rubidium@9511: /* $Id$ */
rubidium@9511: 
rubidium@9511: /** @file ai_sign.cpp handles all functions of the AISign class */
rubidium@9511: 
rubidium@9511: #include "ai_sign.hpp"
rubidium@9511: #include "table/strings.h"
rubidium@9511: #include "../../command.h"
rubidium@9599: #include "../../landscape.h"
rubidium@9511: #include "../../signs.h"
rubidium@9511: #include "../../strings.h"
rubidium@9511: #include "../../variables.h" /* For SetDParam */
rubidium@9511: 
rubidium@9511: SignID AISign::GetMaxSignID()
rubidium@9511: {
rubidium@9511: 	return ::GetMaxSignIndex();
rubidium@9511: }
rubidium@9511: 
rubidium@9511: 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: 
rubidium@9511: char *AISign::GetText(SignID sign_id)
rubidium@9511: {
rubidium@9511: 	if (!AISign::IsValidSign(sign_id)) return NULL;
rubidium@9511: 	static const int len = 64;
rubidium@9511: 	char *sign_name = MallocT<char>(len);
rubidium@9511: 
rubidium@9511: 	::GetString(sign_name, ::GetSign(sign_id)->str, &sign_name[len - 1]);
rubidium@9511: 
rubidium@9511: 	return sign_name;
rubidium@9511: }
rubidium@9511: 
rubidium@9511: TileIndex AISign::GetLocation(SignID sign_id)
rubidium@9511: {
rubidium@9511: 	if (!AISign::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: 
rubidium@9511: bool AISign::RemoveSign(SignID sign_id)
rubidium@9511: {
rubidium@9511: 	_cmd_text = "";
rubidium@9511: 	return this->DoCommand(0, sign_id, 0, CMD_RENAME_SIGN);
rubidium@9511: }
rubidium@9511: 
rubidium@9511: 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: 
truelight@9561: 	bool ret = this->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;
truelight@9561: 	ret = this->DoCommand(0, new_sign_id, 0, CMD_RENAME_SIGN);
truelight@9561: 	if (!ret) {
rubidium@9511: 		this->RemoveSign(new_sign_id);
rubidium@9511: 		return INVALID_SIGN;
rubidium@9511: 	}
rubidium@9511: 	return new_sign_id;
rubidium@9511: }