Improve NavigationListener patches.

reduces diff and cleans up implementation of goals greatly.

Spigot-Server-Patches/0040-Disable-explosion-knockback.patch

@@ -1,11 +1,11 @@
-From 919039afb553383de586fa3c5eecd56dab683712 Mon Sep 17 00:00:00 2001
+From 30ba4b11e81ab0057e2762deabc9f74957c60159 Mon Sep 17 00:00:00 2001
 From: Sudzzy <originmc@outlook.com>
 Date: Wed, 2 Mar 2016 14:48:03 -0600
 Subject: [PATCH] Disable explosion knockback
 
 
 diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
-index 8d6e0a2..6b5067a 100644
+index 1c8e310..694b448 100644
 --- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 +++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 @@ -213,4 +213,9 @@ public class PaperWorldConfig {
@@ -19,10 +19,10 @@ index 8d6e0a2..6b5067a 100644
 +    }
  }
 diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
-index 0248a9e..2e671fd 100644
+index 0a75123..aef9cb7 100644
 --- a/src/main/java/net/minecraft/server/EntityLiving.java
 +++ b/src/main/java/net/minecraft/server/EntityLiving.java
-@@ -852,12 +852,14 @@ public abstract class EntityLiving extends Entity {
+@@ -851,12 +851,14 @@ public abstract class EntityLiving extends Entity {
                      }
                  }
  
@@ -37,7 +37,7 @@ index 0248a9e..2e671fd 100644
                          this.world.broadcastEntityEffect(this, (byte) 2);
                      }
  
-@@ -881,6 +883,8 @@ public abstract class EntityLiving extends Entity {
+@@ -880,6 +882,8 @@ public abstract class EntityLiving extends Entity {
                      }
                  }
  

Spigot-Server-Patches/0057-Timings-v2.patch

@@ -1,4 +1,4 @@
-From 109e5cd2ebdbd397a04cc135c465e1e655adea0a Mon Sep 17 00:00:00 2001
+From ec613026d5eee3c631569a806a4342cca6153443 Mon Sep 17 00:00:00 2001
 From: Aikar <aikar@aikar.co>
 Date: Thu, 3 Mar 2016 04:00:11 -0600
 Subject: [PATCH] Timings v2
@@ -290,7 +290,7 @@ index dd3abb8..a0186ef 100644
  import org.bukkit.craftbukkit.util.Waitable;
  import org.bukkit.event.server.RemoteServerCommandEvent;
 diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
-index a6c1136..c2771e7 100644
+index 768b6e7..2406968 100644
 --- a/src/main/java/net/minecraft/server/Entity.java
 +++ b/src/main/java/net/minecraft/server/Entity.java
 @@ -24,7 +24,8 @@ import org.bukkit.block.BlockFace;
@@ -329,7 +329,7 @@ index a6c1136..c2771e7 100644
  
      public void recalcPosition() {
 diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
-index 2e671fd..b10475f 100644
+index aef9cb7..847dafd 100644
 --- a/src/main/java/net/minecraft/server/EntityLiving.java
 +++ b/src/main/java/net/minecraft/server/EntityLiving.java
 @@ -23,7 +23,7 @@ import org.bukkit.event.entity.EntityRegainHealthEvent;
@@ -341,7 +341,7 @@ index 2e671fd..b10475f 100644
  
  public abstract class EntityLiving extends Entity {
  
-@@ -1686,7 +1686,6 @@ public abstract class EntityLiving extends Entity {
+@@ -1685,7 +1685,6 @@ public abstract class EntityLiving extends Entity {
      }
  
      public void m() {
@@ -349,7 +349,7 @@ index 2e671fd..b10475f 100644
          super.m();
          this.cu();
          if (!this.world.isClientSide) {
-@@ -1759,9 +1758,7 @@ public abstract class EntityLiving extends Entity {
+@@ -1758,9 +1757,7 @@ public abstract class EntityLiving extends Entity {
              }
          }
  
@@ -359,7 +359,7 @@ index 2e671fd..b10475f 100644
          double d0 = this.locX - this.lastX;
          double d1 = this.locZ - this.lastZ;
          float f = (float) (d0 * d0 + d1 * d1);
-@@ -1830,8 +1827,6 @@ public abstract class EntityLiving extends Entity {
+@@ -1829,8 +1826,6 @@ public abstract class EntityLiving extends Entity {
          } else {
              this.bo = 0;
          }
@@ -368,7 +368,7 @@ index 2e671fd..b10475f 100644
      }
  
      protected float h(float f, float f1) {
-@@ -1896,7 +1891,6 @@ public abstract class EntityLiving extends Entity {
+@@ -1895,7 +1890,6 @@ public abstract class EntityLiving extends Entity {
          }
  
          this.world.methodProfiler.a("ai");
@@ -376,7 +376,7 @@ index 2e671fd..b10475f 100644
          if (this.cf()) {
              this.bc = false;
              this.bd = 0.0F;
-@@ -1907,7 +1901,6 @@ public abstract class EntityLiving extends Entity {
+@@ -1906,7 +1900,6 @@ public abstract class EntityLiving extends Entity {
              this.doTick();
              this.world.methodProfiler.b();
          }
@@ -384,7 +384,7 @@ index 2e671fd..b10475f 100644
  
          this.world.methodProfiler.b();
          this.world.methodProfiler.a("jump");
-@@ -1930,14 +1923,10 @@ public abstract class EntityLiving extends Entity {
+@@ -1929,14 +1922,10 @@ public abstract class EntityLiving extends Entity {
          this.be *= 0.98F;
          this.bf *= 0.9F;
          this.r();

Spigot-Server-Patches/0078-Optimize-Navigation-Listener.patch

@@ -0,0 +1,101 @@
+From 24c626d4c99727d3d22ce44cf7357708fbf4bd5b Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Tue, 8 Mar 2016 19:13:54 -0500
+Subject: [PATCH] Optimize Navigation Listener
+
+Mojang was abusing a WeakHashMap to do clean up. However this has some
+scary object life concerns as you could have a NavigationListener being
+ticked even after the entity it was bound to was removed from world.
+
+Switching this to an Array List gives superior iteration performance
+at a slight cost to removal performance.
+
+Additionally, change listener registration to be done upon world add
+instead of immediate up creation.
+
+This provides benefit of only registering and ticking REAL Navigation
+objects, and not invalid entities (cancelled entity spawns for example)
+
+Gives us a much leaner NavigationListener list.
+
+diff --git a/src/main/java/net/minecraft/server/NavigationAbstract.java b/src/main/java/net/minecraft/server/NavigationAbstract.java
+index 7d794b9..aa18f54 100644
+--- a/src/main/java/net/minecraft/server/NavigationAbstract.java
++++ b/src/main/java/net/minecraft/server/NavigationAbstract.java
+@@ -32,7 +32,7 @@ public abstract class NavigationAbstract {
+         this.b = world;
+         this.g = entityinsentient.getAttributeInstance(GenericAttributes.FOLLOW_RANGE);
+         this.s = this.a();
+-        this.b.C().a(this);
++        //this.b.C().a(this); // Paper - Optimized Nav Listener - registered on world add
+     }
+ 
+     protected abstract Pathfinder a();
+diff --git a/src/main/java/net/minecraft/server/NavigationListener.java b/src/main/java/net/minecraft/server/NavigationListener.java
+index f82ea80..aade479 100644
+--- a/src/main/java/net/minecraft/server/NavigationListener.java
++++ b/src/main/java/net/minecraft/server/NavigationListener.java
+@@ -1,26 +1,32 @@
+ package net.minecraft.server;
+ 
++import java.util.ArrayList; // Paper
++import java.util.List; // Paper
+ import java.util.WeakHashMap;
+ 
+ public class NavigationListener implements IWorldAccess {
+ 
+     private static final Object a = new Object();
+-    private final WeakHashMap<NavigationAbstract, Object> b = new WeakHashMap();
++    private final List<NavigationAbstract> navigators = new ArrayList<>(); // Paper
+ 
+     public NavigationListener() {}
+ 
+     public void a(NavigationAbstract navigationabstract) {
+-        this.b.put(navigationabstract, NavigationListener.a);
++        //this.b.put(navigationabstract, NavigationListener.a); // Paper
++        System.err.println("Unexpected NavigationListener add"); // Paper
+     }
+ 
+     public void a(World world, BlockPosition blockposition, IBlockData iblockdata, IBlockData iblockdata1, int i) {
+         if (this.a(world, blockposition, iblockdata, iblockdata1)) {
++            /* // Paper start
+             NavigationAbstract[] anavigationabstract = (NavigationAbstract[]) this.b.keySet().toArray(new NavigationAbstract[0]);
+             NavigationAbstract[] anavigationabstract1 = anavigationabstract;
+             int j = anavigationabstract.length;
+ 
+-            for (int k = 0; k < j; ++k) {
+-                NavigationAbstract navigationabstract = anavigationabstract1[k];
++            */
++            for (int k = 0; k < this.navigators.size(); ++k) {
++                NavigationAbstract navigationabstract = this.navigators.get(k);
++                // Paper end
+ 
+                 if (navigationabstract != null && !navigationabstract.i()) {
+                     PathEntity pathentity = navigationabstract.k();
+@@ -55,9 +61,21 @@ public class NavigationListener implements IWorldAccess {
+ 
+     public void a(int i, boolean flag, double d0, double d1, double d2, double d3, double d4, double d5, int... aint) {}
+ 
+-    public void a(Entity entity) {}
++    public void a(Entity entity) {
++        // Paper start
++        if (entity instanceof EntityInsentient) {
++            this.navigators.add(((EntityInsentient) entity).navigation);
++        }
++        // Paper end
++    }
+ 
+-    public void b(Entity entity) {}
++    public void b(Entity entity) {
++        // Paper start
++        if (entity instanceof EntityInsentient) {
++            this.navigators.remove(((EntityInsentient) entity).navigation);
++        }
++        // Paper end
++    }
+ 
+     public void a(SoundEffect soundeffect, BlockPosition blockposition) {}
+ 
+-- 
+2.7.2
+

Spigot-Server-Patches/0078-Optimize-NavigationListener.patch

@@ -1,48 +0,0 @@
-From 18aa79ba6e1de6ef27606f71a06aa35768470161 Mon Sep 17 00:00:00 2001
-From: Aikar <aikar@aikar.co>
-Date: Mon, 7 Mar 2016 20:41:27 -0500
-Subject: [PATCH] Optimize NavigationListener
-
-I believe Mojang intended to call the NavigationListener Block Update
-method anytime a block is changed, but accidently added it for every
-block physics event instead.
-
-This code is massively ineffecient, and physics is so super hot, it
-destroys server performance.
-
-This patch moves the block update call to setTypeAndData instead of
-on Physics.
-
-diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
-index 1db5334..cae2873 100644
---- a/src/main/java/net/minecraft/server/World.java
-+++ b/src/main/java/net/minecraft/server/World.java
-@@ -89,7 +89,7 @@ public abstract class World implements IBlockAccess {
-     private int K;
-     public final Random random = new Random();
-     public WorldProvider worldProvider;
--    protected NavigationListener t = new NavigationListener();
-+    protected NavigationListener t = new NavigationListener(); public NavigationListener getNavListener() { return this.t; } // Paper
-     protected List<IWorldAccess> u;
-     protected IChunkProvider chunkProvider;
-     protected final IDataManager dataManager;
-@@ -168,7 +168,7 @@ public abstract class World implements IBlockAccess {
-         this.ticksPerAnimalSpawns = this.getServer().getTicksPerAnimalSpawns(); // CraftBukkit
-         this.ticksPerMonsterSpawns = this.getServer().getTicksPerMonsterSpawns(); // CraftBukkit
-         // CraftBukkit end
--        this.u = Lists.newArrayList(new IWorldAccess[] { this.t});
-+        this.u = Lists.newArrayList(new IWorldAccess[] {}); // Paper
-         this.L = Calendar.getInstance();
-         this.scoreboard = new Scoreboard();
-         this.allowMonsters = true;
-@@ -412,6 +412,7 @@ public abstract class World implements IBlockAccess {
-                 if (!this.captureBlockStates) { // Don't notify clients or update physics while capturing blockstates
-                     // Modularize client and physic updates
-                     notifyAndUpdatePhysics(blockposition, chunk, iblockdata1, iblockdata, i);
-+                    this.getNavListener().a(this, blockposition, iblockdata1, iblockdata, i); // Paper
-                 }
-                 // CraftBukkit end
- 
--- 
-2.7.2
-

Spigot-Server-Patches/0079-Optimize-NavigationListener-Iteration.patch

@@ -1,100 +0,0 @@
-From 9c96f51c8068de370baeb9fa4aee91c82d273e42 Mon Sep 17 00:00:00 2001
-From: Aikar <aikar@aikar.co>
-Date: Mon, 7 Mar 2016 22:43:26 -0500
-Subject: [PATCH] Optimize NavigationListener Iteration
-
-I don't know what the person who wrote that code was smoking, but I
-don't think it was good.
-
-Gets rid of the WeakHashMap that mojang was abusing purely to be lazy
-on clean up, and handles registering and deregistering navigation
-upon world add/remove operations.
-
-diff --git a/src/main/java/net/minecraft/server/NavigationAbstract.java b/src/main/java/net/minecraft/server/NavigationAbstract.java
-index 7d794b9..ca4cb26 100644
---- a/src/main/java/net/minecraft/server/NavigationAbstract.java
-+++ b/src/main/java/net/minecraft/server/NavigationAbstract.java
-@@ -32,7 +32,7 @@ public abstract class NavigationAbstract {
-         this.b = world;
-         this.g = entityinsentient.getAttributeInstance(GenericAttributes.FOLLOW_RANGE);
-         this.s = this.a();
--        this.b.C().a(this);
-+        //this.b.C().a(this); // Paper
-     }
- 
-     protected abstract Pathfinder a();
-diff --git a/src/main/java/net/minecraft/server/NavigationListener.java b/src/main/java/net/minecraft/server/NavigationListener.java
-index f82ea80..ef446fc 100644
---- a/src/main/java/net/minecraft/server/NavigationListener.java
-+++ b/src/main/java/net/minecraft/server/NavigationListener.java
-@@ -1,26 +1,41 @@
- package net.minecraft.server;
- 
-+import java.util.ArrayList; // Paper
-+import java.util.List; // Paper
- import java.util.WeakHashMap;
- 
- public class NavigationListener implements IWorldAccess {
- 
-     private static final Object a = new Object();
--    private final WeakHashMap<NavigationAbstract, Object> b = new WeakHashMap();
-+    private final List<NavigationAbstract> navigators = new ArrayList<>(); // Paper
- 
-     public NavigationListener() {}
- 
-+
-     public void a(NavigationAbstract navigationabstract) {
--        this.b.put(navigationabstract, NavigationListener.a);
-+        this.add(navigationabstract); // Paper
-     }
- 
-+    // Paper start
-+    public void add(NavigationAbstract navigationabstract) {
-+        this.navigators.add(navigationabstract);
-+    }
-+    public void remove(NavigationAbstract navigationabstract) {
-+        this.navigators.remove(navigationabstract);
-+    }
-+    // Paper end
-+
-     public void a(World world, BlockPosition blockposition, IBlockData iblockdata, IBlockData iblockdata1, int i) {
-         if (this.a(world, blockposition, iblockdata, iblockdata1)) {
--            NavigationAbstract[] anavigationabstract = (NavigationAbstract[]) this.b.keySet().toArray(new NavigationAbstract[0]);
--            NavigationAbstract[] anavigationabstract1 = anavigationabstract;
--            int j = anavigationabstract.length;
-+            // Paper start
-+            //NavigationAbstract[] anavigationabstract = (NavigationAbstract[]) this.navigators.keySet().toArray(new NavigationAbstract[0]);
-+            //NavigationAbstract[] anavigationabstract1 = anavigationabstract;
-+            int j = this.navigators.size();
-+
- 
-             for (int k = 0; k < j; ++k) {
--                NavigationAbstract navigationabstract = anavigationabstract1[k];
-+                NavigationAbstract navigationabstract = this.navigators.get(k);
-+                // Paper end
- 
-                 if (navigationabstract != null && !navigationabstract.i()) {
-                     PathEntity pathentity = navigationabstract.k();
-diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
-index cae2873..5ae2f14 100644
---- a/src/main/java/net/minecraft/server/World.java
-+++ b/src/main/java/net/minecraft/server/World.java
-@@ -1024,6 +1024,7 @@ public abstract class World implements IBlockAccess {
-             this.getChunkAt(i, j).a(entity);
-             this.entityList.add(entity);
-             this.b(entity);
-+            if (entity instanceof EntityInsentient) { this.getNavListener().add(((EntityInsentient) entity).navigation); } // Paper
-             return true;
-         }
-     }
-@@ -1105,6 +1106,7 @@ public abstract class World implements IBlockAccess {
-         }
-         // CraftBukkit end
-         } // Spigot
-+        if (entity instanceof EntityInsentient) { this.getNavListener().remove(((EntityInsentient) entity).navigation); } // Paper
-         this.c(entity);
-     }
- 
--- 
-2.7.2
-