| 1 | #include <chrono> |
| 2 | #include <thread> |
| 3 |
|
| 4 | #include "Engine.hpp" |
| 5 | #include "ZydecoCommon.hpp" |
| 6 |
|
| 7 | Logger LOGGER("ENGINE"); |
| 8 |
|
| 9 | Engine::Engine(): |
| 10 | m_sdlWindow("Zydeco", SDL_WINDOW_MAXIMIZED), |
| 11 | m_tickLengthUs(1'000'000 / 60) |
| 12 | { |
| 13 | LOGGER.Log(Logger::INFO, "Initializing engine"); |
| 14 | } |
| 15 |
|
| 16 | Engine::~Engine() |
| 17 | { |
| 18 |
|
| 19 | } |
| 20 |
|
| 21 | void Engine::Start() |
| 22 | { |
| 23 | LOGGER.Log(Logger::INFO, "Entering engine loop"); |
| 24 |
|
| 25 | while (1) |
| 26 | { |
| 27 | auto current_time = std::chrono::high_resolution_clock::now(); |
| 28 | std::chrono::duration<double, std::micro> elapsed = current_time - m_tickStartTime; |
| 29 | m_tickStartTime = current_time; |
| 30 | if (!Update(elapsed.count())) { break; } |
| 31 |
|
| 32 | current_time = std::chrono::high_resolution_clock::now(); |
| 33 |
|
| 34 | if ((current_time - m_tickStartTime).count() < m_tickLengthUs) |
| 35 | { |
| 36 | std::this_thread::sleep_for(std::chrono::duration<double, std::micro>(16667)); |
| 37 | } |
| 38 | } |
| 39 | } |
| 40 |
|
| 41 | void Engine::Kill() |
| 42 | { |
| 43 |
|
| 44 | } |
| 45 |
|
| 46 | bool Engine::Update(uint64_t time_since_last_update_us) |
| 47 | { |
| 48 | m_tickStartTime = std::chrono::high_resolution_clock::now(); |
| 49 | // Update members |
| 50 | bool ret = m_sdlWindow.Update(time_since_last_update_us); |
| 51 | return ret; |
| 52 | } |
| 53 |
|
| 54 | /* |
| 55 | class Engine |
| 56 | { |
| 57 | public: |
| 58 | Engine(); |
| 59 | ~Engine(); |
| 60 | |
| 61 | void Start(); |
| 62 | void Kill(); |
| 63 | |
| 64 | void Update(); |
| 65 | |
| 66 | protected: |
| 67 | Window m_sdlWindow; |
| 68 | Scene m_scene; |
| 69 | Renderer m_renderer; |
| 70 | EventHandler m_eventHandler; |
| 71 | }; |
| 72 | */ |
| 73 |
|
Index