DARKGuy

#include <string>#include <iostream>#include <SDL/SDL.h>using namespace std;bool quit = false;int x=0;int y=0;int playerx=0;int playery=0;void drawpixel(SDL_Surface *screen, int x, int y, Uint8 R, Uint8 G, Uint8 B){  Uint32 color = SDL_MapRGB(screen->format, R, G, B);  switch (screen->format->BytesPerPixel)  {    case 1: // 8-bpp      {        Uint8 *bufp;        bufp = (Uint8 *)screen->pixels + y*screen->pitch + x;        *bufp = color;      }      break;    case 2: // 15-bpp or 16-bpp      {        Uint16 *bufp;        bufp = (Uint16 *)screen->pixels + y*screen->pitch/2 + x;        *bufp = color;      }      break;    case 3: // 24-bpp mode, usually not used      {        Uint8 *bufp;        bufp = (Uint8 *)screen->pixels + y*screen->pitch + x * 3;        if(SDL_BYTEORDER == SDL_LIL_ENDIAN)        {          bufp[0] = color;          bufp[1] = color >> 8;          bufp[2] = color >> 16;        } else {          bufp[2] = color;          bufp[1] = color >> 8;          bufp[0] = color >> 16;        }      }      break;    case 4: // 32-bpp      {        Uint32 *bufp;        bufp = (Uint32 *)screen->pixels + y*screen->pitch/4 + x;        *bufp = color;      }      break;  }} void drawplayer(SDL_Surface *screen){	for(int xx=0;xx<20;xx++){		for(int yy=0;yy<20;yy++){			drawpixel(screen,playerx+xx,playery+yy,255,255,255);		}	}}int main() {	SDL_Surface *screen;	if(SDL_Init(SDL_INIT_VIDEO) < 0 ){ return 1; }	if(!(screen = SDL_SetVideoMode(640, 480, 16, SDL_HWSURFACE))){	SDL_Quit();	return 1; }    while(!quit) {    	SDL_FillRect(screen,NULL,0x000000);    		SDL_PumpEvents();		Uint8 *keystate = SDL_GetKeyState(NULL);		if(keystate[SDLK_ESCAPE]){	quit = true; }		x=0;		y=0;		if(keystate[SDLK_UP]){ y=-1; }		if(keystate[SDLK_DOWN]){ y=1; }		if(keystate[SDLK_LEFT]){ x=-1; }		if(keystate[SDLK_RIGHT]){ x=1; }		if(keystate[SDLK_w]){ y=-1; }		if(keystate[SDLK_s]){ y=1; }		if(keystate[SDLK_a]){ x=-1; }		if(keystate[SDLK_d]){ x=1; }				playerx = playerx + x;		playery = playery + y;				drawplayer(screen);				SDL_Flip(screen);		SDL_Delay(1);    }        return(1);}