landscape.h

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00001 /* $Id: landscape.h 12303 2008-02-28 00:10:08Z glx $ */
00002 
00005 #ifndef LANDSCAPE_H
00006 #define LANDSCAPE_H
00007 
00008 #include "core/geometry_type.hpp"
00009 #include "tile_cmd.h"
00010 #include "slope_type.h"
00011 #include "direction_type.h"
00012 
00013 enum {
00014   SNOW_LINE_MONTHS = 12,
00015   SNOW_LINE_DAYS   = 32,
00016 };
00017 
00018 struct SnowLine {
00019   byte table[SNOW_LINE_MONTHS][SNOW_LINE_DAYS];
00020   byte highest_value;
00021 };
00022 
00023 bool IsSnowLineSet(void);
00024 void SetSnowLine(byte table[SNOW_LINE_MONTHS][SNOW_LINE_DAYS]);
00025 byte GetSnowLine(void);
00026 byte HighestSnowLine(void);
00027 void ClearSnowLine(void);
00028 
00029 uint GetPartialZ(int x, int y, Slope corners);
00030 uint GetSlopeZ(int x, int y);
00031 void GetSlopeZOnEdge(Slope tileh, DiagDirection edge, int *z1, int *z2);
00032 int GetSlopeZInCorner(Slope tileh, Corner corner);
00033 Slope GetFoundationSlope(TileIndex tile, uint* z);
00034 
00035 static inline Point RemapCoords(int x, int y, int z)
00036 {
00037   Point pt;
00038   pt.x = (y - x) * 2;
00039   pt.y = y + x - z;
00040   return pt;
00041 }
00042 
00043 static inline Point RemapCoords2(int x, int y)
00044 {
00045   return RemapCoords(x, y, GetSlopeZ(x, y));
00046 }
00047 
00048 uint ApplyFoundationToSlope(Foundation f, Slope *s);
00049 void DrawFoundation(TileInfo *ti, Foundation f);
00050 
00051 void DoClearSquare(TileIndex tile);
00052 void RunTileLoop();
00053 
00054 void InitializeLandscape();
00055 void GenerateLandscape(byte mode);
00056 
00057 TileIndex AdjustTileCoordRandomly(TileIndex a, byte rng);
00058 
00059 #endif /* LANDSCAPE_H */

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