Code:
#ifdef __cplusplus
#include <cstdlib>
#else
#include <stdlib.h>
#endif
#ifdef __APPLE__
#include <SDL/SDL.h>
#else
#include <SDL.h>
#endif
#include "lo/lo.h"
int img_x, img_y;
void error(int num, const char *m, const char *path);
int generic_handler(const char *path, const char *types, lo_arg **argv, int argc, void *data, void *user_data);
int main ( int argc, char** argv )
{
// liblo - OSC library
lo_server_thread st = lo_server_thread_new("8000", error);
lo_server_thread_add_method(st, NULL, NULL, generic_handler, NULL);
lo_server_thread_start(st);
// initialize SDL video
if ( SDL_Init( SDL_INIT_VIDEO ) < 0 )
{
printf( "Unable to init SDL: %s\n", SDL_GetError() );
return 1;
}
// make sure SDL cleans up before exit
atexit(SDL_Quit);
// create a new window
SDL_Surface* screen = SDL_SetVideoMode(640, 480, 16,
SDL_HWSURFACE|SDL_DOUBLEBUF);
if ( !screen )
{
printf("Unable to set 640x480 video: %s\n", SDL_GetError());
return 1;
}
// load an image
SDL_Surface* bmp = SDL_LoadBMP("cb.bmp");
if (!bmp)
{
printf("Unable to load bitmap: %s\n", SDL_GetError());
return 1;
}
// centre the bitmap on screen
SDL_Rect dstrect;
img_x = (screen->w - bmp->w) / 2;
img_y = (screen->h - bmp->h) / 2;
dstrect.x = img_x;
dstrect.y = img_y;
// program main loop
bool done = false;
while (!done)
{
// message processing loop
SDL_Event event;
while (SDL_PollEvent(&event))
{
// check for messages
switch (event.type)
{
// exit if the window is closed
case SDL_QUIT:
done = true;
break;
// check for keypresses
case SDL_KEYDOWN:
{
// exit if ESCAPE is pressed
if (event.key.keysym.sym == SDLK_ESCAPE){
done = true;
break;
}
if (event.key.keysym.sym == SDLK_RIGHT){
if(img_x<640-bmp->w){
img_x += 10;
}
break;
}
if (event.key.keysym.sym == SDLK_LEFT){
img_x -= 10;
break;
}
}
} // end switch
} // end of message processing
// DRAWING STARTS HERE
// clear screen
SDL_FillRect(screen, 0, SDL_MapRGB(screen->format, 255, 255, 255));
// draw bitmap
dstrect.x = img_x;
dstrect.y = img_y;
SDL_BlitSurface(bmp, 0, screen, &dstrect);
// DRAWING ENDS HERE
// finally, update the screen :)
SDL_Flip(screen);
} // end main loop
// free loaded bitmap
SDL_FreeSurface(bmp);
// all is well ;)
printf("Exited cleanly\n");
return 0;
}
void error(int num, const char *msg, const char *path)
{
printf("liblo server error %d in path %s: %s\n", num, path, msg);
}
int generic_handler(const char *path, const char *types, lo_arg **argv, int argc, void *data, void *user_data)
{
int accval_x = argv[0]->f*10;
int accval_y = argv[1]->f*10;
if(strcmp(path, "/accxyz")==0){
img_x += accval_x;
img_y -= accval_y;
}
return 1;
}
Thanks