SPIGOT-6992: Add LimitedLife/LifeTicks/Bound APIs to Vex

By: Doc <nachito94@msn.com>

paper-server/nms-patches/net/minecraft/world/entity/monster/EntityVex.patch

@@ -1,5 +1,16 @@
 --- a/net/minecraft/world/entity/monster/EntityVex.java
 +++ b/net/minecraft/world/entity/monster/EntityVex.java
+@@ -49,8 +49,8 @@
+     EntityInsentient owner;
+     @Nullable
+     private BlockPosition boundOrigin;
+-    private boolean hasLimitedLife;
+-    private int limitedLifeTicks;
++    public boolean hasLimitedLife; // CraftBukkit - PAIL, private -> public
++    public int limitedLifeTicks; // CraftBukkit - PAIL, private -> public
+ 
+     public EntityVex(EntityTypes<? extends EntityVex> entitytypes, World world) {
+         super(entitytypes, world);
 @@ -368,7 +368,7 @@
  
          @Override

paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftVex.java

@@ -1,6 +1,9 @@
 package org.bukkit.craftbukkit.entity;
 
+import com.google.common.base.Preconditions;
+import net.minecraft.core.BlockPosition;
 import net.minecraft.world.entity.monster.EntityVex;
+import org.bukkit.Location;
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.entity.EntityType;
 import org.bukkit.entity.Vex;
@@ -35,4 +38,38 @@ public class CraftVex extends CraftMonster implements Vex {
     public void setCharging(boolean charging) {
         getHandle().setIsCharging(charging);
     }
+
+    @Override
+    public Location getBound() {
+        BlockPosition blockPosition = getHandle().getBoundOrigin();
+        return (blockPosition == null) ? null : new Location(getWorld(), blockPosition.getX(), blockPosition.getY(), blockPosition.getZ());
+    }
+
+    @Override
+    public void setBound(Location location) {
+        if (location == null) {
+            getHandle().setBoundOrigin(null);
+        } else {
+            Preconditions.checkArgument(getWorld().equals(location.getWorld()), "The bound world cannot be different to the entity's world.");
+            getHandle().setBoundOrigin(new BlockPosition(location.getBlockX(), location.getBlockY(), location.getBlockZ()));
+        }
+    }
+
+    @Override
+    public int getLifeTicks() {
+        return getHandle().limitedLifeTicks;
+    }
+
+    @Override
+    public void setLifeTicks(int lifeTicks) {
+        getHandle().setLimitedLife(lifeTicks);
+        if (lifeTicks < 0) {
+            getHandle().hasLimitedLife = false;
+        }
+    }
+
+    @Override
+    public boolean hasLimitedLife() {
+        return getHandle().hasLimitedLife;
+    }
 }