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Allow cloning trains directly from the template train list

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See: #312
This commit is contained in:
Jonathan G Rennison
2021-08-22 14:59:33 +01:00
parent a4c73e71c3
commit a026d82c6b
7 changed files with 88 additions and 0 deletions
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42
src/vehicle_cmd.cpp
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@@ -33,6 +33,7 @@
#include "core/random_func.hpp"
#include "tbtr_template_vehicle.h"
#include "tbtr_template_vehicle_func.h"
#include "scope.h"
#include <sstream>
#include <iomanip>
#include <cctype>
@@ -1537,6 +1538,47 @@ CommandCost CmdCloneVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint
return total_cost;
}
/**
* Clone a vehicle from a template.
* @param tile tile of the depot where the cloned vehicle is build
* @param flags type of operation
* @param p1 the original template vehicle's index
* @param p2 unused
* @param text unused
* @return the cost of this operation or an error
*/
CommandCost CmdCloneVehicleFromTemplate(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
TemplateVehicle* tv = TemplateVehicle::GetIfValid(p1);
if (tv == nullptr) {
return CMD_ERROR;
}
CommandCost ret = CheckOwnership(tv->owner);
if (ret.Failed()) return ret;
/* Vehicle construction needs random bits, so we have to save the random
* seeds to prevent desyncs. */
SavedRandomSeeds saved_seeds;
SaveRandomSeeds(&saved_seeds);
auto guard = scope_guard([&]() {
if (!(flags & DC_EXEC)) RestoreRandomSeeds(saved_seeds);
});
ret = DoCommand(0, tv->index, 0, DC_EXEC, CMD_VIRTUAL_TRAIN_FROM_TEMPLATE_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_BUY_TRAIN));
if (ret.Failed()) return ret;
Train* virt = Train::From(Vehicle::Get(_new_vehicle_id));
ret = DoCommand(tile, _new_vehicle_id, 0, flags, CMD_CLONE_VEHICLE | CMD_MSG(STR_ERROR_CAN_T_BUY_TRAIN));
delete virt;
return ret;
}
/**
* Send all vehicles of type to depots
* @param flags the flags used for DoCommand()