diff options
Diffstat (limited to 'src/company_cmd.cpp')
-rw-r--r-- | src/company_cmd.cpp | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/src/company_cmd.cpp b/src/company_cmd.cpp index 44993becc..92e3c0d96 100644 --- a/src/company_cmd.cpp +++ b/src/company_cmd.cpp @@ -210,6 +210,12 @@ void SubtractMoneyFromCompanyFract(CompanyID company, CommandCost cst) if (cost != 0) SubtractMoneyFromAnyCompany(c, CommandCost(cst.GetExpensesType(), cost)); } +/** + * Set the right DParams to get the name of an owner. + * @param owner the owner to get the name of. + * @param tile optional tile to get the right town. + * @pre if tile == 0, then owner can't be OWNER_TOWN. + */ void GetNameOfOwner(Owner owner, TileIndex tile) { SetDParam(2, owner); @@ -222,6 +228,7 @@ void GetNameOfOwner(Owner owner, TileIndex tile) SetDParam(1, owner); } } else { + assert(tile != 0); const Town *t = ClosestTownFromTile(tile, UINT_MAX); SetDParam(0, STR_TOWN_NAME); @@ -230,16 +237,32 @@ void GetNameOfOwner(Owner owner, TileIndex tile) } -bool CheckOwnership(Owner owner) +/** + * Check whether the current owner owns something. + * If that isn't the case an appropriate error will be given. + * @param owner the owner of the thing to check. + * @param tile optional tile to get the right town. + * @pre if tile == 0 then the owner can't be OWNER_TOWN. + * @return true iff it's owned by the current company. + */ +bool CheckOwnership(Owner owner, TileIndex tile) { assert(owner < OWNER_END); + assert(owner != OWNER_TOWN || tile != 0); if (owner == _current_company) return true; _error_message = STR_ERROR_OWNED_BY; - GetNameOfOwner(owner, 0); + GetNameOfOwner(owner, tile); return false; } +/** + * Check whether the current owner owns the stuff on + * the given tile. If that isn't the case an + * appropriate error will be given. + * @param tile the tile to check. + * @return true iff it's owned by the current company. + */ bool CheckTileOwnership(TileIndex tile) { Owner owner = GetTileOwner(tile); |