int get_walkable_cells(struct world **world, int *possibilities, int n_possibilities, int *walkable_cells, int types_to_exclude) {
int i;
int found = 0;
struct world cell;
int row, col;
for (i = 0; i < n_possibilities; ++i) {
get_world_coordinates(possibilities[i], &row, &col);
cell = world[row][col];
if(!(cell.type & types_to_exclude)) {
walkable_cells[found++] = cell_number(row, col);
}
}
return found;
}
/*
* get_adjacents: Return the number possible adjacent positions
* of a given position (row, col)
* adjacents: array with the cell numbers of all
* adjacent positions
*/
int get_adjacents(int row, int col, int *adjacents) {
int found = 0;
/*Has up adjacent cell?*/
if(row > 0) {
adjacents[found++] = cell_number(row - 1, col);
}
/*Has right adjacent cell?*/
if(col < max_size - 1) {
adjacents[found++] = cell_number(row, col + 1);
}
/*Has down adjacent cell?*/
if(row < max_size - 1) {
adjacents[found++] = cell_number(row + 1, col);
}
/*Has left adjacent cell?*/
if(col > 0) {
adjacents[found++] = cell_number(row, col - 1);
}
return found;
}
/*
* get_cells_with_squirrels: Return the number of the cells
* in possibilities with squirres
* squirriles: Array with cell numbers of cells that have squirrels
*/
int get_cells_with_squirrels(struct world **world, int *possibilities, int n_possibilities, int *squirrels) {
int i;
int found = 0;
struct world cell;
int row, col;
for (i = 0; i < n_possibilities; ++i)
{
get_world_coordinates(possibilities[i], &row, &col);
cell = world[row][col];
if(cell.type == SQUIRREL) {
squirrels[found] = cell_number(row, col);
found++;
}
}
return found;
}
int main()
{
int gen = 1;
FILE *fp;
if ((fp = fopen("cells.txt", "w")) == NULL) {
fprintf(stderr, "error: cannot open a file.\n");
return 1;
}
init_cells();
print_cells(fp);
while (1) {
printf("gen = %d\n", gen++);
cell_number();
update_cells();
print_cells(fp);
}
fclose(fp);
}
/*
* choose_position: Apply the rule to choose a position
* even when we have more than one to choose
*/
inline int choose_position(int row, int col, int p) {
int c = cell_number(row, col);
return c % p;
}
