Robot

robot.c

void move_robot(int direction);
int pick(void);
void put(void);

#define SIZE 1000

enum { LEFT, RIGHT, UP, DOWN };
enum { NOTHING, TREASURE, BOMB };

static int current_x;
static int current_y;

void move_to(int x, int y) {
    while (current_x < x) { move_robot(RIGHT); current_x++; }
    while (current_x > x) { move_robot(LEFT); current_x--; }
    while (current_y > y) { move_robot(DOWN); current_y++; }
    while (current_y < y) { move_robot(UP); current_y--; }
}

void move_to_home(void) {
    move_to(0, 0);
}

void move_to_trash(void) {
    move_to(SIZE - 1, SIZE - 1);
}

void run_test(void) {
    int x, y, object;
    for (y = 0; y < SIZE; y++) {
        for (x = 0; x < SIZE; x++) {
            move_to(x, y);
            object = pick();
            switch (object) {
            case TREASURE:
                move_to_home();
                put();
                break;
            case BOMB:
                move_to_trash();
                put();
                break;
            }
        }
    }
}