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49 lines
895 B
49 lines
895 B
7 years ago
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#include "FrameWatcher.h"
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#include <chrono>
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FrameWatcher::FrameWatcher() {
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}
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FrameWatcher::~FrameWatcher()
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{
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}
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void FrameWatcher::do_tick() {
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elapsed_time = get_elapsed_time();
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delta_time = elapsed_time - current_time;
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current_time = elapsed_time;
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if (delta_time > 0.2f)
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delta_time = 0.2f;
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accumulator_time += delta_time;
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while ((accumulator_time - step_size) >= step_size) {
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accumulator_time -= step_size;
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// ==== DELTA TIME LOCKED ====
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}
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}
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float FrameWatcher::get_elapsed_time() {
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static std::chrono::time_point<std::chrono::system_clock> start;
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static bool started = false;
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if (!started) {
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start = std::chrono::system_clock::now();
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started = true;
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}
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std::chrono::time_point<std::chrono::system_clock> now = std::chrono::system_clock::now();
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std::chrono::duration<double> elapsed_time = now - start;
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return static_cast<float>(elapsed_time.count());
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}
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