From 1bc69dceb044af644103aa29e5fa2249655a75a6 Mon Sep 17 00:00:00 2001
From: David Thompson <dthompson2@worcester.edu>
Date: Sat, 14 Oct 2017 13:48:18 -0400
Subject: scripting: Fix bug where dynamic state wasn't being respected.

* chickadee/scripting/coroutine.scm (spawn-coroutine): Save dynamic
  state during coroutine execution.
* chickadee/scripting.scm (wait): Schedule continuation in the
  coroutine's current agenda.
---
 chickadee/scripting.scm           | 6 +++++-
 chickadee/scripting/coroutine.scm | 8 +++++---
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/chickadee/scripting.scm b/chickadee/scripting.scm
index 5d24ce9..d4a2b81 100644
--- a/chickadee/scripting.scm
+++ b/chickadee/scripting.scm
@@ -42,7 +42,11 @@
 
 (define (wait duration)
   "Wait DURATION before resuming the current coroutine."
-  (yield (lambda (cont) (schedule-after duration cont))))
+  (let ((agenda (current-agenda)))
+    (yield
+     (lambda (cont)
+       (with-agenda agenda
+         (schedule-after duration cont))))))
 
 (define* (tween duration start end proc #:key
                 (step 1)
diff --git a/chickadee/scripting/coroutine.scm b/chickadee/scripting/coroutine.scm
index 38f0da0..642ff83 100644
--- a/chickadee/scripting/coroutine.scm
+++ b/chickadee/scripting/coroutine.scm
@@ -71,9 +71,11 @@
             handler)))
       (when (procedure? callback)
         (apply callback resume args)))
-    (define (task)
-      (thunk)
-      (set-coroutine-status! co 'complete))
+    (define task
+      (let ((dynamic-state (current-dynamic-state)))
+        (lambda ()
+          (with-dynamic-state dynamic-state thunk)
+          (set-coroutine-status! co 'complete))))
     ;; Start the coroutine.
     (call-with-prompt coroutine-prompt task handler)
     co))
-- 
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