165 lines
3.8 KiB
C++
165 lines
3.8 KiB
C++
#define SDL_MAIN_HANDLED
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#include <iostream>
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#include <fstream>
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#include <sstream>
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#include <cJSON.h>
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#include <SDL.h>
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#include <SDL_ttf.h>
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#include <SDL_mixer.h>
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#include <SDL_image.h>
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#include <SDL2_gfxPrimitives.h>
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void test_json()
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{
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std::ifstream file("test.json");
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if (!file.good())
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{
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std::cout << "无法打开文件" << std::endl;
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return;
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}
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std::stringstream str_stream;
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str_stream << file.rdbuf();
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file.close();
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cJSON* json_root = cJSON_Parse(str_stream.str().c_str());
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cJSON* json_name = cJSON_GetObjectItem(json_root, "name");
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cJSON* json_age = cJSON_GetObjectItem(json_root, "age");
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cJSON* json_pets = cJSON_GetObjectItem(json_root, "pets");
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std::cout << json_name->string << ":" << json_name->valuestring << std::endl;
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std::cout << json_age->string << ":" << json_age->valueint << std::endl;
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std::cout << json_pets->string << ":" << std::endl;
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cJSON* json_item = nullptr;
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cJSON_ArrayForEach(json_item, json_pets)
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{
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std::cout << "\t" << json_item->valuestring << std::endl;
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}
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}
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void test_csv()
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{
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std::ifstream file("test.csv");
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if (!file.good())
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{
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std::cout << "无法打开文件" << std::endl;
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return;
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}
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std::string str_line;
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while (std::getline(file, str_line))
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{
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std::string str_grid;
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std::stringstream str_stream(str_line);
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while (std::getline(str_stream, str_grid, ','))
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{
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std::cout << str_grid << " ";
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}
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std::cout << std::endl;
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}
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file.close();
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}
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int main()
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{
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test_json();
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std::cout << "============================" << std::endl;
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test_csv();
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SDL_Init(SDL_INIT_EVERYTHING);
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IMG_Init(IMG_INIT_JPG | IMG_INIT_PNG);
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Mix_Init(MIX_INIT_MP3);
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TTF_Init();
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Mix_OpenAudio(44100, MIX_DEFAULT_FORMAT, 2, 2048);
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//创建窗口和与之关联的渲染器
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SDL_Window* window = SDL_CreateWindow(u8"你好，世界 ", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_SHOWN);
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SDL_Renderer* renderer = SDL_CreateRenderer(window,-1,SDL_RENDERER_ACCELERATED);
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//加载图像并创建纹理
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SDL_Surface* suf_img = IMG_Load("avatar.jpg");
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SDL_Texture* tex_img = SDL_CreateTextureFromSurface(renderer,suf_img);
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TTF_Font* font = TTF_OpenFont("ipix.ttf", 32);
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SDL_Color color = { 255,255,255,255 };
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SDL_Surface* suf_text = TTF_RenderUTF8_Blended(font, u8"你好，世界", color);
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SDL_Texture* tex_text = SDL_CreateTextureFromSurface(renderer, suf_text);
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Mix_Music* music = Mix_LoadMUS("music.mp3");
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Mix_FadeInMusic(music, -1, 1500);
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int fps = 60;
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bool is_quit = false;
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SDL_Event event;
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SDL_Point pos_cursor = { 0,0 };
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SDL_Rect rect_img,rect_text;
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Uint64 last_counter = SDL_GetPerformanceCounter();
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Uint64 counter_freq = SDL_GetPerformanceFrequency();
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rect_img.w = suf_img->w;
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rect_img.h = suf_img->h;
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rect_text.w = suf_text->w;
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rect_text.h = suf_text->h;
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while (!is_quit)
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{
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while (SDL_PollEvent(&event))
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{
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if (event.type == SDL_QUIT)
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{
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is_quit = true;
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}
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else if (event.type == SDL_MOUSEMOTION)
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{
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pos_cursor.x = event.motion.x;
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pos_cursor.y = event.motion.y;
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}
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}
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Uint64 current_counter = SDL_GetPerformanceCounter();
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double delta = (double)(current_counter - last_counter) / counter_freq;
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last_counter = current_counter;
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if (delta * 1000 < 1000.0 / 60)
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SDL_Delay((Uint32)1000.0 / 60 - delta * 1000);
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//处理数据
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rect_img.x = pos_cursor.x;
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rect_img.y = pos_cursor.y;
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rect_text.x = pos_cursor.x;
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rect_text.y = pos_cursor.y;
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SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
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SDL_RenderClear(renderer);//清除渲染器
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//渲染绘图
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SDL_RenderCopy(renderer, tex_img, nullptr, &rect_img);//复制纹理到渲染器
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filledCircleRGBA(renderer, pos_cursor.x, pos_cursor.y, 50, 255, 0, 0, 125);
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SDL_RenderCopy(renderer, tex_text, nullptr, &rect_text);
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SDL_RenderPresent(renderer);//更新屏幕显示
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}
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return 0;
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}
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/**SDL_FreeSurface：释放不再需要的 SDL_Surface。
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SDL_DestroyTexture、SDL_DestroyRenderer 和 SDL_DestroyWindow：销毁纹理、渲染器和窗口。**/
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