SPIGOT-6545: Unable to set Guardian target via API while awareness is disabled

By: DerFrZocker <derrieple@gmail.com>

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

@@ -0,0 +1,11 @@
+--- a/net/minecraft/world/entity/monster/EntityGuardian.java
++++ b/net/minecraft/world/entity/monster/EntityGuardian.java
+@@ -123,7 +123,7 @@
+         return 80;
+     }
+ 
+-    void a(int i) {
++    public void a(int i) { // PAIL package -> public, rename setLaserTarget
+         this.entityData.set(EntityGuardian.DATA_ID_ATTACK_TARGET, i);
+     }
+ 

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

@@ -4,6 +4,7 @@ import net.minecraft.world.entity.monster.EntityGuardian;
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.entity.EntityType;
 import org.bukkit.entity.Guardian;
+import org.bukkit.entity.LivingEntity;
 
 public class CraftGuardian extends CraftMonster implements Guardian {
 
@@ -11,6 +12,11 @@ public class CraftGuardian extends CraftMonster implements Guardian {
         super(server, entity);
     }
 
+    @Override
+    public EntityGuardian getHandle() {
+        return (EntityGuardian) super.getHandle();
+    }
+
     @Override
     public String toString() {
         return "CraftGuardian";
@@ -21,6 +27,37 @@ public class CraftGuardian extends CraftMonster implements Guardian {
         return EntityType.GUARDIAN;
     }
 
+    @Override
+    public void setTarget(LivingEntity target) {
+        super.setTarget(target);
+
+        // clean up laser target, when target is removed
+        if (target == null) {
+            getHandle().a(0); // PAIL rename setLaserTarget
+        }
+    }
+
+    @Override
+    public boolean setLaser(boolean activated) {
+        if (activated) {
+            LivingEntity target = getTarget();
+            if (target == null) {
+                return false;
+            }
+
+            getHandle().a(target.getEntityId()); // PAIL rename setLaserTarget
+        } else {
+            getHandle().a(0); // PAIL rename setLaserTarget
+        }
+
+        return true;
+    }
+
+    @Override
+    public boolean hasLaser() {
+        return getHandle().fy(); // PAIL rename hasLaserTarget
+    }
+
     @Override
     public boolean isElder() {
         return false;