Add Alternative Block Palettes
Using block palettes, it's possible to have random blocks or a happy player which can decide whether to choose palette 1 or 2 (or even more).
SNBT Structure​
{
DataVersion: 3955,
size: [2, 2, 2],
data: [
{pos: [0, 0, 0], state: "minecraft:dirt"},
{pos: [0, 0, 1], state: "minecraft:dirt"},
{pos: [1, 0, 0], state: "minecraft:dirt"},
{pos: [1, 0, 1], state: "minecraft:dirt"},
{pos: [0, 1, 0], state: "minecraft:grass_block{snowy:false}"},
{pos: [0, 1, 1], state: "minecraft:grass_block{snowy:false}"},
{pos: [1, 1, 0], state: "minecraft:grass_block{snowy:false}"},
{pos: [1, 1, 1], state: "minecraft:grass_block{snowy:false}"}
],
entities: [],
palette: [
"minecraft:dirt",
"minecraft:grass_block{snowy:false}"
]
}
This structure is a 2x2x2 cube with one layer dirt and one layer grass. To add more layers, you want to add this:
palettes: [
{
"minecraft:dirt": "minecraft:dirt",
"minecraft:grass_block{snowy:false}": "minecraft:grass_block{snowy:false}"
},
{
"minecraft:dirt": "minecraft:rooted_dirt",
"minecraft:grass_block{snowy:false}": "minecraft:mycelium{snowy:false}"
}
]
The palettes is an array of objects. In the first object, the key and the value are identical. The keys are always the
exact values from palette above. In the next object, you can start switching the values to have other blocks.
The complete file would look like this:
{
DataVersion: 3955,
size: [2, 2, 2],
data: [
{pos: [0, 0, 0], state: "minecraft:dirt"},
{pos: [0, 0, 1], state: "minecraft:dirt"},
{pos: [1, 0, 0], state: "minecraft:dirt"},
{pos: [1, 0, 1], state: "minecraft:dirt"},
{pos: [0, 1, 0], state: "minecraft:grass_block{snowy:false}"},
{pos: [0, 1, 1], state: "minecraft:grass_block{snowy:false}"},
{pos: [1, 1, 0], state: "minecraft:grass_block{snowy:false}"},
{pos: [1, 1, 1], state: "minecraft:grass_block{snowy:false}"}
],
entities: [],
palette: [
"minecraft:dirt",
"minecraft:grass_block{snowy:false}"
],
palettes: [
{
"minecraft:dirt": "minecraft:dirt",
"minecraft:grass_block{snowy:false}": "minecraft:grass_block{snowy:false}"
},
{
"minecraft:dirt": "minecraft:rooted_dirt",
"minecraft:grass_block{snowy:false}": "minecraft:mycelium{snowy:false}"
}
]
}
NBT Structure​
Since a NBT file cannot be viewed in a normal editor, it's hard to describe here. For that, I added two screenshots: One without the palette, and one with the palettes. So basically the exact structure with the exact configuration as in the SNBT section.
