Seagrass feature

The seagrass feature allows you to generate seagrass in water.

Configuration

The seagrass feature only has the probability option (float in the range \([0.0;1.0)\)), which determines the chance of seagrass being generated.

In code, the ProbabilityFeatureConfiguration class is used to configure the feature.

Example

As an example, here's the configured- and placed feature of seagrass in the warm ocean biome.

KotlinJson

ConfiguredFeatures.kt

@OptIn(ExperimentalWorldGen::class)
@Init(stage = InitStage.POST_PACK_PRE_WORLD)
object ConfiguredFeatures : FeatureRegistry by ExampleAddon.registry {

    val SEAGRASS_TALL = registerConfiguredFeature(
        "seagrass_tall",
        Feature.SEAGRASS,
        ProbabilityFeatureConfiguration(0.3f)
    )

}

PlacedFeatures.kt

@OptIn(ExperimentalWorldGen::class)
@Init(stage = InitStage.POST_PACK_PRE_WORLD)
object PlacedFeatures : FeatureRegistry by ExampleAddon.registry {

    val SEAGRASS_TALL = placedFeature("seagrass_tall", ConfiguredFeatures.SEAGRASS_TALL)
        .inSquareSpread() // (1)!
        .moveToTopSolid() // (2)!
        .count(80) // (3)!
        .biomeFilter() // (4)!
        .register()

}

1. Randomly offset the placement horizontally.
2. Set y-coordinate to the ocean floor. This call is equivalent to

   HeightmapPlacement.onHeightmap(Heightmap.Types.OCEAN_FLOOR_WG)
   

3. Place 80 seagrass per chunk.
4. Only place in the warm ocean biome.

configured_feature/seagrass_tall.json

{
  "type": "minecraft:seagrass",
  "config": {
    "probability": 0.8
  }
}

placed_feature/seagrass_deep_warm.json

{
  "feature": "minecraft:seagrass_tall",
  "placement": [
    {
      "type": "minecraft:in_square" // (1)!
    },
    {
      "type": "minecraft:heightmap",
      "heightmap": "OCEAN_FLOOR_WG" // (2)!
    },
    {
      "type": "minecraft:count", // (3)!
      "count": 80
    },
    {
      "type": "minecraft:biome" // (4)!
    }
  ]
}

1. Randomly offset the placement horizontally.
2. Set y-coordinate to the ocean floor.
3. Place 80 seagrass per chunk.
4. Only place in the warm ocean biome.