#openttdcoop

used the same way as for railtypes
    ROTSG_CURSORS,                -> similar order as for railtypes, keep compatibility to tram action5, append more sprites at the end
    ROTSG_OVERLAY,                -> identical to tram action5
    ROTSG_GROUND,                 -> identical to tram action5
    ROTSG_BRIDGE,                 -> identical to tram action5 and identical to railtypes
    ROTSG_DEPOT,                  -> identical to tram action5 and identical to railtypes

replaced by others:
    ROTSG_WIRES,
    ROTSG_PYLONS,

unused, remove:
    ROTSG_TUNNEL,                 -> use regular underlay/overlay
    ROTSG_CROSSING,               -> provided by railtype
    ROTSG_FENCES,                 -> does not exit
    ROTSG_TUNNEL_PORTAL,          -> makes no sense for roadtypes

catenary groups:
    ROTSG_CATENARY_FRONT
    ROTSG_CATENARY_BACK
      -> bits, same as overlay/underlay
      -> tunnel (follows regular sprites, same as for railtypes)
      -> bridge (does not exist for railtypes)

0 ⠢  gui Y                      ROTSG_CURSORS +  0
  1 ⠔  gui X                      ROTSG_CURSORS +  1
new    gui autoread               ROTSG_CURSORS +  2
new    gui depot                  ROTSG_CURSORS +  3
new    gui tunnel                 ROTSG_CURSORS +  4
new    gui convert road           ROTSG_CURSORS +  5

2 ⠢  cursor Y                   ROTSG_CURSORS +  6
  3 ⠔  cursor X                   ROTSG_CURSORS +  7 
new    cursor autoread            ROTSG_CURSORS +  8
new    cursor depot               ROTSG_CURSORS +  9
new    cursor tunnel              ROTSG_CURSORS + 10
new    cursor convert road        ROTSG_CURSORS + 11

note:  no roadtype specific graphics for roadstops

4 ⠢  overlay                    ROTSG_OVERLAY +  0
  5 ⠔  overlay                    ROTSG_OVERLAY +  1
  6 ⠶  overlay                    ROTSG_OVERLAY +  2
  7 ⠲  overlay                    ROTSG_OVERLAY +  3
  8 ⠖  overlay                    ROTSG_OVERLAY +  4
  9 ⠦  overlay                    ROTSG_OVERLAY +  5
 10 ⠴  overlay                    ROTSG_OVERLAY +  6
 11 ⠆  overlay                    ROTSG_OVERLAY +  7
 12 ⠒  overlay                    ROTSG_OVERLAY +  8
 13 ⠰  overlay                    ROTSG_OVERLAY +  9
 14 ⠤  overlay                    ROTSG_OVERLAY + 10
 15 NE overlay                    ROTSG_OVERLAY + 11
 16 SE overlay                    ROTSG_OVERLAY + 12
 17 SW overlay                    ROTSG_OVERLAY + 13
 18 NW overlay                    ROTSG_OVERLAY + 14
 19 ⠐  overlay                    ROTSG_OVERLAY + 15
 20 ⠠  overlay                    ROTSG_OVERLAY + 16
 21 ⠄  overlay                    ROTSG_OVERLAY + 17
 22 ⠂  overlay                    ROTSG_OVERLAY + 18

23    unused
 24    unused
 25    unused
 26    unused

27 ⠢  underlay                   ROTSG_GROUND +  0
 28 ⠔  underlay                   ROTSG_GROUND +  1
 29 ⠶  underlay                   ROTSG_GROUND +  2
 30 ⠲  underlay                   ROTSG_GROUND +  3
 31 ⠖  underlay                   ROTSG_GROUND +  4
 32 ⠦  underlay                   ROTSG_GROUND +  5
 33 ⠴  underlay                   ROTSG_GROUND +  6
 34 ⠆  underlay                   ROTSG_GROUND +  7
 35 ⠒  underlay                   ROTSG_GROUND +  8
 36 ⠰  underlay                   ROTSG_GROUND +  9
 37 ⠤  underlay                   ROTSG_GROUND + 10
 38 NE underlay                   ROTSG_GROUND + 11
 39 SE underlay                   ROTSG_GROUND + 12
 40 SW underlay                   ROTSG_GROUND + 13
 41 NW underlay                   ROTSG_GROUND + 14
 42 ⠐  underlay                   ROTSG_GROUND + 15
 43 ⠠  underlay                   ROTSG_GROUND + 16
 44 ⠄  underlay                   ROTSG_GROUND + 17
 45 ⠂  underlay                   ROTSG_GROUND + 18

46    unused
 47    unused
 48    unused

49 ⠠  depot back                 ROTSG_DEPOT + 0
 50 ⠠  depot front                ROTSG_DEPOT + 1
 51 ⠄  depot back                 ROTSG_DEPOT + 2
 52 ⠄  depot front                ROTSG_DEPOT + 3
 53 ⠐  depot                      ROTSG_DEPOT + 4
 54 ⠂  depot                      ROTSG_DEPOT + 5

55    unused

56 ⠢  catenary front             ROTSG_CATENARY_FRONT +  0
 57 ⠔  catenary front             ROTSG_CATENARY_FRONT +  1
 58 ⠶  catenary front             ROTSG_CATENARY_FRONT +  2
 59 ⠲  catenary front             ROTSG_CATENARY_FRONT +  3
 60 ⠖  catenary front             ROTSG_CATENARY_FRONT +  4
 61 ⠦  catenary front             ROTSG_CATENARY_FRONT +  5
 62 ⠴  catenary front             ROTSG_CATENARY_FRONT +  6

63    unused

64 ⠆  catenary front             ROTSG_CATENARY_FRONT +  7
 65 ⠒  catenary front             ROTSG_CATENARY_FRONT +  8
 66 ⠰  catenary front             ROTSG_CATENARY_FRONT +  9
 67 ⠤  catenary front             ROTSG_CATENARY_FRONT + 10

68 NE catenary back              ROTSG_CATENARY_BACK  + 11
 69 SE catenary back              ROTSG_CATENARY_BACK  + 12
 70 SW catenary back              ROTSG_CATENARY_BACK  + 13
 71 NW catenary back              ROTSG_CATENARY_BACK  + 14

new ⠐  catenary back              ROTSG_CATENARY_BACK  + 15   -> same as 1 for action5
new ⠠  catenary back              ROTSG_CATENARY_BACK  + 16   -> same as 0 for action5
new ⠄  catenary back              ROTSG_CATENARY_BACK  + 17   -> same as 1 for action5
new ⠂  catenary back              ROTSG_CATENARY_BACK  + 18   -> same as 0 for action5

72 NE catenary front             ROTSG_CATENARY_FRONT + 11
 73 SE catenary front             ROTSG_CATENARY_FRONT + 12
 74 SW catenary front             ROTSG_CATENARY_FRONT + 13
 75 NW catenary front             ROTSG_CATENARY_FRONT + 14

new ⠐  catenary front             ROTSG_CATENARY_FRONT + 15   -> same as 1 for action5
new ⠠  catenary front             ROTSG_CATENARY_FRONT + 16   -> same as 0 for action5
new ⠄  catenary front             ROTSG_CATENARY_FRONT + 17   -> same as 1 for action5
new ⠂  catenary front             ROTSG_CATENARY_FRONT + 18   -> same as 0 for action5

76 ⠂  tunnel overlay             always use regular underlay/overlay?
 77 ⠐  tunnel overlay             always use regular underlay/overlay?
 78 ⠂  tunnel underlay            always use regular underlay/overlay?
 79 ⠐  tunnel underlay            always use regular underlay/overlay?

80 ⠄  catenary tunnel front      ROTSG_CATENARY_FRONT + 19
 81 ⠂  catenary tunnel front      ROTSG_CATENARY_FRONT + 20
 82 ⠐  catenary tunnel front      ROTSG_CATENARY_FRONT + 21
 83 ⠠  catenary tunnel front      ROTSG_CATENARY_FRONT + 22

??? ⠄  catenary tunnel back       ROTSG_CATENARY_BACK  + 19   -> unused placeholder, maybe used in future?
??? ⠂  catenary tunnel back       ROTSG_CATENARY_BACK  + 20   -> unused placeholder, maybe used in future?
??? ⠐  catenary tunnel back       ROTSG_CATENARY_BACK  + 21   -> unused placeholder, maybe used in future?
??? ⠠  catenary tunnel back       ROTSG_CATENARY_BACK  + 22   -> unused placeholder, maybe used in future?

84 ⠢  catenary back              ROTSG_CATENARY_BACK  +  0
 85 ⠔  catenary back              ROTSG_CATENARY_BACK  +  1
 86 ⠶  catenary back              ROTSG_CATENARY_BACK  +  2
 87 ⠲  catenary back              ROTSG_CATENARY_BACK  +  3
 88 ⠖  catenary back              ROTSG_CATENARY_BACK  +  4
 89 ⠦  catenary back              ROTSG_CATENARY_BACK  +  5
 90 ⠴  catenary back              ROTSG_CATENARY_BACK  +  6
 91 ⠆  catenary back              ROTSG_CATENARY_BACK  +  7
 92 ⠒  catenary back              ROTSG_CATENARY_BACK  +  8
 93 ⠰  catenary back              ROTSG_CATENARY_BACK  +  9
 94 ⠤  catenary back              ROTSG_CATENARY_BACK  + 10

95 ⠢  bridge catenary back       ROTSG_CATENARY_BACK  + 23
 96 ⠔  bridge catenary back       ROTSG_CATENARY_BACK  + 24

97 ⠢  bridge catenary front      ROTSG_CATENARY_FRONT + 23
 98 ⠔  bridge catenary front      ROTSG_CATENARY_FRONT + 24

99 NE bridge catenary back       ROTSG_CATENARY_BACK  + 25
100 SW bridge catenary back       ROTSG_CATENARY_BACK  + 26
101 NW bridge catenary back       ROTSG_CATENARY_BACK  + 27
102 SE bridge catenary back       ROTSG_CATENARY_BACK  + 28

103 NE bridge catenary front      ROTSG_CATENARY_FRONT + 25
104 SW bridge catenary front      ROTSG_CATENARY_FRONT + 26
105 NW bridge catenary front      ROTSG_CATENARY_FRONT + 27
106 SE bridge catenary front      ROTSG_CATENARY_FRONT + 28

107 ⠢  bridge underlay            ROTSG_BRIDGE +  0
108 ⠔  bridge underlay            ROTSG_BRIDGE +  1
109 NE bridge underlay            ROTSG_BRIDGE +  2
110 SE bridge underlay            ROTSG_BRIDGE +  3
111 SW bridge underlay            ROTSG_BRIDGE +  4
112 NW bridge underlay            ROTSG_BRIDGE +  5

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