(svn r15519) -Add [NoAI]: support for waypoints by adding AIRail::Build/Remove RailWaypoint, AIWaypoint and AIWaypointList.

src/ai/api/ai_waypoint.cpp

@@ -0,0 +1,53 @@
+/* $Id$ */
+
+/** @file ai_waypoint.cpp Implementation of AIWaypoint. */
+
+#include "ai_waypoint.hpp"
+#include "ai_rail.hpp"
+#include "../../command_func.h"
+#include "../../string_func.h"
+#include "../../strings_func.h"
+#include "../../company_func.h"
+#include "../../waypoint.h"
+#include "../../core/alloc_func.hpp"
+#include "table/strings.h"
+
+/* static */ bool AIWaypoint::IsValidWaypoint(WaypointID waypoint_id)
+{
+	return ::IsValidWaypointID(waypoint_id) && ::GetWaypoint(waypoint_id)->owner == _current_company;
+}
+
+/* static */ WaypointID AIWaypoint::GetWaypointID(TileIndex tile)
+{
+	if (!AIRail::IsRailWaypointTile(tile)) return WAYPOINT_INVALID;
+
+	return ::GetWaypointIndex(tile);
+}
+
+/* static */ char *AIWaypoint::GetName(WaypointID waypoint_id)
+{
+	if (!IsValidWaypoint(waypoint_id)) return NULL;
+
+	static const int len = 64;
+	char *waypoint_name = MallocT<char>(len);
+
+	::SetDParam(0, waypoint_id);
+	::GetString(waypoint_name, STR_WAYPOINT_RAW, &waypoint_name[len - 1]);
+	return waypoint_name;
+}
+
+/* static */ bool AIWaypoint::SetName(WaypointID waypoint_id, const char *name)
+{
+	EnforcePrecondition(false, IsValidWaypoint(waypoint_id));
+	EnforcePrecondition(false, !::StrEmpty(name));
+	EnforcePreconditionCustomError(false, ::strlen(name) < MAX_LENGTH_WAYPOINT_NAME_BYTES, AIError::ERR_PRECONDITION_STRING_TOO_LONG);
+
+	return AIObject::DoCommand(0, waypoint_id, 0, CMD_RENAME_WAYPOINT, name);
+}
+
+/* static */ TileIndex AIWaypoint::GetLocation(WaypointID waypoint_id)
+{
+	if (!IsValidWaypoint(waypoint_id)) return INVALID_TILE;
+
+	return ::GetWaypoint(waypoint_id)->xy;
+}