Add back forgotten loot table datagen

Closes #115

src/data/java/gripe/_90/megacells/datagen/MEGADataGenerators.java

@@ -24,5 +24,6 @@ public static void onGatherData(GatherDataEvent event) {
 
         generator.addProvider(event.includeClient(), new MEGALanguageProvider(output));
         generator.addProvider(event.includeServer(), new MEGARecipeProvider(output));
+        generator.addProvider(event.includeServer(), new MEGALootProvider(output));
     }
 }

src/data/java/gripe/_90/megacells/datagen/MEGALootProvider.java

@@ -0,0 +1,50 @@
+package gripe._90.megacells.datagen;
+
+import gripe._90.megacells.definition.MEGABlocks;
+import net.minecraft.data.PackOutput;
+import net.minecraft.data.loot.BlockLootSubProvider;
+import net.minecraft.data.loot.LootTableProvider;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.flag.FeatureFlags;
+import net.minecraft.world.level.storage.loot.LootPool;
+import net.minecraft.world.level.storage.loot.LootTable;
+import net.minecraft.world.level.storage.loot.entries.LootItem;
+import net.minecraft.world.level.storage.loot.parameters.LootContextParamSets;
+import net.minecraft.world.level.storage.loot.predicates.ExplosionCondition;
+import net.minecraft.world.level.storage.loot.providers.number.ConstantValue;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+import java.util.Set;
+import java.util.function.BiConsumer;
+
+public class MEGALootProvider extends LootTableProvider {
+    public MEGALootProvider(PackOutput output) {
+        super(output, Set.of(), List.of(new SubProviderEntry(BlockLoot::new, LootContextParamSets.BLOCK)));
+    }
+
+    private static class BlockLoot extends BlockLootSubProvider {
+        protected BlockLoot() {
+            super(Set.of(), FeatureFlags.DEFAULT_FLAGS);
+        }
+
+        @Override
+        public void generate(@NotNull BiConsumer<ResourceLocation, LootTable.Builder> writer) {
+            generate();
+            map.forEach(writer);
+        }
+
+        @Override
+        public void generate() {
+            for (var block : MEGABlocks.getBlocks()) {
+                add(
+                        block.block(),
+                        LootTable.lootTable()
+                                .withPool(LootPool.lootPool()
+                                        .setRolls(ConstantValue.exactly(1))
+                                        .add(LootItem.lootTableItem(block))
+                                        .when(ExplosionCondition.survivesExplosion())));
+            }
+        }
+    }
+}