void xmlnode_addatt(struct xmlnode *node, char *att, char *attval)
{
struct keyval *kv;
kv = keyval_create();
keyval_setkey(kv, att);
keyval_setval(kv, attval);
plist_push(node->attributes, kv);
}
int main(void)
{
bool ret = true;
plist *cells = NULL;
window *win = NULL;
/* initialize random number generator */
srand(time(NULL));
/* initialize opengl window */
win = window_init("brownian tree", WINDOW_W, WINDOW_H, 32);
if (win == NULL) {
fprintf(stderr, "FATAL: %s\n", strerror(errno));
ret = false;
goto cleanup;
} else {
win->refresh = update_screen;
}
/* initialize opengl stuff */
glPointSize(POINTSIZE);
glHint(GL_POINT_SMOOTH_HINT, GL_NICEST);
glfwSetWindowSizeCallback(win->enable2d);
win->enable2d(WINDOW_W, WINDOW_H);
/* initialize cells list */
cells = plist_init(particle_init());
for (int i = 0; i < FREE_CELLS_NUMBER; i++) {
particle *pt = particle_init();
if (pt == NULL) {
fprintf(stderr, "FATAL: %s\n", strerror(errno));
ret = false;
goto cleanup;
}
pt->x = (GLfloat) randint((WINDOW_W - 1));
pt->y = (GLfloat) randint((WINDOW_H - 1));
if (!plist_push(cells, pt)) {
fprintf(stderr, "FATAL: %s\n", strerror(errno));
ret = false;
goto cleanup;
}
}
/* initialize 2D grid */
for (int y = 0; y < WINDOW_H; y++) {
for (int x = 0; x < WINDOW_W; x++) {
grid[y][x] = CELL_EMPTY;
}
}
/* initialize random freezed cells */
for (int i = 0; i < FREEZED_CELLS_NUMBER; i++) {
int y = randint(WINDOW_H - 1);
int x = (i * (WINDOW_W / FREEZED_CELLS_NUMBER))
+ (FREEZED_CELLS_NUMBER / 2);
grid[y][x] = CELL_FREEZED;
}
/* main loop */
do {
win->clear();
win->refresh(win, &cells);
move_cells(&cells);
} while (
glfwGetKey(GLFW_KEY_ESC) != GLFW_PRESS
&& glfwGetWindowParam(GLFW_OPENED)
);
goto cleanup;
cleanup:
/* free resources */
if (cells != NULL)
plist_free(cells);
if (win != NULL) {
window_quit();
window_free(win);
}
/* exit error */
if (!ret)
return EXIT_FAILURE;
return EXIT_SUCCESS;
}
void xmlnode_addchild(struct xmlnode *parent, struct xmlnode *child)
{
plist_push(parent->childs, child);
}
