/*
* from_truck: position of the truck where the order is
* to truck: truck to put the order
*/
bool
Optimize::swap_order(
const Order from_order,
Vehicle_pickDeliver &from_truck,
const Order to_order,
Vehicle_pickDeliver &to_truck) {
if (!from_truck.has_order(from_order)
|| !to_truck.has_order(to_order)) {
return false;
}
pgassert(from_truck.has_order(from_order));
pgassert(to_truck.has_order(to_order));
from_truck.erase(from_order);
to_truck.erase(to_order);
from_truck.insert(to_order);
to_truck.insert(from_order);
pgassert(from_truck.has_order(to_order));
pgassert(to_truck.has_order(from_order));
return true;
}
/*
* from_truck: position of the truck where the order is
* to truck: truck to put the order
*/
void
Optimize::swap_order(
const Order from_order,
Vehicle_pickDeliver &from_truck,
const Order to_order,
Vehicle_pickDeliver &to_truck) {
pgassert(from_truck.has_order(from_order));
pgassert(to_truck.has_order(to_order));
from_truck.erase(from_order);
to_truck.erase(to_order);
from_truck.insert(to_order);
to_truck.insert(from_order);
pgassert(from_truck.has_order(to_order));
pgassert(to_truck.has_order(from_order));
}
/*
* from_truck: position of the truck where the order is
* to truck: truck to put the order
*/
void
Optimize::move_order(
Order order,
Vehicle_pickDeliver &from_truck,
Vehicle_pickDeliver &to_truck) {
pgassert(from_truck.has_order(order));
pgassert(!to_truck.has_order(order));
from_truck.erase(order);
to_truck.insert(order);
pgassert(!from_truck.has_order(order));
pgassert(to_truck.has_order(order));
}
/*
* from_truck trying to make from_truck's duration smaller
* - maybe all orders can be moved
* - if that is the case, the from_truck could be removed
*
* Deleting an order on the from_truck
* - number of truck remains the same
* - from_truk duration() can not get larger
* - the overall duration can get larger
*
*/
bool
Optimize::move_reduce_cost(
Vehicle_pickDeliver &from,
Vehicle_pickDeliver &to) {
auto from_truck = from;
auto to_truck = to;
/*
* don't move from a real truck to a phoney truck
*/
if (!from_truck.is_phony() && to_truck.is_phony()) {
return false;
}
#if 0
from.id() > to.id()
? to : from;
#endif
size_t from_pos = 0;
size_t to_pos = 0;
for (; from_pos < fleet.size()
&& fleet[from_pos].idx() != from_truck.idx()
; ++from_pos) {
}
pgassert(from_pos < fleet.size());
for (; to_pos < fleet.size()
&& fleet[to_pos].idx() != to_truck.idx()
; ++to_pos) {
}
pgassert(to_pos < fleet.size());
auto moved = false;
auto from_orders = from_truck.orders_in_vehicle();
while (!from_orders.empty()) {
/*
* removing an order decreases the duration
*/
auto order = from_truck.orders()[from_orders.front()];
from_orders -= order.idx();
/*
* insert it in the "to" truck
*/
to_truck.insert(order);
if (to_truck.is_feasable()) {
msg.log
<< "\n Move order " << order.pickup().id()
<< " from truck " << from_truck.idx()
<< " to truck " << to_truck.idx();
#ifndef NDEBUG
msg.dbg_log << "\nMove before:";
msg.dbg_log << "\n" << fleet[to_pos].tau();
msg.dbg_log << "\n" << fleet[from_pos].tau();
#endif
#if 1
from_truck.erase(order);
#else
to_truck.insert(order);
move_order(order, fleet[from_pos], fleet[to_pos]);
#endif
moved = true;
save_if_best();
#ifndef NDEBUG
msg.dbg_log << "\nMove after:";
msg.dbg_log << "\n" << fleet[to_pos].tau();
msg.dbg_log << "\n" << fleet[from_pos].tau();
#endif
} else {
to_truck.erase(order);
}
}
return moved;
}
/*
* .. to ... from ....
*/
bool
Optimize::swap_worse(Vehicle_pickDeliver &to, Vehicle_pickDeliver &from) {
#if 0
pgassert(from.orders_in_vehicle().size() <= to.orders_in_vehicle().size());
#endif
auto from_truck = from;
auto to_truck = to;
auto swapped = false;
#if 0
auto best_from_order = from_truck.orders_in_vehicle().front();
auto best_to_order = to_truck.orders_in_vehicle().front();
#endif
for (auto from_orders = from_truck.orders_in_vehicle();
!from_orders.empty();
from_orders.pop_front()) {
auto from_order = from_truck.orders()[from_orders.front()];
#if 0
pgassert(from_truck.has_order(from_order));
msg.log << "\n" << from_orders;
msg.log << "\n from " << from_order.idx()
<< "," << from_order.pickup().original_id();
pgassert(from_truck.has_order(from_order));
#endif
auto curr_from_duration = from_truck.duration();
pgassert(from_truck.has_order(from_order));
for (auto to_orders = to_truck.orders_in_vehicle();
!to_orders.empty();
to_orders.pop_front()) {
pgassert(from_truck.has_order(from_order));
auto to_order = to.orders()[to_orders.front()];
#if 0
msg.log << "\n" << to_orders;
msg.log << "\n To " << to_order.idx();
#endif
auto curr_to_duration = to_truck.duration();
/*
* delete from_order, and to order from their trucks
*/
#if 0
pgassert(from_truck.has_order(from_order));
msg.log << "\n" << from_truck.tau();
msg.log << "\n" << from_order.idx();
pgassert(from_truck.has_order(from_order));
#endif
from_truck.erase(from_order);
to_truck.erase(to_order);
/*
* insert them in the other truck
*/
from_truck.insert(to_order);
to_truck.insert(from_order);
if (from_truck.is_feasable() && to_truck.is_feasable()) {
/*
* Can swap but:
* - only swap when the total duration is reduced
* - or from_truck duration is reduced
*/
#if 0
msg.log << "\n Can swap";
msg.log << "\n Curr_from_duration " << curr_from_duration;
msg.log << " Curr_to_duration " << curr_to_duration;
msg.log << "\n new_from_duration "
<< from_truck.duration();
msg.log << " new_to_duration " << to_truck.duration();
#endif
auto estimated_delta =
- (curr_from_duration + curr_to_duration)
+ (to_truck.duration() + from_truck.duration());
#if 1
auto estimated_duration = duration() + estimated_delta;
if (from_truck.duration() < curr_from_duration ||
estimated_delta < 0 ||
estimated_duration < best_solution.duration()) {
#endif
msg.log
<< "\n Found Swap order "
<< from_order.pickup().id()
<< " from truck " << from_truck.idx()
<< " with order " << to_order.pickup().id()
<< " of truck " << to_truck.idx();
swapped = true;
#if 0
best_to_order = to_order.idx();
best_from_order = from_order.idx();
#endif
p_swaps.push(
Swap_info(
from,
to,
from_order.idx(),
to_order.idx(),
estimated_delta));
#if 1
}
#endif
}
to_truck = to;
from_truck = from;
}
from_truck = from;
}
return false && swapped;
}
