Compost Mod Wiki

The Compost Mod (Expanded Composting Rewards) is a comprehensive overhaul of the composting mechanic in Minecraft. Developed by yurisuika, this mod transforms the vanilla composter from a simple bone meal generator into a versatile recycling machine. By utilizing a data-driven loot table system, the mod allows players to receive a wide variety of resources—ranging from common dirt to rare diamonds—based on what they compost and the environment around them.

Unlike the vanilla system, which has a fixed output, this mod introduces logic that considers the player's location, the current weather, and the specific items being recycled. It is designed to be highly compatible with other mods and fully customizable via data packs, making it a staple for survival, skyblock, and realism-focused modpacks.

The fundamental change introduced by the Compost mod is the transition from a hardcoded output to a Loot Table System. When a composter reaches its final stage (Level 7/8), the item it produces is determined by the compost:composter loot table.

Composting Process

1. Input: Players add compostable items (food, plants, seeds) to the composter as usual.
2. Leveling: Each successful addition has a chance to raise the compost level.
3. Output Generation: Once the composter is full, the mod checks the loot table and environmental predicates to determine the reward.
4. Collection: Right-clicking the full composter yields the generated item.

Key Features

• Dynamic Outputs: Instead of only Bone Meal, players can obtain Dirt, Seeds, or even rare minerals.
• Contextual Logic: The mod can check if it is raining, the current light level, or the player's dimension before deciding the output.
• Villager Integration: The default configuration ensures that Villager Farmers can still operate and receive Bone Meal, maintaining vanilla village mechanics.

One of the most advanced features of the Compost mod is its support for Origin-Based Conditions. This allows nature to play a direct role in the composting process. The mod can detect various world states to alter the rewards.

The mod introduces a Loot Condition that matches the specific compostables used. This means the "recipe" of what you put in can influence what you get out. This mechanic allows for intuitive recycling loops.

• Seed Recovery: Composting Apples has a chance to return Apple Seeds (if a seed mod is present) or standard Seeds.
• Material Recycling: Composting Saplings might yield specialized Mulch or Sticks.
• Organic Waste: Composting Rotten Flesh or Poisonous Potatoes can be configured to yield Dirt, making these items useful for terraforming in resource-scarce environments like Skyblock.

While the mod is designed for customization, it comes with a balanced default loot table that showcases its capabilities. Below are common rewards found in the base configuration:

The Compost mod is built to be a framework for pack creators. All composting rewards are handled through standard Minecraft JSON loot tables.

Customizing Rewards

To change the rewards, you must create a data pack and navigate to: data/compost/loot_tables/composter.json

Within this file, you can define multiple "pools" of items. You can use standard vanilla predicates (like location_check or weather_check) and the mod's custom match_compostable condition to create complex logic.

Example Logic:

• If is_raining is true, add brown_mushroom to the pool with a weight of 50.
• If composted_item is minecraft:apple, add minecraft:apple_seeds to the pool.

The Compost mod is highly compatible with the broader Minecraft ecosystem:

• Farmer's Delight: Works seamlessly with modded crops; modded compost items (like Organic Compost) can be added to the loot tables.
• Villagers: As mentioned, the mod includes a specific check to ensure Villager Farmers can still produce Bone Meal to grow their crops, preventing village economies from breaking.
• Modded Items: Any item from any mod can be added to the composting list or the reward list via tags and data packs.
• Automation: Compatible with Hoppers and Pipes. Hoppers can pull the generated rewards out of the bottom of the composter just like vanilla Bone Meal.