diff options
| -rw-r--r-- | vehicle.c | 10 |
1 files changed, 10 insertions, 0 deletions
@@ -1415,8 +1415,18 @@ int32 CmdReplaceVehicle(int x, int y, uint32 flags, uint32 p1, uint32 p2) SET_EXPENSES_TYPE(EXPENSES_NEW_VEHICLES); + + // first we make sure that it's a valid type the user requested + // check that it's an engine that is in the engine array + if (new_engine_type >= TOTAL_NUM_ENGINES ) return CMD_ERROR; + + // check that the new vehicle type is the same as the original one if (v->type != _engines[new_engine_type].type) return CMD_ERROR; + // check that it's the vehicle's owner that requested the replace + if (!CheckOwnership(v->owner)) return CMD_ERROR; + + switch (v->type) { case VEH_Train: build_cost = EstimateTrainCost(RailVehInfo(new_engine_type)); break; case VEH_Road: build_cost = EstimateRoadVehCost(new_engine_type); break; |