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 0e6054d0..bac7b483 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/AbstractPerlinNoise.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/util/random/AbstractPerlinNoise.kt
@@ -37,15 +37,15 @@ abstract class AbstractPerlinNoise(val parameters: PerlinNoiseParameters) {
 	protected data class Setup(val b0: Int, val b1: Int, val r0: Double, val r1: Double)
 
 	protected val p by lazy(LazyThreadSafetyMode.NONE) { IntArray(SCALE * 2 + 2) }
-	protected val g1 by lazy(LazyThreadSafetyMode.NONE) { DoubleArray(SCALE * 2 + 2) }
+	protected val g1 by lazy(LazyThreadSafetyMode.NONE) { FloatArray(SCALE * 2 + 2) }
 
 	// flat arrays for performance
-	protected val g2_0 by lazy(LazyThreadSafetyMode.NONE) { DoubleArray(SCALE * 2 + 2) }
-	protected val g2_1 by lazy(LazyThreadSafetyMode.NONE) { DoubleArray(SCALE * 2 + 2) }
+	protected val g2_0 by lazy(LazyThreadSafetyMode.NONE) { FloatArray(SCALE * 2 + 2) }
+	protected val g2_1 by lazy(LazyThreadSafetyMode.NONE) { FloatArray(SCALE * 2 + 2) }
 
-	protected val g3_0 by lazy(LazyThreadSafetyMode.NONE) { DoubleArray(SCALE * 2 + 2) }
-	protected val g3_1 by lazy(LazyThreadSafetyMode.NONE) { DoubleArray(SCALE * 2 + 2) }
-	protected val g3_2 by lazy(LazyThreadSafetyMode.NONE) { DoubleArray(SCALE * 2 + 2) }
+	protected val g3_0 by lazy(LazyThreadSafetyMode.NONE) { FloatArray(SCALE * 2 + 2) }
+	protected val g3_1 by lazy(LazyThreadSafetyMode.NONE) { FloatArray(SCALE * 2 + 2) }
+	protected val g3_2 by lazy(LazyThreadSafetyMode.NONE) { FloatArray(SCALE * 2 + 2) }
 
 	private var init = false
 	private val initLock = Any()
@@ -90,42 +90,42 @@ abstract class AbstractPerlinNoise(val parameters: PerlinNoiseParameters) {
 		val g3_2 = g3_2
 
 		p.fill(0)
-		g1.fill(0.0)
-		g2_0.fill(0.0)
-		g2_1.fill(0.0)
-		g3_0.fill(0.0)
-		g3_1.fill(0.0)
-		g3_2.fill(0.0)
+		g1.fill(0f)
+		g2_0.fill(0f)
+		g2_1.fill(0f)
+		g3_0.fill(0f)
+		g3_1.fill(0f)
+		g3_2.fill(0f)
 
 		val random = random(seed)
 
 		for (i in 0 until SCALE) {
 			p[i] = i
 
-			g1[i] = random.nextInt(-SCALE, SCALE) / SCALE.toDouble()
+			g1[i] = random.nextInt(-SCALE, SCALE) / SCALE.toFloat()
 
-			g2_0[i] = random.nextInt(-SCALE, SCALE) / SCALE.toDouble()
-			g2_1[i] = random.nextInt(-SCALE, SCALE) / SCALE.toDouble()
+			g2_0[i] = random.nextInt(-SCALE, SCALE) / SCALE.toFloat()
+			g2_1[i] = random.nextInt(-SCALE, SCALE) / SCALE.toFloat()
 
-			g3_0[i] = random.nextInt(-SCALE, SCALE) / SCALE.toDouble()
-			g3_1[i] = random.nextInt(-SCALE, SCALE) / SCALE.toDouble()
-			g3_2[i] = random.nextInt(-SCALE, SCALE) / SCALE.toDouble()
+			g3_0[i] = random.nextInt(-SCALE, SCALE) / SCALE.toFloat()
+			g3_1[i] = random.nextInt(-SCALE, SCALE) / SCALE.toFloat()
+			g3_2[i] = random.nextInt(-SCALE, SCALE) / SCALE.toFloat()
 
 			val l2 = sqrt(g2_0[i] * g2_0[i] + g2_1[i] * g2_1[i])
 			val l3 = sqrt(g3_0[i] * g3_0[i] + g3_1[i] * g3_1[i] + g3_2[i] * g3_2[i])
 
-			if (l2 == 0.0) {
-				g2_0[i] = 1.0
-				g2_1[i] = 0.0
+			if (l2 == 0f) {
+				g2_0[i] = 1f
+				g2_1[i] = 0f
 			} else {
 				g2_0[i] = g2_0[i] / l2
 				g2_1[i] = g2_1[i] / l2
 			}
 
-			if (l3 == 0.0) {
-				g3_0[i] = 1.0
-				g3_1[i] = 0.0
-				g3_2[i] = 0.0
+			if (l3 == 0f) {
+				g3_0[i] = 1f
+				g3_1[i] = 0f
+				g3_2[i] = 0f
 			} else {
 				g3_0[i] = g3_0[i] / l3
 				g3_1[i] = g3_1[i] / l3
@@ -171,12 +171,12 @@ abstract class AbstractPerlinNoise(val parameters: PerlinNoiseParameters) {
 	}
 
 	@Suppress("NOTHING_TO_INLINE")
-	protected inline fun at2(x: Double, y: Double, rx: Double, ry: Double): Double {
+	protected inline fun at2(x: Float, y: Float, rx: Double, ry: Double): Double {
 		return rx * x + ry * y
 	}
 
 	@Suppress("NOTHING_TO_INLINE")
-	protected inline fun at3(x: Double, y: Double, z: Double, rx: Double, ry: Double, rz: Double): Double {
+	protected inline fun at3(x: Float, y: Float, z: Float, rx: Double, ry: Double, rz: Double): Double {
 		return rx * x + ry * y + rz * z
 	}