Ubuntu-14.04.3下SDL2测试

最近突然蛋痛想入门Linux，想写个跨平台的游戏，各种坑，备忘，稍微记点笔记。

主要参考这个文章

http://www.libsdl.org/release/SDL2-2.0.3.zip

解压后

./configure
make
sudo make install

检查

头文件：cd /usr/local/include/SDL2

库位置：cd /usr/local/lib

加入环境变量中

sudo vim /etc/ld.so.conf #修改系统共享库搜索路径

在第一行增加

include /usr/local/lib

再运行命令：

sudo ldconfig

CodeBlocks中测试Hello world

 1 #include <iostream>
 2 #include <SDL2/SDL.h>
 3 
 4 #define WIDTH 640
 5 #define HEIGHT 480
 6 #define BPP 4
 7 #define DEPTH 32
 8 
 9 using namespace std;
10 
11 int main(int argc, char* argv[])
12 {
13     SDL_Surface *screen;
14     SDL_Event event;
15 
16     int keypress = 0;
17     int h = 0;
18 
19     if (SDL_Init(SDL_INIT_EVERYTHING) == -1 ) {
20         cout << "error: " << SDL_GetError() << endl;
21         return 1;
22     }
23     
24     SDL_Window* window = SDL_CreateWindow("hello", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 640, 480, SDL_WINDOW_SHOWN);
25     if (window == NULL){
26         cout << "Error: " << SDL_GetError() << endl;
27         return 1;
28     }
29     SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
30     if (renderer == NULL){
31         cout << "Error: " << SDL_GetError() << endl;
32         return 1;
33     }
34 
35     SDL_Surface* surface = SDL_LoadBMP("bk.bmp");
36     SDL_Texture* texture = SDL_CreateTextureFromSurface(renderer, surface);
37     SDL_FreeSurface(surface);
38     
39     SDL_RenderClear(renderer);                  //清除屏幕
40     SDL_RenderCopy(renderer, texture, 0, 0);    //把texture画到renderer上
41     SDL_RenderPresent(renderer);
42 
43     while(!keypress)
44     {
45         //DrawScreen(screen, h++);
46         while(SDL_PollEvent(&event))
47         {
48             switch (event.type)
49             {
50                 case SDL_QUIT:
51                     keypress = 1;
52                     break;
53                 case SDL_KEYDOWN:
54                     keypress = 1;
55                     break;
56             }
57         }
58     }
59 
60     SDL_Quit();
61     return 0;
62 }

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