diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/AbstractPerlinNoise.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/AbstractPerlinNoise.kt
index 8822dce9..9921e43f 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/AbstractPerlinNoise.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/AbstractPerlinNoise.kt
@@ -36,16 +36,16 @@ abstract class AbstractPerlinNoise(val parameters: PerlinNoiseParameters) {
 
 	protected data class Setup(val b0: Int, val b1: Int, val r0: Double, val r1: Double)
 
-	@JvmField protected val p = IntArray(parameters.scale * 2 + 2)
-	@JvmField protected val g1 = DoubleArray(parameters.scale * 2 + 2)
+	protected val p by lazy(LazyThreadSafetyMode.NONE) { IntArray(parameters.scale * 2 + 2) }
+	protected val g1 by lazy(LazyThreadSafetyMode.NONE) { DoubleArray(parameters.scale * 2 + 2) }
 
 	// flat arrays for performance
-	@JvmField protected val g2_0 = DoubleArray(parameters.scale * 2 + 2)
-	@JvmField protected val g2_1 = DoubleArray(parameters.scale * 2 + 2)
+	protected val g2_0 by lazy(LazyThreadSafetyMode.NONE) { DoubleArray(parameters.scale * 2 + 2) }
+	protected val g2_1 by lazy(LazyThreadSafetyMode.NONE) { DoubleArray(parameters.scale * 2 + 2) }
 
-	@JvmField protected val g3_0 = DoubleArray(parameters.scale * 2 + 2)
-	@JvmField protected val g3_1 = DoubleArray(parameters.scale * 2 + 2)
-	@JvmField protected val g3_2 = DoubleArray(parameters.scale * 2 + 2)
+	protected val g3_0 by lazy(LazyThreadSafetyMode.NONE) { DoubleArray(parameters.scale * 2 + 2) }
+	protected val g3_1 by lazy(LazyThreadSafetyMode.NONE) { DoubleArray(parameters.scale * 2 + 2) }
+	protected val g3_2 by lazy(LazyThreadSafetyMode.NONE) { DoubleArray(parameters.scale * 2 + 2) }
 
 	init {
 		if (parameters.seed != null && parameters.type != PerlinNoiseParameters.Type.UNITIALIZED) {
@@ -53,13 +53,34 @@ abstract class AbstractPerlinNoise(val parameters: PerlinNoiseParameters) {
 		}
 	}
 
-	fun init(seed: Long, now: Boolean = false) {
+	private var init = false
+	private val initLock = Any()
+
+	protected fun checkInit() {
+		check(hasSeedSpecified) { "No noise seed specified" }
+
+		if (!init) {
+			synchronized(initLock) {
+				if (!init) {
+					init0(seed)
+					init = true
+				}
+			}
+		}
+	}
+
+	fun init(seed: Long) {
 		if (parameters.type == PerlinNoiseParameters.Type.UNITIALIZED)
 			return
 
-		this.hasSeedSpecified = true
-		this.seed = seed
+		synchronized(initLock) {
+			this.init = false
+			this.hasSeedSpecified = true
+			this.seed = seed
+		}
+	}
 
+	private fun init0(seed: Long) {
 		val p = p
 		val g1 = g1
 		val g2_0 = g2_0
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/BillowNoise.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/BillowNoise.kt
index 28425226..a683f470 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/BillowNoise.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/BillowNoise.kt
@@ -9,6 +9,7 @@ class BillowNoise(parameters: PerlinNoiseParameters) : AbstractPerlinNoise(param
 	}
 
 	override fun get(x: Double): Double {
+		checkInit()
 		var sum = 0.0
 		var p = x * parameters.frequency
 		var scale = 1.0
@@ -23,6 +24,7 @@ class BillowNoise(parameters: PerlinNoiseParameters) : AbstractPerlinNoise(param
 	}
 
 	override fun get(x: Double, y: Double): Double {
+		checkInit()
 		var sum = 0.0
 		var px = x * parameters.frequency
 		var py = y * parameters.frequency
@@ -39,6 +41,7 @@ class BillowNoise(parameters: PerlinNoiseParameters) : AbstractPerlinNoise(param
 	}
 
 	override fun get(x: Double, y: Double, z: Double): Double {
+		checkInit()
 		var sum = 0.0
 		var px = x * parameters.frequency
 		var py = y * parameters.frequency
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/PerlinNoise.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/PerlinNoise.kt
index 7a028e7f..2129b666 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/PerlinNoise.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/PerlinNoise.kt
@@ -8,6 +8,7 @@ class PerlinNoise(parameters: PerlinNoiseParameters) : AbstractPerlinNoise(param
 	}
 
 	override fun get(x: Double): Double {
+		checkInit()
 		var sum = 0.0
 		var p = x * parameters.frequency
 		var scale = 1.0
@@ -22,6 +23,7 @@ class PerlinNoise(parameters: PerlinNoiseParameters) : AbstractPerlinNoise(param
 	}
 
 	override fun get(x: Double, y: Double): Double {
+		checkInit()
 		var sum = 0.0
 		var px = x * parameters.frequency
 		var py = y * parameters.frequency
@@ -38,6 +40,7 @@ class PerlinNoise(parameters: PerlinNoiseParameters) : AbstractPerlinNoise(param
 	}
 
 	override fun get(x: Double, y: Double, z: Double): Double {
+		checkInit()
 		var sum = 0.0
 		var px = x * parameters.frequency
 		var py = y * parameters.frequency
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/RidgedNoise.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/RidgedNoise.kt
index 5bb3d33d..eb8c5517 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/RidgedNoise.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/RidgedNoise.kt
@@ -9,6 +9,7 @@ class RidgedNoise(parameters: PerlinNoiseParameters) : AbstractPerlinNoise(param
 	}
 
 	override fun get(x: Double): Double {
+		checkInit()
 		var sum = 0.0
 		var p = x * parameters.frequency
 		var scale = 1.0
@@ -31,6 +32,7 @@ class RidgedNoise(parameters: PerlinNoiseParameters) : AbstractPerlinNoise(param
 	}
 
 	override fun get(x: Double, y: Double): Double {
+		checkInit()
 		var sum = 0.0
 		var px = x * parameters.frequency
 		var py = y * parameters.frequency
@@ -55,6 +57,7 @@ class RidgedNoise(parameters: PerlinNoiseParameters) : AbstractPerlinNoise(param
 	}
 
 	override fun get(x: Double, y: Double, z: Double): Double {
+		checkInit()
 		var sum = 0.0
 		var px = x * parameters.frequency
 		var py = y * parameters.frequency