1 files changed, 18 insertions, 0 deletions
diff --git a/src/simulation/postprocess.js b/src/simulation/postprocess.js
new file mode 100644
index 0000000..d50839e
--- /dev/null
+++ b/src/simulation/postprocess.js
@@ -0,0 +1,18 @@
+'use strict';
+
+export const postprocess = [
+  (world) => ({
+    ...world,
+    agents: world.agents.map(a => {
+      const {x, y} = a;
+      if (
+        world.lattice[y][x].type === 'mutable' ||
+        world.lattice[y][x].type === 'active'
+    ) {
+        return { ...a, flags: {...a.flags, frozen: true } };
+      } else {
+        return a;
+      }
+    }),
+  }),
+];