为家具添加自定义掉落物位置

bukkit/loader/src/main/resources/resources/default/configuration/furniture.yml

@@ -17,6 +17,7 @@ items:
             place: minecraft:block.bamboo_wood.place
         placement:
           ground:
+            loot-spawn-offset: 0.5,0.5,0
             rules:
               # ANY / FOUR / EIGHT / SIXTEEN / NORTH / EAST / WEST / SOUTH
               rotation: FOUR
@@ -61,6 +62,7 @@ items:
             place: minecraft:block.lantern.place
         placement:
           ground:
+            loot-spawn-offset: 0,0.2,0
             rules:
               rotation: ANY
               alignment: QUARTER
@@ -111,6 +113,7 @@ items:
             place: minecraft:block.bamboo_wood.place
         placement:
           ground:
+            loot-spawn-offset: 0,0.4,0
             rules:
               rotation: ANY
               alignment: ANY

bukkit/src/main/java/net/momirealms/craftengine/bukkit/api/CraftEngineFurniture.java

@@ -263,7 +263,7 @@ public final class CraftEngineFurniture {
                               @Nullable net.momirealms.craftengine.core.entity.player.Player player,
                               boolean dropLoot,
                               boolean playSound) {
-        Location location = loadedFurniture.location();
+        Location location = loadedFurniture.dropLocation();
         loadedFurniture.destroy();
         LootTable<ItemStack> lootTable = (LootTable<ItemStack>) loadedFurniture.config().lootTable();
         Vec3d vec3d = LocationUtils.toVec3d(location);

bukkit/src/main/java/net/momirealms/craftengine/bukkit/entity/furniture/BukkitFurnitureManager.java

@@ -124,6 +124,8 @@ public class BukkitFurnitureManager extends AbstractFurnitureManager {
                 AnchorType anchorType = AnchorType.valueOf(entry.getKey().toUpperCase(Locale.ENGLISH));
                 Map<String, Object> placementArguments = MiscUtils.castToMap(entry.getValue(), true);
 
+                Optional<Vector3f> optionalLootSpawnOffset = Optional.ofNullable(placementArguments.get("loot-spawn-offset")).map(it -> MiscUtils.getAsVector3f(it, "loot-spawn-offset"));
+
                 // furniture display elements
                 List<FurnitureElement> elements = new ArrayList<>();
                 List<Map<String, Object>> elementConfigs = (List<Map<String, Object>>) placementArguments.getOrDefault("elements", List.of());
@@ -178,7 +180,8 @@ public class BukkitFurnitureManager extends AbstractFurnitureManager {
                             hitboxes.toArray(new HitBox[0]),
                             rotationRule,
                             alignmentRule,
-                            externalModel
+                            externalModel,
+                            optionalLootSpawnOffset
                     ));
                 } else {
                     placements.put(anchorType, new CustomFurniture.Placement(
@@ -186,7 +189,8 @@ public class BukkitFurnitureManager extends AbstractFurnitureManager {
                             hitboxes.toArray(new HitBox[0]),
                             RotationRule.ANY,
                             AlignmentRule.CENTER,
-                            externalModel
+                            externalModel,
+                            optionalLootSpawnOffset
                     ));
                 }
             }

bukkit/src/main/java/net/momirealms/craftengine/bukkit/entity/furniture/LoadedFurniture.java

@@ -75,9 +75,9 @@ public class LoadedFurniture implements Furniture {
             } catch (Exception e) {
                 CraftEngine.instance().logger().warn("Failed to load external model for furniture " + id, e);
             }
-            hasExternalModel = true;
+            this.hasExternalModel = true;
         } else {
-            hasExternalModel = false;
+            this.hasExternalModel = false;
         }
 
         float yaw = this.location.getYaw();
@@ -176,6 +176,17 @@ public class LoadedFurniture implements Furniture {
         return baseEntity().isValid();
     }
 
+    @NotNull
+    public Location dropLocation() {
+        Optional<Vector3f> dropOffset = config().getPlacement(this.anchorType).dropOffset();
+        if (dropOffset.isEmpty()) {
+            return location();
+        }
+        Quaternionf conjugated = QuaternionUtils.toQuaternionf(0, Math.toRadians(180 - this.location.getYaw()), 0).conjugate();
+        Vector3f offset = conjugated.transform(new Vector3f(dropOffset.get()));
+        return new Location(this.location.getWorld(), this.location.getX() + offset.x, this.location.getY() + offset.y, this.location.getZ() - offset.z);
+    }
+
     @Override
     public void destroy() {
         if (!isValid()) {

core/src/main/java/net/momirealms/craftengine/core/entity/furniture/CustomFurniture.java

@@ -4,6 +4,7 @@ import net.momirealms.craftengine.core.loot.LootTable;
 import net.momirealms.craftengine.core.util.Key;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import org.joml.Vector3f;
 
 import java.util.EnumMap;
 import java.util.Optional;
@@ -60,6 +61,7 @@ public class CustomFurniture {
                             HitBox[] hitBoxes,
                             RotationRule rotationRule,
                             AlignmentRule alignmentRule,
-                            Optional<ExternalModel> externalModel) {
+                            Optional<ExternalModel> externalModel,
+                            Optional<Vector3f> dropOffset) {
     }
 }