make map length getter use length field

noita_api/src/noita/types.rs

@@ -509,10 +509,10 @@ impl<K: 'static, V: 'static> StdMap<K, V> {
         }
     }
     pub fn len(&self) -> usize {
-        self.iter().count()
+        self.len
     }
     pub fn is_empty(&self) -> bool {
-        self.iter().next().is_none()
+        self.len == 0
     }
     pub fn iter_keys(&self) -> impl Iterator<Item = &'static K> {
         self.iter().map(|(k, _)| k)

noita_api/src/noita/types/component.rs

@@ -422,17 +422,22 @@ impl BitSet<8> {
     }
 }
 #[repr(C)]
-#[derive(Debug, Default)]
+#[derive(Debug)]
 pub struct ComponentSystemManager {
     pub update_order: StdVec<&'static ComponentSystem>,
     pub component_updaters: StdVec<&'static ComponentUpdater>,
-    pub map: StdMap<StdString, [*const usize; 4]>,
+    pub component_vtables: StdMap<StdString, ComponentLuaVTable>,
     pub unk: [*const usize; 8],
     pub unk2: StdVec<*const usize>,
     pub unk3: [*const usize; 7],
 }
 #[repr(C)]
 #[derive(Debug)]
+pub struct ComponentLuaVTable {
+    unk: [*const usize; 16],
+}
+#[repr(C)]
+#[derive(Debug)]
 pub struct ComponentUpdater {
     pub vtable: &'static ComponentUpdaterVTable,
     pub name: StdString,