package net.minecraft.server; import java.util.HashSet; import java.util.Iterator; import java.util.List; import java.util.Set; public class EntityTrackerEntry { public Entity tracker; public int b; public int c; public int d; public int e; public int f; public int g; public int h; public double i; public double j; public double k; public int l = 0; private double o; private double p; private double q; private boolean r = false; private boolean isMoving; private int t = 0; public boolean m = false; public Set trackedPlayers = new HashSet(); public EntityTrackerEntry(Entity entity, int i, int j, boolean flag) { this.tracker = entity; this.b = i; this.c = j; this.isMoving = flag; this.d = MathHelper.floor(entity.locX * 32.0D); this.e = MathHelper.floor(entity.locY * 32.0D); this.f = MathHelper.floor(entity.locZ * 32.0D); this.g = MathHelper.d(entity.yaw * 256.0F / 360.0F); this.h = MathHelper.d(entity.pitch * 256.0F / 360.0F); } public boolean equals(Object object) { return object instanceof EntityTrackerEntry ? ((EntityTrackerEntry) object).tracker.id == this.tracker.id : false; } public int hashCode() { return this.tracker.id; } public void track(List list) { this.m = false; if (!this.r || this.tracker.e(this.o, this.p, this.q) > 16.0D) { this.o = this.tracker.locX; this.p = this.tracker.locY; this.q = this.tracker.locZ; this.r = true; this.m = true; this.scanPlayers(list); } ++this.t; if (++this.l % this.c == 0) { int i = MathHelper.floor(this.tracker.locX * 32.0D); int j = MathHelper.floor(this.tracker.locY * 32.0D); int k = MathHelper.floor(this.tracker.locZ * 32.0D); int l = MathHelper.d(this.tracker.yaw * 256.0F / 360.0F); int i1 = MathHelper.d(this.tracker.pitch * 256.0F / 360.0F); int j1 = i - this.d; int k1 = j - this.e; int l1 = k - this.f; Object object = null; boolean flag = Math.abs(i) >= 8 || Math.abs(j) >= 8 || Math.abs(k) >= 8; boolean flag1 = Math.abs(l - this.g) >= 8 || Math.abs(i1 - this.h) >= 8; if (j1 >= -128 && j1 < 128 && k1 >= -128 && k1 < 128 && l1 >= -128 && l1 < 128 && this.t <= 400) { if (flag && flag1) { object = new Packet33RelEntityMoveLook(this.tracker.id, (byte) j1, (byte) k1, (byte) l1, (byte) l, (byte) i1); } else if (flag) { object = new Packet31RelEntityMove(this.tracker.id, (byte) j1, (byte) k1, (byte) l1); } else if (flag1) { object = new Packet32EntityLook(this.tracker.id, (byte) l, (byte) i1); } } else { this.t = 0; this.tracker.locX = (double) i / 32.0D; this.tracker.locY = (double) j / 32.0D; this.tracker.locZ = (double) k / 32.0D; object = new Packet34EntityTeleport(this.tracker.id, i, j, k, (byte) l, (byte) i1); } if (this.isMoving) { double d0 = this.tracker.motX - this.i; double d1 = this.tracker.motY - this.j; double d2 = this.tracker.motZ - this.k; double d3 = 0.02D; double d4 = d0 * d0 + d1 * d1 + d2 * d2; if (d4 > d3 * d3 || d4 > 0.0D && this.tracker.motX == 0.0D && this.tracker.motY == 0.0D && this.tracker.motZ == 0.0D) { this.i = this.tracker.motX; this.j = this.tracker.motY; this.k = this.tracker.motZ; this.a((Packet) (new Packet28EntityVelocity(this.tracker.id, this.i, this.j, this.k))); } } if (object != null) { this.a((Packet) object); } DataWatcher datawatcher = this.tracker.aa(); if (datawatcher.a()) { this.b((Packet) (new Packet40EntityMetadata(this.tracker.id, datawatcher))); } if (flag) { this.d = i; this.e = j; this.f = k; } if (flag1) { this.g = l; this.h = i1; } } if (this.tracker.velocityChanged) { // CraftBukkit start - create PlayerVelocity event boolean cancelled = false; if(this.tracker instanceof EntityPlayer) { org.bukkit.entity.Player player = (org.bukkit.entity.Player) this.tracker.getBukkitEntity(); org.bukkit.util.Vector velocity = player.getVelocity(); org.bukkit.event.player.PlayerVelocityEvent event = new org.bukkit.event.player.PlayerVelocityEvent(player, velocity); this.tracker.world.getServer().getPluginManager().callEvent(event); if(event.isCancelled()) { cancelled = true; } else if(!velocity.equals(event.getVelocity())) { player.setVelocity(velocity); } } if(!cancelled) { this.b((Packet) (new Packet28EntityVelocity(this.tracker))); } // CraftBukkit end this.tracker.velocityChanged = false; } } public void a(Packet packet) { Iterator iterator = this.trackedPlayers.iterator(); while (iterator.hasNext()) { EntityPlayer entityplayer = (EntityPlayer) iterator.next(); entityplayer.netServerHandler.sendPacket(packet); } } public void b(Packet packet) { this.a(packet); if (this.tracker instanceof EntityPlayer) { ((EntityPlayer) this.tracker).netServerHandler.sendPacket(packet); } } public void a() { this.a((Packet) (new Packet29DestroyEntity(this.tracker.id))); } public void a(EntityPlayer entityplayer) { if (this.trackedPlayers.contains(entityplayer)) { this.trackedPlayers.remove(entityplayer); } } public void b(EntityPlayer entityplayer) { if (entityplayer != this.tracker) { double d0 = entityplayer.locX - (double) (this.d / 32); double d1 = entityplayer.locZ - (double) (this.f / 32); if (d0 >= (double) (-this.b) && d0 <= (double) this.b && d1 >= (double) (-this.b) && d1 <= (double) this.b) { if (!this.trackedPlayers.contains(entityplayer)) { this.trackedPlayers.add(entityplayer); entityplayer.netServerHandler.sendPacket(this.b()); if (this.isMoving) { entityplayer.netServerHandler.sendPacket(new Packet28EntityVelocity(this.tracker.id, this.tracker.motX, this.tracker.motY, this.tracker.motZ)); } ItemStack[] aitemstack = this.tracker.getEquipment(); if (aitemstack != null) { for (int i = 0; i < aitemstack.length; ++i) { entityplayer.netServerHandler.sendPacket(new Packet5EntityEquipment(this.tracker.id, i, aitemstack[i])); } } if (this.tracker instanceof EntityHuman) { EntityHuman entityhuman = (EntityHuman) this.tracker; if (entityhuman.isSleeping()) { entityplayer.netServerHandler.sendPacket(new Packet17(this.tracker, 0, MathHelper.floor(this.tracker.locX), MathHelper.floor(this.tracker.locY), MathHelper.floor(this.tracker.locZ))); } } } } else if (this.trackedPlayers.contains(entityplayer)) { this.trackedPlayers.remove(entityplayer); entityplayer.netServerHandler.sendPacket(new Packet29DestroyEntity(this.tracker.id)); } } } public void scanPlayers(List list) { for (int i = 0; i < list.size(); ++i) { this.b((EntityPlayer) list.get(i)); } } private Packet b() { if (this.tracker instanceof EntityItem) { EntityItem entityitem = (EntityItem) this.tracker; Packet21PickupSpawn packet21pickupspawn = new Packet21PickupSpawn(entityitem); entityitem.locX = (double) packet21pickupspawn.b / 32.0D; entityitem.locY = (double) packet21pickupspawn.c / 32.0D; entityitem.locZ = (double) packet21pickupspawn.d / 32.0D; return packet21pickupspawn; } else if (this.tracker instanceof EntityPlayer) { // CraftBukkit start - limit name length to 16 characters if (((EntityHuman) this.tracker).name.length() > 16) { ((EntityHuman) this.tracker).name = ((EntityHuman) this.tracker).name.substring(0, 16); } // CraftBukkit end return new Packet20NamedEntitySpawn((EntityHuman) this.tracker); } else { if (this.tracker instanceof EntityMinecart) { EntityMinecart entityminecart = (EntityMinecart) this.tracker; if (entityminecart.type == 0) { return new Packet23VehicleSpawn(this.tracker, 10); } if (entityminecart.type == 1) { return new Packet23VehicleSpawn(this.tracker, 11); } if (entityminecart.type == 2) { return new Packet23VehicleSpawn(this.tracker, 12); } } if (this.tracker instanceof EntityBoat) { return new Packet23VehicleSpawn(this.tracker, 1); } else if (this.tracker instanceof IAnimal) { return new Packet24MobSpawn((EntityLiving) this.tracker); } else if (this.tracker instanceof EntityFish) { return new Packet23VehicleSpawn(this.tracker, 90); } else if (this.tracker instanceof EntityArrow) { EntityLiving entityliving = ((EntityArrow) this.tracker).shooter; return new Packet23VehicleSpawn(this.tracker, 60, entityliving != null ? entityliving.id : this.tracker.id); } else if (this.tracker instanceof EntitySnowball) { return new Packet23VehicleSpawn(this.tracker, 61); } else if (this.tracker instanceof EntityFireball) { EntityFireball entityfireball = (EntityFireball) this.tracker; // CraftBukkit start - added check for null shooter int shooter = ((EntityFireball) this.tracker).shooter != null ? ((EntityFireball) this.tracker).shooter.id : 1; Packet23VehicleSpawn packet23vehiclespawn = new Packet23VehicleSpawn(this.tracker, 63, shooter); // CraftBukkit end packet23vehiclespawn.e = (int) (entityfireball.c * 8000.0D); packet23vehiclespawn.f = (int) (entityfireball.d * 8000.0D); packet23vehiclespawn.g = (int) (entityfireball.e * 8000.0D); return packet23vehiclespawn; } else if (this.tracker instanceof EntityEgg) { return new Packet23VehicleSpawn(this.tracker, 62); } else if (this.tracker instanceof EntityTNTPrimed) { return new Packet23VehicleSpawn(this.tracker, 50); } else { if (this.tracker instanceof EntityFallingSand) { EntityFallingSand entityfallingsand = (EntityFallingSand) this.tracker; if (entityfallingsand.a == Block.SAND.id) { return new Packet23VehicleSpawn(this.tracker, 70); } if (entityfallingsand.a == Block.GRAVEL.id) { return new Packet23VehicleSpawn(this.tracker, 71); } } if (this.tracker instanceof EntityPainting) { return new Packet25EntityPainting((EntityPainting) this.tracker); } else { throw new IllegalArgumentException("Don\'t know how to add " + this.tracker.getClass() + "!"); } } } } public void c(EntityPlayer entityplayer) { if (this.trackedPlayers.contains(entityplayer)) { this.trackedPlayers.remove(entityplayer); entityplayer.netServerHandler.sendPacket(new Packet29DestroyEntity(this.tracker.id)); } } }