rubidium@9511: /* $Id$ */
rubidium@9511: 
truebrain@9833: /** @file ai_sign.cpp Implementation of AISign. */
rubidium@9511: 
rubidium@9511: #include "ai_sign.hpp"
rubidium@9511: #include "table/strings.h"
rubidium@9723: #include "../../command_func.h"
rubidium@9723: #include "../../core/alloc_func.hpp"
rubidium@9837: #include "../../signs_base.h"
rubidium@9723: #include "../../strings_func.h"
glx@9800: #include "../../tile_map.h"
rubidium@9511: 
truebrain@9737: /* static */ SignID AISign::GetMaxSignID()
rubidium@9511: {
rubidium@9511: 	return ::GetMaxSignIndex();
rubidium@9511: }
rubidium@9511: 
truebrain@9737: /* static */ int32 AISign::GetSignCount()
rubidium@9511: {
rubidium@9511: 	return ::GetNumSigns();
rubidium@9511: }
rubidium@9511: 
rubidium@9511: /* static */ bool AISign::IsValidSign(SignID sign_id)
rubidium@9511: {
rubidium@9511: 	return ::IsValidSignID(sign_id);
rubidium@9511: }
rubidium@9511: 
truebrain@9737: /* static */ char *AISign::GetText(SignID sign_id)
rubidium@9511: {
truebrain@9736: 	if (!IsValidSign(sign_id)) return NULL;
rubidium@9511: 	static const int len = 64;
rubidium@9511: 	char *sign_name = MallocT<char>(len);
rubidium@9511: 
rubidium@9724: 	::SetDParam(0, sign_id);
rubidium@9724: 	::GetString(sign_name, STR_SIGN_NAME, &sign_name[len - 1]);
rubidium@9511: 
rubidium@9511: 	return sign_name;
rubidium@9511: }
rubidium@9511: 
truebrain@9737: /* static */ TileIndex AISign::GetLocation(SignID sign_id)
rubidium@9511: {
truebrain@9736: 	if (!IsValidSign(sign_id)) return INVALID_TILE;
rubidium@9511: 	const Sign *sign = ::GetSign(sign_id);
rubidium@9511: 	return ::TileVirtXY(sign->x, sign->y);
rubidium@9511: }
rubidium@9511: 
truebrain@9737: /* static */ bool AISign::RemoveSign(SignID sign_id)
rubidium@9511: {
rubidium@9511: 	_cmd_text = "";
truebrain@9737: 	return AIObject::DoCommand(0, sign_id, 0, CMD_RENAME_SIGN);
rubidium@9511: }
rubidium@9511: 
truebrain@9737: /* static */ SignID AISign::BuildSign(TileIndex location, const char *text)
rubidium@9511: {
rubidium@9511: 	if (!::IsValidTile(location)) return INVALID_SIGN;
rubidium@9511: 
truelight@9560: 	/* Reset the internal NewSignID in case we are in TestMode */
truelight@9560: 	AIObject::SetNewSignID(0);
truelight@9560: 
truebrain@9737: 	bool ret = AIObject::DoCommand(location, 0, 0, CMD_PLACE_SIGN);
truelight@9561: 	if (!ret) return INVALID_SIGN;
rubidium@9511: 
rubidium@9511: 	SignID new_sign_id = AIObject::GetNewSignID();
rubidium@9511: 	_cmd_text = text;
truebrain@9737: 	ret = AIObject::DoCommand(0, new_sign_id, 0, CMD_RENAME_SIGN);
truelight@9561: 	if (!ret) {
truebrain@9737: 		RemoveSign(new_sign_id);
rubidium@9511: 		return INVALID_SIGN;
rubidium@9511: 	}
rubidium@9511: 	return new_sign_id;
rubidium@9511: }