diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/defs/world/WorldLayout.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/defs/world/WorldLayout.kt
index 035f2830..ccec4f6e 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/defs/world/WorldLayout.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/defs/world/WorldLayout.kt
@@ -17,7 +17,6 @@ import ru.dbotthepony.kommons.gson.set
 import ru.dbotthepony.kommons.gson.value
 import ru.dbotthepony.kommons.math.RGBAColor
 import ru.dbotthepony.kommons.util.AABBi
-import ru.dbotthepony.kommons.util.Either
 import ru.dbotthepony.kommons.vector.Vector2d
 import ru.dbotthepony.kommons.vector.Vector2i
 import ru.dbotthepony.kstarbound.Globals
@@ -26,12 +25,12 @@ import ru.dbotthepony.kstarbound.Registry
 import ru.dbotthepony.kstarbound.Starbound
 import ru.dbotthepony.kstarbound.defs.tile.BuiltinMetaMaterials
 import ru.dbotthepony.kstarbound.defs.tile.LiquidDefinition
-import ru.dbotthepony.kstarbound.world.terrain.AbstractTerrainSelector
 import ru.dbotthepony.kstarbound.json.builder.JsonFactory
 import ru.dbotthepony.kstarbound.util.ListInterner
 import ru.dbotthepony.kstarbound.util.random.AbstractPerlinNoise
 import ru.dbotthepony.kstarbound.util.random.nextRange
 import ru.dbotthepony.kstarbound.world.WorldGeometry
+import ru.dbotthepony.kstarbound.world.terrain.AbstractTerrainSelector
 import ru.dbotthepony.kstarbound.world.terrain.TerrainSelectorType
 import java.util.random.RandomGenerator
 import kotlin.math.roundToInt
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/world/terrain/AbstractTerrainSelector.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/world/terrain/AbstractTerrainSelector.kt
index 991efc14..8f19f26b 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/world/terrain/AbstractTerrainSelector.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/world/terrain/AbstractTerrainSelector.kt
@@ -20,6 +20,12 @@ abstract class AbstractTerrainSelector<D : Any>(val data: D, val parameters: Ter
 		return result
 	}
 
+	fun toJsonPlain(): JsonObject {
+		val result = Starbound.gson.toJsonTree(data) as JsonObject
+		result["type"] = type.jsonName
+		return result
+	}
+
 	override fun equals(other: Any?): Boolean {
 		if (this === other)
 			return true
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/world/terrain/ComparingTerrainSelector.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/world/terrain/ComparingTerrainSelector.kt
index 635a13fa..bef944e2 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/world/terrain/ComparingTerrainSelector.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/world/terrain/ComparingTerrainSelector.kt
@@ -21,6 +21,11 @@ sealed class ComparingTerrainSelector(data: Data, parameters: TerrainSelectorPar
 	}
 
 	class Max(data: Data, parameters: TerrainSelectorParameters) : ComparingTerrainSelector(data, parameters) {
+		constructor(parameters: TerrainSelectorParameters, vararg sources: AbstractTerrainSelector<*>) : this(
+			Data(ImmutableList.copyOf(sources.map { it.toJsonPlain() })),
+			parameters
+		)
+
 		override fun get(x: Int, y: Int): Double {
 			return sources.maxOf { it[x, y] }
 		}
@@ -30,6 +35,11 @@ sealed class ComparingTerrainSelector(data: Data, parameters: TerrainSelectorPar
 	}
 
 	class Min(data: Data, parameters: TerrainSelectorParameters) : ComparingTerrainSelector(data, parameters) {
+		constructor(parameters: TerrainSelectorParameters, vararg sources: AbstractTerrainSelector<*>) : this(
+			Data(ImmutableList.copyOf(sources.map { it.toJsonPlain() })),
+			parameters
+		)
+
 		override fun get(x: Int, y: Int): Double {
 			return sources.minOf { it[x, y] }
 		}
@@ -39,6 +49,11 @@ sealed class ComparingTerrainSelector(data: Data, parameters: TerrainSelectorPar
 	}
 
 	class MinMax(data: Data, parameters: TerrainSelectorParameters) : ComparingTerrainSelector(data, parameters) {
+		constructor(parameters: TerrainSelectorParameters, vararg sources: AbstractTerrainSelector<*>) : this(
+			Data(ImmutableList.copyOf(sources.map { it.toJsonPlain() })),
+			parameters
+		)
+
 		override fun get(x: Int, y: Int): Double {
 			var value = 0.0