landscape.h

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00001 /* $Id: landscape.h 14949 2009-01-10 00:31:47Z rubidium $ */
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 
00020 struct SnowLine {
00021   byte table[SNOW_LINE_MONTHS][SNOW_LINE_DAYS]; 
00022   byte highest_value; 
00023 };
00024 
00025 bool IsSnowLineSet(void);
00026 void SetSnowLine(byte table[SNOW_LINE_MONTHS][SNOW_LINE_DAYS]);
00027 byte GetSnowLine(void);
00028 byte HighestSnowLine(void);
00029 void ClearSnowLine(void);
00030 
00031 uint GetPartialZ(int x, int y, Slope corners);
00032 uint GetSlopeZ(int x, int y);
00033 void GetSlopeZOnEdge(Slope tileh, DiagDirection edge, int *z1, int *z2);
00034 int GetSlopeZInCorner(Slope tileh, Corner corner);
00035 Slope GetFoundationSlope(TileIndex tile, uint *z);
00036 
00037 static inline Point RemapCoords(int x, int y, int z)
00038 {
00039   Point pt;
00040   pt.x = (y - x) * 2;
00041   pt.y = y + x - z;
00042   return pt;
00043 }
00044 
00045 static inline Point RemapCoords2(int x, int y)
00046 {
00047   return RemapCoords(x, y, GetSlopeZ(x, y));
00048 }
00049 
00050 uint ApplyFoundationToSlope(Foundation f, Slope *s);
00051 void DrawFoundation(TileInfo *ti, Foundation f);
00052 
00053 void DoClearSquare(TileIndex tile);
00054 void RunTileLoop();
00055 
00056 void InitializeLandscape();
00057 void GenerateLandscape(byte mode);
00058 
00059 TileIndex AdjustTileCoordRandomly(TileIndex a, byte rng);
00060 
00061 #endif /* LANDSCAPE_H */

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