From 959791ffde7bed820a319fbe228dcafddf7cb645 Mon Sep 17 00:00:00 2001
From: Mathias Froehlich <Mathias.Froehlich@web.de>
Date: Tue, 30 Aug 2011 07:28:13 +0200
Subject: [PATCH] Add modifyLookahead to the rti abstraction.

---
 simgear/hla/HLAFederate.cxx     |  6 ++++++
 simgear/hla/HLAFederate.hxx     |  1 +
 simgear/hla/RTI13Ambassador.hxx |  2 ++
 simgear/hla/RTI13Federate.cxx   | 31 +++++++++++++++++++++++++++++++
 simgear/hla/RTI13Federate.hxx   |  1 +
 simgear/hla/RTIFederate.hxx     |  1 +
 6 files changed, 42 insertions(+)

diff --git a/simgear/hla/HLAFederate.cxx b/simgear/hla/HLAFederate.cxx
index 96e31fc3..d16494c9 100644
--- a/simgear/hla/HLAFederate.cxx
+++ b/simgear/hla/HLAFederate.cxx
@@ -113,6 +113,12 @@ HLAFederate::queryFederateTime(SGTimeStamp& timeStamp)
     return _rtiFederate->queryFederateTime(timeStamp);
 }
 
+bool
+HLAFederate::modifyLookahead(const SGTimeStamp& timeStamp)
+{
+    return _rtiFederate->modifyLookahead(timeStamp);
+}
+
 bool
 HLAFederate::queryLookahead(SGTimeStamp& timeStamp)
 {
diff --git a/simgear/hla/HLAFederate.hxx b/simgear/hla/HLAFederate.hxx
index 241f6093..7376540e 100644
--- a/simgear/hla/HLAFederate.hxx
+++ b/simgear/hla/HLAFederate.hxx
@@ -59,6 +59,7 @@ public:
     bool timeAdvanceRequest(const SGTimeStamp& dt);
 
     bool queryFederateTime(SGTimeStamp& timeStamp);
+    bool modifyLookahead(const SGTimeStamp& timeStamp);
     bool queryLookahead(SGTimeStamp& timeStamp);
 
     /// Process messages
diff --git a/simgear/hla/RTI13Ambassador.hxx b/simgear/hla/RTI13Ambassador.hxx
index 502a39f7..5446f858 100644
--- a/simgear/hla/RTI13Ambassador.hxx
+++ b/simgear/hla/RTI13Ambassador.hxx
@@ -387,6 +387,8 @@ public:
         _rtiAmbassador.queryFederateTime(fedTime);
         timeStamp = toTimeStamp(fedTime);
     }
+    void modifyLookahead(const SGTimeStamp& timeStamp)
+    { _rtiAmbassador.modifyLookahead(toFedTime(timeStamp)); }
     void queryLookahead(SGTimeStamp& timeStamp)
     {
         RTIfedTime fedTime;
diff --git a/simgear/hla/RTI13Federate.cxx b/simgear/hla/RTI13Federate.cxx
index d3f9eebc..649a9f58 100644
--- a/simgear/hla/RTI13Federate.cxx
+++ b/simgear/hla/RTI13Federate.cxx
@@ -480,6 +480,37 @@ RTI13Federate::queryFederateTime(SGTimeStamp& timeStamp)
     return true;
 }
 
+bool
+RTI13Federate::modifyLookahead(const SGTimeStamp& timeStamp)
+{
+    if (!_ambassador.valid()) {
+        SG_LOG(SG_NETWORK, SG_WARN, "RTI: Could not modify lookahead.");
+        return false;
+    }
+    try {
+        _ambassador->modifyLookahead(timeStamp);
+    } catch (RTI::InvalidLookahead& e) {
+        SG_LOG(SG_NETWORK, SG_WARN, "RTI: Could not modify lookahead: " << e._name << " " << e._reason);
+        return false;
+    } catch (RTI::FederateNotExecutionMember& e) {
+        SG_LOG(SG_NETWORK, SG_WARN, "RTI: Could not modify lookahead: " << e._name << " " << e._reason);
+        return false;
+    } catch (RTI::ConcurrentAccessAttempted& e) {
+        SG_LOG(SG_NETWORK, SG_WARN, "RTI: Could not modify lookahead: " << e._name << " " << e._reason);
+        return false;
+    } catch (RTI::SaveInProgress& e) {
+        SG_LOG(SG_NETWORK, SG_WARN, "RTI: Could not modify lookahead: " << e._name << " " << e._reason);
+        return false;
+    } catch (RTI::RestoreInProgress& e) {
+        SG_LOG(SG_NETWORK, SG_WARN, "RTI: Could not modify lookahead: " << e._name << " " << e._reason);
+        return false;
+    } catch (RTI::RTIinternalError& e) {
+        SG_LOG(SG_NETWORK, SG_WARN, "RTI: Could not modify lookahead: " << e._name << " " << e._reason);
+        return false;
+    }
+    return true;
+}
+
 bool
 RTI13Federate::queryLookahead(SGTimeStamp& timeStamp)
 {
diff --git a/simgear/hla/RTI13Federate.hxx b/simgear/hla/RTI13Federate.hxx
index acad0fce..8ace9e58 100644
--- a/simgear/hla/RTI13Federate.hxx
+++ b/simgear/hla/RTI13Federate.hxx
@@ -61,6 +61,7 @@ public:
     virtual bool timeAdvanceRequest(const SGTimeStamp& fedTime);
 
     virtual bool queryFederateTime(SGTimeStamp& timeStamp);
+    virtual bool modifyLookahead(const SGTimeStamp& timeStamp);
     virtual bool queryLookahead(SGTimeStamp& timeStamp);
 
     /// Process messages
diff --git a/simgear/hla/RTIFederate.hxx b/simgear/hla/RTIFederate.hxx
index bdb68faa..c997704f 100644
--- a/simgear/hla/RTIFederate.hxx
+++ b/simgear/hla/RTIFederate.hxx
@@ -66,6 +66,7 @@ public:
     virtual bool timeAdvanceRequest(const SGTimeStamp& fedTime) = 0;
 
     virtual bool queryFederateTime(SGTimeStamp& timeStamp) = 0;
+    virtual bool modifyLookahead(const SGTimeStamp& timeStamp) = 0;
     virtual bool queryLookahead(SGTimeStamp& timeStamp) = 0;
 
     /// Process messages
-- 
2.39.2