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rubidium

(svn r11433) -Fix: starting OpenTTD with DOS files made it look weird out of the box.
-Change: make extra sprites (the ones not in the TTD GRFs) replaceable using Action 5.
-Feature: make replacing contiguous subsets of sprites in for some types possible in Action 5.
Note to GRF authors: when you replaced OpenTTD sprites that are not from the TTD GRF files using Action A, your GRF will not have the intended result anymore as the sprite numbers have changed. You should replace the Action A with an Action 5 from now on.

/* $Id$ */

/** @file waypoint.h */

#ifndef WAYPOINT_H
#define WAYPOINT_H

#include "oldpool.h"
#include "rail_map.h"

struct Waypoint;
DECLARE_OLD_POOL(Waypoint, Waypoint, 3, 8000)

struct Waypoint : PoolItem<Waypoint, WaypointID, &_Waypoint_pool> {
	TileIndex xy;      ///< Tile of waypoint

	TownID town_index; ///< Town associated with the waypoint
	byte town_cn;      ///< The Nth waypoint for this town (consecutive number)
	StringID string;   ///< If this is zero (i.e. no custom name), town + town_cn is used for naming

	ViewportSign sign; ///< Dimensions of sign (not saved)
	Date build_date;   ///< Date of construction

	byte stat_id;      ///< ID of waypoint within the waypoint class (not saved)
	uint32 grfid;      ///< ID of GRF file
	byte localidx;     ///< Index of station within GRF file

	byte deleted;      ///< Delete counter. If greater than 0 then it is decremented until it reaches 0; the waypoint is then is deleted.

	Waypoint(TileIndex tile = 0);
	~Waypoint();

	inline bool IsValid() const { return this->xy != 0; }
};

static inline bool IsValidWaypointID(WaypointID index)
{
	return index < GetWaypointPoolSize() && GetWaypoint(index)->IsValid();
}

static inline void DeleteWaypoint(Waypoint *wp)
{
	wp->~Waypoint();
}

#define FOR_ALL_WAYPOINTS_FROM(wp, start) for (wp = GetWaypoint(start); wp != NULL; wp = (wp->index + 1U < GetWaypointPoolSize()) ? GetWaypoint(wp->index + 1U) : NULL) if (wp->IsValid())
#define FOR_ALL_WAYPOINTS(wp) FOR_ALL_WAYPOINTS_FROM(wp, 0)


/**
 * Fetch a waypoint by tile
 * @param tile Tile of waypoint
 * @return Waypoint
 */
static inline Waypoint *GetWaypointByTile(TileIndex tile)
{
	assert(IsTileType(tile, MP_RAILWAY) && IsRailWaypoint(tile));
	return GetWaypoint(GetWaypointIndex(tile));
}

CommandCost RemoveTrainWaypoint(TileIndex tile, uint32 flags, bool justremove);
Station *ComposeWaypointStation(TileIndex tile);
void ShowRenameWaypointWindow(const Waypoint *cp);
void DrawWaypointSprite(int x, int y, int stat_id, RailType railtype);
void FixOldWaypoints();
void UpdateAllWaypointSigns();
void AfterLoadWaypoints();

#endif /* WAYPOINT_H */