(svn r13317) -Codechange: make news messages use a linked list instead of a moving circular buffer. This makes it possible to store more news messages in the history. Based on a patch by Cirdan.
-Codechange: the number of news messages is reduced by removing every news message that is a configurable amount older than when it would not be shown in the newspaper popup/ticker, which is e.g. a month for industry production changes and half a year for subsidy offers. As a result the more important messages will stay longer in the message history (if longer than 30 messages).
/* $Id$ */
/** @file road_internal.h Functions used internally by the roads. */
#ifndef ROAD_INTERNAL_H
#define ROAD_INTERNAL_H
#include "tile_cmd.h"
/**
* Clean up unneccesary RoadBits of a planed tile.
* @param tile current tile
* @param org_rb planed RoadBits
* @return optimised RoadBits
*/
RoadBits CleanUpRoadBits(const TileIndex tile, RoadBits org_rb);
/**
* Is it allowed to remove the given road bits from the given tile?
* @param tile the tile to remove the road from
* @param remove the roadbits that are going to be removed
* @param owner the actual owner of the roadbits of the tile
* @param rt the road type to remove the bits from
* @param flags command flags
* @param town_check Shall the town rating checked/affected
* @return true when it is allowed to remove the road bits
*/
bool CheckAllowRemoveRoad(TileIndex tile, RoadBits remove, Owner owner, RoadType rt, uint32 flags, bool town_check = true);
/**
* Draw the catenary for tram road bits
* @param ti information about the tile (position, slope)
* @param tram the roadbits to draw the catenary for
*/
void DrawTramCatenary(const TileInfo *ti, RoadBits tram);
#endif /* ROAD_INTERNAL_H */