Fixed Bartering LootTable

src/main/java/org/betterx/bclib/mixin/common/LootPoolMixin.java

@@ -0,0 +1,56 @@
+package org.betterx.bclib.mixin.common;
+
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.storage.loot.LootContext;
+import net.minecraft.world.level.storage.loot.LootPool;
+import net.minecraft.world.level.storage.loot.entries.LootPoolEntryContainer;
+import net.minecraft.world.level.storage.loot.functions.LootItemFunction;
+import net.minecraft.world.level.storage.loot.predicates.LootItemCondition;
+import net.minecraft.world.level.storage.loot.providers.number.NumberProvider;
+
+import com.google.common.collect.Lists;
+import org.betterx.bclib.interfaces.LootPoolAccessor;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+
+import java.util.List;
+import java.util.function.BiFunction;
+import java.util.function.Predicate;
+
+@Mixin(LootPool.class)
+public class LootPoolMixin implements LootPoolAccessor {
+    @Shadow
+    @Final
+    public LootPoolEntryContainer[] entries;
+    @Shadow
+    @Final
+    public LootItemCondition[] conditions;
+    @Shadow
+    @Final
+    private Predicate<LootContext> compositeCondition;
+    @Shadow
+    @Final
+    public LootItemFunction[] functions;
+    @Shadow
+    @Final
+    private BiFunction<ItemStack, LootContext, ItemStack> compositeFunction;
+    @Shadow
+    @Final
+    public NumberProvider rolls;
+    @Shadow
+    @Final
+    public NumberProvider bonusRolls;
+
+    @Override
+    public LootPool bcl_mergeEntries(List<LootPoolEntryContainer> newEntries) {
+        final List<LootPoolEntryContainer> merged = Lists.newArrayList(entries);
+        merged.addAll(newEntries);
+
+        return new LootPool(merged.toArray(new LootPoolEntryContainer[0]),
+                this.conditions,
+                this.functions,
+                this.rolls,
+                this.bonusRolls);
+    }
+}