Change key check lua command names to more consistent ones

Scripts/Gameflow.lua

@@ -1,5 +1,7 @@
 -- Place in this LUA script all the levels of your game
--- Title is mandatory and must be the first level
+-- Title is mandatory and must be the first level.
+
+-- Shorten some of the internal data types.
 
 local Flow = TEN.Flow
 local Level = Flow.Level
@@ -12,8 +14,14 @@ local ItemAction = Flow.ItemAction
 
 Flow.SetIntroImagePath("Screens\\Main.png")
 Flow.SetTitleScreenImagePath("Screens\\Title.jpg")
+
+-- Flow.SetFarView sets global far view distance in blocks.
+-- It will be overwritten by level.farView value, if it is specified.
+
 Flow.SetFarView(20)
 
+--------------------------------------------------
+
 -- Title level
 
 title = Level.new()
@@ -25,7 +33,10 @@ title.loadScreenFile = "Screens\\Main.png"
 
 Flow.AddLevel(title)
 
+--------------------------------------------------
+
 -- First test level
+
 test = Level.new()
 
 test.nameKey = "level_test"
@@ -33,13 +44,20 @@ test.scriptFile = "Scripts\\TestLevel.lua"
 test.ambientTrack = "108"
 test.levelFile = "Data\\TestLevel.ten"
 test.loadScreenFile = "Screens\\rome.jpg"
+
+-- 0 is no weather, 1 is rain, 2 is snow.
+-- Strength varies from 0 to 1 (floating-point value, e.g. 0.5 means half-strength).
+
 test.weather = 0
 test.weatherStrength = 1
+
 test.horizon = true
 test.farView = 20
 test.layer1 = Flow.SkyLayer.new(Color.new(255, 0, 0), 15)
 test.fog = Flow.Fog.new(Color.new(0, 0, 0), 12, 20)
 
+-- Presets for inventory item placement.
+
 test.objects = {
 	InventoryItem.new(
 		"tut1_ba_cartouche1",