npc center command

api/src/main/java/lol/pyr/znpcsplus/util/NpcLocation.java

@@ -57,6 +57,10 @@ public class NpcLocation {
         return this.pitch;
     }
 
+    public NpcLocation centered() {
+        return new NpcLocation(Math.floor(x) + 0.5, y, Math.floor(z) + 0.5, yaw, pitch);
+    }
+
     public Location toBukkitLocation(World world) {
         return new Location(world, this.x, this.y, this.z, this.yaw, this.pitch);
     }

plugin/src/main/java/lol/pyr/znpcsplus/ZNpcsPlus.java

@@ -293,6 +293,7 @@ public class ZNpcsPlus extends JavaPlugin {
         registerEnumParser(manager, VillagerLevel.class, incorrectUsageMessage);
 
         manager.registerCommand("npc", new MultiCommand(loadHelpMessage("root"))
+                .addSubcommand("center", new CenterCommand(npcRegistry))
                 .addSubcommand("create", new CreateCommand(npcRegistry, typeRegistry))
                 .addSubcommand("reloadconfig", new ReloadConfigCommand(configManager))
                 .addSubcommand("toggle", new ToggleCommand(npcRegistry))

plugin/src/main/java/lol/pyr/znpcsplus/commands/CenterCommand.java

@@ -0,0 +1,35 @@
+package lol.pyr.znpcsplus.commands;
+
+import lol.pyr.director.adventure.command.CommandContext;
+import lol.pyr.director.adventure.command.CommandHandler;
+import lol.pyr.director.common.command.CommandExecutionException;
+import lol.pyr.znpcsplus.npc.NpcEntryImpl;
+import lol.pyr.znpcsplus.npc.NpcImpl;
+import lol.pyr.znpcsplus.npc.NpcRegistryImpl;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
+
+import java.util.Collections;
+import java.util.List;
+
+public class CenterCommand implements CommandHandler {
+    private final NpcRegistryImpl npcRegistry;
+
+    public CenterCommand(NpcRegistryImpl npcRegistry) {
+        this.npcRegistry = npcRegistry;
+    }
+
+    @Override
+    public void run(CommandContext context) throws CommandExecutionException {
+        context.setUsage(context.getLabel() + " center <id>");
+        NpcImpl npc = context.parse(NpcEntryImpl.class).getNpc();
+        npc.setLocation(npc.getLocation().centered());
+        context.send(Component.text("NPC has been centered on it's current block.", NamedTextColor.GREEN));
+    }
+
+    @Override
+    public List<String> suggest(CommandContext context) throws CommandExecutionException {
+        if (context.argSize() == 1) return context.suggestCollection(npcRegistry.getModifiableIds());
+        return Collections.emptyList();
+    }
+}

plugin/src/main/resources/help-messages/root.txt

@@ -9,6 +9,7 @@
  <gold>* <yellow>/npc type <id> <type>
 
  <gold>* <yellow>/npc near <distance>
+ <gold>* <yellow>/npc center <id>
  <gold>* <yellow>/npc move <id>
  <gold>* <yellow>/npc teleport <id>