149 lines
3.0 KiB
C++
149 lines
3.0 KiB
C++
#include "UtilityCommon.h"
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#include "./ITimeout.h"
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//==================================================================================================
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#if __ITIMERBASE_VERSION_CRTL == 0x0120
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namespace util {
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;
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//
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//
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//------------------------------------------------------------------------------
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//
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//
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bool
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ITimerBase::SetTimer(ulong interval, bool start, bool auto_reset)
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{
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Clear();
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// eMode_ManualReset | eMode_AutoReset
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SetInterval(interval);
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if (auto_reset) {
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is_auto_ = true;
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};
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if (start) {
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Start();
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}
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else {
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Stop();
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};
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return true;
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}
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/*
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thinking notes:
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current
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timeout
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interval
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// timeout#2 current timeout#1
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//---------|---------|---------|-------
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//
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timeout#2 - type overflow¿¡ ÀÇÇؼ ¹ß»ýÇÒ ¼ö ÀÖ´Ù.
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expired
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current < timeout#1 X
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current + interval < timeout X
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if (current > timeout) then expired
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if (current <= timeout) then
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*/
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bool
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ITimerBase::IsExpired() const
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{
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if (is_start_ == 0) {
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return false;
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}
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bool is_expired = false;
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ulong current = GetTickCount();
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; current >>= 2;
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ulong interval = interval_;
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ulong timeout = checked_ + interval;
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if (checked_ <= current)
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{
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if (timeout <= current) {
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is_expired = true;
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}
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}
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else
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{
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const ulong UpperLimit = (ULONG_MAX >> 2) + 1;
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current += UpperLimit;
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if (timeout <= current) {
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is_expired = true;
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}
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};
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if (is_expired) {
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Reset();
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}
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return is_expired;
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}
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ulong ITimerBase::GetRemainTicks() const
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{
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if (is_start_ == 0) {
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return ULONG_MAX;
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}
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bool is_expired = false;
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ulong current = GetTickCount();
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; current >>= 2;
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ulong interval = interval_;
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ulong timeout = checked_ + interval;
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if (checked_ <= current)
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{
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if (timeout <= current) {
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is_expired = true;
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}
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}
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else
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{
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const ulong UpperLimit = (ULONG_MAX >> 2) + 1;
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current += UpperLimit;
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if (timeout <= current) {
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is_expired = true;
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}
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};
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if (is_expired) {
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return 0;
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}
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return static_cast<ulong>((timeout - current) << 2);
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}
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// interfaces to support a game timer
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float ITimerBase::GetProgressRatio() const
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{
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ulong interval = GetInterval();
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if (interval == 0) {
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return 1.0f;
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};
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ulong remains = GetRemainTicks();
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if (remains == ULONG_MAX) {
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return 0.0f;
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}
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if (remains == 0) {
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return 1.0f;
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};
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float progress = static_cast<float>(remains) / interval;
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; progress = 1.0f - progress;
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return progress;
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}
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ulong ITimerBase::GetProcessTime() const
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{
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float progress = GetProgressRatio();
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if (progress <= 0.0f) {
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return 0;
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};
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ulong interval = GetInterval();
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if (progress >= 1.0f) {
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return interval;
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}
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progress *= interval;
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return static_cast<ulong>(progress);
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}
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}; //end of namespace
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#endif //__ITIMERBASE_VERSION_CRTL == 0x0120
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