.getX(), blockPosition.getZ())) {
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// No update for entities in unloaded chunk
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return;
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}
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// scheduled tasks
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if (!nextTick.isEmpty()) {
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Consumer<Entity> callback;
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while ((callback = nextTick.poll()) != null) {
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callback.accept(this);
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}
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}
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// Synchronization with updated fields in #getPosition()
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{
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// X/Y/Z axis
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if (cacheX != position.getX() ||
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cacheY != position.getY() ||
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cacheZ != position.getZ()) {
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teleport(position);
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}
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// Yaw/Pitch
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if (cacheYaw != position.getYaw() ||
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cachePitch != position.getPitch()) {
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setView(position);
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}
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}
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if (shouldUpdate(time)) {
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this.lastUpdate = time;
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// Velocity
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final boolean applyVelocity = !PlayerUtils.isNettyClient(this) ||
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(PlayerUtils.isNettyClient(this) && hasVelocity());
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if (applyVelocity) {
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final float tps = MinecraftServer.TICK_PER_SECOND;
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float newX = position.getX() + velocity.getX() / tps;
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float newY = position.getY() + velocity.getY() / tps;
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float newZ = position.getZ() + velocity.getZ() / tps;
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Position newPosition = new Position(newX, newY, newZ);
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if (!noGravity) {
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velocity.setY(velocity.getY() - gravityDragPerTick * tps);
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}
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Vector newVelocityOut = new Vector();
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final Vector deltaPos = new Vector(
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getVelocity().getX() / tps,
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getVelocity().getY() / tps,
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getVelocity().getZ() / tps
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);
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onGround = CollisionUtils.handlePhysics(this, deltaPos, newPosition, newVelocityOut);
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// Check chunk
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if (!ChunkUtils.isLoaded(instance, newPosition.getX(), newPosition.getZ())) {
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return;
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}
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// World border collision
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{
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final WorldBorder worldBorder = instance.getWorldBorder();
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final WorldBorder.CollisionAxis collisionAxis = worldBorder.getCollisionAxis(newPosition);
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switch (collisionAxis) {
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case NONE:
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// Apply velocity + gravity
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refreshPosition(newPosition);
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break;
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case BOTH:
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// Apply Y velocity/gravity
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refreshPosition(position.getX(), newPosition.getY(), position.getZ());
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break;
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case X:
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// Apply Y/Z velocity/gravity
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refreshPosition(position.getX(), newPosition.getY(), newPosition.getZ());
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break;
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case Z:
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// Apply X/Y velocity/gravity
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refreshPosition(newPosition.getX(), newPosition.getY(), position.getZ());
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break;
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}
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}
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velocity.copy(newVelocityOut);
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velocity.multiply(tps);
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float drag;
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if (onGround) {
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final CustomBlock customBlock =
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instance.getCustomBlock(blockPosition);
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if (customBlock != null) {
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// Custom drag
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drag = customBlock.getDrag(instance, blockPosition);
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} else {
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// Default ground drag
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drag = 0.5f;
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}
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// Stop player velocity
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if (PlayerUtils.isNettyClient(this)) {
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velocity.zero();
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}
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} else {
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drag = 0.98f; // air drag
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}
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velocity.setX(velocity.getX() * drag);
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velocity.setZ(velocity.getZ() * drag);
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sendSynchronization();
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if (shouldSendVelocityUpdate(time)) {
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sendVelocityPacket();
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lastVelocityUpdateTime = time;
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}
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}
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// handle block contacts
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final int minX = (int) Math.floor(boundingBox.getMinX());
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final int maxX = (int) Math.ceil(boundingBox.getMaxX());
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final int minY = (int) Math.floor(boundingBox.getMinY());
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final int maxY = (int) Math.ceil(boundingBox.getMaxY());
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final int minZ = (int) Math.floor(boundingBox.getMinZ());
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final int maxZ = (int) Math.ceil(boundingBox.getMaxZ());
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final BlockPosition tmpPosition = new BlockPosition(0, 0, 0); // allow reuse
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for (int y = minY; y <= maxY; y++) {
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for (int x = minX; x <= maxX; x++) {
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for (int z = minZ; z <= maxZ; z++) {
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final Chunk chunk = instance.getChunkAt(x, z);
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if (!ChunkUtils.isLoaded(chunk))
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continue;
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final CustomBlock customBlock = chunk.getCustomBlock(x, y, z);
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if (customBlock != null) {
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tmpPosition.setX(x);
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tmpPosition.setY(y);
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tmpPosition.setZ(z);
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// checks that we are actually in the block, and not just here because of a rounding error
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if (boundingBox.intersect(tmpPosition)) {
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// TODO: replace with check with custom block bounding box
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customBlock.handleContact(instance, tmpPosition, this);
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}
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}
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}
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}
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}
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handleVoid();
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// Call the abstract update method
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update(time);
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ticks++;
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callEvent(EntityTickEvent.class, tickEvent); // reuse tickEvent to avoid recreating it each tick
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}
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// Scheduled synchronization
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if (time - lastSynchronizationTime >= SYNCHRONIZATION_DELAY) {
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lastSynchronizationTime = time;
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sendSynchronization();
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}
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if (shouldRemove()) {
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remove();
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}
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}
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/**
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* Equivalent to <code>sendPacketsToViewers(getVelocityPacket());</code>.
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*/
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public void sendVelocityPacket() {
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sendPacketsToViewers(getVelocityPacket());
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}
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|
|
|
/**
|
|
* Gets the number of ticks this entity has been active for.
|
|
*
|
|
* @return the number of ticks this entity has been active for
|
|
*/
|
|
public long getAliveTicks() {
|
|
return ticks;
|
|
}
|
|
|
|
/**
|
|
* How does this entity handle being in the void?
|
|
*/
|
|
protected void handleVoid() {
|
|
// Kill if in void
|
|
if (getInstance().isInVoid(this.position)) {
|
|
remove();
|
|
}
|
|
}
|
|
|
|
@NotNull
|
|
@Override
|
|
public Map<Class<? extends Event>, Collection<EventCallback>> getEventCallbacksMap() {
|
|
return eventCallbacks;
|
|
}
|
|
|
|
@Override
|
|
public <E extends Event> void callEvent(@NotNull Class<E> eventClass, @NotNull E event) {
|
|
EventHandler.super.callEvent(eventClass, event);
|
|
|
|
// Call the same event for the current entity instance
|
|
if (instance != null) {
|
|
instance.callEvent(eventClass, event);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Each entity has an unique id which will change after a restart.
|
|
* <p>
|
|
* All entities can be retrieved by calling {@link Entity#getEntity(int)}.
|
|
*
|
|
* @return the unique entity id
|
|
*/
|
|
public int getEntityId() {
|
|
return id;
|
|
}
|
|
|
|
/**
|
|
* Returns the entity type.
|
|
*
|
|
* @return the entity type
|
|
*/
|
|
public EntityType getEntityType() {
|
|
return entityType;
|
|
}
|
|
|
|
/**
|
|
* Gets the entity {@link UUID}.
|
|
*
|
|
* @return the entity unique id
|
|
*/
|
|
@NotNull
|
|
public UUID getUuid() {
|
|
return uuid;
|
|
}
|
|
|
|
/**
|
|
* Changes the internal entity UUID, mostly unsafe.
|
|
*
|
|
* @param uuid the new entity uuid
|
|
*/
|
|
protected void setUuid(@NotNull UUID uuid) {
|
|
this.uuid = uuid;
|
|
}
|
|
|
|
/**
|
|
* Returns false just after instantiation, set to true after calling {@link #setInstance(Instance)}.
|
|
*
|
|
* @return true if the entity has been linked to an instance, false otherwise
|
|
*/
|
|
public boolean isActive() {
|
|
return isActive;
|
|
}
|
|
|
|
/**
|
|
* Is used to check collision with coordinates or other blocks/entities.
|
|
*
|
|
* @return the entity bounding box
|
|
*/
|
|
@NotNull
|
|
public BoundingBox getBoundingBox() {
|
|
return boundingBox;
|
|
}
|
|
|
|
/**
|
|
* Changes the internal entity bounding box.
|
|
* <p>
|
|
* WARNING: this does not change the entity hit-box which is client-side.
|
|
*
|
|
* @param x the bounding box X size
|
|
* @param y the bounding box Y size
|
|
* @param z the bounding box Z size
|
|
*/
|
|
public void setBoundingBox(float x, float y, float z) {
|
|
this.boundingBox = new BoundingBox(this, x, y, z);
|
|
}
|
|
|
|
/**
|
|
* Convenient method to get the entity current chunk.
|
|
*
|
|
* @return the entity chunk, can be null even if unlikely
|
|
*/
|
|
@Nullable
|
|
public Chunk getChunk() {
|
|
return instance.getChunkAt(lastX, lastZ);
|
|
}
|
|
|
|
/**
|
|
* Gets the entity current instance.
|
|
*
|
|
* @return the entity instance
|
|
*/
|
|
public Instance getInstance() {
|
|
return instance;
|
|
}
|
|
|
|
/**
|
|
* Changes the entity instance.
|
|
*
|
|
* @param instance the new instance of the entity
|
|
* @throws NullPointerException if {@code instance} is null
|
|
* @throws IllegalStateException if {@code instance} has not been registered in {@link InstanceManager}
|
|
*/
|
|
public void setInstance(@NotNull Instance instance) {
|
|
Check.notNull(instance, "instance cannot be null!");
|
|
Check.stateCondition(!instance.isRegistered(),
|
|
"Instances need to be registered, please use InstanceManager#registerInstance or InstanceManager#registerSharedInstance");
|
|
|
|
if (this.instance != null) {
|
|
this.instance.removeEntity(this);
|
|
}
|
|
|
|
this.isActive = true;
|
|
this.instance = instance;
|
|
instance.addEntity(this);
|
|
spawn();
|
|
EntitySpawnEvent entitySpawnEvent = new EntitySpawnEvent(this, instance);
|
|
callEvent(EntitySpawnEvent.class, entitySpawnEvent);
|
|
}
|
|
|
|
/**
|
|
* Gets the entity current velocity.
|
|
*
|
|
* @return the entity current velocity
|
|
*/
|
|
@NotNull
|
|
public Vector getVelocity() {
|
|
return velocity;
|
|
}
|
|
|
|
/**
|
|
* Changes the entity velocity and calls {@link EntityVelocityEvent}.
|
|
* <p>
|
|
* The final velocity can be cancelled or modified by the event.
|
|
*
|
|
* @param velocity the new entity velocity
|
|
*/
|
|
public void setVelocity(@NotNull Vector velocity) {
|
|
EntityVelocityEvent entityVelocityEvent = new EntityVelocityEvent(this, velocity);
|
|
callCancellableEvent(EntityVelocityEvent.class, entityVelocityEvent, () -> {
|
|
this.velocity.copy(entityVelocityEvent.getVelocity());
|
|
sendPacketToViewersAndSelf(getVelocityPacket());
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Gets if the entity currently has a velocity applied.
|
|
*
|
|
* @return true if velocity is not set to 0
|
|
*/
|
|
public boolean hasVelocity() {
|
|
return velocity.getX() != 0 ||
|
|
velocity.getY() != 0 ||
|
|
velocity.getZ() != 0;
|
|
}
|
|
|
|
/**
|
|
* Changes the gravity of the entity.
|
|
*
|
|
* @param gravityDragPerTick the gravity drag per tick
|
|
*/
|
|
public void setGravity(float gravityDragPerTick) {
|
|
this.gravityDragPerTick = gravityDragPerTick;
|
|
}
|
|
|
|
/**
|
|
* Gets the distance between two entities.
|
|
*
|
|
* @param entity the entity to get the distance from
|
|
* @return the distance between this and {@code entity}
|
|
*/
|
|
public float getDistance(@NotNull Entity entity) {
|
|
Check.notNull(entity, "Entity cannot be null");
|
|
return getPosition().getDistance(entity.getPosition());
|
|
}
|
|
|
|
/**
|
|
* Gets the entity vehicle or null.
|
|
*
|
|
* @return the entity vehicle, or null if there is not any
|
|
*/
|
|
@Nullable
|
|
public Entity getVehicle() {
|
|
return vehicle;
|
|
}
|
|
|
|
/**
|
|
* Adds a new passenger to this entity.
|
|
*
|
|
* @param entity the new passenger
|
|
* @throws NullPointerException if {@code entity} is null
|
|
* @throws IllegalStateException if {@link #getInstance()} returns null
|
|
*/
|
|
public void addPassenger(@NotNull Entity entity) {
|
|
Check.notNull(entity, "Passenger cannot be null");
|
|
Check.stateCondition(instance == null, "You need to set an instance using Entity#setInstance");
|
|
|
|
if (entity.getVehicle() != null) {
|
|
entity.getVehicle().removePassenger(entity);
|
|
}
|
|
|
|
this.passengers.add(entity);
|
|
entity.vehicle = this;
|
|
|
|
sendPacketToViewersAndSelf(getPassengersPacket());
|
|
}
|
|
|
|
/**
|
|
* Removes a passenger to this entity.
|
|
*
|
|
* @param entity the passenger to remove
|
|
* @throws NullPointerException if {@code entity} is null
|
|
* @throws IllegalStateException if {@link #getInstance()} returns null
|
|
*/
|
|
public void removePassenger(@NotNull Entity entity) {
|
|
Check.notNull(entity, "Passenger cannot be null");
|
|
Check.stateCondition(instance == null, "You need to set an instance using Entity#setInstance");
|
|
|
|
if (!passengers.remove(entity))
|
|
return;
|
|
entity.vehicle = null;
|
|
sendPacketToViewersAndSelf(getPassengersPacket());
|
|
}
|
|
|
|
/**
|
|
* Gets if the entity has any passenger.
|
|
*
|
|
* @return true if the entity has any passenger, false otherwise
|
|
*/
|
|
public boolean hasPassenger() {
|
|
return !passengers.isEmpty();
|
|
}
|
|
|
|
/**
|
|
* Gets the entity passengers.
|
|
*
|
|
* @return an unmodifiable list containing all the entity passengers
|
|
*/
|
|
@NotNull
|
|
public Set<Entity> getPassengers() {
|
|
return Collections.unmodifiableSet(passengers);
|
|
}
|
|
|
|
@NotNull
|
|
protected SetPassengersPacket getPassengersPacket() {
|
|
SetPassengersPacket passengersPacket = new SetPassengersPacket();
|
|
passengersPacket.vehicleEntityId = getEntityId();
|
|
|
|
int[] passengers = new int[this.passengers.size()];
|
|
int counter = 0;
|
|
for (Entity passenger : this.passengers) {
|
|
passengers[counter++] = passenger.getEntityId();
|
|
}
|
|
|
|
passengersPacket.passengersId = passengers;
|
|
return passengersPacket;
|
|
}
|
|
|
|
/**
|
|
* Entity statuses can be found <a href="https://wiki.vg/Entity_statuses">here</a>.
|
|
*
|
|
* @param status the status to trigger
|
|
*/
|
|
public void triggerStatus(byte status) {
|
|
EntityStatusPacket statusPacket = new EntityStatusPacket();
|
|
statusPacket.entityId = getEntityId();
|
|
statusPacket.status = status;
|
|
sendPacketToViewersAndSelf(statusPacket);
|
|
}
|
|
|
|
/**
|
|
* Gets if the entity is on fire.
|
|
*
|
|
* @return true if the entity is in fire, false otherwise
|
|
*/
|
|
public boolean isOnFire() {
|
|
return onFire;
|
|
}
|
|
|
|
/**
|
|
* Sets the entity in fire visually.
|
|
* <p>
|
|
* WARNING: if you want to apply damage or specify a duration,
|
|
* see {@link LivingEntity#setFireForDuration(int, TimeUnit)}.
|
|
*
|
|
* @param fire should the entity be set in fire
|
|
*/
|
|
public void setOnFire(boolean fire) {
|
|
this.onFire = fire;
|
|
sendMetadataIndex(0);
|
|
}
|
|
|
|
/**
|
|
* Gets if the entity is invisible or not.
|
|
*
|
|
* @return true if the entity is invisible, false otherwise
|
|
*/
|
|
public boolean isInvisible() {
|
|
return invisible;
|
|
}
|
|
|
|
/**
|
|
* Changes the internal invisible value and send a {@link EntityMetaDataPacket}
|
|
* to make visible or invisible the entity to its viewers.
|
|
*
|
|
* @param invisible true to set the entity invisible, false otherwise
|
|
*/
|
|
public void setInvisible(boolean invisible) {
|
|
this.invisible = invisible;
|
|
sendMetadataIndex(0);
|
|
}
|
|
|
|
/**
|
|
* Gets if the entity is glowing or not.
|
|
*
|
|
* @return true if the entity is glowing, false otherwise
|
|
*/
|
|
public boolean isGlowing() {
|
|
return glowing;
|
|
}
|
|
|
|
/**
|
|
* Sets or remove the entity glowing effect.
|
|
*
|
|
* @param glowing true to make the entity glows, false otherwise
|
|
*/
|
|
public void setGlowing(boolean glowing) {
|
|
this.glowing = glowing;
|
|
sendMetadataIndex(0);
|
|
}
|
|
|
|
/**
|
|
* Gets the entity custom name.
|
|
*
|
|
* @return the custom name of the entity, null if there is not
|
|
*/
|
|
public ColoredText getCustomName() {
|
|
return customName;
|
|
}
|
|
|
|
/**
|
|
* Changes the entity custom name.
|
|
*
|
|
* @param customName the custom name of the entity, null to remove it
|
|
*/
|
|
public void setCustomName(ColoredText customName) {
|
|
this.customName = customName;
|
|
sendMetadataIndex(2);
|
|
}
|
|
|
|
/**
|
|
* Gets the custom name visible metadata field.
|
|
*
|
|
* @return true if the custom name is visible, false otherwise
|
|
*/
|
|
public boolean isCustomNameVisible() {
|
|
return customNameVisible;
|
|
}
|
|
|
|
/**
|
|
* Changes the internal custom name visible field and send a {@link EntityMetaDataPacket}
|
|
* to update the entity state to its viewers.
|
|
*
|
|
* @param customNameVisible true to make the custom name visible, false otherwise
|
|
*/
|
|
public void setCustomNameVisible(boolean customNameVisible) {
|
|
this.customNameVisible = customNameVisible;
|
|
sendMetadataIndex(3);
|
|
}
|
|
|
|
public boolean isSilent() {
|
|
return silent;
|
|
}
|
|
|
|
public void setSilent(boolean silent) {
|
|
this.silent = silent;
|
|
sendMetadataIndex(4);
|
|
}
|
|
|
|
/**
|
|
* Changes the noGravity metadata field and change the gravity behaviour accordingly.
|
|
*
|
|
* @param noGravity should the entity ignore gravity
|
|
*/
|
|
public void setNoGravity(boolean noGravity) {
|
|
this.noGravity = noGravity;
|
|
sendMetadataIndex(5);
|
|
}
|
|
|
|
/**
|
|
* Gets the noGravity metadata field.
|
|
*
|
|
* @return true if the entity ignore gravity, false otherwise
|
|
*/
|
|
public boolean hasNoGravity() {
|
|
return noGravity;
|
|
}
|
|
|
|
/**
|
|
* Used to refresh the entity and its passengers position
|
|
* - put the entity in the right instance chunk
|
|
* - update the viewable chunks (load and unload)
|
|
* - add/remove players from the viewers list if {@link #isAutoViewable()} is enabled
|
|
* <p>
|
|
* WARNING: unsafe, should only be used internally in Minestom. Use {@link #teleport(Position)} instead.
|
|
*
|
|
* @param x new position X
|
|
* @param y new position Y
|
|
* @param z new position Z
|
|
*/
|
|
public void refreshPosition(float x, float y, float z) {
|
|
this.lastX = position.getX();
|
|
this.lastY = position.getY();
|
|
this.lastZ = position.getZ();
|
|
position.setX(x);
|
|
position.setY(y);
|
|
position.setZ(z);
|
|
this.cacheX = x;
|
|
this.cacheY = y;
|
|
this.cacheZ = z;
|
|
|
|
if (hasPassenger()) {
|
|
for (Entity passenger : getPassengers()) {
|
|
passenger.refreshPosition(x, y, z);
|
|
}
|
|
}
|
|
|
|
final Instance instance = getInstance();
|
|
if (instance != null) {
|
|
final Chunk lastChunk = instance.getChunkAt(lastX, lastZ);
|
|
final Chunk newChunk = instance.getChunkAt(x, z);
|
|
if (lastChunk != null && newChunk != null && lastChunk != newChunk) {
|
|
synchronized (instance) {
|
|
instance.removeEntityFromChunk(this, lastChunk);
|
|
instance.addEntityToChunk(this, newChunk);
|
|
}
|
|
updateView(lastChunk, newChunk);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param position the new position
|
|
* @see #refreshPosition(float, float, float)
|
|
*/
|
|
public void refreshPosition(@NotNull Position position) {
|
|
refreshPosition(position.getX(), position.getY(), position.getZ());
|
|
}
|
|
|
|
/**
|
|
* Manages viewable entities automatically if {@link #isAutoViewable()} is enabled.
|
|
* <p>
|
|
* Called by {@link #refreshPosition(float, float, float)} when the new position is in a different {@link Chunk}.
|
|
*
|
|
* @param lastChunk the previous {@link Chunk} of this entity
|
|
* @param newChunk the new {@link Chunk} of this entity
|
|
*/
|
|
private void updateView(@NotNull Chunk lastChunk, @NotNull Chunk newChunk) {
|
|
final boolean isPlayer = this instanceof Player;
|
|
|
|
if (isPlayer)
|
|
((Player) this).onChunkChange(newChunk); // Refresh loaded chunk
|
|
|
|
// Refresh entity viewable list
|
|
final int entityViewDistance = MinecraftServer.getEntityViewDistance();
|
|
final long[] lastVisibleChunksEntity = ChunkUtils.getChunksInRange(new Position(16 * lastChunk.getChunkX(), 0, 16 * lastChunk.getChunkZ()), entityViewDistance);
|
|
final long[] updatedVisibleChunksEntity = ChunkUtils.getChunksInRange(new Position(16 * newChunk.getChunkX(), 0, 16 * newChunk.getChunkZ()), entityViewDistance);
|
|
|
|
// Remove from previous chunks
|
|
final int[] oldChunksEntity = ArrayUtils.getDifferencesBetweenArray(lastVisibleChunksEntity, updatedVisibleChunksEntity);
|
|
for (int index : oldChunksEntity) {
|
|
final long chunkIndex = lastVisibleChunksEntity[index];
|
|
final int chunkX = ChunkUtils.getChunkCoordX(chunkIndex);
|
|
final int chunkZ = ChunkUtils.getChunkCoordZ(chunkIndex);
|
|
final Chunk chunk = instance.getChunk(chunkX, chunkZ);
|
|
if (chunk == null)
|
|
continue;
|
|
instance.getChunkEntities(chunk).forEach(ent -> {
|
|
if (ent instanceof Player) {
|
|
final Player player = (Player) ent;
|
|
if (isAutoViewable())
|
|
removeViewer(player);
|
|
if (isPlayer) {
|
|
player.removeViewer((Player) this);
|
|
}
|
|
} else if (isPlayer) {
|
|
ent.removeViewer((Player) this);
|
|
}
|
|
});
|
|
}
|
|
|
|
// Add to new chunks
|
|
final int[] newChunksEntity = ArrayUtils.getDifferencesBetweenArray(updatedVisibleChunksEntity, lastVisibleChunksEntity);
|
|
for (int index : newChunksEntity) {
|
|
final long chunkIndex = updatedVisibleChunksEntity[index];
|
|
final int chunkX = ChunkUtils.getChunkCoordX(chunkIndex);
|
|
final int chunkZ = ChunkUtils.getChunkCoordZ(chunkIndex);
|
|
final Chunk chunk = instance.getChunk(chunkX, chunkZ);
|
|
if (chunk == null)
|
|
continue;
|
|
instance.getChunkEntities(chunk).forEach(ent -> {
|
|
if (ent instanceof Player) {
|
|
Player player = (Player) ent;
|
|
if (isAutoViewable())
|
|
addViewer(player);
|
|
if (this instanceof Player) {
|
|
player.addViewer((Player) this);
|
|
}
|
|
} else if (isPlayer) {
|
|
ent.addViewer((Player) this);
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Updates the entity view internally.
|
|
* <p>
|
|
* Warning: you probably want to use {@link #setView(float, float)}.
|
|
*
|
|
* @param yaw the yaw
|
|
* @param pitch the pitch
|
|
*/
|
|
public void refreshView(float yaw, float pitch) {
|
|
this.lastYaw = position.getYaw();
|
|
this.lastPitch = position.getPitch();
|
|
position.setYaw(yaw);
|
|
position.setPitch(pitch);
|
|
this.cacheYaw = yaw;
|
|
this.cachePitch = pitch;
|
|
}
|
|
|
|
/**
|
|
* Makes the entity sneak.
|
|
* <p>
|
|
* WARNING: this will not work for the client itself.
|
|
*
|
|
* @param sneaking true to make the entity sneak
|
|
*/
|
|
public void setSneaking(boolean sneaking) {
|
|
this.crouched = sneaking;
|
|
this.pose = sneaking ? Pose.SNEAKING : Pose.STANDING;
|
|
sendMetadataIndex(0);
|
|
sendMetadataIndex(6);
|
|
}
|
|
|
|
/**
|
|
* Makes the entity sprint.
|
|
* <p>
|
|
* WARNING: this will not work on the client itself.
|
|
*
|
|
* @param sprinting true to make the entity sprint
|
|
*/
|
|
public void setSprinting(boolean sprinting) {
|
|
this.sprinting = sprinting;
|
|
sendMetadataIndex(0);
|
|
}
|
|
|
|
/**
|
|
* Gets the entity position.
|
|
*
|
|
* @return the current position of the entity
|
|
*/
|
|
public Position getPosition() {
|
|
return position;
|
|
}
|
|
|
|
/**
|
|
* Gets the entity eye height.
|
|
*
|
|
* @return the entity eye height
|
|
*/
|
|
public float getEyeHeight() {
|
|
return eyeHeight;
|
|
}
|
|
|
|
/**
|
|
* Changes the entity eye height.
|
|
*
|
|
* @param eyeHeight the entity eye height
|
|
*/
|
|
public void setEyeHeight(float eyeHeight) {
|
|
this.eyeHeight = eyeHeight;
|
|
}
|
|
|
|
/**
|
|
* Gets if this entity is in the same chunk as the specified position.
|
|
*
|
|
* @param position the checked position chunk
|
|
* @return true if the entity is in the same chunk as {@code position}
|
|
*/
|
|
public boolean sameChunk(@NotNull Position position) {
|
|
Check.notNull(position, "Position cannot be null");
|
|
final Position pos = getPosition();
|
|
final int chunkX1 = ChunkUtils.getChunkCoordinate((int) Math.floor(pos.getX()));
|
|
final int chunkZ1 = ChunkUtils.getChunkCoordinate((int) Math.floor(pos.getZ()));
|
|
|
|
final int chunkX2 = ChunkUtils.getChunkCoordinate((int) Math.floor(position.getX()));
|
|
final int chunkZ2 = ChunkUtils.getChunkCoordinate((int) Math.floor(position.getZ()));
|
|
|
|
return chunkX1 == chunkX2 && chunkZ1 == chunkZ2;
|
|
}
|
|
|
|
/**
|
|
* Gets if the entity is in the same chunk as another.
|
|
*
|
|
* @param entity the entity to check
|
|
* @return true if both entities are in the same chunk, false otherwise
|
|
*/
|
|
public boolean sameChunk(@NotNull Entity entity) {
|
|
return sameChunk(entity.getPosition());
|
|
}
|
|
|
|
/**
|
|
* Removes the entity from the server immediately.
|
|
* <p>
|
|
* WARNING: this do not trigger the {@link EntityDeathEvent} event.
|
|
*/
|
|
public void remove() {
|
|
this.removed = true;
|
|
this.shouldRemove = true;
|
|
entityById.remove(id);
|
|
if (instance != null)
|
|
instance.removeEntity(this);
|
|
}
|
|
|
|
/**
|
|
* Gets if this entity has been removed.
|
|
*
|
|
* @return true if this entity is removed
|
|
*/
|
|
public boolean isRemoved() {
|
|
return removed;
|
|
}
|
|
|
|
/**
|
|
* Triggers {@link #remove()} after the specified time.
|
|
*
|
|
* @param delay the time before removing the entity
|
|
* @param timeUnit the unit of the delay
|
|
*/
|
|
public void scheduleRemove(long delay, @NotNull TimeUnit timeUnit) {
|
|
delay = timeUnit.toMilliseconds(delay);
|
|
|
|
if (delay == 0) { // Cancel the scheduled remove
|
|
this.scheduledRemoveTime = 0;
|
|
return;
|
|
}
|
|
this.scheduledRemoveTime = System.currentTimeMillis() + delay;
|
|
}
|
|
|
|
/**
|
|
* Gets if the entity removal has been scheduled with {@link #scheduleRemove(long, TimeUnit)}.
|
|
*
|
|
* @return true if the entity removal has been scheduled
|
|
*/
|
|
public boolean isRemoveScheduled() {
|
|
return scheduledRemoveTime != 0;
|
|
}
|
|
|
|
@NotNull
|
|
protected EntityVelocityPacket getVelocityPacket() {
|
|
final float strength = 8000f / MinecraftServer.TICK_PER_SECOND;
|
|
EntityVelocityPacket velocityPacket = new EntityVelocityPacket();
|
|
velocityPacket.entityId = getEntityId();
|
|
velocityPacket.velocityX = (short) (velocity.getX() * strength);
|
|
velocityPacket.velocityY = (short) (velocity.getY() * strength);
|
|
velocityPacket.velocityZ = (short) (velocity.getZ() * strength);
|
|
return velocityPacket;
|
|
}
|
|
|
|
/**
|
|
* Gets an {@link EntityMetaDataPacket} sent when adding viewers. Used for synchronization.
|
|
*
|
|
* @return The {@link EntityMetaDataPacket} related to this entity
|
|
*/
|
|
@NotNull
|
|
public EntityMetaDataPacket getMetadataPacket() {
|
|
EntityMetaDataPacket metaDataPacket = new EntityMetaDataPacket();
|
|
metaDataPacket.entityId = getEntityId();
|
|
metaDataPacket.consumer = getMetadataConsumer();
|
|
return metaDataPacket;
|
|
}
|
|
|
|
/**
|
|
* Should be override when wanting to add a new metadata index
|
|
*
|
|
* @return The consumer used to write {@link EntityMetaDataPacket} in {@link #getMetadataPacket()}
|
|
*/
|
|
@NotNull
|
|
public Consumer<BinaryWriter> getMetadataConsumer() {
|
|
return packet -> {
|
|
fillMetadataIndex(packet, 0);
|
|
fillMetadataIndex(packet, 1);
|
|
fillMetadataIndex(packet, 2);
|
|
fillMetadataIndex(packet, 3);
|
|
fillMetadataIndex(packet, 4);
|
|
fillMetadataIndex(packet, 5);
|
|
fillMetadataIndex(packet, 6);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Sends a {@link EntityMetaDataPacket} containing only the specified index
|
|
* The index is wrote using {@link #fillMetadataIndex(BinaryWriter, int)}.
|
|
*
|
|
* @param index the metadata index
|
|
*/
|
|
protected void sendMetadataIndex(int index) {
|
|
EntityMetaDataPacket metaDataPacket = new EntityMetaDataPacket();
|
|
metaDataPacket.entityId = getEntityId();
|
|
metaDataPacket.consumer = packet -> fillMetadataIndex(packet, index);
|
|
|
|
sendPacketToViewersAndSelf(metaDataPacket);
|
|
}
|
|
|
|
/**
|
|
* Used to fill/write a specific metadata index.
|
|
* The proper use to add a new metadata index is to override this and add your case.
|
|
* Then you can also override {@link #getMetadataConsumer()} and fill your newly added index.
|
|
*
|
|
* @param packet the packet writer
|
|
* @param index the index to fill/write
|
|
*/
|
|
protected void fillMetadataIndex(@NotNull BinaryWriter packet, int index) {
|
|
switch (index) {
|
|
case 0:
|
|
fillStateMetadata(packet);
|
|
break;
|
|
case 1:
|
|
fillAirTickMetaData(packet);
|
|
break;
|
|
case 2:
|
|
fillCustomNameMetaData(packet);
|
|
break;
|
|
case 3:
|
|
fillCustomNameVisibleMetaData(packet);
|
|
break;
|
|
case 4:
|
|
fillSilentMetaData(packet);
|
|
break;
|
|
case 5:
|
|
fillNoGravityMetaData(packet);
|
|
break;
|
|
case 6:
|
|
fillPoseMetaData(packet);
|
|
break;
|
|
}
|
|
}
|
|
|
|
private void fillStateMetadata(@NotNull BinaryWriter packet) {
|
|
packet.writeByte((byte) 0);
|
|
packet.writeByte(METADATA_BYTE);
|
|
byte index0 = 0;
|
|
if (onFire)
|
|
index0 += 1;
|
|
if (crouched)
|
|
index0 += 2;
|
|
if (UNUSED_METADATA)
|
|
index0 += 4;
|
|
if (sprinting)
|
|
index0 += 8;
|
|
if (swimming)
|
|
index0 += 16;
|
|
if (invisible)
|
|
index0 += 32;
|
|
if (glowing)
|
|
index0 += 64;
|
|
if (usingElytra)
|
|
index0 += 128;
|
|
packet.writeByte(index0);
|
|
}
|
|
|
|
private void fillAirTickMetaData(@NotNull BinaryWriter packet) {
|
|
packet.writeByte((byte) 1);
|
|
packet.writeByte(METADATA_VARINT);
|
|
packet.writeVarInt(air);
|
|
}
|
|
|
|
private void fillCustomNameMetaData(@NotNull BinaryWriter packet) {
|
|
boolean hasCustomName = customName != null;
|
|
|
|
packet.writeByte((byte) 2);
|
|
packet.writeByte(METADATA_OPTCHAT);
|
|
packet.writeBoolean(hasCustomName);
|
|
if (hasCustomName) {
|
|
packet.writeSizedString(customName.toString());
|
|
}
|
|
}
|
|
|
|
private void fillCustomNameVisibleMetaData(@NotNull BinaryWriter packet) {
|
|
packet.writeByte((byte) 3);
|
|
packet.writeByte(METADATA_BOOLEAN);
|
|
packet.writeBoolean(customNameVisible);
|
|
}
|
|
|
|
private void fillSilentMetaData(@NotNull BinaryWriter packet) {
|
|
packet.writeByte((byte) 4);
|
|
packet.writeByte(METADATA_BOOLEAN);
|
|
packet.writeBoolean(silent);
|
|
}
|
|
|
|
private void fillNoGravityMetaData(@NotNull BinaryWriter packet) {
|
|
packet.writeByte((byte) 5);
|
|
packet.writeByte(METADATA_BOOLEAN);
|
|
packet.writeBoolean(noGravity);
|
|
}
|
|
|
|
private void fillPoseMetaData(@NotNull BinaryWriter packet) {
|
|
packet.writeByte((byte) 6);
|
|
packet.writeByte(METADATA_POSE);
|
|
packet.writeVarInt(pose.ordinal());
|
|
}
|
|
|
|
protected void sendSynchronization() {
|
|
EntityTeleportPacket entityTeleportPacket = new EntityTeleportPacket();
|
|
entityTeleportPacket.entityId = getEntityId();
|
|
entityTeleportPacket.position = getPosition();
|
|
entityTeleportPacket.onGround = isOnGround();
|
|
sendPacketToViewers(entityTeleportPacket);
|
|
}
|
|
|
|
/**
|
|
* Asks for a synchronization (position) to happen during next entity tick.
|
|
*/
|
|
public void askSynchronization() {
|
|
this.lastSynchronizationTime = 0;
|
|
}
|
|
|
|
private boolean shouldUpdate(long time) {
|
|
return (float) (time - lastUpdate) >= MinecraftServer.TICK_MS * 0.9f; // Margin of error
|
|
}
|
|
|
|
private enum Pose {
|
|
STANDING,
|
|
FALL_FLYING,
|
|
SLEEPING,
|
|
SWIMMING,
|
|
SPIN_ATTACK,
|
|
SNEAKING,
|
|
DYING
|
|
}
|
|
|
|
protected boolean shouldRemove() {
|
|
return shouldRemove;
|
|
}
|
|
}
|