Add CraftEngine custom block support

pom.xml

@@ -59,6 +59,7 @@
         <bentobox.version>3.13.0</bentobox.version>
         <items-adder.version>4.0.10</items-adder.version>
         <nexo.version>1.8.0</nexo.version>
+        <craftengine.version>0.0.67</craftengine.version>
         <level.version>2.6.2</level.version>
         <bank.version>1.3.0</bank.version>
         <!-- Revision variable removes warning about dynamic version -->
@@ -159,6 +160,13 @@
             <releases><enabled>true</enabled></releases>
             <snapshots><enabled>false</enabled></snapshots>
         </repository>
+        <!-- CraftEngine API -->
+        <repository>
+            <id>momirealms-releases</id>
+            <url>https://repo.momirealms.net/releases/</url>
+            <releases><enabled>true</enabled></releases>
+            <snapshots><enabled>false</enabled></snapshots>
+        </repository>
         <!-- General Maven public mirror -->
         <repository>
             <id>codemc-repo</id>
@@ -271,6 +279,30 @@
                 </exclusion>
             </exclusions>
         </dependency>
+        <dependency>
+            <groupId>net.momirealms</groupId>
+            <artifactId>craft-engine-core</artifactId>
+            <version>${craftengine.version}</version>
+            <scope>provided</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>*</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>net.momirealms</groupId>
+            <artifactId>craft-engine-bukkit</artifactId>
+            <version>${craftengine.version}</version>
+            <scope>provided</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>*</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
     </dependencies>
 
     <build>

src/main/java/world/bentobox/aoneblock/AOneBlock.java

@@ -22,13 +22,15 @@
 import world.bentobox.aoneblock.listeners.BossBarListener;
 import world.bentobox.aoneblock.listeners.HoloListener;
 import world.bentobox.aoneblock.listeners.InfoListener;
+import world.bentobox.aoneblock.listeners.CraftEngineListener;
 import world.bentobox.aoneblock.listeners.ItemsAdderListener;
 import world.bentobox.aoneblock.listeners.JoinLeaveListener;
 import world.bentobox.aoneblock.listeners.NexoListener;
 import world.bentobox.aoneblock.listeners.NoBlockHandler;
 import world.bentobox.aoneblock.listeners.StartSafetyListener;
 import world.bentobox.aoneblock.oneblocks.OneBlockCustomBlockCreator;
 import world.bentobox.aoneblock.oneblocks.OneBlocksManager;
+import world.bentobox.aoneblock.oneblocks.customblock.CraftEngineCustomBlock;
 import world.bentobox.aoneblock.oneblocks.customblock.ItemsAdderCustomBlock;
 import world.bentobox.aoneblock.oneblocks.customblock.NexoCustomBlock;
 import world.bentobox.aoneblock.requests.IslandStatsHandler;
@@ -57,6 +59,8 @@ public class AOneBlock extends GameModeAddon {
     private boolean hasItemsAdder = false;
     /** Whether Nexo is present on the server */
     private boolean hasNexo = false;
+    /** Whether CraftEngine is present on the server */
+    private boolean hasCraftEngine = false;
 
     /** The addon settings */
     private Settings settings;
@@ -127,6 +131,13 @@ public void onLoad() {
             OneBlockCustomBlockCreator.register("nexo", NexoCustomBlock::fromMap);
             hasNexo = true;
         }
+        // Check if CraftEngine exists, if yes register listener
+        if (Bukkit.getPluginManager().getPlugin("CraftEngine") != null) {
+            registerListener(new CraftEngineListener(this));
+            OneBlockCustomBlockCreator.register(CraftEngineCustomBlock::fromId);
+            OneBlockCustomBlockCreator.register("craftengine", CraftEngineCustomBlock::fromMap);
+            hasCraftEngine = true;
+        }
         // Save the default config from config.yml
         saveDefaultConfig();
         // Load settings from config.yml. This will check if there are any issues with
@@ -416,6 +427,13 @@ public boolean hasNexo() {
         return hasNexo;
     }
 
+    /**
+     * @return true if CraftEngine is on the server
+     */
+    public boolean hasCraftEngine() {
+        return hasCraftEngine;
+    }
+
     /**
      * Set the addon's world. Used only for testing.
      * @param world world

src/main/java/world/bentobox/aoneblock/listeners/CraftEngineListener.java

@@ -0,0 +1,28 @@
+package world.bentobox.aoneblock.listeners;
+
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+
+import net.momirealms.craftengine.bukkit.api.event.CraftEngineReloadEvent;
+import world.bentobox.aoneblock.AOneBlock;
+
+/**
+ * Handles CraftEngineReloadEvent which is fired when CraftEngine loads or reloads its data
+ */
+public class CraftEngineListener implements Listener {
+
+    private final AOneBlock addon;
+
+    public CraftEngineListener(AOneBlock addon) {
+        this.addon = addon;
+    }
+
+    /**
+     * Handle CraftEngineReloadEvent and reload the addon when triggered
+     * @param e - CraftEngineReloadEvent
+     */
+    @EventHandler
+    public void onReload(CraftEngineReloadEvent e) {
+        addon.loadData();
+    }
+}

src/main/java/world/bentobox/aoneblock/oneblocks/customblock/CraftEngineCustomBlock.java

@@ -0,0 +1,48 @@
+package world.bentobox.aoneblock.oneblocks.customblock;
+
+import java.util.Map;
+import java.util.Objects;
+import java.util.Optional;
+
+import org.bukkit.Material;
+import org.bukkit.block.Block;
+
+import net.momirealms.craftengine.bukkit.api.CraftEngineBlocks;
+import net.momirealms.craftengine.core.block.CustomBlock;
+import net.momirealms.craftengine.core.util.Key;
+import world.bentobox.aoneblock.AOneBlock;
+import world.bentobox.aoneblock.oneblocks.OneBlockCustomBlock;
+import world.bentobox.bentobox.BentoBox;
+
+public class CraftEngineCustomBlock implements OneBlockCustomBlock {
+    private final String blockId;
+
+    public CraftEngineCustomBlock(String blockId) {
+        this.blockId = blockId;
+    }
+
+    public static Optional<CraftEngineCustomBlock> fromId(String id) {
+        CustomBlock block = CraftEngineBlocks.byId(Key.of(id));
+        if (block != null) {
+            return Optional.of(new CraftEngineCustomBlock(id));
+        }
+        return Optional.empty();
+    }
+
+    public static Optional<CraftEngineCustomBlock> fromMap(Map<?, ?> map) {
+        return Optional
+                .ofNullable(Objects.toString(map.get("id"), null))
+                .flatMap(CraftEngineCustomBlock::fromId);
+    }
+
+    @Override
+    public void execute(AOneBlock addon, Block block) {
+        try {
+            block.setType(Material.AIR);
+            CraftEngineBlocks.place(block.getLocation(), Key.of(blockId), false);
+        } catch (Exception e) {
+            BentoBox.getInstance().logError("Could not place CraftEngine block " + blockId + ": " + e.getMessage());
+            block.setType(Material.STONE);
+        }
+    }
+}

src/test/java/world/bentobox/aoneblock/oneblocks/customblock/CraftEngineCustomBlockTest.java

@@ -0,0 +1,30 @@
+package world.bentobox.aoneblock.oneblocks.customblock;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+
+/**
+ * Unit tests for {@link CraftEngineCustomBlock#fromMap(Map)}.
+ * <p>
+ * Because CraftEngine is an optional runtime dependency, the {@code fromId}
+ * path cannot be exercised without a live server. These tests cover the
+ * map-parsing entry point and the factory registration in
+ * {@link world.bentobox.aoneblock.oneblocks.OneBlockCustomBlockCreator}.
+ */
+class CraftEngineCustomBlockTest {
+
+    @Test
+    void fromMapReturnsEmptyWhenIdMissing() {
+        Map<String, Object> map = new LinkedHashMap<>();
+        map.put("type", "craftengine");
+        // no "id" key
+
+        var result = CraftEngineCustomBlock.fromMap(map);
+
+        assertTrue(result.isEmpty(), "Should return empty when 'id' is missing");
+    }
+}