bool terrain_deinit ()
{
terrain_t *t;
for (t = terrain_list.next; t != &terrain_list; t = t->next)
terrain_del (t);
return true;
}
void map_gen (void) {
int i, j, k, l;
terrain_init ();
for (l = 0; l < arrlen (chunks); ++l)
for (i = 0; i < CHUNK_DX; ++i)
for (j = 0; j < CHUNK_DY; ++j)
for (k = 0; k < CHUNK_DZ; ++k)
chunks[l][i][j][k] = rng_f () < 0.05;
terrain_del ();
}
terrain_t *terrain_add (int x, int y, int z)
{
terrain_t *t;
/* kontrola, zda neexistuje teren na stejne pozici */
for (t = terrain_list.next; t != &terrain_list; t = t->next) {
if (t->origin_x == x && t->origin_y == y && t->origin_z == z) {
//printf ("teren: %d %d %d existuje!\n", x, y, z);
return 0;
}
}
t = (terrain_t *) calloc (sizeof (terrain_t), 1);
if (!t)
return NULL;
t->state = TERRAIN_STATE_ACTIVE;
t->vbo_id = 0;
t->origin_x = x;
t->origin_y = y;
t->origin_z = z;
t->dim_x = t->dim_y = t->dim_z = TERRAIN_DIM;
t->data = (voxel_t *) malloc (sizeof (voxel_t) * (t->dim_x+2) * (t->dim_y+2) * (t->dim_z+2));
if (!t->data) {
free (t);
return NULL;
}
/* pridame teren do seznamu jeste pred generovanim, abychom mohli generovat za behu */
t->next = &terrain_list;
t->prev = terrain_list.prev;
t->prev->next = t;
t->next->prev = t;
if (!terrain_gen (t)) {
terrain_del (t);
return NULL;
}
/* pripravime teren k vykresleni - polygonizujeme voxely */
gl_prepare_terrain (t);
//free (t->data);
//t->data = NULL;
return t;
}
void gl_render ()
{
fps_stick = SDL_GetTicks ();
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity ();
camera_update ();
/* Ziskame nasi kameru */
camera_t *c = camera_get ();
/* Vykreslovani SkyBoxu */
gl_render_skybox (c);
terrain_t *t;
for (t = terrain_list.next; t != &terrain_list; t = t->next) {
if (!t->gl_buf_len) {
/* mazani kontextu terenu z pameti */
terrain_t *tmp = t->prev;
if (terrain_del (t))
t = tmp;
continue;
}
gl_render_terrain (t, c);
}
/* Vykreslovani vody */
gl_water_render ();
/* Vykreslovani HUD/textu */
char sfps[32];
sprintf (sfps, "FPS: %.0f", 1.0f/(fps_dtick/1000.0f));
font_render (0.500, -0.400, sfps);
glFlush ();
/* Prohodi predni a zadni buffer */
SDL_GL_SwapWindow (g_window);
/* vypocitame hodnotu FPS na zaklade soucasneho casu a casu z predchoziho cyklu */
fps_dtick = SDL_GetTicks () - fps_stick;
/* Omezime shora FPS, protoze nam vyssi uz nic neprinese */
if (1000/FPS_MAX > fps_dtick)
SDL_Delay (1000.0f/FPS_MAX - fps_dtick);
}
/* Deinitialize World */
void world_del(struct World * self){
terrain_del(self->altitude);
climate_del(self->climate);
climate_del(self->evil);
mm_free(self);
}
