1 files changed, 15 insertions, 1 deletions
diff --git a/lib/Properties.hs b/lib/Properties.hs
index 5845a1b..c9c704a 100644
--- a/lib/Properties.hs
+++ b/lib/Properties.hs
@@ -128,13 +128,27 @@ checkTileset = do
     $ forbid "property \"tilesetCopyright\" for tilesets must be set."
 
   -- check individual tileset properties
-  mapM_ checkTilesetProperty (fromMaybe [] $ tilesetProperties tileset)
+  mapM_ checkTilesetProperty (fromMaybe mempty $ tilesetProperties tileset)
+
+  -- check individual tile definitions
+  mapM_ checkTile (fromMaybe mempty $ tilesetTiles tileset)
   where
     checkTilesetProperty :: Property -> LintWriter Tileset
     checkTilesetProperty p@(Property name _value) = case name of
       "copyright" -> naiveEscapeProperty p
       _           -> warn $ "unknown tileset property " <> prettyprint name
 
+    checkTile :: Tile -> LintWriter Tileset
+    checkTile tile = do
+      -- TODO:  refused doubled IDs?
+      mapM_ checkTileProperty (fromMaybe mempty $ tileProperties tile)
+      where checkTileProperty :: Property -> LintWriter Tileset
+            checkTileProperty p@(Property name _) = case name of
+              "collides" -> isBool p
+              _ -> warn $ "uknown tile property " <> prettyprint name
+                        <> " in tile with global id "
+                        <> showText (tileId tile)
+
 
 -- | collect lints on a single map layer
 checkLayer :: LintWriter Layer