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/* $Id$ */
/** @file bridge.h Header file for bridges */
#ifndef BRIDGE_H
#define BRIDGE_H
#include "gfx_type.h"
#include "direction_type.h"
#include "tile_cmd.h"
/** This enum is related to the definition of bridge pieces,
* which is used to determine the proper sprite table to use
* while drawing a given bridge part.
*/
enum BridgePieces {
BRIDGE_PIECE_NORTH = 0,
BRIDGE_PIECE_SOUTH,
BRIDGE_PIECE_INNER_NORTH,
BRIDGE_PIECE_INNER_SOUTH,
BRIDGE_PIECE_MIDDLE_ODD,
BRIDGE_PIECE_MIDDLE_EVEN,
BRIDGE_PIECE_HEAD,
BRIDGE_PIECE_INVALID,
};
DECLARE_POSTFIX_INCREMENT(BridgePieces);
enum {
MAX_BRIDGES = 13
};
typedef uint BridgeType;
/** Struct containing information about a single bridge type
*/
struct BridgeSpec {
Year avail_year; ///< the year where it becomes available
byte min_length; ///< the minimum length (not counting start and end tile)
byte max_length; ///< the maximum length (not counting start and end tile)
uint16 price; ///< the price multiplier
uint16 speed; ///< maximum travel speed
SpriteID sprite; ///< the sprite which is used in the GUI
SpriteID pal; ///< the palette which is used in the GUI
StringID material; ///< the string that contains the bridge description
StringID transport_name[2]; ///< description of the bridge, when built for road or rail
PalSpriteID **sprite_table; ///< table of sprites for drawing the bridge
byte flags; ///< bit 0 set: disable drawing of far pillars.
};
extern BridgeSpec _bridge[MAX_BRIDGES];
Foundation GetBridgeFoundation(Slope tileh, Axis axis);
bool HasBridgeFlatRamp(Slope tileh, Axis axis);
static inline const BridgeSpec *GetBridgeSpec(BridgeType i)
{
assert(i < lengthof(_bridge));
return &_bridge[i];
}
void DrawBridgeMiddle(const TileInfo *ti);
bool CheckBridge_Stuff(BridgeType bridge_type, uint bridge_len, DoCommandFlag flags = DC_NONE);
int CalcBridgeLenCostFactor(int x);
void ResetBridges();
#endif /* BRIDGE_H */
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