Simple random selector feature

Similar to the random selector feature, the simple_random_selector feature can be used to randomly choose from a provided list of features to place. The only difference being the absence of the default and probability options since all features have an equal chance of being picked.

Configuration

The simple_random_selector feature only has the features option:

Option	Type	Description
features	Either a single placed feature object or a list of them (Ids are supported in Json).	The list of features to choose from.

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

Example

As mentioned on the Pointed Dripstone page, the simple_random_selector feature is used to randomly choose between a stalactite and a stalagmite. Si here's the full configured- and placed feature.

KotlinJson

ConfiguredFeatures.kt

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

    val POINTED_DRIPSTONE = registerConfiguredFeature(
        "pointed_dripstone",
        Feature.SIMPLE_RANDOM_SELECTOR,
        SimpleRandomFeatureConfiguration(HolderSet.direct(
            PlacementUtils.inlinePlaced(
                Feature.POINTED_DRIPSTONE,
                PointedDripstoneConfiguration(0.2f, 0.7f, 0.5f, 0.5f),
                EnvironmentScanPlacement.scanningFor(Direction.DOWN, BlockPredicate.solid(), BlockPredicate.ONLY_IN_AIR_OR_WATER_PREDICATE, 12),
                RandomOffsetPlacement.vertical(ConstantInt.of(1))
            ),
            PlacementUtils.inlinePlaced(
                Feature.POINTED_DRIPSTONE,
                PointedDripstoneConfiguration(0.2f, 0.7f, 0.5f, 0.5f),
                EnvironmentScanPlacement.scanningFor(Direction.UP, BlockPredicate.solid(), BlockPredicate.ONLY_IN_AIR_OR_WATER_PREDICATE, 12),
                RandomOffsetPlacement.vertical(ConstantInt.of(-1)))
        ))
    )

}

PlacedFeatures.kt

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

    val POINTED_DRIPSTONE = placedFeature("pointed_dripstone", ConfiguredFeatures.POINTED_DRIPSTONE)
        .count(UniformInt.of(192, 256))
        .inSquareSpread()
        .inYWorldBounds()
        .count(UniformInt.of(1, 5))
        .randomOffset(ClampedNormalInt.of(0.0f, 3.0f, -10, 10), ClampedNormalInt.of(0.0f, 0.6f, -2, 2))
        .biomeFilter()
        .register()

}

configured_feature/pointed_dripstone.json

{
  "type": "minecraft:simple_random_selector",
  "config": {
    "features": [
      {
        "feature": {
          "type": "minecraft:pointed_dripstone",
          "config": {
            "chance_of_directional_spread": 0.7,
            "chance_of_spread_radius2": 0.5,
            "chance_of_spread_radius3": 0.5,
            "chance_of_taller_dripstone": 0.2
          }
        },
        "placement": [
          {
            "type": "minecraft:environment_scan",
            "allowed_search_condition": {
              "type": "minecraft:matching_blocks",
              "blocks": [
                "minecraft:air",
                "minecraft:water"
              ]
            },
            "direction_of_search": "down",
            "max_steps": 12,
            "target_condition": {
              "type": "minecraft:solid"
            }
          },
          {
            "type": "minecraft:random_offset",
            "xz_spread": 0,
            "y_spread": 1
          }
        ]
      },
      {
        "feature": {
          "type": "minecraft:pointed_dripstone",
          "config": {
            "chance_of_directional_spread": 0.7,
            "chance_of_spread_radius2": 0.5,
            "chance_of_spread_radius3": 0.5,
            "chance_of_taller_dripstone": 0.2
          }
        },
        "placement": [
          {
            "type": "minecraft:environment_scan",
            "allowed_search_condition": {
              "type": "minecraft:matching_blocks",
              "blocks": [
                "minecraft:air",
                "minecraft:water"
              ]
            },
            "direction_of_search": "up",
            "max_steps": 12,
            "target_condition": {
              "type": "minecraft:solid"
            }
          },
          {
            "type": "minecraft:random_offset",
            "xz_spread": 0,
            "y_spread": -1
          }
        ]
      }
    ]
  }
}

placed_feature/pointed_dripstone.json

{
  "feature": "minecraft:pointed_dripstone",
  "placement": [
    {
      "type": "minecraft:count",
      "count": {
        "type": "minecraft:uniform",
        "value": {
          "max_inclusive": 256,
          "min_inclusive": 192
        }
      }
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "type": "minecraft:height_range",
      "height": {
        "type": "minecraft:uniform",
        "max_inclusive": {
          "absolute": 256
        },
        "min_inclusive": {
          "above_bottom": 0
        }
      }
    },
    {
      "type": "minecraft:count",
      "count": {
        "type": "minecraft:uniform",
        "value": {
          "max_inclusive": 5,
          "min_inclusive": 1
        }
      }
    },
    {
      "type": "minecraft:random_offset",
      "xz_spread": {
        "type": "minecraft:clamped_normal",
        "value": {
          "deviation": 3.0,
          "max_inclusive": 10,
          "mean": 0.0,
          "min_inclusive": -10
        }
      },
      "y_spread": {
        "type": "minecraft:clamped_normal",
        "value": {
          "deviation": 0.6,
          "max_inclusive": 2,
          "mean": 0.0,
          "min_inclusive": -2
        }
      }
    },
    {
      "type": "minecraft:biome"
    }
  ]
}