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Spectre/Game/GameTime: Store max accumulated time in a member variable and calculate it once in setTimeStep()

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This commit is contained in:
Henrik Hautakoski 2020-12-18 18:26:22 +01:00
parent 2a608805b5
commit db695f11f6
2 changed files with 4 additions and 2 deletions
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1
include/Spectre/Game/GameTime.h
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@ -39,6 +39,7 @@ protected :
Stopwatch m_watch; Stopwatch m_watch;
Time m_acc; Time m_acc;
Time m_max_acc;
// Timeslice. // Timeslice.
Time m_slice; Time m_slice;

5
source/Game/GameTime.cpp
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@ -18,6 +18,7 @@ double GameTime::getTimeStep() const
void GameTime::setTimeStep(unsigned long updates_per_sec) void GameTime::setTimeStep(unsigned long updates_per_sec)
{ {
m_slice = Time::seconds(1.0f / ((double) updates_per_sec)); m_slice = Time::seconds(1.0f / ((double) updates_per_sec));
m_max_acc = Time::seconds(1.0f / m_slice.seconds());
reset(); reset();
} }
@ -58,8 +59,8 @@ void GameTime::reset()
void GameTime::accumulateTime() void GameTime::accumulateTime()
{ {
m_acc += m_watch.restart(); m_acc += m_watch.restart();
if (m_acc.seconds() > (1.0f / m_slice.seconds())) { if (m_acc > m_max_acc) {
m_acc = Time::seconds(1.0f / m_slice.seconds()); m_acc = m_max_acc;
} }
} }