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/* $Id$ */
/** @file landscape.h */
#ifndef LANDSCAPE_H
#define LANDSCAPE_H
enum {
SNOW_LINE_MONTHS = 12,
SNOW_LINE_DAYS = 32,
};
struct SnowLine {
byte table[SNOW_LINE_MONTHS][SNOW_LINE_DAYS];
byte highest_value;
};
bool IsSnowLineSet(void);
void SetSnowLine(byte table[SNOW_LINE_MONTHS][SNOW_LINE_DAYS]);
byte GetSnowLine(void);
byte HighestSnowLine(void);
void ClearSnowLine(void);
bool IsValidTile(TileIndex tile);
uint GetPartialZ(int x, int y, Slope corners);
uint GetSlopeZ(int x, int y);
void GetSlopeZOnEdge(Slope tileh, DiagDirection edge, int *z1, int *z2);
int GetSlopeZInCorner(Slope tileh, Corner corner);
static inline Point RemapCoords(int x, int y, int z)
{
Point pt;
pt.x = (y - x) * 2;
pt.y = y + x - z;
return pt;
}
static inline Point RemapCoords2(int x, int y)
{
return RemapCoords(x, y, GetSlopeZ(x, y));
}
uint ApplyFoundationToSlope(Foundation f, Slope *s);
void DrawFoundation(TileInfo *ti, Foundation f);
void DoClearSquare(TileIndex tile);
void RunTileLoop();
uint32 GetTileTrackStatus(TileIndex tile, TransportType mode, uint sub_mode);
void GetAcceptedCargo(TileIndex tile, AcceptedCargo ac);
void ChangeTileOwner(TileIndex tile, PlayerID old_player, PlayerID new_player);
void AnimateTile(TileIndex tile);
void ClickTile(TileIndex tile);
void GetTileDesc(TileIndex tile, TileDesc *td);
void InitializeLandscape();
void GenerateLandscape(byte mode);
void ConvertGroundTilesIntoWaterTiles();
TileIndex AdjustTileCoordRandomly(TileIndex a, byte rng);
#endif /* LANDSCAPE_H */
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