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(svn r17899) -Codechange: Deduplicate code for refitting vehicles.

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frosch
2009-10-28 21:09:37 +00:00
parent d01f5e9e7e
commit 00aca63b48
7 changed files with 106 additions and 186 deletions
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87
src/vehicle_cmd.cpp
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@@ -256,6 +256,93 @@ CommandCost CmdDepotMassAutoReplace(TileIndex tile, DoCommandFlag flags, uint32
return cost;
}
/** Learn the price of refitting a certain engine
* @param engine_type Which engine to refit
* @return Price for refitting
*/
static CommandCost GetRefitCost(EngineID engine_type)
{
Money base_cost;
ExpensesType expense_type;
const Engine *e = Engine::Get(engine_type);
switch (e->type) {
case VEH_SHIP:
base_cost = _price.ship_base;
expense_type = EXPENSES_SHIP_RUN;
break;
case VEH_ROAD:
base_cost = _price.roadveh_base;
expense_type = EXPENSES_ROADVEH_RUN;
break;
case VEH_AIRCRAFT:
base_cost = _price.aircraft_base;
expense_type = EXPENSES_AIRCRAFT_RUN;
break;
case VEH_TRAIN:
base_cost = 2 * ((e->u.rail.railveh_type == RAILVEH_WAGON) ?
_price.build_railwagon : _price.build_railvehicle);
expense_type = EXPENSES_TRAIN_RUN;
break;
default: NOT_REACHED();
}
return CommandCost(expense_type, (e->info.refit_cost * base_cost) >> 10);
}
/**
* Refits a vehicle (chain).
* This is the vehicle-type independent part of the CmdRefitXXX functions.
* @param v The vehicle to refit.
* @param only_this Whether to only refit this vehicle, or the whole chain.
* @param new_cid Cargotype to refit to
* @param new_subtype Cargo subtype to refit to
* @param flags Command flags
* @return refit cost; or CMD_ERROR if no vehicle was actually refitable to the cargo
*/
CommandCost RefitVehicle(Vehicle *v, bool only_this, CargoID new_cid, byte new_subtype, DoCommandFlag flags)
{
CommandCost cost(v->GetExpenseType(false));
uint total_capacity = 0;
bool success = false;
v->InvalidateNewGRFCacheOfChain();
for (; v != NULL; v = (only_this ? NULL : v->Next())) {
const Engine *e = Engine::Get(v->engine_type);
if (!e->CanCarryCargo() || !HasBit(e->info.refit_mask, new_cid)) continue;
success = true;
/* Back up the vehicle's cargo type */
CargoID temp_cid = v->cargo_type;
byte temp_subtype = v->cargo_subtype;
v->cargo_type = new_cid;
v->cargo_subtype = new_subtype;
uint amount = GetVehicleCapacity(v);
total_capacity += amount;
/* Restore the original cargo type */
v->cargo_type = temp_cid;
v->cargo_subtype = temp_subtype;
if (new_cid != v->cargo_type) {
cost.AddCost(GetRefitCost(v->engine_type));
}
if (flags & DC_EXEC) {
v->cargo.Truncate((v->cargo_type == new_cid) ? amount : 0);
v->cargo_type = new_cid;
v->cargo_cap = amount;
v->cargo_subtype = new_subtype;
}
}
_returned_refit_capacity = total_capacity;
return success ? cost : CMD_ERROR;
}
/** Test if a name is unique among vehicle names.
* @param name Name to test.
* @return True ifffffff the name is unique.