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Blocks data-driven similar to Item Data in 1.21.4

In 1.21.4 items changed their format of being set up to load in-game with (e.g.) custom model data.
It would be absolutely insane to have something similar for blocks to redo the blockstates data.

Block Data Folder
The folder would be /assets/minecraft/blocks/ (similar to the items folder being /assets/minecraft/items/).

Block Data
I would imagine some JSON for a new tag called "block_data" like the following:

{
    "model": {
        "type": "range_dispatch",
        "property": "block_data",
        "entries": [
            {"threshold": "test_block", "model": { "type": "model", "model": "custom:blocks/test_slab"}, "hitbox": { "type": "minecraft:slab", "half": "top"}},
            {"threshold": "test_stairs", "model": { "type": "model", "model": "custom:blocks/test_stairs"}, "hitbox": { "type": "minecraft:stairs", "facing": "east"}},
            {"threshold": "test_fence", "model": { "type": "model", "model": "custom:blocks/test_fence"}, "hitbox": { "type": "minecraft:fence", "south": "true", "east": "false"}}
        ],
        "fallback": {
            "type": "model",
            "model": "minecraft:block/stone"
        }
    }
}

The "threshold" would be similar to the "custom_model_data" for items, being able to enter floats, flags or strings. The "Hitbox" tag would define a selected hitbox for this certain blockdata, you can then specify the rotation or such for the hitbox using the actual blockdata tags. For example the "facing" tag for stairs to determine a specific hitbox rotation.

Registered User shared this idea

• February 25, 2025 21:07
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  • February 26, 2025 19:38
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  Blocks being defined with data would be a dream come true. Also, items and entities but you get it. Imagine Minecraft itself being a datapack loaded by default? It'd open so many possibilities. Datapacks should really become the modding API for Java. Imagine all the servers filled with custom blocks and mechanics... Origin Realms could finally get complete blocksets!