From b1a3428bd8ae63214329cb571995a600415c8a8b Mon Sep 17 00:00:00 2001
From: mfranz <mfranz>
Date: Tue, 30 Sep 2008 18:11:46 +0000
Subject: [PATCH] make slewProp(), and with it {aileron,elevator,rudder}Trim
 return new value

---
 Nasal/controls.nas | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Nasal/controls.nas b/Nasal/controls.nas
index 4a76092cd..48a7775cf 100644
--- a/Nasal/controls.nas
+++ b/Nasal/controls.nas
@@ -162,11 +162,12 @@ var stepProps = func {
 # a rate, in units per second.  NOTE: this modifies the property for
 # the current frame only; it is intended to be called by bindings
 # which repeat each frame.  If you want to cause motion over time, see
-# interpolate().
+# interpolate(). Returns new value.
 #
 var slewProp = func(prop, delta) {
     delta *= getprop("/sim/time/delta-realtime-sec");
-    setprop(prop, getprop(prop) + delta);
+    setprop(prop, var val = getprop(prop) + delta);
+    return val;
 }
 
 # Standard trim rate, in units per second.  Remember that the full