/* enter_floor: makes a person with id id stand at floor floor */
static void enter_floor(
lift_type lift, int id, int floor)
{
int i;
int floor_index;
int found;
/* stand at floor */
found = 0;
for (i = 0; i < MAX_N_PERSONS && !found; i++)
{
if (lift->persons_to_enter[floor][i].id == NO_ID)
{
found = 1;
floor_index = i;
}
}
if (!found)
{
lift_panic("cannot enter floor");
}
/* enter floor at index floor_index */
lift->persons_to_enter[floor][floor_index].id = id;
lift->persons_to_enter[floor][floor_index].to_floor = NO_FLOOR;
}
/* leave_floor: makes a person with id id at enter_floor leave
enter_floor */
static void leave_floor(lift_type lift, int id, int enter_floor)
/* fig_end lift_c_prot */
{
int i;
int floor_index;
int found;
/* leave the floor */
found = 0;
for (i = 0; i < MAX_N_PERSONS && !found; i++)
{
if (lift->persons_to_enter[enter_floor][i].id == id)
{
found = 1;
floor_index = i;
}
}
if (!found)
{
lift_panic("cannot leave floor");
}
/* leave floor at index floor_index */
lift->persons_to_enter[enter_floor][floor_index].id = NO_ID;
lift->persons_to_enter[enter_floor][floor_index].to_floor = NO_FLOOR;
}
static void exit_lift(lift_type lift, int id){
int i;
int sucess = 0;
for(i=0; i < MAX_N_PASSENGERS; i++){
if(lift->passengers_in_lift[i].id == id){
lift->passengers_in_lift[i].id = NO_ID;
lift->passengers_in_lift[i].to_floor = NO_FLOOR;
sucess = 1;
break;
}
}
if(!sucess){lift_panic("Could not exit lift!");}
}
static void enter_lift(lift_type lift, int id, int destination_floor)
{
int i;
int sucess = 0;
for(i = 0; i < MAX_N_PASSENGERS; i++){
if(lift->passengers_in_lift[i].id == NO_ID){
lift->passengers_in_lift[i].id = id;
lift->passengers_in_lift[i].to_floor = destination_floor;
sucess = 1;
break;
}
}
if(!sucess){lift_panic("Could not enter lift!");}
}
int leave_lift(lift_type lift, int id, int to_floor) {
int found = 0;
int my_lift_index = 0;
int i;
/* where am I? */
for (i = 0; i < MAX_N_PASSENGERS && !found; i++) {
if (lift->passengers_in_lift[i].id == id ) {
found = 1;
my_lift_index = i;
}
}
if (!found) {
lift_panic("I'm not in the lift! I'm looost!");
return 0;
}
// Move person out of el systemo
lift->passengers_in_lift[my_lift_index].id = NO_ID;
lift->passengers_in_lift[my_lift_index].to_floor = NO_FLOOR;
return 1;
}
