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GPS: work around aircraft with missing power.

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This restores compatibility with 2.10 and previous versions,
where even explicit (non default) GPS ignores power requirements.
This commit is contained in:
James Turner 2013-06-16 22:21:41 +01:00
parent fb30e3609e
commit 26a8ffb44e
1 changed files with 4 additions and 1 deletions
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5
src/Instrumentation/gps.cxx
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@ -287,7 +287,10 @@ GPS::update (double delta_time_sec)
{
if (!_defaultGPSMode) {
// If it's off, don't bother.
if (!_serviceable_node->getBoolValue() || !_electrical_node->getBoolValue()) {
// check if value is defined, since many aircraft don't define an output
// for the GPS, but expect the default one to work.
bool elecOn = !_electrical_node->hasValue() || _electrical_node->getBoolValue();
if (!_serviceable_node->getBoolValue() || !elecOn) {
clearOutput();
return;
}