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italian - 3 changes by lorenzodv
korean - 11 changes by Gimel3830, telk5093
lithuanian - 4 changes by Stabilitronas
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r21202:3a70a357c1f1 r21202:3a70a357c1f1 r21202:3a70a357c1f1 r21202:3a70a357c1f1 r21202:3a70a357c1f1 r21202:3a70a357c1f1 r21202:3a70a357c1f1 r21202:3a70a357c1f1 r16756:a08038794be3 r16756:a08038794be3 r18604:49cb0a019581 r18604:49cb0a019581 r18604:49cb0a019581 r18604:49cb0a019581 r18604:49cb0a019581 r16756:a08038794be3 r16756:a08038794be3 r16747:52ae4248bc0a r16747:52ae4248bc0a r16747:52ae4248bc0a r16747:52ae4248bc0a r16747:52ae4248bc0a r16747:52ae4248bc0a r16751:423dbe0ea2b1 r16747:52ae4248bc0a r14156:7136b6af34ec | /* $Id$ */
/*
* 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 tilearea_type.h Type for storing the 'area' of something uses on the map. */
#ifndef TILEAREA_TYPE_H
#define TILEAREA_TYPE_H
#include "map_func.h"
/** Represents the covered area of e.g. a rail station */
struct OrthogonalTileArea {
TileIndex tile; ///< The base tile of the area
uint16 w; ///< The width of the area
uint16 h; ///< The height of the area
/**
* Construct this tile area with some set values
* @param tile the base tile
* @param w the width
* @param h the height
*/
OrthogonalTileArea(TileIndex tile = INVALID_TILE, uint8 w = 0, uint8 h = 0) : tile(tile), w(w), h(h)
{
}
OrthogonalTileArea(TileIndex start, TileIndex end);
void Add(TileIndex to_add);
/**
* Clears the 'tile area', i.e. make the tile invalid.
*/
void Clear()
{
this->tile = INVALID_TILE;
this->w = 0;
this->h = 0;
}
bool Intersects(const OrthogonalTileArea &ta) const;
bool Contains(TileIndex tile) const;
void ClampToMap();
/**
* Get the center tile.
* @return The tile at the center, or just north of it.
*/
TileIndex GetCenterTile() const
{
return TILE_ADDXY(this->tile, this->w / 2, this->h / 2);
}
};
/** Represents a diagonal tile area. */
struct DiagonalTileArea {
TileIndex tile; ///< Base tile of the area
int16 a; ///< Extent in diagonal "x" direction (may be negative to signify the area stretches to the left)
int16 b; ///< Extent in diagonal "y" direction (may be negative to signify the area stretches upwards)
/**
* Construct this tile area with some set values.
* @param tile The base tile.
* @param a The "x" extent.
* @param b The "y" estent.
*/
DiagonalTileArea(TileIndex tile = INVALID_TILE, int8 a = 0, int8 b = 0) : tile(tile), a(a), b(b)
{
}
DiagonalTileArea(TileIndex start, TileIndex end);
/**
* Clears the TileArea by making the tile invalid and setting a and b to 0.
*/
void Clear()
{
this->tile = INVALID_TILE;
this->a = 0;
this->b = 0;
}
bool Contains(TileIndex tile) const;
};
/** Shorthand for the much more common orthogonal tile area. */
typedef OrthogonalTileArea TileArea;
/** Base class for tile iterators. */
class TileIterator {
protected:
TileIndex tile; ///< The current tile we are at.
/**
* Initialise the iterator starting at this tile.
* @param tile The tile we start iterating from.
*/
TileIterator(TileIndex tile = INVALID_TILE) : tile(tile)
{
}
public:
/** Some compilers really like this. */
virtual ~TileIterator()
{
}
/**
* Get the tile we are currently at.
* @return The tile we are at, or INVALID_TILE when we're done.
*/
inline operator TileIndex () const
{
return this->tile;
}
/**
* Move ourselves to the next tile in the rectangle on the map.
*/
virtual TileIterator& operator ++() = 0;
/**
* Allocate a new iterator that is a copy of this one.
*/
virtual TileIterator *Clone() const = 0;
};
/** Iterator to iterate over a tile area (rectangle) of the map. */
class OrthogonalTileIterator : public TileIterator {
private:
int w; ///< The width of the iterated area.
int x; ///< The current 'x' position in the rectangle.
int y; ///< The current 'y' position in the rectangle.
public:
/**
* Construct the iterator.
* @param ta Area, i.e. begin point and width/height of to-be-iterated area.
*/
OrthogonalTileIterator(const OrthogonalTileArea &ta) : TileIterator(ta.w == 0 || ta.h == 0 ? INVALID_TILE : ta.tile), w(ta.w), x(ta.w), y(ta.h)
{
}
/**
* Construct the iterator.
* @param corner1 Tile from where to begin iterating.
* @param corner2 Tile where to end the iterating.
*/
OrthogonalTileIterator(TileIndex corner1, TileIndex corner2)
{
*this = OrthogonalTileIterator(OrthogonalTileArea(corner1, corner2));
}
/**
* Move ourselves to the next tile in the rectangle on the map.
*/
inline TileIterator& operator ++()
{
assert(this->tile != INVALID_TILE);
if (--this->x > 0) {
this->tile++;
} else if (--this->y > 0) {
this->x = this->w;
this->tile += TileDiffXY(1, 1) - this->w;
} else {
this->tile = INVALID_TILE;
}
return *this;
}
virtual TileIterator *Clone() const
{
return new OrthogonalTileIterator(*this);
}
};
/** Iterator to iterate over a diagonal area of the map. */
class DiagonalTileIterator : public TileIterator {
private:
uint base_x; ///< The base tile x coordinate from where the iterating happens.
uint base_y; ///< The base tile y coordinate from where the iterating happens.
int a_cur; ///< The current (rotated) x coordinate of the iteration.
int b_cur; ///< The current (rotated) y coordinate of the iteration.
int a_max; ///< The (rotated) x coordinate of the end of the iteration.
int b_max; ///< The (rotated) y coordinate of the end of the iteration.
public:
/**
* Construct the iterator.
* @param ta Area, i.e. begin point and (diagonal) width/height of to-be-iterated area.
*/
DiagonalTileIterator(const DiagonalTileArea &ta) :
TileIterator(ta.tile), base_x(TileX(ta.tile)), base_y(TileY(ta.tile)), a_cur(0), b_cur(0), a_max(ta.a), b_max(ta.b)
{
}
/**
* Construct the iterator.
* @param corner1 Tile from where to begin iterating.
* @param corner2 Tile where to end the iterating.
*/
DiagonalTileIterator(TileIndex corner1, TileIndex corner2)
{
*this = DiagonalTileIterator(DiagonalTileArea(corner1, corner2));
}
TileIterator& operator ++();
virtual TileIterator *Clone() const
{
return new DiagonalTileIterator(*this);
}
};
/**
* A loop which iterates over the tiles of a TileArea.
* @param var The name of the variable which contains the current tile.
* This variable will be allocated in this \c for of this loop.
* @param ta The tile area to search over.
*/
#define TILE_AREA_LOOP(var, ta) for (OrthogonalTileIterator var(ta); var != INVALID_TILE; ++var)
#endif /* TILEAREA_TYPE_H */
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