Add API to change EnderEye target without other nonsense (#6460)

patches/api/0330-Change-EnderEye-target-without-changing-other-things.patch

@@ -0,0 +1,28 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Sat, 21 Aug 2021 12:14:00 -0700
+Subject: [PATCH] Change EnderEye target without changing other things
+
+
+diff --git a/src/main/java/org/bukkit/entity/EnderSignal.java b/src/main/java/org/bukkit/entity/EnderSignal.java
+index 1bba155d80621852acd187e181423afc577899ea..c8c74651e1b434e5a0fce6d9e8d01754b2d7287a 100644
+--- a/src/main/java/org/bukkit/entity/EnderSignal.java
++++ b/src/main/java/org/bukkit/entity/EnderSignal.java
+@@ -28,6 +28,17 @@ public interface EnderSignal extends Entity {
+      */
+     public void setTargetLocation(@NotNull Location location);
+ 
++    // Paper start
++    /**
++     * Set the {@link Location} this EnderSignal is moving towards.
++     *
++     * @param location the new target location
++     * @param update true to reset the {@link #getDropItem()}
++     *               to a random value and {@link #getDespawnTimer()} to 0
++     */
++    public void setTargetLocation(@NotNull Location location, boolean update);
++    // Paper end
++
+     /**
+      * Gets if the EnderSignal should drop an item on death.<br>
+      * If {@code true}, it will drop an item. If {@code false}, it will shatter.

patches/server/0751-Change-EnderEye-target-without-changing-other-things.patch

@@ -0,0 +1,54 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Sat, 21 Aug 2021 12:13:53 -0700
+Subject: [PATCH] Change EnderEye target without changing other things
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/projectile/EyeOfEnder.java b/src/main/java/net/minecraft/world/entity/projectile/EyeOfEnder.java
+index 253c5d29452f4f75b9a94a74177c7adaa4a61978..27c81c21b76a6916abe5b334bc05b6edb47d151e 100644
+--- a/src/main/java/net/minecraft/world/entity/projectile/EyeOfEnder.java
++++ b/src/main/java/net/minecraft/world/entity/projectile/EyeOfEnder.java
+@@ -75,6 +75,11 @@ public class EyeOfEnder extends Entity implements ItemSupplier {
+     }
+ 
+     public void signalTo(BlockPos pos) {
++        // Paper start
++        this.signalTo(pos, true);
++    }
++    public void signalTo(BlockPos pos, boolean update) {
++        // Paper end
+         double d0 = (double) pos.getX();
+         int i = pos.getY();
+         double d1 = (double) pos.getZ();
+@@ -92,8 +97,10 @@ public class EyeOfEnder extends Entity implements ItemSupplier {
+             this.tz = d1;
+         }
+ 
++        if (update) { // Paper
+         this.life = 0;
+         this.surviveAfterDeath = this.random.nextInt(5) > 0;
++        } // Paper
+     }
+ 
+     @Override
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEnderSignal.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEnderSignal.java
+index 705dcae8f881cbdf5ff468f945b9269f9eae0e58..13c1188639e00cd96e00b179c4e353582bf66e64 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEnderSignal.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEnderSignal.java
+@@ -38,8 +38,15 @@ public class CraftEnderSignal extends CraftEntity implements EnderSignal {
+ 
+     @Override
+     public void setTargetLocation(Location location) {
++        // Paper start
++        this.setTargetLocation(location, true);
++    }
++
++    @Override
++    public void setTargetLocation(Location location, boolean update) {
++        // Paper end
+         Preconditions.checkArgument(getWorld().equals(location.getWorld()), "Cannot target EnderSignal across worlds");
+-        this.getHandle().signalTo(new BlockPos(location.getX(), location.getY(), location.getZ()));
++        this.getHandle().signalTo(new BlockPos(location.getX(), location.getY(), location.getZ()), update); // Paper
+     }
+ 
+     @Override