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Pomme
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Implement TickCount

This commit is contained in:
Iliyas Jorio 2021-02-22 21:52:11 +01:00
parent 2f57b5245e
commit 9260f05025
5 changed files with 19 additions and 30 deletions
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1
CMakeLists.txt
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@ -15,7 +15,6 @@ set(POMME_SOURCES
${POMME_SRCDIR}/PommeInit.h
${POMME_SRCDIR}/PommeInput.h
${POMME_SRCDIR}/PommeSound.h
${POMME_SRCDIR}/PommeTime.h
${POMME_SRCDIR}/PommeTypes.h
${POMME_SRCDIR}/PommeVideo.h
${POMME_SRCDIR}/Files/Files.cpp

2
src/Pomme.cpp
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@ -3,7 +3,6 @@
#include "Pomme.h"
#include "PommeInit.h"
#include "PommeTime.h"
#include "PommeFiles.h"
#include "PommeGraphics.h"
#include "PommeSound.h"
@ -68,7 +67,6 @@ void ShowCursor()
void Pomme::Init()
{
Pomme::Time::Init();
Pomme::Files::Init();
Pomme::Graphics::Init();
Pomme::Sound::Init();

6
src/PommeTime.h
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@ -1,6 +0,0 @@
#pragma once
namespace Pomme::Time
{
void Init();
}

1
src/Text/TextUtilities.cpp
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@ -1,5 +1,4 @@
#include "Pomme.h"
#include "PommeTime.h"
#include "PommeTypes.h"
#include "PommeDebug.h"

39
src/Time/TimeManager.cpp
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@ -1,42 +1,41 @@
#include "Pomme.h"
#include "PommeTime.h"
#include "PommeTypes.h"
#include "PommeDebug.h"
#include <chrono>
#include <iostream>
#include <ctime>
#include <iomanip>
std::chrono::time_point<std::chrono::high_resolution_clock> bootTP;
using namespace std::chrono;
// timestamp (from unix epoch) of the mac epoch, Jan 1, 1904, 00:00:00
constexpr int JANUARY_1_1904 = -2'082'844'800;
// System time point on application start
static const time_point<high_resolution_clock> gBootTimePoint = high_resolution_clock::now();
// Timestamp of the Mac epoch (Jan 1, 1904, 00:00:00), relative to UNIX epoch (Jan 1, 1970, 00:00:00)
static constexpr int JANUARY_1_1904 = -2'082'844'800;
static int64_t GetMicrosecondsSinceBoot()
{
auto now = high_resolution_clock::now();
microseconds usecs = duration_cast<microseconds>(now - gBootTimePoint);
return usecs.count();
}
//-----------------------------------------------------------------------------
// Time Manager
void Pomme::Time::Init()
{
bootTP = std::chrono::high_resolution_clock::now();
}
void GetDateTime(unsigned long* secs)
{
*secs = (unsigned long) (std::time(nullptr) + JANUARY_1_1904);
}
void Microseconds(UnsignedWide* usecs)
void Microseconds(UnsignedWide* usecsOut)
{
auto now = std::chrono::high_resolution_clock::now();
auto usecs1 = std::chrono::duration_cast<std::chrono::microseconds>(now - bootTP);
auto usecs2 = usecs1.count();
usecs->lo = usecs2 & 0xFFFFFFFFL;
usecs->hi = (usecs2 >> 32) & 0xFFFFFFFFL;
auto usecs = GetMicrosecondsSinceBoot();
usecsOut->lo = (usecs ) & 0xFFFFFFFFL;
usecsOut->hi = (usecs >> 32) & 0xFFFFFFFFL;
}
UInt32 TickCount()
{
TODO();
return 0;
// A tick is approximately 1/60 of a second
return (UInt32) (60L * GetMicrosecondsSinceBoot() / 1'000'000L);
}