calculate cloud speed from time

Now their speed is not frame rate specific anymore

src/main/java/de/bixilon/minosoft/gui/rendering/sky/clouds/CloudLayer.kt

@@ -126,7 +126,7 @@ class CloudLayer(
     }
 
     private fun getCloudSpeed(): Float {
-        return randomSpeed + 0.05f
+        return randomSpeed + 0.1f
     }
 
     private fun updateOffset() {
@@ -134,7 +134,7 @@ class CloudLayer(
             return
         }
         var offset = this.offset
-        offset += getCloudSpeed()
+        offset += getCloudSpeed() * clouds.delta * 10
         if (offset > MAX_OFFSET) {
             offset -= MAX_OFFSET
         }

src/main/java/de/bixilon/minosoft/gui/rendering/sky/clouds/CloudRenderer.kt

@@ -18,6 +18,7 @@ import de.bixilon.kotlinglm.vec3.Vec3
 import de.bixilon.kotlinglm.vec4.Vec4
 import de.bixilon.kutil.latch.CountUpAndDownLatch
 import de.bixilon.kutil.observer.DataObserver.Companion.observe
+import de.bixilon.kutil.time.TimeUtil.millis
 import de.bixilon.minosoft.data.registries.ResourceLocation
 import de.bixilon.minosoft.data.world.time.DayPhases
 import de.bixilon.minosoft.data.world.time.MoonPhases
@@ -59,6 +60,10 @@ class CloudRenderer(
         private set
     private var toUnload: MutableSet<CloudLayer> = mutableSetOf()
 
+    private var time = millis()
+    var delta = 0.0f
+        private set
+
     override val skipOpaque: Boolean
         get() = !sky.effects.clouds || !sky.profile.clouds.enabled || connection.profiles.block.viewDistance < 3 || layers.isEmpty()
 
@@ -113,6 +118,12 @@ class CloudRenderer(
         if (layers.size != nextLayers) {
             updateLayers(nextLayers)
         }
+
+        val time = millis()
+        val delta = time - this.time
+        this.delta = delta / 1000.0f
+        this.time = time
+
         for (layer in layers) {
             layer.prepareAsync()
         }