chore: fix checkstyle issues

src/main/java/org/terasology/spawning/SpawnableComponent.java

@@ -10,8 +10,6 @@
 
 /**
  * Component that enables an entity to be spawned by something.
- *
- * @author Rasmus 'Cervator' Praestholm <cervator@gmail.com>
  */
 public class SpawnableComponent implements Component<SpawnableComponent> {
 

src/main/java/org/terasology/spawning/SpawnerComponent.java

@@ -12,8 +12,6 @@
  * Component that enables an entity to be a spawner of something.
  * It forces any block it attaches to "active" so it'll maintain a BlockComponent for location purposes.
  * However other entities can be valid spawners as well, such as creatures that have a LocationComponent.
- *
- * @author Rasmus 'Cervator' Praestholm <cervator@gmail.com>
  */
 @ForceBlockActive
 public class SpawnerComponent implements Component<SpawnerComponent> {

src/main/java/org/terasology/spawning/SpawnerSystem.java

@@ -1,18 +1,5 @@
-/*
- * Copyright 2015 MovingBlocks
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
+// Copyright 2021 The Terasology Foundation
+// SPDX-License-Identifier: Apache-2.0
 package org.terasology.spawning;
 
 import com.google.common.collect.HashMultimap;
@@ -48,8 +35,6 @@
 
 /**
  * System that handles spawning of stuff
- *
- * @author Rasmus 'Cervator' Praestholm <cervator@gmail.com>
  */
 @RegisterSystem(RegisterMode.AUTHORITY)
 public class SpawnerSystem extends BaseComponentSystem implements UpdateSubscriberSystem {
@@ -154,7 +139,7 @@ public void onRemovedSpawner(BeforeRemoveComponent event, EntityRef spawner) {
      * @param event the PeriodicActionTriggeredEvent from the scheduler to react to.
      * @param spawner the spawner entity about to be processed.
      */
-    @ReceiveEvent(components = {SpawnerComponent.class})
+    @ReceiveEvent(components = SpawnerComponent.class)
     public void onSpawn(PeriodicActionTriggeredEvent event, EntityRef spawner) {
         logger.info("Spawner {} is ticking", spawner);
     }
@@ -230,7 +215,9 @@ public void update(float delta) {
                 if (spawnerComp.rangedSpawning) {
 
                     // Add random range on the x and z planes, leave y (height) unchanged for now
-                    spawnPos = new Vector3f(originPos.x + random.nextFloat() * spawnerComp.range, originPos.y, originPos.z + random.nextFloat() * spawnerComp.range);
+                    spawnPos = new Vector3f(originPos.x + random.nextFloat() * spawnerComp.range, 
+                                            originPos.y, 
+                                            originPos.z + random.nextFloat() * spawnerComp.range);
 
                     // If a minimum distance is set make sure we're beyond it
                     if (spawnerComp.minDistance != 0) {
@@ -277,7 +264,8 @@ public void update(float delta) {
                 int anotherRandomIndex = random.nextInt(randomType.size());
                 Object[] randomPrefabs = randomType.toArray();
                 Prefab chosenPrefab = (Prefab) randomPrefabs[anotherRandomIndex];
-                logger.info("Picked index {} of types {} which is a {}, to spawn at {}", anotherRandomIndex, chosenSpawnerType, chosenPrefab, spawnPos);
+                logger.info("Picked index {} of types {} which is a {}, to spawn at {}", 
+                            anotherRandomIndex, chosenSpawnerType, chosenPrefab, spawnPos);
 
                 // Finally create the Spawnable. Assign parentage so we can tie Spawnables to their Spawner if needed
                 EntityRef newSpawnableRef = entityManager.create(chosenPrefab, spawnPos);