time_manager.h

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#pragma once
#include "helpers/logging.h"
 
class TimeManager {
    Uint64 lastTick    = SDL_GetPerformanceCounter();
    Uint64 currentTick = 0;
    float deltaTime    = 0.0;
 
    Uint64 frameCount = 0;
    float elapsedTime = 0.0;
    float fps         = 0.0;
 
    /* MAX_FPS = 1 -> UNLIMITED */
    Uint32 MAX_FPS    = 60;
    bool bIsPaused    = false;
    Uint64 pausedTick = 0;
 
 
public:
    TimeManager() {
        lastTick = SDL_GetPerformanceCounter();
    }
 
    float GetDeltaTime() {
        if (bIsPaused) {
            return 0.0f;
        }
 
        return this->deltaTime;
    }
 
    Uint64 GetFrameCount() {
        return this->frameCount;
    }
 
    float GetElapsedTime() {
        return this->elapsedTime;
    }
 
    void SetMaxFps(Uint32 fps) {
        this->MAX_FPS = fps;
 
        LOG_INFO("Target FPS (frames per second) to %02.03f ms", (float) fps * 1000.f);
    }
 
    float GetFps() {
        return this->fps;
    }
 
    bool IsPaused() {
        return this->bIsPaused;
    }
 
    void Pause();
 
    void Resume();
 
    void Update();
 
    /* max_fps = 1 -> UNLIMITED */
    void FixedFrameRate(Uint32 max_fps = 60);
};