/* -*- tab-width: 4; -*- */ /* vi: set sw=2 ts=4 expandtab: */ #ifndef APP_BASE_SDL_H_1456211087 #define APP_BASE_SDL_H_1456211087 /* $Id: f63e0a9e6eed51ed84a8eea1eff0708c8a6af22b $ */ /* * Copyright 2015-2020 Mark Callow. * SPDX-License-Identifier: Apache-2.0 */ /** * @internal * @file AppBaseSDL.h * @~English * * @brief Declarations for App framework using SDL. */ #include <SDL2/SDL.h> #include <string> #include <vector> class AppBaseSDL { public: typedef Uint64 ticks_t; typedef std::vector<std::string> Args; AppBaseSDL(const char* const name) : szName(name), appTitle(name) { } virtual bool initialize(Args& args); virtual void finalize(); // Ticks in milliseconds since start. virtual void drawFrame(uint32_t) { } // When used with SDL_SetEventWatch, return value is ignored. When used // with SDL_SetEventFilter, 1 causes event to be added to SDL's internal // event queue, 0 causes it to be dropped. virtual int doEvent(SDL_Event* event); virtual void onFPSUpdate(); virtual SDL_Window* getMainWindow() { return pswMainWindow; } void drawFrame(); void initializeFPSTimer(); const char* name() { return szName; } const std::string getAssetPath() { return sBasePath; } // Sets title to be used on window title bar. Content of szExtra ia // appended to the app name. virtual void setAppTitle(const char* const szExtra); static int onEvent(void* userdata, SDL_Event* event) { return ((AppBaseSDL *)userdata)->doEvent(event); } static void onDrawFrame(void* userdata) { ((AppBaseSDL *)userdata)->drawFrame(); } protected: // Sets text on window title bar. Fps value is preprended to appTitle. virtual void setWindowTitle(); ticks_t startTicks; float lastFrameTime; // ms struct fpsCounter { ticks_t startTicks; int numFrames; float lastFPS; } fpsCounter; SDL_Window* pswMainWindow; const char* const szName; std::string appTitle; std::string sBasePath; }; extern class AppBaseSDL* theApp; #endif /* APP_BASE_SDL_H_1456211087 */