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62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/* $Id$ */
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/** @file landscape.h Functions related to OTTD's landscape. */
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#ifndef LANDSCAPE_H
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#define LANDSCAPE_H
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#include "core/geometry_type.hpp"
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#include "tile_cmd.h"
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#include "slope_type.h"
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#include "direction_type.h"
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enum {
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SNOW_LINE_MONTHS = 12, ///< Number of months in the snow line table.
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SNOW_LINE_DAYS = 32, ///< Number of days in each month in the snow line table.
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};
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/** Structure describing the height of the snow line each day of the year
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* @ingroup SnowLineGroup */
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struct SnowLine {
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byte table[SNOW_LINE_MONTHS][SNOW_LINE_DAYS]; ///< Height of the snow line each day of the year
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byte highest_value; ///< Highest snow line of the year
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};
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bool IsSnowLineSet(void);
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void SetSnowLine(byte table[SNOW_LINE_MONTHS][SNOW_LINE_DAYS]);
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byte GetSnowLine(void);
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byte HighestSnowLine(void);
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void ClearSnowLine(void);
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uint GetPartialZ(int x, int y, Slope corners);
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uint GetSlopeZ(int x, int y);
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void GetSlopeZOnEdge(Slope tileh, DiagDirection edge, int *z1, int *z2);
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int GetSlopeZInCorner(Slope tileh, Corner corner);
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Slope GetFoundationSlope(TileIndex tile, uint* z);
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static inline Point RemapCoords(int x, int y, int z)
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{
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Point pt;
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pt.x = (y - x) * 2;
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pt.y = y + x - z;
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return pt;
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}
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static inline Point RemapCoords2(int x, int y)
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{
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return RemapCoords(x, y, GetSlopeZ(x, y));
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}
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uint ApplyFoundationToSlope(Foundation f, Slope *s);
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void DrawFoundation(TileInfo *ti, Foundation f);
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void DoClearSquare(TileIndex tile);
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void RunTileLoop();
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void InitializeLandscape();
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void GenerateLandscape(byte mode);
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TileIndex AdjustTileCoordRandomly(TileIndex a, byte rng);
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#endif /* LANDSCAPE_H */
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