SPIGOT-80: Fix players being invisible after teleporting

nms-patches/EntityTrackerEntry.patch

@@ -1,5 +1,5 @@
---- ../work/decompile-8eb82bde//net/minecraft/server/EntityTrackerEntry.java	2014-11-28 17:43:43.173707433 +0000
+--- ../work/decompile-8eb82bde//net/minecraft/server/EntityTrackerEntry.java	2014-12-06 20:17:40.567361225 +0000
-+++ src/main/java/net/minecraft/server/EntityTrackerEntry.java	2014-11-28 17:38:21.000000000 +0000
++++ src/main/java/net/minecraft/server/EntityTrackerEntry.java	2014-12-06 20:17:33.983361371 +0000
 @@ -8,6 +8,11 @@
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
@@ -162,7 +162,20 @@
  
                      if (this.tracker instanceof EntityLiving) {
                          EntityLiving entityliving = (EntityLiving) this.tracker;
-@@ -356,7 +427,10 @@
+@@ -337,8 +408,10 @@
+     }
+ 
+     public boolean c(EntityPlayer entityplayer) {
+-        double d0 = entityplayer.locX - (double) (this.xLoc / 32);
+-        double d1 = entityplayer.locZ - (double) (this.zLoc / 32);
++        // CraftBukkit start - this.*Loc / 30 -> this.tracker.loc*
++        double d0 = entityplayer.locX - this.tracker.locX;
++        double d1 = entityplayer.locZ - this.tracker.locZ;
++        // CraftBukkit end
+ 
+         return d0 >= (double) (-this.b) && d0 <= (double) this.b && d1 >= (double) (-this.b) && d1 <= (double) this.b && this.tracker.a(entityplayer);
+     }
+@@ -356,7 +429,10 @@
  
      private Packet c() {
          if (this.tracker.dead) {