88 lines
4.2 KiB
Diff
88 lines
4.2 KiB
Diff
From fe8bd60fe7b27283c696a5b746414187695174b0 Mon Sep 17 00:00:00 2001
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From: Jedediah Smith <jedediah@silencegreys.com>
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Date: Wed, 2 Mar 2016 23:13:07 -0600
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Subject: [PATCH] Send absolute position the first time an entity is seen
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diff --git a/src/main/java/net/minecraft/server/EntityTrackerEntry.java b/src/main/java/net/minecraft/server/EntityTrackerEntry.java
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index dd6c84b4a2..de0cf6b735 100644
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--- a/src/main/java/net/minecraft/server/EntityTrackerEntry.java
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+++ b/src/main/java/net/minecraft/server/EntityTrackerEntry.java
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@@ -41,7 +41,19 @@ public class EntityTrackerEntry {
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private boolean x;
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private boolean y;
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public boolean b;
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- public final Set<EntityPlayer> trackedPlayers = Sets.newHashSet();
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+ // Paper start
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+ // Replace trackedPlayers Set with a Map. The value is true until the player receives
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+ // their first update (which is forced to have absolute coordinates), false afterward.
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+ public java.util.Map<EntityPlayer, Boolean> trackedPlayerMap = new java.util.HashMap<EntityPlayer, Boolean>();
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+ public Set<EntityPlayer> trackedPlayers = trackedPlayerMap.keySet();
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+
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+ /**
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+ * Requested in https://github.com/PaperMC/Paper/issues/1537 to allow intercepting packets
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+ */
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+ public void sendPlayerPacket(EntityPlayer player, Packet packet) {
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+ player.playerConnection.sendPacket(packet);
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+ }
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+ // Paper end
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public EntityTrackerEntry(Entity entity, int i, int j, int k, boolean flag) {
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this.tracker = entity;
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@@ -142,6 +154,7 @@ public class EntityTrackerEntry {
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boolean flag1 = l1 * l1 + i2 * i2 + j2 * j2 >= 128L || this.a % 60 == 0;
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boolean flag2 = Math.abs(j1 - this.yRot) >= 1 || Math.abs(k1 - this.xRot) >= 1;
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+ if (this.a > 0 || this.tracker instanceof EntityArrow) { // Paper - Moved up
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// CraftBukkit start - Code moved from below
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if (flag1) {
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this.xLoc = k;
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@@ -155,7 +168,6 @@ public class EntityTrackerEntry {
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}
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// CraftBukkit end
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- if (this.a > 0 || this.tracker instanceof EntityArrow) {
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if (l1 >= -32768L && l1 < 32768L && i2 >= -32768L && i2 < 32768L && j2 >= -32768L && j2 < 32768L && this.v <= 400 && !this.x && this.y == this.tracker.onGround) {
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if ((!flag1 || !flag2) && !(this.tracker instanceof EntityArrow)) {
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if (flag1) {
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@@ -201,7 +213,26 @@ public class EntityTrackerEntry {
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}
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if (packet1 != null) {
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- this.broadcast((Packet) packet1);
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+ // Paper start - ensure fresh viewers get an absolute position on their first update,
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+ // since we can't be certain what position they received in the spawn packet.
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+ if (packet1 instanceof PacketPlayOutEntityTeleport) {
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+ this.broadcast((Packet) packet1);
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+ } else {
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+ PacketPlayOutEntityTeleport teleportPacket = null;
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+
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+ for (java.util.Map.Entry<EntityPlayer, Boolean> viewer : trackedPlayerMap.entrySet()) {
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+ if (viewer.getValue()) {
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+ viewer.setValue(false);
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+ if (teleportPacket == null) {
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+ teleportPacket = new PacketPlayOutEntityTeleport(this.tracker);
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+ }
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+ sendPlayerPacket(viewer.getKey(), teleportPacket);
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+ } else {
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+ sendPlayerPacket(viewer.getKey(), (Packet) packet1);
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+ }
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+ }
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+ }
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+ // Paper end
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}
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this.d();
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@@ -338,7 +369,7 @@ public class EntityTrackerEntry {
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entityplayer.removeQueue.remove(Integer.valueOf(this.tracker.getId()));
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// CraftBukkit end
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- this.trackedPlayers.add(entityplayer);
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+ this.trackedPlayerMap.put(entityplayer, true); // Paper
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Packet<?> packet = this.e();
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entityplayer.playerConnection.sendPacket(packet);
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--
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2.21.0
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