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Location: cpp/openttd-patchpack/source/src/ai/api/ai_sign.cpp - annotation
r15577:a61e44bed2f3
2.6 KiB
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(svn r20247) -Fix: when it is known the loading an old savegame is going to fail, bail out immediately (using an exception) instead of going on until e.g. the expected number of byte is read
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/*
* 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;
}
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