74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
/* $Id$ */
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/** @file ai_sign.cpp Implementation of AISign. */
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#include "ai_sign.hpp"
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#include "table/strings.h"
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#include "../ai_instance.hpp"
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#include "../../command_func.h"
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#include "../../core/alloc_func.hpp"
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#include "../../signs_base.h"
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#include "../../string_func.h"
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#include "../../strings_func.h"
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#include "../../tile_map.h"
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#include "../../company_func.h"
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/* static */ SignID AISign::GetMaxSignID()
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{
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return (SignID)::Sign::GetPoolSize();
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}
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/* static */ bool AISign::IsValidSign(SignID sign_id)
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{
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const Sign *si = ::Sign::GetIfValid(sign_id);
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return si != NULL && si->owner == _current_company;
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}
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/* static */ bool AISign::SetName(SignID sign_id, const char *name)
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{
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EnforcePrecondition(false, IsValidSign(sign_id));
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EnforcePrecondition(false, !::StrEmpty(name));
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EnforcePreconditionCustomError(false, ::strlen(name) < MAX_LENGTH_SIGN_NAME_BYTES, AIError::ERR_PRECONDITION_STRING_TOO_LONG);
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return AIObject::DoCommand(0, sign_id, 0, CMD_RENAME_SIGN, name);
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}
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/* static */ char *AISign::GetName(SignID sign_id)
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{
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if (!IsValidSign(sign_id)) return NULL;
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static const int len = 64;
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char *sign_name = MallocT<char>(len);
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::SetDParam(0, sign_id);
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::GetString(sign_name, STR_SIGN_NAME, &sign_name[len - 1]);
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return sign_name;
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}
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/* static */ TileIndex AISign::GetLocation(SignID sign_id)
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{
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if (!IsValidSign(sign_id)) return INVALID_TILE;
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const Sign *sign = ::Sign::Get(sign_id);
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return ::TileVirtXY(sign->x, sign->y);
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}
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/* static */ bool AISign::RemoveSign(SignID sign_id)
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{
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EnforcePrecondition(false, IsValidSign(sign_id));
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return AIObject::DoCommand(0, sign_id, 0, CMD_RENAME_SIGN, "");
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}
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/* static */ SignID AISign::BuildSign(TileIndex location, const char *text)
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{
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EnforcePrecondition(INVALID_SIGN, ::IsValidTile(location));
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EnforcePrecondition(INVALID_SIGN, !::StrEmpty(text));
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EnforcePreconditionCustomError(false, ::strlen(text) < MAX_LENGTH_SIGN_NAME_BYTES, AIError::ERR_PRECONDITION_STRING_TOO_LONG);
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if (!AIObject::DoCommand(location, 0, 0, CMD_PLACE_SIGN, text, &AIInstance::DoCommandReturnSignID)) return INVALID_SIGN;
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/* In case of test-mode, we return SignID 0 */
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return 0;
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}
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