(svn r7759) -Merge: makefile rewrite. This merge features:
- A proper ./configure, so everything needs to be configured only once, not for every make.
- Usage of makedepend when available. This greatly reduces the time needed for generating the dependencies.
- A generator for all project files. There is a single file with sources, which is used to generate Makefiles and the project files for MSVC.
- Proper support for OSX universal binaries.
- Object files for non-MSVC compiles are also placed in separate directories, making is faster to switch between debug and release compiles and it does not touch the directory with the source files.
- Functionality to make a bundle of all needed files for for example a nightly or distribution of a binary with all needed GRFs and language files.

Note: as this merge moves almost all files, it is recommended to make a backup of your working copy before updating your working copy.

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/* $Id$ */

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#ifndef HEIGHTMAP_H

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#define HEIGHTMAP_H

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/*

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 * Order of these enums has to be the same as in lang/english.txt

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 * Otherwise you will get inconsistent behaviour.

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 */

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enum {

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	HM_COUNTER_CLOCKWISE, //! Rotate the map counter clockwise 45 degrees

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	HM_CLOCKWISE,         //! Rotate the map clockwise 45 degrees

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};

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/**

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 * Get the dimensions of a heightmap.

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 * @return Returns false if loading of the image failed.

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 */

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bool GetHeightmapDimensions(char *filename, uint *x, uint *y);

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/**

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 * Load a heightmap from file and change the map in his current dimensions

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 *  to a landscape representing the heightmap.

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 * It converts pixels to height. The brighter, the higher.

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 */

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void LoadHeightmap(char *filename);

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/**

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 * Make an empty world where all tiles are of height 'tile_height'.

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 */

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void FlatEmptyWorld(byte tile_height);

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#endif /* HEIGHTMAP_H */