mirror of
https://github.com/JGRennison/OpenTTD-patches.git
synced 2024-10-31 15:20:10 +00:00
99 lines
3.6 KiB
C
99 lines
3.6 KiB
C
/* $Id$ */
|
|
|
|
/*
|
|
* This file is part of OpenTTD.
|
|
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
|
|
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/** @file landscape.h Functions related to OTTD's landscape. */
|
|
|
|
#ifndef LANDSCAPE_H
|
|
#define LANDSCAPE_H
|
|
|
|
#include "core/geometry_type.hpp"
|
|
#include "tile_cmd.h"
|
|
|
|
enum {
|
|
SNOW_LINE_MONTHS = 12, ///< Number of months in the snow line table.
|
|
SNOW_LINE_DAYS = 32, ///< Number of days in each month in the snow line table.
|
|
};
|
|
|
|
/** Structure describing the height of the snow line each day of the year
|
|
* @ingroup SnowLineGroup */
|
|
struct SnowLine {
|
|
byte table[SNOW_LINE_MONTHS][SNOW_LINE_DAYS]; ///< Height of the snow line each day of the year
|
|
byte highest_value; ///< Highest snow line of the year
|
|
byte lowest_value; ///< Lowest snow line of the year
|
|
};
|
|
|
|
bool IsSnowLineSet();
|
|
void SetSnowLine(byte table[SNOW_LINE_MONTHS][SNOW_LINE_DAYS]);
|
|
byte GetSnowLine();
|
|
byte HighestSnowLine();
|
|
byte LowestSnowLine();
|
|
void ClearSnowLine();
|
|
|
|
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);
|
|
Slope GetFoundationSlope(TileIndex tile, uint *z);
|
|
|
|
/**
|
|
* Map 3D world or tile coordinate to equivalent 2D coordinate as used in the viewports and smallmap.
|
|
* @param x X world or tile coordinate (runs in SW direction in the 2D view).
|
|
* @param y Y world or tile coordinate (runs in SE direction in the 2D view).
|
|
* @param z Z world or tile coordinate (runs in N direction in the 2D view).
|
|
* @return Equivalent coordinate in the 2D view.
|
|
* @see RemapCoords2
|
|
*/
|
|
static inline Point RemapCoords(int x, int y, int z)
|
|
{
|
|
Point pt;
|
|
pt.x = (y - x) * 2;
|
|
pt.y = y + x - z;
|
|
return pt;
|
|
}
|
|
|
|
/**
|
|
* Map 3D world or tile coordinate to equivalent 2D coordinate as used in the viewports and smallmap.
|
|
* Same as #RemapCoords, except the Z coordinate is read from the map.
|
|
* @param x X world or tile coordinate (runs in SW direction in the 2D view).
|
|
* @param y Y world or tile coordinate (runs in SE direction in the 2D view).
|
|
* @return Equivalent coordinate in the 2D view.
|
|
* @see RemapCoords
|
|
*/
|
|
static inline Point RemapCoords2(int x, int y)
|
|
{
|
|
return RemapCoords(x, y, GetSlopeZ(x, y));
|
|
}
|
|
|
|
/**
|
|
* Map 2D viewport or smallmap coordinate to 3D world or tile coordinate.
|
|
* Function assumes <tt>z == 0</tt>. For other values of \p z, add \p z to \a y before the call.
|
|
* @param x X coordinate of the 2D coordinate.
|
|
* @param y Y coordinate of the 2D coordinate.
|
|
* @return X and Y components of equivalent world or tile coordinate.
|
|
* @note Inverse of #RemapCoords function. Smaller values may get rounded.
|
|
*/
|
|
static inline Point InverseRemapCoords(int x, int y)
|
|
{
|
|
Point pt = {(y * 2 - x) >> 2, (y * 2 + x) >> 2};
|
|
return pt;
|
|
}
|
|
|
|
uint ApplyFoundationToSlope(Foundation f, Slope *s);
|
|
void DrawFoundation(TileInfo *ti, Foundation f);
|
|
bool HasFoundationNW(TileIndex tile, Slope slope_here, uint z_here);
|
|
bool HasFoundationNE(TileIndex tile, Slope slope_here, uint z_here);
|
|
|
|
void DoClearSquare(TileIndex tile);
|
|
void RunTileLoop();
|
|
|
|
void InitializeLandscape();
|
|
void GenerateLandscape(byte mode);
|
|
|
|
#endif /* LANDSCAPE_H */
|