From 83cc561cce4780a99399370c362e85d882cc9d35 Mon Sep 17 00:00:00 2001
From: Tony Garnock-Jones <tonyg@leastfixedpoint.com>
Date: Thu, 20 Jan 2022 20:48:30 +0100
Subject: [PATCH] Turn.every

---
 packages/core/src/runtime/actor.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/packages/core/src/runtime/actor.ts b/packages/core/src/runtime/actor.ts
index f36d59a..441fcde 100644
--- a/packages/core/src/runtime/actor.ts
+++ b/packages/core/src/runtime/actor.ts
@@ -450,6 +450,21 @@ export class Turn {
         if (a !== null) this.enqueue(ref.relay, () => ref.target.message?.(assertion));
     }
 
+    every(periodMilliseconds: number, a: LocalAction): any {
+        const facet = this.activeFacet;
+        facet.preventInertCheck();
+        let handle: any = setInterval(() => {
+            facet.turn(a);
+        }, periodMilliseconds);
+        facet.onStop(() => {
+            if (handle !== null) {
+                clearInterval(handle);
+                handle = null;
+            }
+        });
+        return handle;
+    }
+
     after(delayMilliseconds: number, a: LocalAction): any {
         const facet = this.activeFacet;
         const release = facet.preventInertCheck();