101 lines
2.5 KiB
C++
101 lines
2.5 KiB
C++
#define SDL_MAIN_HANDLED
|
||
|
||
#include <iostream>
|
||
|
||
#include <SDL.h>
|
||
#include <SDL_ttf.h>
|
||
#include <SDL_mixer.h>
|
||
#include <SDL_image.h>
|
||
#include <SDL2_gfxPrimitives.h>
|
||
|
||
int main()
|
||
{
|
||
|
||
SDL_Init(SDL_INIT_EVERYTHING);
|
||
IMG_Init(IMG_INIT_JPG | IMG_INIT_PNG);
|
||
Mix_Init(MIX_INIT_MP3);
|
||
TTF_Init();
|
||
|
||
Mix_OpenAudio(44100, MIX_DEFAULT_FORMAT, 2, 2048);
|
||
|
||
//创建窗口和与之关联渲染器
|
||
SDL_Window* window = SDL_CreateWindow(u8"你好,世界 ", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_SHOWN);
|
||
SDL_Renderer* renderer = SDL_CreateRenderer(window,-1,SDL_RENDERER_ACCELERATED);
|
||
|
||
//加载图像并创建纹理
|
||
SDL_Surface* suf_img = IMG_Load("avatar.jpg");
|
||
SDL_Texture* tex_img = SDL_CreateTextureFromSurface(renderer,suf_img);
|
||
|
||
TTF_Font* font = TTF_OpenFont("ipix.ttf", 32);
|
||
SDL_Color color = { 255,255,255,255 };
|
||
SDL_Surface* suf_text = TTF_RenderUTF8_Blended(font, u8"你好,世界", color);
|
||
SDL_Texture* tex_text = SDL_CreateTextureFromSurface(renderer, suf_text);
|
||
|
||
Mix_Music* music = Mix_LoadMUS("music.mp3");
|
||
Mix_FadeInMusic(music, -1, 1500);
|
||
|
||
int fps = 60;
|
||
|
||
bool is_quit = false;
|
||
|
||
SDL_Event event;
|
||
SDL_Point pos_cursor = { 0,0 };
|
||
SDL_Rect rect_img,rect_text;
|
||
Uint64 last_counter = SDL_GetPerformanceCounter();
|
||
Uint64 counter_freq = SDL_GetPerformanceFrequency();
|
||
|
||
|
||
rect_img.w = suf_img->w;
|
||
rect_img.h = suf_img->h;
|
||
|
||
rect_text.w = suf_text->w;
|
||
rect_text.h = suf_text->h;
|
||
|
||
while (!is_quit)
|
||
{
|
||
while (SDL_PollEvent(&event))
|
||
{
|
||
if (event.type == SDL_QUIT)
|
||
{
|
||
is_quit = true;
|
||
}
|
||
else if (event.type == SDL_MOUSEMOTION)
|
||
{
|
||
pos_cursor.x = event.motion.x;
|
||
pos_cursor.y = event.motion.y;
|
||
}
|
||
}
|
||
|
||
Uint64 current_counter = SDL_GetPerformanceCounter();
|
||
double delta = (double)(current_counter - last_counter) / counter_freq;
|
||
last_counter = current_counter;
|
||
if (delta * 1000 < 1000.0 / 60)
|
||
SDL_Delay((Uint32)1000.0 / 60 - delta * 1000);
|
||
|
||
//处理数据
|
||
rect_img.x = pos_cursor.x;
|
||
rect_img.y = pos_cursor.y;
|
||
|
||
rect_text.x = pos_cursor.x;
|
||
rect_text.y = pos_cursor.y;
|
||
|
||
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
|
||
SDL_RenderClear(renderer);//清除渲染器
|
||
|
||
//渲染绘图
|
||
SDL_RenderCopy(renderer, tex_img, nullptr, &rect_img);//复制纹理到渲染器
|
||
filledCircleRGBA(renderer, pos_cursor.x, pos_cursor.y, 50, 255, 0, 0, 125);
|
||
SDL_RenderCopy(renderer, tex_text, nullptr, &rect_text);
|
||
|
||
SDL_RenderPresent(renderer);//更新屏幕显示
|
||
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
/**SDL_FreeSurface:释放不再需要的 SDL_Surface。
|
||
SDL_DestroyTexture、SDL_DestroyRenderer 和 SDL_DestroyWindow:销毁纹理、渲染器和窗口。**/
|