(svn r2448) General cleanup of rail related code, more to follow.
* Add: rail.[ch] for rail-related enums and wrapper functions.
* Codechange: Removed dozens of magic numbers with below enums.
* Codechange: Rewrote CheckTrackCombination().
* Add: TILE_SIZE, TILE_PIXELS and TILE_HEIGHT constants.
* Add: enums RailTileType, RailTileSubtype, SignalType to mask against the map arrays.
* Add: enums Track, TrackBits, Trackdir, TrackdirBits for railway track data. (Note that the old RAIL_BIT constants are replaced by TRACK_BIT ones).
* Add: enums Direction and DiagDirection
* Codechange: Moved a bunch of track(dir) related lookup arrays from npf.[ch] to rail.[ch].
* Codechange: move RailType enum from tile.h to rail.h.
* Add: Wrapper functions for masking signal status in the map arrays: SignalAlongTrackdir, SignalAgainstTrackdir and SignalOnTrack.
* Add: Wrapper functions to access rail tiles, using above enums
* Add: Wrapper functions to modify tracks, trackdirs, directions, etc.
* Add: Wrapper functions for all lookup arrays in rail.[ch] (Arrays are still used in parts of the code)
* Codechange: Renamed some variables and arguments to better represent what they contain (railbit -> track, bits -> trackdirbits, etc.).
* Codechange: Don't use FindLandscapeHeight() in CmdRemoveSingleRail(), since it returns way too much info. Use GetTileSlope() instead.
* Codechange: [NPF] Removed some unused globals and code from npf.c.

     1

Microsoft Developer Studio Workspace File, Format Version 6.00

     2

# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!

     3

     4

###############################################################################

     5

     6

Project: "langs"=.\langs.dsp - Package Owner=<4>

     7

     8

Package=<5>

     9

{{{

    10

}}}

    11

    12

Package=<4>

    13

{{{

    14

    Begin Project Dependency

    15

    Project_Dep_Name strgen

    16

    End Project Dependency

    17

}}}

    18

    19

###############################################################################

    20

    21

Project: "strgen"=.\strgen\strgen.dsp - Package Owner=<4>

    22

    23

Package=<5>

    24

{{{

    25

}}}

    26

    27

Package=<4>

    28

{{{

    29

}}}

    30

    31

###############################################################################

    32

    33

Project: "openttd"=.\openttd.dsp - Package Owner=<4>

    34

    35

Package=<5>

    36

{{{

    37

}}}

    38

    39

Package=<4>

    40

{{{

    41

    Begin Project Dependency

    42

    Project_Dep_Name langs

    43

    End Project Dependency

    44

}}}

    45

    46

###############################################################################

    47

    48

Global:

    49

    50

Package=<5>

    51

{{{

    52

}}}

    53

    54

Package=<3>

    55

{{{

    56

}}}

    57

    58

###############################################################################

    59