VC2005简单配置SDL环境
当老师第一节课说完这学期只教2D游戏相关知识我就重新定位了这门课程。混。同样给我定义为混的还有周一的资讯安全概论。但我混也是混得有原则的，作业还是自己做。
想到自己摆弄了GL一些日子了，SDL应该算是手到擒来了。首先下载SDL的相关开发库（包含H文件许53个，LIB文件6个，DLL文件14个）。进入对应的vc2005的安装目录。在路径vc/inlucde下新建SDL文件夹，拷贝头文件进入，同样，在vc/lib下拷贝LIB文件，然后进入c:/windows/system32里拷贝所有DLL。至此，环境就弄好了，然后在以后使用时记得include <SDL/SDL.h>或其他类似的文文件就好了。
下面是我第一个demo的代码。一看就懂的。我到现在也没看过SDL的语法，都是一些能顾名思义的函数名。比着自带的sample里的代码修改就OK了。
#include <SDL/SDL.h> #include <stdio.h> #include <stdlib.h> #include <string> //The attributes of the screen const int SCREEN_WIDTH = 640; const int SCREEN_HEIGHT = 480; const int SCREEN_BPP = 32; SDL_Surface *screen = NULL; SDL_Surface *background = NULL; SDL_Surface *object3 = NULL, *object2 = NULL; SDL_Surface *load_image( std::string filename ) { SDL_Surface* loadedImage = NULL; SDL_Surface* optimizedImage = NULL; loadedImage = SDL_LoadBMP( filename.c_str() ); if( loadedImage != NULL ) { optimizedImage = SDL_DisplayFormat( loadedImage ); SDL_FreeSurface( loadedImage ); } return optimizedImage; } void apply_surface( int x, int y, SDL_Surface* source, SDL_Surface* destination ) { SDL_Rect offset; offset.x = x; offset.y = y; SDL_BlitSurface( source, NULL, destination, &offset ); } int main ( int argc, char* argv[] ) { if((SDL_Init(SDL_INIT_VIDEO|SDL_INIT_AUDIO)==-1)) { printf("Could not initialize SDL: %s./n", SDL_GetError()); exit(EXIT_FAILURE); } screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, 0, SDL_HWSURFACE | SDL_ANYFORMAT); if (screen == NULL) { fprintf(stderr, "Couldn't set 640x480 video mode: %s/n", SDL_GetError()); exit(EXIT_FAILURE); } SDL_WM_SetCaption( "My First SDLDemo----Sink", NULL ); background = load_image( "001.bmp" ); apply_surface( 0, 0, background, screen ); object2 = load_image( "002.bmp" ); SDL_SetColorKey(object2, SDL_SRCCOLORKEY, SDL_MapRGB(object2->format, 0, 0, 0)); apply_surface(62, 112, object2, screen ); object3 = load_image( "003.bmp" ); SDL_SetColorKey(object3, 0, SDL_MapRGB(object3->format, 0, 0, 0)); apply_surface(332, 112, object3, screen ); #if 0 ball = load_image( "circle.bmp" ); SDL_SetColorKey(ball, SDL_SRCCOLORKEY, SDL_MapRGB(ball->format, 255, 0, 0)); SDL_SetAlpha(ball, SDL_SRCALPHA, 128); apply_surface( 192, 112, ball, screen ); #endif //Update the screen if( SDL_Flip( screen ) == -1 ) { return 1; } //Wait 5 seconds SDL_Delay( 10000 ); /* Shutdown all subsystems */ SDL_Quit(); return EXIT_SUCCESS; }
（用到的图片自己随意弄就是了，001.BMP为640*480的就OK了。）