/* $Id: news.h 6045 2006-08-22 14:38:37Z rubidium $ */

#ifndef NEWS_H
#define NEWS_H

struct NewsItem {
	StringID string_id;
	uint16 duration;
	Date date;
	byte flags;
	byte display_mode;
	byte type;
	byte callback;

	TileIndex data_a;
	TileIndex data_b;

	uint32 params[10];
};

typedef bool ValidationProc ( uint data_a, uint data_b );
typedef void DrawNewsCallbackProc(Window *w);
typedef StringID GetNewsStringCallbackProc(const NewsItem *ni);

#define NEWS_FLAGS(mode,flag,type,cb) ((cb)<<24 | (type)<<16 | (flag)<<8 | (mode))
void AddNewsItem(StringID string, uint32 flags, uint data_a, uint data_b);
void NewsLoop(void);
void DrawNewsBorder(const Window *w);
void InitNewsItemStructs(void);

VARDEF NewsItem _statusbar_news_item;

enum {
	NT_ARRIVAL_PLAYER = 0,
	NT_ARRIVAL_OTHER  = 1,
	NT_ACCIDENT       = 2,
	NT_COMPANY_INFO   = 3,
	NT_ECONOMY        = 4,
	NT_ADVICE         = 5,
	NT_NEW_VEHICLES   = 6,
	NT_ACCEPTANCE     = 7,
	NT_SUBSIDIES      = 8,
	NT_GENERAL        = 9,
};

enum NewsMode {
	NM_SMALL    = 0,
	NM_NORMAL   = 1,
	NM_THIN     = 2,
	NM_CALLBACK = 3,
};

enum NewsFlags {
	NF_VIEWPORT  = 0x01,
	NF_TILE      = 0x04,
	NF_VEHICLE   = 0x08,
	NF_FORCE_BIG = 0x10,
	NF_NOEXPIRE  = 0x20,
	NF_INCOLOR   = 0x40,
};

enum {
	DNC_TRAINAVAIL    = 0,
	DNC_ROADAVAIL     = 1,
	DNC_SHIPAVAIL     = 2,
	DNC_AIRCRAFTAVAIL = 3,
	DNC_BANKRUPCY     = 4,
};

/**
 * Delete a news item type about a vehicle
 * if the news item type is INVALID_STRING_ID all news about the vehicle get
 * deleted
 */
void DeleteVehicleNews(VehicleID, StringID news);

#endif /* NEWS_H */
