34 lines
975 B
C++
34 lines
975 B
C++
#pragma once
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#include "SSR/Msg.h"
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#include <chrono>
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struct Player_Clock {
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using clock = std::chrono::system_clock;
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SSR::Play_Back_Time_Point start_time; // 抽象时间起点
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std::chrono::time_point<std::chrono::system_clock> true_start_time; // 真正开始回放的墙钟起点
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double playback_speed_rate = 20.0;
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Player_Clock() {
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true_start_time = clock::now();
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}
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SSR::Play_Back_Time_Point get_cur_time_point() const noexcept {
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const auto now = clock::now();
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// 防御：系统时间回拨或还没初始化导致 now < true_start_time
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const double real_elapsed_sec =
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std::max(0.0, std::chrono::duration<double>(now - true_start_time).count());
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const double sim_elapsed_sec = real_elapsed_sec * playback_speed_rate;
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// Time_Point 只有秒精度：向下取整
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const auto add = static_cast<std::uint64_t>(sim_elapsed_sec);
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SSR::Play_Back_Time_Point tp = start_time;
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tp.add_sec(add);
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return tp;
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}
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};
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