un-hardcode fog config

src/main/kotlin/Util.kt

@@ -1,6 +1,8 @@
 package gay.pizza.CavesOfJolk
 
 import com.badlogic.gdx.graphics.Color
+import com.badlogic.gdx.graphics.g3d.Attribute
+import com.badlogic.gdx.graphics.g3d.Attributes
 import com.badlogic.gdx.math.MathUtils
 import com.badlogic.gdx.math.Vector2
 import ktx.math.div
@@ -58,3 +60,7 @@ fun Color.mix(rhs: Color, x: Float) = Color(
 	MathUtils.lerp(this.g, rhs.g, x),
 	MathUtils.lerp(this.b, rhs.b, x),
 	MathUtils.lerp(this.a, rhs.a, x))
+
+//FIXME: find some way to get rid of these warnings
+@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "UNCHECKED_CAST")
+fun <T: Attribute> Attributes.get(type: Long) = get(type) as? T