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Patric Stout

Add: [Emscripten] use "relative mouse mode" with SDL2

This mode doesn't wrap the mouse constantly, but requests SDL
to lock the mouse pointer. This is needed, as with Emscripten
you are not allowed to change the mouse poisition (only to lock
it into place).

/*
 * 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 heightmap.h Functions related to creating heightmaps from files. */

#ifndef HEIGHTMAP_H
#define HEIGHTMAP_H

#include "fileio_type.h"

/**
 * Order of these enums has to be the same as in lang/english.txt
 * Otherwise you will get inconsistent behaviour.
 */
enum HeightmapRotation {
	HM_COUNTER_CLOCKWISE, ///< Rotate the map counter clockwise 45 degrees
	HM_CLOCKWISE,         ///< Rotate the map clockwise 45 degrees
};

bool GetHeightmapDimensions(DetailedFileType dft, const char *filename, uint *x, uint *y);
void LoadHeightmap(DetailedFileType dft, const char *filename);
void FlatEmptyWorld(byte tile_height);
void FixSlopes();

#endif /* HEIGHTMAP_H */