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Performance: cache TCAS nodes on AI aircraft

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Removes some remaining hot property lookups each frame
This commit is contained in:
James Turner 2018-09-24 15:34:20 +01:00
parent 421a5601c1
commit 8b25244d90
2 changed files with 10 additions and 7 deletions
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13
src/AIModel/AIAircraft.cxx
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@ -105,6 +105,9 @@ FGAIAircraft::FGAIAircraft(FGAISchedule *ref) :
trackCache.remainingLength = 0;
trackCache.startWptName = "-";
tcasThreatNode = props->getNode("tcas/threat-level", true);
tcasRANode = props->getNode("tcas/ra-sense", true);
}
@ -443,15 +446,13 @@ void FGAIAircraft::assertSpeed(double speed)
void FGAIAircraft::checkTcas(void)
{
if (props->getIntValue("tcas/threat-level",0)==3)
if (tcasThreatNode->getIntValue()==3)
{
int RASense = props->getIntValue("tcas/ra-sense",0);
if ((RASense>0)&&(tgt_vs<4000))
const int RASense = tcasRANode->getIntValue();
if ((RASense>0)&&(tgt_vs<4000)) {
// upward RA: climb!
tgt_vs = 4000;
else
if (RASense<0)
{
} else if (RASense<0) {
// downward RA: descend!
if (altitude_ft < 1000)
{

4
src/AIModel/AIAircraft.hxx
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@ -132,7 +132,9 @@ private:
bool use_perf_vs;
SGPropertyNode_ptr refuel_node;
SGPropertyNode_ptr tcasThreatNode;
SGPropertyNode_ptr tcasRANode;
// helpers for Run
//TODO sort out which ones are better protected virtuals to allow
//subclasses to override specific behaviour