diff --git a/src/reskit/level/system.rs b/src/reskit/level/system.rs
index 4721300..b3a3e30 100644
--- a/src/reskit/level/system.rs
+++ b/src/reskit/level/system.rs
@@ -449,9 +449,12 @@ pub fn get_code( tilemap: &TiledTilemap, level_name: &str, path_prefix: &str ) -
         total_tiles
     };
 
+    let mut constants: String = String::new();
+
     // Output IDs for each type defined in the map
     let mut component_ids: LinkedHashSet<String> = LinkedHashSet::new();
     let mut attribute_ids: LinkedHashMap<String, LinkedHashSet<String>> = LinkedHashMap::new();
+    let mut attribute_string_values: LinkedHashSet<String> = LinkedHashSet::new();
     for entity in &tilemap.ecs {
         let mut components: Vec<String> = entity.components.keys().map( | id | id.to_lowercase() ).collect();
         components.sort();
@@ -460,6 +463,18 @@ pub fn get_code( tilemap: &TiledTilemap, level_name: &str, path_prefix: &str ) -
         component_ids.extend( components );
 
         for ( component_name, component ) in &entity.components {
+            for ( _, attribute_value ) in &component.attributes {
+                match attribute_value.as_str() {
+                    "true" | "false" => { /* nothing */ },
+                    string => {
+                        let try_as_u16: Result<u16, ParseIntError> = string.parse();
+                        if let Err( _ ) = try_as_u16 {
+                            attribute_string_values.insert_if_absent( attribute_value.to_owned() );
+                        }
+                    }
+                }
+            }
+
             let mut attributes: Vec<String> = component.attributes.keys().map( | id | id.to_lowercase() ).collect();
             attributes.sort();
             let attribues: LinkedHashSet<String> = attributes.into_iter().collect();
@@ -468,8 +483,21 @@ pub fn get_code( tilemap: &TiledTilemap, level_name: &str, path_prefix: &str ) -
         }
     }
 
+    let attribute_string_values: Vec<String> = attribute_string_values.into_iter().collect();
+    for i in 0..attribute_string_values.len() {
+        let attr_val = &attribute_string_values[ i ];
+        match attr_val.as_str() {
+            "true" | "false" => { /* nothing */ },
+            string => {
+                let try_as_u16: Result<u16, ParseIntError> = string.parse();
+                if let Err( _ ) = try_as_u16 {
+                    constants += &format!( "{}_ATTR_{} = {}\n", level_label_const_caps, attribute_string_values[ i ].to_uppercase(), i );
+                }
+            }
+        }
+    }
+
     let component_ids: Vec<String> = component_ids.into_iter().collect();
-    let mut constants: String = String::new();
     for i in 0..component_ids.len() {
         let component_id = &component_ids[ i ];
         constants += &format!( "{}_{} = {}\n", level_label_const_caps, component_id.to_uppercase(), i );