modify vanilla loot tables

Author: Kaupenjoe

src/main/java/net/kaupenjoe/tutorialmod/TutorialMod.java

@@ -20,6 +20,7 @@
 import net.kaupenjoe.tutorialmod.potion.ModPotions;
 import net.kaupenjoe.tutorialmod.sound.ModSounds;
 import net.kaupenjoe.tutorialmod.util.HammerUsageEvent;
+import net.kaupenjoe.tutorialmod.util.ModLootTableModifiers;
 import net.kaupenjoe.tutorialmod.villager.ModVillagers;
 import net.kaupenjoe.tutorialmod.world.gen.ModWorldGeneration;
 import net.minecraft.entity.effect.StatusEffectInstance;
@@ -61,6 +62,7 @@ public void onInitialize() {
 		ModVillagers.registerVillagers();
 
 		ModParticles.registerParticles();
+		ModLootTableModifiers.modifyLootTables();
 
 		FuelRegistry.INSTANCE.add(ModItems.STARLIGHT_ASHES, 600);
 

src/main/java/net/kaupenjoe/tutorialmod/util/ModLootTableModifiers.java

@@ -0,0 +1,53 @@
+package net.kaupenjoe.tutorialmod.util;
+
+import net.fabricmc.fabric.api.loot.v3.LootTableEvents;
+import net.kaupenjoe.tutorialmod.item.ModItems;
+import net.minecraft.loot.LootPool;
+import net.minecraft.loot.LootTables;
+import net.minecraft.loot.condition.RandomChanceLootCondition;
+import net.minecraft.loot.entry.ItemEntry;
+import net.minecraft.loot.function.SetCountLootFunction;
+import net.minecraft.loot.provider.number.ConstantLootNumberProvider;
+import net.minecraft.loot.provider.number.UniformLootNumberProvider;
+import net.minecraft.util.Identifier;
+
+public class ModLootTableModifiers {
+    private static final Identifier GRASS_BLOCK_ID
+            = Identifier.of("minecraft", "blocks/short_grass");
+    private static final Identifier CREEPER_ID
+            = Identifier.of("minecraft", "entities/creeper");
+
+    public static void modifyLootTables() {
+        LootTableEvents.MODIFY.register((key, tableBuilder, source, registry) -> {
+            if(GRASS_BLOCK_ID.equals(key.getValue())) {
+                LootPool.Builder poolBuilder = LootPool.builder()
+                        .rolls(ConstantLootNumberProvider.create(1))
+                        .conditionally(RandomChanceLootCondition.builder(0.25f)) // Drops 25% of the time
+                        .with(ItemEntry.builder(ModItems.CAULIFLOWER_SEEDS))
+                        .apply(SetCountLootFunction.builder(UniformLootNumberProvider.create(1.0f, 2.0f)).build());
+
+                tableBuilder.pool(poolBuilder.build());
+            }
+
+            if(LootTables.IGLOO_CHEST_CHEST.equals(key)) {
+                LootPool.Builder poolBuilder = LootPool.builder()
+                        .rolls(ConstantLootNumberProvider.create(1))
+                        .conditionally(RandomChanceLootCondition.builder(1.0f)) // Drops 100% of the time
+                        .with(ItemEntry.builder(ModItems.CHISEL))
+                        .apply(SetCountLootFunction.builder(UniformLootNumberProvider.create(1.0f, 2.0f)).build());
+
+                tableBuilder.pool(poolBuilder.build());
+            }
+
+            if(CREEPER_ID.equals(key.getValue())) {
+                LootPool.Builder poolBuilder = LootPool.builder()
+                        .rolls(ConstantLootNumberProvider.create(1))
+                        .conditionally(RandomChanceLootCondition.builder(0.75f)) // Drops 75% of the time
+                        .with(ItemEntry.builder(ModItems.CAULIFLOWER))
+                        .apply(SetCountLootFunction.builder(UniformLootNumberProvider.create(1.0f, 2.0f)).build());
+
+                tableBuilder.pool(poolBuilder.build());
+            }
+        });
+    }
+}