Write SqlDbLayer

src/data/entities.rs

@@ -185,7 +185,7 @@ impl CardStatistics {
 #[derive(Copy)]
 pub struct EntityHandle<E> {
     pub(crate) id: Id,
-    index: i32,
+    index: u32,
     pub(crate) _phantom: PhantomData<E>,
 }
 
@@ -202,7 +202,7 @@ impl<T> EntityHandle<T> {
     pub fn new(id: Id, index: usize, real: bool) -> Self {
         Self {
             id,
-            index: index as i32 | (!real as i32) << 31,
+            index: ((index as u32) << 1 >> 1) | (!real as u32) << 31,
             _phantom: Default::default(),
         }
     }
@@ -211,7 +211,7 @@ impl<T> EntityHandle<T> {
     }
 
     pub fn set_index(&mut self, index: usize) {
-        self.index = self.index >> 31 << 31 | index as i32;
+        self.index = (self.index >> 31 << 31) | ((index as u32) << 1 >> 1);
     }
 
     pub fn real(&self) -> bool {
@@ -219,7 +219,7 @@ impl<T> EntityHandle<T> {
     }
 
     pub fn set_real(&mut self, value: bool) {
-        self.index = self.index << 1 >> 1 | (!value as i32) << 31;
+        self.index = self.index << 1 >> 1 | (!value as u32) << 31;
     }
 }
 impl<T> Eq for EntityHandle<T> {}