mirror of
https://github.com/k4zmu2a/SpaceCadetPinball.git
synced 2024-09-08 01:50:24 +02:00
116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
#pragma once
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#include "gdrv.h"
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enum class GameBindings;
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struct SdlTickClock
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{
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using duration = std::chrono::milliseconds;
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using rep = duration::rep;
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using period = duration::period;
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using time_point = std::chrono::time_point<SdlTickClock>;
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static constexpr bool is_steady = true;
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static time_point now() noexcept
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{
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return time_point{duration{SDL_GetTicks()}};
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}
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};
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struct SdlPerformanceClock
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{
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using duration = std::chrono::duration<uint64_t, std::nano>;
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using rep = duration::rep;
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using period = duration::period;
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using time_point = std::chrono::time_point<SdlPerformanceClock>;
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static constexpr bool is_steady = true;
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static time_point now() noexcept
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{
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const auto freq = SDL_GetPerformanceFrequency();
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const auto ctr = SDL_GetPerformanceCounter();
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const auto whole = (ctr / freq) * period::den;
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const auto part = (ctr % freq) * period::den / freq;
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return time_point(duration(whole + part));
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}
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};
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struct WelfordState
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{
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double mean;
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double M2;
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int64_t count;
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WelfordState() : mean(0.005), M2(0), count(1)
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{
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}
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void Advance(double newValue)
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{
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++count;
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auto delta = newValue - mean;
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mean += delta / count;
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M2 += delta * (newValue - mean); //M2n = M2n-1 + (Xn - AvgXn-1) * (Xn - AvgXn)
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}
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double GetStdDev() const
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{
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return std::sqrt(M2 / (count - 1)); // Sn^2 = M2n / (n - 1)
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}
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};
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class winmain
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{
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using Clock = SdlPerformanceClock; // Or std::chrono::steady_clock.
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using DurationMs = std::chrono::duration<double, std::milli>;
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using TimePoint = std::chrono::time_point<Clock>;
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public:
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static constexpr const char* Version = "2.1.0 DEV";
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static bool single_step;
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static SDL_Window* MainWindow;
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static SDL_Renderer* Renderer;
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static ImGuiIO* ImIO;
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static bool LaunchBallEnabled;
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static bool HighScoresEnabled;
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static bool DemoActive;
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static int MainMenuHeight;
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static int WinMain(LPCSTR lpCmdLine);
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static int event_handler(const SDL_Event* event);
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[[ noreturn ]] static void memalloc_failure();
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static int ProcessWindowMessages();
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static void a_dialog();
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static void end_pause();
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static void new_game();
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static void pause(bool toggle = true);
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static void Restart();
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static void UpdateFrameRate();
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static void HandleGameBinding(GameBindings binding, bool shortcut);
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private:
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static int return_value;
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static int mouse_down, last_mouse_x, last_mouse_y;
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static bool no_time_loss, activated, bQuit, has_focus, DispGRhistory, DispFrameRate;
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static std::vector<float> gfrDisplay;
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static std::string FpsDetails, PrevSdlError;
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static bool restart;
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static bool ShowAboutDialog;
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static bool ShowImGuiDemo;
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static bool ShowSpriteViewer;
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static bool ShowExitPopup;
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static double UpdateToFrameRatio;
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static DurationMs TargetFrameTime;
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static struct optionsStruct& Options;
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static DurationMs SpinThreshold;
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static WelfordState SleepState;
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static unsigned PrevSdlErrorCount;
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static unsigned gfrOffset;
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static float gfrWindow;
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static int CursorIdleCounter;
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static void RenderUi();
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static void RenderFrameTimeDialog();
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static void HybridSleep(DurationMs seconds);
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static void MainLoop();
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static void ImGuiMenuItemWShortcut(GameBindings binding, bool selected = false);
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};
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