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[xplane] Add monitoring of the number of track miles lost due to low FPS

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This commit is contained in:
Mat Sutcliffe
2020-01-23 18:42:41 +00:00
parent 3a73933cf1
commit 377b2f6a3e
10 changed files with 52 additions and 16 deletions
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32
src/xswiftbus/service.cpp
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@@ -14,6 +14,7 @@
#include <XPLM/XPLMPlanes.h>
#include <XPLM/XPLMUtilities.h>
#include <cmath>
#include <cstring>
#include <algorithm>
@@ -28,31 +29,35 @@ namespace XSwiftBus
{
DataRef<xplane::data::sim::operation::misc::frame_rate_period> m_thisFramePeriod;
DataRef<xplane::data::sim::time::framerate_period> m_thisFramePeriodXP11;
DataRef<xplane::data::sim::flightmodel::position::groundspeed> m_groundSpeed;
std::vector<float> m_samples;
float m_total = 0;
float m_totalOverBudget = 0;
float m_totalMetersShort = 0;
size_t m_lastSampleIndex = 0;
static constexpr size_t c_maxSampleCount = 500;
static constexpr float c_framePeriodBudget = 0.05f;
FramePeriodSampler() : CDrawable(xplm_Phase_LastCockpit, false) {}
std::pair<float, float> getFrameStats()
std::tuple<float, float, float> getFrameStats()
{
if (m_total == 0) { return {}; }
const float fps = m_samples.size() / m_total;
const float ratio = 1 - m_totalOverBudget / m_total;
const float miles = m_totalMetersShort / 1852.0f;
m_total = 0;
m_totalOverBudget = 0;
m_samples.clear();
m_lastSampleIndex = 0;
return { fps, ratio };
return std::make_tuple(fps, ratio, miles);
}
protected:
virtual void draw() override // called once per frame
{
float current = m_thisFramePeriodXP11.isValid() ? m_thisFramePeriodXP11.get() : m_thisFramePeriod.get();
const float current = m_thisFramePeriodXP11.isValid() ? m_thisFramePeriodXP11.get() : m_thisFramePeriod.get();
++m_lastSampleIndex %= c_maxSampleCount;
if (m_samples.size() == c_maxSampleCount)
@@ -72,6 +77,9 @@ namespace XSwiftBus
{
m_totalOverBudget += current - c_framePeriodBudget;
}
const float metersShort = m_groundSpeed.get() * std::max(0.0f, current - c_framePeriodBudget);
m_totalMetersShort += metersShort;
}
};
@@ -110,11 +118,20 @@ namespace XSwiftBus
return XSWIFTBUS_COMMIT;
}
std::pair<double, double> CService::getFrameStats()
std::tuple<double, double, double> CService::getFrameStats()
{
if (!m_framePeriodSampler) { return {}; }
const auto result = m_framePeriodSampler->getFrameStats();
return { static_cast<double>(result.first), static_cast<double>(result.second) };
return std::make_tuple(static_cast<double>(std::get<0>(result)), static_cast<double>(std::get<1>(result)), static_cast<double>(std::get<2>(result)));
}
void CService::resetMilesLost()
{
if (m_framePeriodSampler)
{
m_framePeriodSampler->m_totalMetersShort = 0;
m_framePeriodSampler->m_totalSecondsLate = 0;
}
}
void CService::addTextMessage(const std::string &text, double red, double green, double blue)
@@ -570,8 +587,9 @@ namespace XSwiftBus
const auto stats = getFrameStats();
CDBusMessage reply = CDBusMessage::createReply(sender, serial);
reply.beginArgumentWrite();
reply.appendArgument(stats.first);
reply.appendArgument(stats.second);
reply.appendArgument(std::get<0>(stats));
reply.appendArgument(std::get<1>(stats));
reply.appendArgument(std::get<2>(stats));
sendDBusMessage(reply);
});
}