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/* $Id$ */

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/** @file bridge.h Header file for bridges */

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#ifndef BRIDGE_H

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#define BRIDGE_H

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#include "gfx_type.h"

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#include "direction_type.h"

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#include "tile_cmd.h"

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enum {

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	MAX_BRIDGES = 13

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};

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/** Struct containing information about a single bridge type

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 */

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struct Bridge {

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	Year avail_year;     ///< the year in which the bridge becomes available

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	byte min_length;     ///< the minimum length of the bridge (not counting start and end tile)

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	byte max_length;     ///< the maximum length of the bridge (not counting start and end tile)

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	uint16 price;        ///< the relative price of the bridge

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	uint16 speed;        ///< maximum travel speed

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	SpriteID sprite;     ///< the sprite which is used in the GUI

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	SpriteID pal;        ///< the palette which is used in the GUI

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	StringID material;   ///< the string that contains the bridge description

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	PalSpriteID **sprite_table; ///< table of sprites for drawing the bridge

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	byte flags;          ///< bit 0 set: disable drawing of far pillars.

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};

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extern const Bridge orig_bridge[MAX_BRIDGES];

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extern Bridge _bridge[MAX_BRIDGES];

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Foundation GetBridgeFoundation(Slope tileh, Axis axis);

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bool HasBridgeFlatRamp(Slope tileh, Axis axis);

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static inline const Bridge *GetBridge(uint i)

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{

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	assert(i < lengthof(_bridge));

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	return &_bridge[i];

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}

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void DrawBridgeMiddle(const TileInfo *ti);

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bool CheckBridge_Stuff(byte bridge_type, uint bridge_len);

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uint32 GetBridgeLength(TileIndex begin, TileIndex end);

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int CalcBridgeLenCostFactor(int x);

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#endif /* BRIDGE_H */