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(svn r2456) * Prettyfied npf.c using enums and wrappers from rail.h.

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* Moved GetTileRailType() from npf.c to rail.[ch].
This commit is contained in:
matthijs
2005-06-17 17:11:05 +00:00
parent 6f6153fcf6
commit 84655ddb15
3 changed files with 78 additions and 62 deletions
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37
rail.c
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@@ -1,6 +1,7 @@
#include "stdafx.h"
#include "openttd.h"
#include "rail.h"
#include "station.h"
/* XXX: Below 3 tables store duplicate data. Maybe remove some? */
/* Maps a trackdir to the bit that stores its status in the map arrays, in the
@@ -95,3 +96,39 @@ const Trackdir _reverse_trackdir[] = {
TRACKDIR_DIAG1_SW, TRACKDIR_DIAG2_NW, TRACKDIR_UPPER_W, TRACKDIR_LOWER_W, TRACKDIR_LEFT_N, TRACKDIR_RIGHT_N, INVALID_TRACKDIR, INVALID_TRACKDIR,
TRACKDIR_DIAG1_NE, TRACKDIR_DIAG2_SE, TRACKDIR_UPPER_E, TRACKDIR_LOWER_E, TRACKDIR_LEFT_S, TRACKDIR_RIGHT_S
};
RailType GetTileRailType(TileIndex tile, byte trackdir)
{
RailType type = INVALID_RAILTYPE;
switch (GetTileType(tile)) {
case MP_RAILWAY:
/* railway track */
type = _map3_lo[tile] & RAILTYPE_MASK;
break;
case MP_STREET:
/* rail/road crossing */
if (IsLevelCrossing(tile))
type = _map3_hi[tile] & RAILTYPE_MASK;
break;
case MP_STATION:
if (IsTrainStationTile(tile))
type = _map3_lo[tile] & RAILTYPE_MASK;
break;
case MP_TUNNELBRIDGE:
/* railway tunnel */
if ((_map5[tile] & 0xFC) == 0) type = _map3_lo[tile] & RAILTYPE_MASK;
/* railway bridge ending */
if ((_map5[tile] & 0xC6) == 0x80) type = _map3_lo[tile] & RAILTYPE_MASK;
/* on railway bridge */
if ((_map5[tile] & 0xC6) == 0xC0 && ((DiagDirection)(_map5[tile] & 0x1)) == (TrackdirToExitdir(trackdir) & 0x1))
type = (_map3_lo[tile] >> 4) & RAILTYPE_MASK;
/* under bridge (any type) */
if ((_map5[tile] & 0xC0) == 0xC0 && (_map5[tile] & 0x1) != (trackdir & 0x1))
type = _map3_lo[tile] & RAILTYPE_MASK;
break;
default:
break;
}
return type;
}