hashmap *hm_create(hm_compare compare, hm_hash hash){
hashmap *map = calloc(1, sizeof(hashmap));
check_mem(map);
map->compare = (compare == NULL ? default_compare : compare);
map->hash = (hash == NULL ? default_hash : hash);
map->slots = DynArray_create(sizeof(DynArray *), DEFAULT_SLOT_NUM);
map->slots->end = map->slots->max;
check_mem(map->slots);
return map;
error:
if(map)
hm_destroy(map);
return NULL;
}
int main(int ac, char **av) {
////
// Width, height
////
int width = 600;
int height = 600;
////
// Random generator init
////
srand((unsigned) time(0));
////
// Alloc
////
vec3_field
*vf0 = v3f_random_unit(3, 4, 2),
*vf1 = v3f_random_unit(6, 5, 2),
*vf2 = v3f_random_unit(8, 11, 2),
*vf3 = v3f_random_unit(19, 21, 2);
heightmap
*hm0 = hm_perlin_noise(width, height, vf0, 0.5),
*hm1 = hm_perlin_noise(width, height, vf1, 0.5),
*hm2 = hm_perlin_noise(width, height, vf2, 0.5),
*hm3 = hm_perlin_noise(width, height, vf3, 0.5);
heightmap
*hm = hm_new(width, height);
////
// Process
////
hm_add_scale(hm, hm0, 0.50);
hm_add_scale(hm, hm1, 0.25);
hm_add_scale(hm, hm2, 0.15);
hm_add_scale(hm, hm3, 0.10);
////
// SDL TIME! FREE BEERS FOR EVERYONE AND THEIR DOG!
// (though, you're the one paying, okay?)
////
if(SDL_Init(SDL_INIT_EVERYTHING) < 0) {
printf("Error: SDL can't init.");
return -1;
}
SDL_Surface *surface;
int running = 1;
SDL_Event evt;
surface = SDL_SetVideoMode(width, height, 32, SDL_HWSURFACE | SDL_DOUBLEBUF);
if(surface == NULL) {
printf("Error: Can't set video mode.");
return -1;
}
SDL_WM_SetCaption("Perlin noise test", NULL);
while(running) {
while(SDL_PollEvent(&evt)) {
if(evt.type == SDL_QUIT) {
running = 0;
}
}
for(int y = 0; y < height; y++) for(int x = 0; x < width; x++) {
Uint8 *pixel = (Uint8 *) surface->pixels + y * surface->pitch + x * 4;
*(Uint32 *) pixel = to_pixel(surface->format, hm_get(hm, x, y));
}
SDL_Flip(surface);
}
SDL_Quit();
////
// Dealloc
////
v3f_destroy(vf0);
v3f_destroy(vf1);
v3f_destroy(vf2);
v3f_destroy(vf3);
hm_destroy(hm0);
hm_destroy(hm1);
hm_destroy(hm2);
hm_destroy(hm3);
hm_destroy(hm);
}
