Only suggert door properties on variables

lib/Properties.hs

@@ -261,16 +261,16 @@ checkObjectProperty obj p@(Property name _) = case name of
 
   "default" -> do
     isBool p
-    requireProperty "door"
+    suggestProperty "door"
   "persist" -> do
     isBool p
-    requireProperty "door"
+    suggestProperty "door"
   "openLayer" -> do
     isString p
-    requireProperty "door"
+    suggestProperty "door"
   "closeLayer" -> do
     isString p
-    requireProperty "door"
+    suggestProperty "door"
   "openSound" -> do
     isString p
 
@@ -278,10 +278,10 @@ checkObjectProperty obj p@(Property name _) = case name of
       (dependsOn . Link)
       (dependsOn . Local)
 
-    unless (containsProperty obj "soundRadius")
-     $ suggest "set \"soundRadius\" to a limit the door sound to a certain area\"."
+    unless (containsProperty obj "soundRadius") $
+      suggest "set \"soundRadius\" to a limit the door sound to a certain area\"."
 
-    requireProperty "door"
+    suggestProperty "door"
   "closeSound" -> do
     isString p
 
@@ -289,21 +289,21 @@ checkObjectProperty obj p@(Property name _) = case name of
       (dependsOn . Link)
       (dependsOn . Local)
 
-    requireProperty "door"
+    unless (containsProperty obj "soundRadius") $
+      -- Do not suggest again if already suggested for openSound
+      unless (containsProperty obj "openSound") $
+        suggest "set \"soundRadius\" to a limit the door sound to a certain area\"."
+
+    suggestProperty "door"
   "soundRadius" -> do
     isInt p
 
-    unless (containsProperty obj "soundRadius")
-     $ suggest "set \"soundRadius\" to a limit the door sound to a certain area\"."
-
-    requireProperty "door"
 
   _ -> warn $ "unknown object property " <> prettyprint name <> "."
   where
-    requireProperty req = do
+    suggestProperty req = do
       unless (containsProperty obj req) $
-        complain( "property " <> prettyprint req <> " is required by property " <> prettyprint name <> ".")
-
+        suggest( "property " <> prettyprint req <> " is suggested for property " <> prettyprint name <> ".")
 
 -- | Checks a single (custom) property of an objectgroup layer
 checkObjectGroupProperty :: Property -> LintWriter Layer