FIX: Assign interior cell flags based on the actual prop value and no…

…t just whether it exists in the set

src/game_object.rs

@@ -129,17 +129,18 @@ pub fn book(entity_props: &HashMap<&String, &String>, ref_id: &str, mesh_name: &
 pub fn cell(entity_props: &HashMap<&String, &String>, ref_id: &str) -> Cell {
     let mut flags = CellFlags::default() | CellFlags::IS_INTERIOR;
 
-    if let Ok(_) = get_prop("FakeExterior", entity_props).parse::<u32>() {
-        flags |= CellFlags::BEHAVES_LIKE_EXTERIOR;
-    }
-
-    if let Ok(_) = get_prop("HasWater", entity_props).parse::<u32>() {
-        flags |= CellFlags::HAS_WATER;
-    };
-
-    if let Ok(_) = get_prop("RestIsIllegal", entity_props).parse::<u32>() {
-        flags |= CellFlags::RESTING_IS_ILLEGAL;
-    };
+    flags |= [
+        ("FakeExterior", CellFlags::BEHAVES_LIKE_EXTERIOR),
+        ("RestIsIllegal", CellFlags::RESTING_IS_ILLEGAL),
+        ("HasWater", CellFlags::HAS_WATER),
+    ]
+    .iter()
+    .fold(CellFlags::empty(), |acc, &(prop, flag)| {
+        acc | match get_prop(prop, entity_props).parse::<u32>() {
+            Ok(1) => flag,
+            _ => CellFlags::empty(),
+        }
+    });
 
     Cell {
         flags: ObjectFlags::default(),