1 files changed, 20 insertions, 1 deletions
diff --git a/src/sim/cell.rs b/src/sim/cell.rs
index 2e26ddc..d3ca302 100644
--- a/src/sim/cell.rs
+++ b/src/sim/cell.rs
@@ -4,6 +4,20 @@ use crate::sim::materials::MaterialId;
 pub struct Cell {
     pub material: MaterialId,
     pub flags: u8,
+    pub data: u16,
+}
+
+impl Cell {
+    const FLAG_PARITY: u8 = 0b0000_0001;
+
+    #[inline]
+    pub fn parity(self) -> u8 {
+        self.flags & Self::FLAG_PARITY
+    }
+    #[inline]
+    pub fn flip_parity(&mut self) {
+        self.flags ^= Self::FLAG_PARITY;
+    }
 }
 
 impl Cell {
@@ -11,9 +25,14 @@ impl Cell {
         Cell {
             material: MaterialId::Void,
             flags: 0,
+            data: 0,
         }
     }
     pub fn from_material(material: MaterialId) -> Cell {
-        Cell { material, flags: 0 }
+        Cell {
+            material,
+            flags: 0,
+            data: 0,
+        }
     }
 }