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Location: cpp/openttd-patchpack/source/src/tilearea.cpp - annotation
r16729:482bfc615285
2.6 KiB
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(svn r21472) -Fix [FS#4298] (r21459-ish): make sure the query window is only opened once per parent window / callback.
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/*
* 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.cpp Handling of tile areas. */
#include "stdafx.h"
#include "map_func.h"
#include "tilearea_type.h"
/**
* Construct this tile area based on two points.
* @param start the start of the area
* @param end the end of the area
*/
TileArea::TileArea(TileIndex start, TileIndex end)
{
uint sx = TileX(start);
uint sy = TileY(start);
uint ex = TileX(end);
uint ey = TileY(end);
if (sx > ex) Swap(sx, ex);
if (sy > ey) Swap(sy, ey);
this->tile = TileXY(sx, sy);
this->w = ex - sx + 1;
this->h = ey - sy + 1;
}
/**
* Add a single tile to a tile area; enlarge if needed.
* @param to_add The tile to add
*/
void TileArea::Add(TileIndex to_add)
{
if (this->tile == INVALID_TILE) {
this->tile = to_add;
this->w = 1;
this->h = 1;
return;
}
uint sx = TileX(this->tile);
uint sy = TileY(this->tile);
uint ex = sx + this->w - 1;
uint ey = sy + this->h - 1;
uint ax = TileX(to_add);
uint ay = TileY(to_add);
sx = min(ax, sx);
sy = min(ay, sy);
ex = max(ax, ex);
ey = max(ay, ey);
this->tile = TileXY(sx, sy);
this->w = ex - sx + 1;
this->h = ey - sy + 1;
}
/**
* Does this tile area intersect with another?
* @param ta the other tile area to check against.
* @return true if they intersect.
*/
bool TileArea::Intersects(const TileArea &ta) const
{
if (ta.w == 0 || this->w == 0) return false;
assert(ta.w != 0 && ta.h != 0 && this->w != 0 && this->h != 0);
uint left1 = TileX(this->tile);
uint top1 = TileY(this->tile);
uint right1 = left1 + this->w - 1;
uint bottom1 = top1 + this->h - 1;
uint left2 = TileX(ta.tile);
uint top2 = TileY(ta.tile);
uint right2 = left2 + ta.w - 1;
uint bottom2 = top2 + ta.h - 1;
return !(
left2 > right1 ||
right2 < left1 ||
top2 > bottom1 ||
bottom2 < top1
);
}
/**
* Clamp the tile area to map borders.
*/
void TileArea::ClampToMap()
{
assert(this->tile < MapSize());
this->w = min(this->w, MapSizeX() - TileX(this->tile));
this->h = min(this->h, MapSizeY() - TileY(this->tile));
}
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