101 lines
2.5 KiB
C++
101 lines
2.5 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* This program 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, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* This code is based on the CRAB engine
|
|
*
|
|
* Copyright (c) Arvind Raja Yadav
|
|
*
|
|
* Licensed under MIT
|
|
*
|
|
*/
|
|
|
|
#ifndef CRAB_TILEINFO_H
|
|
#define CRAB_TILEINFO_H
|
|
|
|
#include "crab/loaders.h"
|
|
|
|
namespace Crab {
|
|
|
|
namespace TMX {
|
|
typedef uint GidFormat;
|
|
|
|
// Bits on the far end of the 32-bit global tile ID are used for tile flags
|
|
const static GidFormat FlippedHorizontallyFlag = 0x80000000;
|
|
const static GidFormat FlippedVerticallyFlag = 0x40000000;
|
|
const static GidFormat FlippedAntiDiagonallyFlag = 0x20000000;
|
|
|
|
struct TileInfo {
|
|
// The gid of the tile
|
|
GidFormat _gid;
|
|
|
|
// Do we need to flip this tile?
|
|
TextureFlipType _flip;
|
|
|
|
TileInfo() {
|
|
_gid = 0;
|
|
_flip = FLIP_NONE;
|
|
}
|
|
|
|
TileInfo(rapidxml::xml_node<char> *node) {
|
|
// Load the gid of the tile
|
|
if (!loadNum(_gid, "gid", node))
|
|
_gid = 0;
|
|
|
|
bool horizontal = (_gid & FlippedHorizontallyFlag) != 0;
|
|
bool vertical = (_gid & FlippedVerticallyFlag) != 0;
|
|
bool antidiagonal = (_gid & FlippedAntiDiagonallyFlag) != 0;
|
|
|
|
// Find how the tile is flipped
|
|
if (horizontal) {
|
|
if (vertical) {
|
|
if (antidiagonal)
|
|
_flip = FLIP_XYD;
|
|
else
|
|
_flip = FLIP_XY;
|
|
} else if (antidiagonal)
|
|
_flip = FLIP_DX;
|
|
else
|
|
_flip = FLIP_X;
|
|
} else if (vertical) {
|
|
if (antidiagonal)
|
|
_flip = FLIP_DY;
|
|
else
|
|
_flip = FLIP_Y;
|
|
} else if (antidiagonal)
|
|
_flip = FLIP_D;
|
|
else
|
|
_flip = FLIP_NONE;
|
|
|
|
// Clear the flags
|
|
_gid &= ~(FlippedHorizontallyFlag | FlippedVerticallyFlag | FlippedAntiDiagonallyFlag);
|
|
}
|
|
|
|
bool operator==(const TileInfo& other) const {
|
|
return (_gid == other._gid) && (_flip == other._flip);
|
|
}
|
|
};
|
|
} // End of namespace TMX
|
|
|
|
} // End of namespace Crab
|
|
|
|
#endif // CRAB_TILEINFO_H
|