feat(pocket-base): split hostile and passive mob spawning

README.md

@@ -29,7 +29,7 @@ The plugin JAR is written to `build/libs/`.
 /basesettings status
 /basesettings upgrade
 /basesettings pocket upgrade
-/basesettings pocket mobs <enable|disable>
+/basesettings pocket mobs <hostile|passive> <enable|disable>
 /basesettings pocket type <void|nether|overworld> <subtype>
 /basesettings visitors <allowed|blocked>
 /basesettings navigation <enable|disable>
@@ -45,7 +45,7 @@ After 250 Survival-mode block placements anywhere by default, the spawnable over
 
 `/base` has a stationary warm-up. Looking around is allowed, while movement between blocks, damage, teleportation, world changes, death, logout, and conflicting teleport commands cancel it without consuming the cooldown.
 
-Base IV owners can purchase and expand a persistent Pocket Base with `/basesettings pocket upgrade`. Activating a complete diamond-block portal frame inside the normal base with flint and steel opens one public entrance to the owner's grass platform in a private void world. The owner can move the return portal by building and igniting another complete frame inside the unlocked Pocket Base boundary; only the newly activated return portal remains functional. Natural hostile and passive mob spawning is disabled by default and can be controlled by the owner with `/basesettings pocket mobs <enable|disable>`.
+Base IV owners can purchase and expand a persistent Pocket Base with `/basesettings pocket upgrade`. Activating a complete diamond-block portal frame inside the normal base with flint and steel opens one public entrance to the owner's grass platform in a private void world. The owner can move the return portal by building and igniting another complete frame inside the unlocked Pocket Base boundary; only the newly activated return portal remains functional. Natural hostile and passive mob spawning is disabled by default. Owners can control each category independently with `/basesettings pocket mobs <hostile|passive> <enable|disable>`.
 
 Owners can change biome metadata without altering Pocket Base blocks, entities, inventories, or portals by using `/basesettings pocket type <void|nether|overworld> <subtype>`. Void uses `the_void`; Nether and Overworld accept their compatible vanilla biome names, such as `crimson_forest` or `plains`. Each change defaults to 16 netherite blocks, is configurable, and affects applicable natural mob selection when spawning is enabled. The Pocket Base remains a void-generated normal-environment world; dimension-specific mechanics do not change.
 

design/log.md

@@ -95,8 +95,9 @@ description: Chronological record of material decisions affecting the Spigot Bas
 ## 2026-08-24 — Pocket Base mob-spawning control
 
 - Disabled natural hostile and passive mob spawning by default in new and existing Pocket Bases without a saved preference.
-- Added the persisted owner setting `/basesettings pocket mobs enable|disable`, contextual autocomplete, and status reporting.
-- Reapplied saved spawn flags when Pocket Base worlds load and restored the prior world setting when persistence fails.
+- Added independent persisted owner settings through `/basesettings pocket mobs <hostile|passive> <enable|disable>`, contextual autocomplete, and status reporting.
+- Migrated each legacy combined mob-spawning preference to both categories to preserve existing behavior.
+- Reapplied both saved spawn flags when Pocket Base worlds load and restored both prior world settings when persistence fails.
 - Verified the feature with `./gradlew clean check jar`.
 
 ## 2026-08-24 — Relocatable Pocket Base return portals

design/user-stories/us-018-control-pocket-base-mob-spawning.md

@@ -1,25 +1,27 @@
 ---
 type: User Story
 title: "US-018: Control Pocket Base mob spawning"
-description: Let Pocket Base owners control natural mob spawning in their private world, with spawning disabled by default.
+description: Let Pocket Base owners control hostile and passive natural mob spawning independently in their private world, with both disabled by default.
 status: done
 ---
 
 # US-018: Control Pocket Base mob spawning
 
-As a **Pocket Base owner**, I want to enable or disable natural mob spawning in my Pocket Base so that I can choose whether the private world supports normal mob activity.
+As a **Pocket Base owner**, I want to enable or disable hostile and passive natural mob spawning independently in my Pocket Base so that I can choose which kinds of normal mob activity its private world supports.
 
 ## Acceptance criteria
 
-- [x] Natural mob spawning is disabled by default in every new Pocket Base and in existing Pocket Bases that have no saved preference.
-- [x] A Pocket Base owner can use `/basesettings pocket mobs enable|disable` to control natural mob spawning in their own Pocket Base.
-- [x] The setting controls both hostile and passive natural spawning only in the owner's Pocket Base.
-- [x] The command is unavailable until Pocket Base I is unlocked.
-- [x] The command and its modes are offered through contextual autocomplete.
-- [x] `/basesettings status` displays the current Pocket Base mob-spawning setting.
-- [x] The preference persists across restarts and is reapplied when the Pocket Base world loads.
-- [x] Disabling natural spawning does not remove existing mobs or prevent explicitly spawned or summoned mobs.
-- [x] Persistence or world-application failures produce a clear failure message without reporting a successful change.
+- [x] Hostile and passive natural mob spawning are both disabled by default in every new Pocket Base and in existing Pocket Bases that have no saved preference.
+- [x] A Pocket Base owner can use `/basesettings pocket mobs hostile enable|disable` to control hostile natural mob spawning in their own Pocket Base.
+- [x] A Pocket Base owner can use `/basesettings pocket mobs passive enable|disable` to control passive natural mob spawning in their own Pocket Base.
+- [x] Changing one mob category does not change the other category.
+- [x] The commands are unavailable until Pocket Base I is unlocked.
+- [x] The commands, categories, and modes are offered through contextual autocomplete.
+- [x] `/basesettings status` displays the current hostile and passive Pocket Base mob-spawning settings.
+- [x] Both preferences persist across restarts and are reapplied when the Pocket Base world loads.
+- [x] Existing saved `mob-spawning-enabled` values migrate to both category preferences, preserving prior behavior.
+- [x] Disabling either natural-spawning category does not remove existing mobs or prevent explicitly spawned or summoned mobs.
+- [x] Persistence or world-application failures produce a clear failure message, restore both prior world flags, and do not report a successful change.
 
 ## Related
 

src/main/java/games/dmg/spigotbase/BaseSettingsCommand.java

@@ -69,9 +69,9 @@ final class BaseSettingsCommand implements CommandExecutor, TabCompleter {
                 && arguments[1].equalsIgnoreCase("upgrade")) {
             return purchasePocketUpgrade(player, state);
         }
-        if (arguments.length == 3 && arguments[0].equalsIgnoreCase("pocket")
+        if (arguments.length == 4 && arguments[0].equalsIgnoreCase("pocket")
                 && arguments[1].equalsIgnoreCase("mobs")) {
-            return updatePocketMobSpawning(player, arguments[2]);
+            return updatePocketMobSpawning(player, arguments[2], arguments[3]);
         }
         if (arguments.length == 4 && arguments[0].equalsIgnoreCase("pocket")
                 && arguments[1].equalsIgnoreCase("type")) {
@@ -240,7 +240,11 @@ final class BaseSettingsCommand implements CommandExecutor, TabCompleter {
         return true;
     }
 
-    private boolean updatePocketMobSpawning(Player player, String mode) {
+    private boolean updatePocketMobSpawning(
+        Player player,
+        String category,
+        String mode
+    ) {
         if (pocketBases == null) {
             player.sendMessage(ChatColor.RED + "Pocket Bases are currently unavailable.");
             return true;
@@ -256,17 +260,30 @@ final class BaseSettingsCommand implements CommandExecutor, TabCompleter {
             return true;
         }
         final PocketBaseState updated;
+        final boolean settingEnabled;
         try {
-            updated = pocketBases.setMobSpawning(player.getUniqueId(), enabled);
+            if (category.equalsIgnoreCase("hostile")) {
+                updated = pocketBases.setHostileMobSpawning(
+                    player.getUniqueId(), enabled
+                );
+                settingEnabled = updated.hostileMobSpawningEnabled();
+            } else if (category.equalsIgnoreCase("passive")) {
+                updated = pocketBases.setPassiveMobSpawning(
+                    player.getUniqueId(), enabled
+                );
+                settingEnabled = updated.passiveMobSpawningEnabled();
+            } else {
+                sendUsage(player);
+                return true;
+            }
         } catch (IOException | RuntimeException exception) {
             player.sendMessage(ChatColor.RED
                 + "The Pocket Base mob-spawning setting could not be changed.");
             return true;
         }
-        player.sendMessage(ChatColor.YELLOW + "Pocket Base mob spawning is now "
-            + (updated.mobSpawningEnabled()
-                ? ChatColor.GREEN + "enabled"
-                : ChatColor.RED + "disabled")
+        player.sendMessage(ChatColor.YELLOW + "Pocket Base "
+            + category.toLowerCase(Locale.ROOT) + " mob spawning is now "
+            + (settingEnabled ? ChatColor.GREEN + "enabled" : ChatColor.RED + "disabled")
             + ChatColor.YELLOW + ".");
         return true;
     }
@@ -514,8 +531,10 @@ final class BaseSettingsCommand implements CommandExecutor, TabCompleter {
             + settings.current().pocketBaseCurrencyMaterial().toLowerCase(Locale.ROOT)
             + " → /basesettings pocket upgrade; type="
             + pocket.biome().worldType().commandName() + "/" + pocket.biome().commandName()
-            + "; mob spawning="
-            + (pocket.mobSpawningEnabled() ? "enabled" : "disabled"));
+            + "; hostile spawning="
+            + (pocket.hostileMobSpawningEnabled() ? "enabled" : "disabled")
+            + "; passive spawning="
+            + (pocket.passiveMobSpawningEnabled() ? "enabled" : "disabled"));
     }
 
     private void showCooldownPath(Player player, PlayerState state) {
@@ -557,7 +576,9 @@ final class BaseSettingsCommand implements CommandExecutor, TabCompleter {
         if (arguments.length == 3 && arguments[0].equalsIgnoreCase("pocket")) {
             String prefix = arguments[2].toLowerCase(Locale.ROOT);
             if (arguments[1].equalsIgnoreCase("mobs")) {
-                return ENABLE_MODES.stream().filter(mode -> mode.startsWith(prefix)).toList();
+                return List.of("hostile", "passive").stream()
+                    .filter(category -> category.startsWith(prefix))
+                    .toList();
             }
             if (arguments[1].equalsIgnoreCase("type")) {
                 return POCKET_WORLD_TYPES.stream()
@@ -565,9 +586,16 @@ final class BaseSettingsCommand implements CommandExecutor, TabCompleter {
                     .toList();
             }
         }
-        if (arguments.length == 4 && arguments[0].equalsIgnoreCase("pocket")
-                && arguments[1].equalsIgnoreCase("type")) {
+        if (arguments.length == 4 && arguments[0].equalsIgnoreCase("pocket")) {
             String prefix = arguments[3].toLowerCase(Locale.ROOT);
+            if (arguments[1].equalsIgnoreCase("mobs")
+                    && (arguments[2].equalsIgnoreCase("hostile")
+                        || arguments[2].equalsIgnoreCase("passive"))) {
+                return ENABLE_MODES.stream()
+                    .filter(mode -> mode.startsWith(prefix))
+                    .toList();
+            }
+            if (arguments[1].equalsIgnoreCase("type")) {
                 return PocketBaseWorldType.fromCommand(arguments[2])
                     .map(PocketBaseBiome::commandNames)
                     .orElse(List.of())
@@ -575,6 +603,7 @@ final class BaseSettingsCommand implements CommandExecutor, TabCompleter {
                     .filter(biome -> biome.startsWith(prefix))
                     .toList();
             }
+        }
         return List.of();
     }
 
@@ -634,7 +663,8 @@ final class BaseSettingsCommand implements CommandExecutor, TabCompleter {
 
     private static void sendUsage(Player player) {
         player.sendMessage(ChatColor.RED + "Usage: /basesettings "
-            + "[status|upgrade|pocket upgrade|pocket mobs <enable|disable>"
+            + "[status|upgrade|pocket upgrade|pocket mobs "
+            + "<hostile|passive> <enable|disable>"
             + "|pocket type <void|nether|overworld> <subtype>"
             + "|visitors <allowed|blocked>|navigation <enable|disable>"
             + "|flight <enable|disable>|border <enable|disable>"

src/main/java/games/dmg/spigotbase/PocketBaseManager.java

@@ -92,20 +92,48 @@ final class PocketBaseManager {
         }
     }
 
-    PocketBaseState setMobSpawning(UUID ownerId, boolean enabled) throws IOException {
+    PocketBaseState setHostileMobSpawning(UUID ownerId, boolean enabled)
+            throws IOException {
         PocketBaseState current = states.state(ownerId);
+        return setMobSpawning(
+            current,
+            enabled,
+            current.passiveMobSpawningEnabled(),
+            state -> state.withHostileMobSpawningEnabled(enabled)
+        );
+    }
+
+    PocketBaseState setPassiveMobSpawning(UUID ownerId, boolean enabled)
+            throws IOException {
+        PocketBaseState current = states.state(ownerId);
+        return setMobSpawning(
+            current,
+            current.hostileMobSpawningEnabled(),
+            enabled,
+            state -> state.withPassiveMobSpawningEnabled(enabled)
+        );
+    }
+
+    private PocketBaseState setMobSpawning(
+        PocketBaseState current,
+        boolean hostileEnabled,
+        boolean passiveEnabled,
+        java.util.function.UnaryOperator<PocketBaseState> update
+    ) throws IOException {
         if (current.level() < 1) {
             throw new IllegalStateException("Pocket Base I is still locked");
         }
-        worlds.setMobSpawning(ownerId, enabled);
+        UUID ownerId = current.ownerId();
+        worlds.setMobSpawning(ownerId, hostileEnabled, passiveEnabled);
         try {
-            return states.updateAndSave(
-                ownerId,
-                state -> state.withMobSpawningEnabled(enabled)
-            );
+            return states.updateAndSave(ownerId, update);
         } catch (IOException | RuntimeException exception) {
             try {
-                worlds.setMobSpawning(ownerId, current.mobSpawningEnabled());
+                worlds.setMobSpawning(
+                    ownerId,
+                    current.hostileMobSpawningEnabled(),
+                    current.passiveMobSpawningEnabled()
+                );
             } catch (RuntimeException rollbackFailure) {
                 exception.addSuppressed(rollbackFailure);
             }

src/main/java/games/dmg/spigotbase/PocketBaseState.java

@@ -8,7 +8,8 @@ public record PocketBaseState(
     int level,
     Optional<PocketPortalLocation> entrance,
     Optional<PocketPortalLocation> returnPortal,
-    boolean mobSpawningEnabled,
+    boolean hostileMobSpawningEnabled,
+    boolean passiveMobSpawningEnabled,
     PocketBaseBiome biome
 ) {
     public PocketBaseState {
@@ -32,73 +33,64 @@ public record PocketBaseState(
         Optional<PocketPortalLocation> entrance
     ) {
         this(
-            ownerId, level, entrance, Optional.empty(), false, PocketBaseBiome.THE_VOID
-        );
-    }
-
-    public PocketBaseState(
-        UUID ownerId,
-        int level,
-        Optional<PocketPortalLocation> entrance,
-        boolean mobSpawningEnabled
-    ) {
-        this(
-            ownerId, level, entrance, Optional.empty(), mobSpawningEnabled,
-            PocketBaseBiome.THE_VOID
-        );
-    }
-
-    public PocketBaseState(
-        UUID ownerId,
-        int level,
-        Optional<PocketPortalLocation> entrance,
-        Optional<PocketPortalLocation> returnPortal,
-        boolean mobSpawningEnabled
-    ) {
-        this(
-            ownerId, level, entrance, returnPortal, mobSpawningEnabled,
+            ownerId, level, entrance, Optional.empty(), false, false,
             PocketBaseBiome.THE_VOID
         );
     }
 
     public static PocketBaseState locked(UUID ownerId) {
         return new PocketBaseState(
-            ownerId, 0, Optional.empty(), Optional.empty(), false,
+            ownerId, 0, Optional.empty(), Optional.empty(), false, false,
             PocketBaseBiome.THE_VOID
         );
     }
 
     public PocketBaseState withLevel(int newLevel) {
         return new PocketBaseState(
-            ownerId, newLevel, entrance, returnPortal, mobSpawningEnabled, biome
+            ownerId, newLevel, entrance, returnPortal, hostileMobSpawningEnabled,
+            passiveMobSpawningEnabled, biome
         );
     }
 
     public PocketBaseState withEntrance(PocketPortalLocation portal) {
         return new PocketBaseState(
-            ownerId, level, Optional.of(portal), returnPortal, mobSpawningEnabled, biome
+            ownerId, level, Optional.of(portal), returnPortal,
+            hostileMobSpawningEnabled, passiveMobSpawningEnabled, biome
         );
     }
 
     public PocketBaseState withoutEntrance() {
         return new PocketBaseState(
-            ownerId, level, Optional.empty(), returnPortal, mobSpawningEnabled, biome
+            ownerId, level, Optional.empty(), returnPortal, hostileMobSpawningEnabled,
+            passiveMobSpawningEnabled, biome
         );
     }
 
     public PocketBaseState withReturnPortal(PocketPortalLocation portal) {
         return new PocketBaseState(
-            ownerId, level, entrance, Optional.of(portal), mobSpawningEnabled, biome
+            ownerId, level, entrance, Optional.of(portal), hostileMobSpawningEnabled,
+            passiveMobSpawningEnabled, biome
         );
     }
 
-    public PocketBaseState withMobSpawningEnabled(boolean enabled) {
-        return new PocketBaseState(ownerId, level, entrance, returnPortal, enabled, biome);
+    public PocketBaseState withHostileMobSpawningEnabled(boolean enabled) {
+        return new PocketBaseState(
+            ownerId, level, entrance, returnPortal, enabled,
+            passiveMobSpawningEnabled, biome
+        );
+    }
+
+    public PocketBaseState withPassiveMobSpawningEnabled(boolean enabled) {
+        return new PocketBaseState(
+            ownerId, level, entrance, returnPortal, hostileMobSpawningEnabled,
+            enabled, biome
+        );
     }
 
     public PocketBaseState withBiome(PocketBaseBiome selectedBiome) {
         return new PocketBaseState(
-            ownerId, level, entrance, returnPortal, mobSpawningEnabled, selectedBiome
+            ownerId, level, entrance, returnPortal, hostileMobSpawningEnabled,
+            passiveMobSpawningEnabled, selectedBiome
         );
     }
 }

src/main/java/games/dmg/spigotbase/PocketBaseWorldService.java

@@ -42,7 +42,11 @@ final class PocketBaseWorldService {
         for (PocketBaseState state : states.values()) {
             if (state.level() > 0) {
                 setBiome(state.ownerId(), state.level(), state.biome());
-                setMobSpawning(state.ownerId(), state.mobSpawningEnabled());
+                setMobSpawning(
+                    state.ownerId(),
+                    state.hostileMobSpawningEnabled(),
+                    state.passiveMobSpawningEnabled()
+                );
             }
         }
     }
@@ -91,8 +95,12 @@ final class PocketBaseWorldService {
         return ensureWorld(ownerId);
     }
 
-    void setMobSpawning(UUID ownerId, boolean enabled) {
-        ensureWorld(ownerId).setSpawnFlags(enabled, enabled);
+    void setMobSpawning(
+        UUID ownerId,
+        boolean hostileEnabled,
+        boolean passiveEnabled
+    ) {
+        ensureWorld(ownerId).setSpawnFlags(hostileEnabled, passiveEnabled);
     }
 
     void setBiome(UUID ownerId, int level, PocketBaseBiome biome) {

src/main/java/games/dmg/spigotbase/YamlPocketBaseRepository.java

@@ -44,7 +44,8 @@ public final class YamlPocketBaseRepository {
                     level,
                     loadPortal(yaml, path + ".entrance"),
                     loadPortal(yaml, path + ".return-portal"),
-                    yaml.getBoolean(path + ".mob-spawning-enabled", false),
+                    loadMobPreference(yaml, path, "hostile-mob-spawning-enabled"),
+                    loadMobPreference(yaml, path, "passive-mob-spawning-enabled"),
                     loadBiome(yaml, path)
                 );
                 states.put(ownerId, state);
@@ -64,7 +65,14 @@ public final class YamlPocketBaseRepository {
         for (PocketBaseState state : states.values()) {
             String path = "owners." + state.ownerId();
             yaml.set(path + ".level", state.level());
-            yaml.set(path + ".mob-spawning-enabled", state.mobSpawningEnabled());
+            yaml.set(
+                path + ".hostile-mob-spawning-enabled",
+                state.hostileMobSpawningEnabled()
+            );
+            yaml.set(
+                path + ".passive-mob-spawning-enabled",
+                state.passiveMobSpawningEnabled()
+            );
             yaml.set(path + ".world-type", state.biome().worldType().commandName());
             yaml.set(path + ".biome", state.biome().commandName());
             state.entrance().ifPresent(portal -> savePortal(yaml, path + ".entrance", portal));
@@ -90,6 +98,17 @@ public final class YamlPocketBaseRepository {
         }
     }
 
+    private static boolean loadMobPreference(
+        YamlConfiguration yaml,
+        String path,
+        String categoryKey
+    ) {
+        return yaml.getBoolean(
+            path + "." + categoryKey,
+            yaml.getBoolean(path + ".mob-spawning-enabled", false)
+        );
+    }
+
     private static PocketBaseBiome loadBiome(YamlConfiguration yaml, String path) {
         String worldTypeName = yaml.getString(path + ".world-type");
         String biomeName = yaml.getString(path + ".biome");

src/test/java/games/dmg/spigotbase/BaseSettingsCommandTest.java

@@ -119,10 +119,23 @@ final class BaseSettingsCommandTest {
                 new String[] {"pocket", "type", "nether", "c"}
             )
         );
+        assertEquals(
+            List.of("hostile"),
+            command.onTabComplete(
+                null, null, "basesettings", new String[] {"pocket", "mobs", "h"}
+            )
+        );
+        assertEquals(
+            List.of("passive"),
+            command.onTabComplete(
+                null, null, "basesettings", new String[] {"pocket", "mobs", "p"}
+            )
+        );
         assertEquals(
             List.of("enable"),
             command.onTabComplete(
-                null, null, "basesettings", new String[] {"pocket", "mobs", "e"}
+                null, null, "basesettings",
+                new String[] {"pocket", "mobs", "hostile", "e"}
             )
         );
         for (String setting : List.of("navigation", "flight", "border", "spawnable", "bossbar")) {
@@ -296,7 +309,7 @@ final class BaseSettingsCommandTest {
     }
 
     @Test
-    void pocketOwnerCanEnableNaturalMobSpawning() throws Exception {
+    void pocketOwnerCanEnableHostileMobSpawningWithoutChangingPassive() throws Exception {
         UUID playerId = UUID.randomUUID();
         Player player = mock(Player.class);
         when(player.getUniqueId()).thenReturn(playerId);
@@ -305,11 +318,13 @@ final class BaseSettingsCommandTest {
         when(stateManager.player(playerId, "Builder"))
             .thenReturn(PlayerState.newPlayer(playerId, "Builder"));
         PocketBaseManager pocketBases = mock(PocketBaseManager.class);
-        when(pocketBases.state(playerId)).thenReturn(
-            new PocketBaseState(playerId, 1, java.util.Optional.empty(), false)
+        PocketBaseState current = new PocketBaseState(
+            playerId, 1, java.util.Optional.empty(), java.util.Optional.empty(),
+            false, true, PocketBaseBiome.THE_VOID
         );
-        when(pocketBases.setMobSpawning(playerId, true)).thenReturn(
-            new PocketBaseState(playerId, 1, java.util.Optional.empty(), true)
+        when(pocketBases.state(playerId)).thenReturn(current);
+        when(pocketBases.setHostileMobSpawning(playerId, true)).thenReturn(
+            current.withHostileMobSpawningEnabled(true)
         );
         BaseSettingsCommand command = new BaseSettingsCommand(
             stateManager,
@@ -318,13 +333,14 @@ final class BaseSettingsCommandTest {
             pocketBases
         );
 
-        command.onCommand(
-            player, null, "basesettings", new String[] {"pocket", "mobs", "enable"}
-        );
+        command.onCommand(player, null, "basesettings", new String[] {
+            "pocket", "mobs", "hostile", "enable"
+        });
 
-        verify(pocketBases).setMobSpawning(playerId, true);
+        verify(pocketBases).setHostileMobSpawning(playerId, true);
+        verify(pocketBases, never()).setPassiveMobSpawning(playerId, true);
         verify(player).sendMessage(org.mockito.ArgumentMatchers.<String>argThat(
-            message -> message.contains("mob spawning") && message.contains("enabled")
+            message -> message.contains("hostile mob spawning") && message.contains("enabled")
         ));
     }
 
@@ -339,9 +355,9 @@ final class BaseSettingsCommandTest {
             .thenReturn(PlayerState.newPlayer(playerId, "Builder"));
         PocketBaseManager pocketBases = mock(PocketBaseManager.class);
         when(pocketBases.state(playerId)).thenReturn(
-            new PocketBaseState(playerId, 1, java.util.Optional.empty(), false)
+            new PocketBaseState(playerId, 1, java.util.Optional.empty())
         );
-        when(pocketBases.setMobSpawning(playerId, true))
+        when(pocketBases.setPassiveMobSpawning(playerId, true))
             .thenThrow(new IOException("save failed"));
         BaseSettingsCommand command = new BaseSettingsCommand(
             stateManager,
@@ -350,9 +366,9 @@ final class BaseSettingsCommandTest {
             pocketBases
         );
 
-        command.onCommand(
-            player, null, "basesettings", new String[] {"pocket", "mobs", "enable"}
-        );
+        command.onCommand(player, null, "basesettings", new String[] {
+            "pocket", "mobs", "passive", "enable"
+        });
 
         verify(player).sendMessage(org.mockito.ArgumentMatchers.<String>argThat(
             message -> message.contains("could not be changed")
@@ -380,11 +396,11 @@ final class BaseSettingsCommandTest {
             pocketBases
         );
 
-        command.onCommand(
-            player, null, "basesettings", new String[] {"pocket", "mobs", "enable"}
-        );
+        command.onCommand(player, null, "basesettings", new String[] {
+            "pocket", "mobs", "hostile", "enable"
+        });
 
-        verify(pocketBases, never()).setMobSpawning(playerId, true);
+        verify(pocketBases, never()).setHostileMobSpawning(playerId, true);
         verify(player).sendMessage(org.mockito.ArgumentMatchers.<String>argThat(
             message -> message.contains("Pocket Base I") && message.contains("locked")
         ));
@@ -429,7 +445,7 @@ final class BaseSettingsCommandTest {
     }
 
     @Test
-    void statusDisplaysPocketMobSpawningPreference() {
+    void statusDisplaysPocketMobSpawningPreferences() {
         UUID playerId = UUID.randomUUID();
         Player player = mock(Player.class);
         when(player.getUniqueId()).thenReturn(playerId);
@@ -439,7 +455,10 @@ final class BaseSettingsCommandTest {
             .thenReturn(PlayerState.newPlayer(playerId, "Builder"));
         PocketBaseManager pocketBases = mock(PocketBaseManager.class);
         when(pocketBases.state(playerId)).thenReturn(
-            new PocketBaseState(playerId, 1, java.util.Optional.empty(), false)
+            new PocketBaseState(
+                playerId, 1, java.util.Optional.empty(), java.util.Optional.empty(),
+                true, false, PocketBaseBiome.THE_VOID
+            )
         );
         BaseSettingsCommand command = new BaseSettingsCommand(
             stateManager,
@@ -453,7 +472,8 @@ final class BaseSettingsCommandTest {
         verify(player).sendMessage(org.mockito.ArgumentMatchers.<String>argThat(
             message -> message.contains("Pocket Base 1")
                 && message.contains("type=void/the_void")
-                && message.contains("mob spawning=disabled")
+                && message.contains("hostile spawning=enabled")
+                && message.contains("passive spawning=disabled")
         ));
     }
 

src/test/java/games/dmg/spigotbase/PocketBaseManagerTest.java

@@ -25,7 +25,8 @@ final class PocketBaseManagerTest {
         PocketBaseStateManager states = mock(PocketBaseStateManager.class);
         PocketBaseWorldService worlds = mock(PocketBaseWorldService.class);
         when(states.state(ownerId)).thenReturn(new PocketBaseState(
-            ownerId, 1, Optional.empty(), Optional.of(relocated), false
+            ownerId, 1, Optional.empty(), Optional.of(relocated), false, false,
+            PocketBaseBiome.THE_VOID
         ));
         PocketBaseManager manager = new PocketBaseManager(
             states,
@@ -58,9 +59,12 @@ final class PocketBaseManagerTest {
     }
 
     @Test
-    void persistsAndAppliesMobSpawningPreference() throws Exception {
+    void persistsAndAppliesHostileMobSpawningWithoutChangingPassive() throws Exception {
         UUID ownerId = UUID.randomUUID();
-        PocketBaseState current = new PocketBaseState(ownerId, 1, Optional.empty(), false);
+        PocketBaseState current = new PocketBaseState(
+            ownerId, 1, Optional.empty(), Optional.empty(), false, true,
+            PocketBaseBiome.THE_VOID
+        );
         PocketBaseStateManager states = mock(PocketBaseStateManager.class);
         PocketBaseWorldService worlds = mock(PocketBaseWorldService.class);
         when(states.state(ownerId)).thenReturn(current);
@@ -76,10 +80,12 @@ final class PocketBaseManagerTest {
             new PluginSettingsProvider(PluginSettings.from(Map.of()))
         );
 
-        manager.setMobSpawning(ownerId, true);
+        PocketBaseState updated = manager.setHostileMobSpawning(ownerId, true);
 
+        assertEquals(true, updated.hostileMobSpawningEnabled());
+        assertEquals(true, updated.passiveMobSpawningEnabled());
         InOrder order = inOrder(worlds, states);
-        order.verify(worlds).setMobSpawning(ownerId, true);
+        order.verify(worlds).setMobSpawning(ownerId, true, true);
         order.verify(states).updateAndSave(
             org.mockito.ArgumentMatchers.eq(ownerId), org.mockito.ArgumentMatchers.any()
         );
@@ -137,9 +143,12 @@ final class PocketBaseManagerTest {
     }
 
     @Test
-    void restoresWorldSettingWhenPersistenceFails() throws Exception {
+    void restoresBothWorldSettingsWhenPersistenceFails() throws Exception {
         UUID ownerId = UUID.randomUUID();
-        PocketBaseState current = new PocketBaseState(ownerId, 1, Optional.empty(), false);
+        PocketBaseState current = new PocketBaseState(
+            ownerId, 1, Optional.empty(), Optional.empty(), true, false,
+            PocketBaseBiome.THE_VOID
+        );
         PocketBaseStateManager states = mock(PocketBaseStateManager.class);
         PocketBaseWorldService worlds = mock(PocketBaseWorldService.class);
         when(states.state(ownerId)).thenReturn(current);
@@ -151,9 +160,10 @@ final class PocketBaseManagerTest {
             new PluginSettingsProvider(PluginSettings.from(Map.of()))
         );
 
-        assertThrows(IOException.class, () -> manager.setMobSpawning(ownerId, true));
+        assertThrows(IOException.class,
+            () -> manager.setPassiveMobSpawning(ownerId, true));
 
-        verify(worlds).setMobSpawning(ownerId, true);
-        verify(worlds).setMobSpawning(ownerId, false);
+        verify(worlds).setMobSpawning(ownerId, true, true);
+        verify(worlds).setMobSpawning(ownerId, true, false);
     }
 }

src/test/java/games/dmg/spigotbase/PocketBaseWorldServiceTest.java

@@ -93,10 +93,13 @@ final class PocketBaseWorldServiceTest {
 
         service.loadExisting(Map.of(
             ownerId,
-            new PocketBaseState(ownerId, 1, Optional.empty(), true)
+            new PocketBaseState(
+                ownerId, 1, Optional.empty(), Optional.empty(), true, false,
+                PocketBaseBiome.THE_VOID
+            )
         ));
 
-        verify(world).setSpawnFlags(true, true);
+        verify(world).setSpawnFlags(true, false);
     }
 
     @Test

src/test/java/games/dmg/spigotbase/YamlPocketBaseRepositoryTest.java

@@ -30,6 +30,7 @@ final class YamlPocketBaseRepositoryTest {
                 worldId, "pocket", 20, 65, 12, PocketPortalAxis.Z
             )),
             true,
+            false,
             PocketBaseBiome.CRIMSON_FOREST
         );
         YamlPocketBaseRepository repository = new YamlPocketBaseRepository(
@@ -50,8 +51,23 @@ final class YamlPocketBaseRepositoryTest {
 
         PocketBaseState loaded = repository.load().get(ownerId);
 
-        assertFalse(loaded.mobSpawningEnabled());
+        assertFalse(loaded.hostileMobSpawningEnabled());
+        assertFalse(loaded.passiveMobSpawningEnabled());
         assertTrue(loaded.returnPortal().isEmpty());
         assertEquals(PocketBaseBiome.THE_VOID, loaded.biome());
     }
+
+    @Test
+    void migratesLegacyMobPreferenceToBothCategories() throws Exception {
+        UUID ownerId = UUID.randomUUID();
+        Path stateFile = temporaryDirectory.resolve("pocket-bases.yml");
+        Files.writeString(stateFile, "owners:\n  " + ownerId
+            + ":\n    level: 1\n    mob-spawning-enabled: true\n");
+        YamlPocketBaseRepository repository = new YamlPocketBaseRepository(stateFile);
+
+        PocketBaseState loaded = repository.load().get(ownerId);
+
+        assertTrue(loaded.hostileMobSpawningEnabled());
+        assertTrue(loaded.passiveMobSpawningEnabled());
+    }
 }