|
1 #include "rail.h" |
|
2 |
|
3 /* Maps a trackdir to the bit that stores its status in the map arrays, in the |
|
4 * direction along with the trackdir */ |
|
5 const byte _signal_along_trackdir[] = { |
|
6 0x80, 0x80, 0x80, 0x20, 0x40, 0x10, 0, 0, |
|
7 0x40, 0x40, 0x40, 0x10, 0x80, 0x20 |
|
8 }; |
|
9 |
|
10 /* Maps a trackdir to the bit that stores its status in the map arrays, in the |
|
11 * direction against the trackdir */ |
|
12 const byte _signal_against_trackdir[] = { |
|
13 0x40, 0x40, 0x40, 0x10, 0x80, 0x20, 0, 0, |
|
14 0x80, 0x80, 0x80, 0x20, 0x40, 0x10 |
|
15 }; |
|
16 |
|
17 /* Maps a Track to the bits that store the status of the two signals that can |
|
18 * be present on the given track */ |
|
19 const byte _signal_on_track[] = { |
|
20 0xC0, 0xC0, 0xC0, 0x30, 0xC0, 0x30 |
|
21 }; |
|
22 |
|
23 /* Maps a diagonal direction to the all trackdirs that are connected to any |
|
24 * track entering in this direction (including those making 90 degree turns) |
|
25 */ |
|
26 const TrackdirBits _exitdir_reaches_trackdirs[] = { |
|
27 TRACKDIR_BIT_DIAG1_NE|TRACKDIR_BIT_LOWER_E|TRACKDIR_BIT_LEFT_N, /* DIAGDIR_NE */ |
|
28 TRACKDIR_BIT_DIAG2_SE|TRACKDIR_BIT_LEFT_S |TRACKDIR_BIT_UPPER_E, /* DIAGDIR_SE */ |
|
29 TRACKDIR_BIT_DIAG1_SW|TRACKDIR_BIT_UPPER_W|TRACKDIR_BIT_RIGHT_S, /* DIAGDIR_SW */ |
|
30 TRACKDIR_BIT_DIAG2_NW|TRACKDIR_BIT_RIGHT_N|TRACKDIR_BIT_LOWER_W /* DIAGDIR_NW */ |
|
31 }; |
|
32 |
|
33 /* TODO: Remove magic numbers from tables below just like |
|
34 * _exitdir_reaches_trackdirs[] */ |
|
35 |
|
36 const Trackdir _next_trackdir[14] = { |
|
37 0, 1, 3, 2, 5, 4, 0, 0, |
|
38 8, 9, 11, 10, 13, 12 |
|
39 }; |
|
40 |
|
41 /* Maps a trackdir to all trackdirs that make 90 deg turns with it. */ |
|
42 const TrackdirBits _trackdir_crosses_trackdirs[] = { |
|
43 0x0202, 0x0101, 0x3030, 0x3030, 0x0C0C, 0x0C0C, 0, 0, |
|
44 0x0202, 0x0101, 0x3030, 0x3030, 0x0C0C, 0x0C0C |
|
45 }; |
|
46 |
|
47 /* Maps a track to all tracks that make 90 deg turns with it. */ |
|
48 const TrackBits _track_crosses_tracks[] = { |
|
49 0x2, /* Track 1 -> Track 2 */ |
|
50 0x1, /* Track 2 -> Track 1 */ |
|
51 0x30, /* Upper -> Left | Right */ |
|
52 0x30, /* Lower -> Left | Right */ |
|
53 0x0C, /* Left -> Upper | Lower */ |
|
54 0x0C, /* Right -> Upper | Lower */ |
|
55 }; |
|
56 |
|
57 /* Maps a trackdir to the (4-way) direction the tile is exited when following |
|
58 * that trackdir */ |
|
59 const DiagDirection _trackdir_to_exitdir[] = { |
|
60 0,1,0,1,2,1, 0,0, |
|
61 2,3,3,2,3,0, |
|
62 }; |
|
63 |
|
64 const Trackdir _track_exitdir_to_trackdir[][DIAGDIR_END] = { |
|
65 {0, 0xff, 8, 0xff}, |
|
66 {0xff, 1, 0xff, 9}, |
|
67 {2, 0xff, 0xff, 10}, |
|
68 {0xff, 3, 11, 0xf}, |
|
69 {0xff, 0xff, 4, 12}, |
|
70 {13, 5, 0xff, 0xff} |
|
71 }; |
|
72 |
|
73 const Trackdir _track_direction_to_trackdir[][DIR_END] = { |
|
74 {0xff, 0, 0xff, 0xff, 0xff, 8, 0xff, 0xff}, |
|
75 {0xff, 0xff, 0xff, 1, 0xff, 0xff, 0xff, 9}, |
|
76 {0xff, 0xff, 2, 0xff, 0xff, 0xff, 10, 0xff}, |
|
77 {0xff, 0xff, 3, 0xff, 0xff, 0xff, 11, 0xff}, |
|
78 {12, 0xff, 0xff, 0xff, 4, 0xff, 0xff, 0xff}, |
|
79 {13, 0xff, 0xff, 0xff, 5, 0xff, 0xff, 0xff} |
|
80 }; |
|
81 |
|
82 const Trackdir _dir_to_diag_trackdir[] = { |
|
83 0, 1, 8, 9, |
|
84 }; |
|
85 |
|
86 const DiagDirection _reverse_diagdir[] = { |
|
87 2, 3, 0, 1 |
|
88 }; |
|
89 |
|
90 const Trackdir _reverse_trackdir[] = { |
|
91 8, 9, 10, 11, 12, 13, 0xFF, 0xFF, |
|
92 0, 1, 2, 3, 4, 5 |
|
93 }; |