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#include "datafun.h"
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <SDL/SDL_image.h>
char *data_dir;
char *get_data_dir(void) {
char buf[4096];
buf[sizeof(buf) - 1] = 0;
// Where are the images datafile?
// default: ./data
// second alternative: ROCK_DODGERS_DATADIR
// final alternative: @datadir@/@PACKAGENAME@
strcpy(buf, "./data");
if(missing(buf)) {
char *env;
env = getenv("ROCK_DODGERS_DATA");
if(env != NULL) {
strncpy(buf, env, sizeof(buf) - 1);
if(missing(buf)) {
fprintf(stderr, "Cannot find data directory $ROCK_DODGERS_DATADIR\n");
exit(-1);
}
} else {
snprintf(buf, sizeof(buf) - 1, "%s/%s", DATADIR, PACKAGENAME);
if(missing(buf)) {
fprintf(stderr, "Cannot find data in %s\n", buf);
exit(-2);
}
}
}
return strdup(buf);
}
char *load_file(const char *s) {
static char retval[1024];
snprintf(retval, sizeof(retval), "%s/%s", data_dir, s);
retval[sizeof(retval) - 1] = '\0';
return retval;
}
const char *load_file_dir(const char *dir, const char *name) {
static char retval[4096];
snprintf(retval, sizeof(retval), "%s/%s/%s", data_dir, dir, name);
retval[sizeof(retval) - 1] = '\0';
return retval;
}
SDL_Surface *load_image(const char *fname, short kr, short kg, short kb) {
SDL_Surface *temp;
SDL_Surface *surf = IMG_Load(load_file_dir("images", fname));
if(surf != NULL) {
if(kr >= 0 && kg >= 0 && kb >= 0) {
RD_VIDEO_TYPE key =
(RD_VIDEO_TYPE) SDL_MapRGB(surf->format, kr, kg, kb);
SDL_SetColorKey(surf, SDL_SRCCOLORKEY | SDL_RLEACCEL, key);
}
temp = surf;
surf = SDL_DisplayFormat(temp);
SDL_FreeSurface(temp);
}
return surf;
}
int missing(const char *dirname) {
struct stat buf;
lstat(dirname, &buf);
return (!S_ISDIR(buf.st_mode));
}
sdl_surfaces_t *load_images_ck(const char *fname, short kr, short kg, short kb) {
unsigned short int i, j;
char name[256];
SDL_Surface *tmpsurf[1<<16]; //Maximum!
sdl_surfaces_t *surfaces;
for(i = 0; i < (1<<16) - 1; i++) {
snprintf(name, sizeof(name), fname, i);
if((tmpsurf[i] = load_image(name, kr, kg, kb)) == NULL) {
if(i == 0) {
return NULL;
} /* maybe later: fill up to n with first image... see greeeblies */
break;
} else {
printf("\tImage '%s' was loaded.\n", name);
}
}
if(i == (1<<16) - 1) return NULL; //That many images???
surfaces = malloc(sizeof(struct sdl_surfaces));
if(surfaces != NULL) {
surfaces->num_surfaces = i;
if( (surfaces->surfaces = calloc(i, sizeof(SDL_Surface*))) == NULL)
return NULL;
surfaces->surfaces_end = surfaces->surfaces + i;
for(j = 0; j < i; ++j)
*(surfaces->surfaces + j) = tmpsurf[j];
}
return surfaces;
}
void destroy_sdl_surfaces(sdl_surfaces_t *surfaces) {
SDL_Surface **ptr;
for(ptr = surfaces->surfaces; ptr < surfaces->surfaces_end; ++ptr) {
SDL_FreeSurface(*ptr);
}
//Free array of surface pointers.
free(surfaces->surfaces);
memset(surfaces, 0, sizeof(*surfaces));
//Free the surfaces
free(surfaces);
}
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