mirror of https://github.com/OpenTTD/OpenTTD.git
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
/* $Id$ */
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/** @file ai_waypoint.cpp Implementation of AIWaypoint. */
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#include "ai_waypoint.hpp"
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#include "ai_rail.hpp"
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#include "../../command_func.h"
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#include "../../string_func.h"
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#include "../../strings_func.h"
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#include "../../company_func.h"
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#include "../../waypoint.h"
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#include "../../core/alloc_func.hpp"
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#include "table/strings.h"
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/* static */ bool AIWaypoint::IsValidWaypoint(WaypointID waypoint_id)
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{
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const Waypoint *wp = ::Waypoint::GetIfValid(waypoint_id);
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return wp != NULL && wp->owner == _current_company;
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}
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/* static */ WaypointID AIWaypoint::GetWaypointID(TileIndex tile)
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{
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if (!AIRail::IsRailWaypointTile(tile)) return WAYPOINT_INVALID;
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return ::GetStationIndex(tile);
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}
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/* static */ char *AIWaypoint::GetName(WaypointID waypoint_id)
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{
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if (!IsValidWaypoint(waypoint_id)) return NULL;
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static const int len = 64;
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char *waypoint_name = MallocT<char>(len);
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::SetDParam(0, waypoint_id);
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::GetString(waypoint_name, STR_WAYPOINT_NAME, &waypoint_name[len - 1]);
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return waypoint_name;
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}
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/* static */ bool AIWaypoint::SetName(WaypointID waypoint_id, const char *name)
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{
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EnforcePrecondition(false, IsValidWaypoint(waypoint_id));
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EnforcePrecondition(false, !::StrEmpty(name));
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EnforcePreconditionCustomError(false, ::strlen(name) < MAX_LENGTH_WAYPOINT_NAME_BYTES, AIError::ERR_PRECONDITION_STRING_TOO_LONG);
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return AIObject::DoCommand(0, waypoint_id, 0, CMD_RENAME_WAYPOINT, name);
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}
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/* static */ TileIndex AIWaypoint::GetLocation(WaypointID waypoint_id)
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{
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if (!IsValidWaypoint(waypoint_id)) return INVALID_TILE;
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return ::Waypoint::Get(waypoint_id)->xy;
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}
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