/* $Id$ */ /* * This file is part of OpenTTD. * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>. */ /** @file ai_sign.cpp Implementation of AISign. */ #include "ai_sign.hpp" #include "table/strings.h" #include "../ai_instance.hpp" #include "../../command_func.h" #include "../../core/alloc_func.hpp" #include "../../signs_base.h" #include "../../string_func.h" #include "../../strings_func.h" #include "../../tile_map.h" #include "../../company_func.h" /* static */ bool AISign::IsValidSign(SignID sign_id) { const Sign *si = ::Sign::GetIfValid(sign_id); return si != NULL && si->owner == _current_company; } /* static */ bool AISign::SetName(SignID sign_id, const char *name) { EnforcePrecondition(false, IsValidSign(sign_id)); EnforcePrecondition(false, !::StrEmpty(name)); EnforcePreconditionCustomError(false, ::strlen(name) < MAX_LENGTH_SIGN_NAME_BYTES, AIError::ERR_PRECONDITION_STRING_TOO_LONG); return AIObject::DoCommand(0, sign_id, 0, CMD_RENAME_SIGN, name); } /* static */ char *AISign::GetName(SignID sign_id) { if (!IsValidSign(sign_id)) return NULL; static const int len = 64; char *sign_name = MallocT<char>(len); ::SetDParam(0, sign_id); ::GetString(sign_name, STR_SIGN_NAME, &sign_name[len - 1]); return sign_name; } /* static */ TileIndex AISign::GetLocation(SignID sign_id) { if (!IsValidSign(sign_id)) return INVALID_TILE; const Sign *sign = ::Sign::Get(sign_id); return ::TileVirtXY(sign->x, sign->y); } /* static */ bool AISign::RemoveSign(SignID sign_id) { EnforcePrecondition(false, IsValidSign(sign_id)); return AIObject::DoCommand(0, sign_id, 0, CMD_RENAME_SIGN, ""); } /* static */ SignID AISign::BuildSign(TileIndex location, const char *text) { EnforcePrecondition(INVALID_SIGN, ::IsValidTile(location)); EnforcePrecondition(INVALID_SIGN, !::StrEmpty(text)); EnforcePreconditionCustomError(false, ::strlen(text) < MAX_LENGTH_SIGN_NAME_BYTES, AIError::ERR_PRECONDITION_STRING_TOO_LONG); if (!AIObject::DoCommand(location, 0, 0, CMD_PLACE_SIGN, text, &AIInstance::DoCommandReturnSignID)) return INVALID_SIGN; /* In case of test-mode, we return SignID 0 */ return 0; }