Fix loot table NPE (#1286)

arclight-common/src/main/java/io/izzel/arclight/common/bridge/core/world/storage/loot/LootDataManagerBridge.java

@@ -0,0 +1,8 @@
+package io.izzel.arclight.common.bridge.core.world.storage.loot;
+
+import net.minecraft.world.level.storage.loot.LootTable;
+
+public interface LootDataManagerBridge {
+
+    boolean bridge$isRegistered(LootTable lootTable);
+}

arclight-common/src/main/java/io/izzel/arclight/common/mixin/core/world/level/storage/loot/LootDataManagerMixin.java

@@ -1,10 +1,12 @@
 package io.izzel.arclight.common.mixin.core.world.level.storage.loot;
 
 import com.google.common.collect.ImmutableMap;
+import io.izzel.arclight.common.bridge.core.world.storage.loot.LootDataManagerBridge;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.world.level.storage.loot.LootDataId;
 import net.minecraft.world.level.storage.loot.LootDataManager;
 import net.minecraft.world.level.storage.loot.LootDataType;
+import net.minecraft.world.level.storage.loot.LootTable;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
@@ -14,7 +16,7 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 import java.util.Map;
 
 @Mixin(LootDataManager.class)
-public class LootDataManagerMixin {
+public class LootDataManagerMixin implements LootDataManagerBridge {
 
     // @formatter:off
     @Shadow private Map<LootDataId<?>, ?> elements;
@@ -28,4 +30,9 @@ public class LootDataManagerMixin {
         this.elements.forEach((key, lootTable) -> lootTableToKeyBuilder.put(lootTable, key.location()));
         this.lootTableToKey = lootTableToKeyBuilder.buildKeepingLast();
     }
+
+    @Override
+    public boolean bridge$isRegistered(LootTable lootTable) {
+        return this.lootTableToKey.containsKey(lootTable);
+    }
 }

arclight-common/src/main/java/io/izzel/arclight/common/mixin/core/world/level/storage/loot/LootTableMixin.java

@@ -1,6 +1,8 @@
 package io.izzel.arclight.common.mixin.core.world.level.storage.loot;
 
+import io.izzel.arclight.common.bridge.core.world.storage.loot.LootDataManagerBridge;
 import io.izzel.arclight.common.bridge.core.world.storage.loot.LootTableBridge;
+import io.izzel.arclight.common.mod.server.ArclightServer;
 import io.izzel.arclight.mixin.Eject;
 import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 import net.minecraft.resources.ResourceLocation;
@@ -41,6 +43,9 @@ public abstract class LootTableMixin implements LootTableBridge {
         if (!context.hasParam(LootContextParams.ORIGIN) && !context.hasParam(LootContextParams.THIS_ENTITY)) {
             return list;
         }
+        if (!((LootDataManagerBridge) ArclightServer.getMinecraftServer().getLootData()).bridge$isRegistered((LootTable) (Object) this)) {
+            return list;
+        }
         LootGenerateEvent event = CraftEventFactory.callLootGenerateEvent(inv, (LootTable) (Object) this, context, list, false);
         if (event.isCancelled()) {
             ci.cancel();
@@ -54,11 +59,14 @@ public abstract class LootTableMixin implements LootTableBridge {
         LootContext context = (new LootContext.Builder(lootparams)).withOptionalRandomSeed(i).create(this.randomSequence);
         ObjectArrayList<ItemStack> objectarraylist = this.getRandomItems(context);
         RandomSource randomsource = context.getRandom();
+
+        if (((LootDataManagerBridge) ArclightServer.getMinecraftServer().getLootData()).bridge$isRegistered((LootTable) (Object) this)) {
             LootGenerateEvent event = CraftEventFactory.callLootGenerateEvent(inv, (LootTable) (Object) this, context, objectarraylist, plugin);
             if (event.isCancelled()) {
                 return;
             }
             objectarraylist = event.getLoot().stream().map(CraftItemStack::asNMSCopy).collect(ObjectArrayList.toList());
+        }
 
         List<Integer> list = this.getAvailableSlots(inv, randomsource);
         this.shuffleAndSplitItems(objectarraylist, list.size(), randomsource);

buildSrc/src/main/groovy/io/izzel/arclight/gradle/tasks/UploadFilesTask.groovy

@@ -69,10 +69,14 @@ abstract class UploadFilesTask extends DefaultTask {
             }
         }
         link("/arclight/branches/${branch.get()}/versions-snapshot/${version.get()}/${modloader}", [type: 'object', value: sha1])
+        link("/arclight/branches/${branch.get()}/loaders/${modloader}/versions-snapshot/${version.get()}", [type: 'object', value: sha1])
         link("/arclight/branches/${branch.get()}/latest-snapshot", [type: 'link', value: "/arclight/branches/${branch.get()}/versions-snapshot/${version.get()}", cache_seconds: 3600])
+        link("/arclight/branches/${branch.get()}/loaders/${modloader}/latest-snapshot", [type: 'link', value: "/arclight/branches/${branch.get()}/loaders/${modloader}/versions-snapshot/${version.get()}", cache_seconds: 3600])
         if (!snapshot.get()) {
             link("/arclight/branches/${branch.get()}/versions-stable/${version.get()}/${modloader}", [type: 'object', value: sha1])
+            link("/arclight/branches/${branch.get()}/loaders/${modloader}/versions-stable/${version.get()}", [type: 'object', value: sha1])
             link("/arclight/branches/${branch.get()}/latest-stable", [type: 'link', value: "/arclight/branches/${branch.get()}/versions-stable/${version.get()}", cache_seconds: 86400])
+            link("/arclight/branches/${branch.get()}/loaders/${modloader}/latest-stable", [type: 'link', value: "/arclight/branches/${branch.get()}/loaders/${modloader}/versions-stable/${version.get()}", cache_seconds: 86400])
         }
     }