1 files changed, 23 insertions, 2 deletions
diff --git a/src/simulation/actions.js b/src/simulation/actions.js
index dd7c4e6..e389518 100644
--- a/src/simulation/actions.js
+++ b/src/simulation/actions.js
@@ -100,7 +100,7 @@ const place = {
 const trigger = {
   size: 1,
   propose: (world, agent, head) => {
-  if (head[0] < threshold) { return []; }
+    if (head[0] < threshold) { return []; }
     else {
       const dx = { n: 0, e: 1, s: 0, w: -1 }[agent.flags.orientation];
       const dy = { n: -1, e: 0, s: 1, w: 0 }[agent.flags.orientation];
@@ -116,7 +116,28 @@ const trigger = {
 };
 
 
+const pretend_frozen = {
+  size: 1,
+  propose: (world, agent, head) => {
+    if (head[0] < threshold) { return [{
+      agent_changes: [{
+        agent_id: agent.id,
+        flags: { pretend_frozen: false },
+      }],
+    }]; }
+    else {
+      return [{
+        agent_changes: [{
+          agent_id: agent.id,
+          flags: { pretend_frozen: true },
+        }]
+      }];
+    }
+  },
+};
+
+
 export const actions = [
   move_forward, move_backward, turn_left, turn_right, 
-  place, trigger,
+  place, trigger, pretend_frozen,
 ];