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De-duplicate ship entry to exit direction map table

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This commit is contained in:
HackaLittleBit
2018-01-25 18:22:53 +00:00
committed by Jonathan G Rennison
parent c5888dad9f
commit 828e9bece2
3 changed files with 5 additions and 13 deletions
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2
src/pathfinder/opf/opf_ship.cpp
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@@ -121,7 +121,7 @@ static void OPFShipFollowTrack(TileIndex tile, DiagDirection direction, TrackPat
}
/** Directions to search towards given track bits and the ship's enter direction. */
static const DiagDirection _ship_search_directions[6][4] = {
extern const DiagDirection _ship_search_directions[6][4] = {
{ DIAGDIR_NE, INVALID_DIAGDIR, DIAGDIR_SW, INVALID_DIAGDIR },
{ INVALID_DIAGDIR, DIAGDIR_SE, INVALID_DIAGDIR, DIAGDIR_NW },
{ INVALID_DIAGDIR, DIAGDIR_NE, DIAGDIR_NW, INVALID_DIAGDIR },

2
src/ship.h
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@@ -15,6 +15,8 @@
#include "vehicle_base.h"
#include "water_map.h"
extern const DiagDirection _ship_search_directions[TRACK_END][DIAGDIR_END];
void GetShipSpriteSize(EngineID engine, uint &width, uint &height, int &xoffs, int &yoffs, EngineImageType image_type);
WaterClass GetEffectiveWaterClass(TileIndex tile);

14
src/ship_cmd.cpp
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@@ -509,16 +509,6 @@ static const byte _ship_subcoord[4][6][3] = {
}
};
/* Used for finding tile exit direction using the enter direction and following track */
static const DiagDirection _diagdir_tile_exit[TRACK_END][DIAGDIR_END] = {
{ DIAGDIR_NE , INVALID_DIAGDIR, DIAGDIR_SW , INVALID_DIAGDIR}, // TRACK_X = 0
{ INVALID_DIAGDIR, DIAGDIR_SE , INVALID_DIAGDIR, DIAGDIR_NW }, // TRACK_Y = 1
{ INVALID_DIAGDIR, DIAGDIR_NE , DIAGDIR_NW , INVALID_DIAGDIR}, // TRACK_UPPER = 2
{ DIAGDIR_SE , INVALID_DIAGDIR, INVALID_DIAGDIR, DIAGDIR_SW }, // TRACK_LOWER = 3
{ DIAGDIR_NW , DIAGDIR_SW , INVALID_DIAGDIR, INVALID_DIAGDIR}, // TRACK_LEFT = 4
{ INVALID_DIAGDIR, INVALID_DIAGDIR, DIAGDIR_SE , DIAGDIR_NE } // TRACK_RIGHT = 5
};
struct ShipCollideChecker {
TrackBits track_bits; ///< Trackbits (track that was chosen by the pathfinder converted in trackbits.) .
@@ -556,7 +546,7 @@ static void CheckDistanceBetweenShips(TileIndex tile, Ship *v, TrackBits tracks,
Track track = *track_old;
TileIndex tile_plus_one = TileAddByDiagDir(tile, _diagdir_tile_exit[track][diagdir]);
TileIndex tile_plus_one = TileAddByDiagDir(tile, _ship_search_directions[track][diagdir]);
if (!IsValidTile(tile_plus_one)) tile_plus_one = tile;
ShipCollideChecker scc;
@@ -579,7 +569,7 @@ static void CheckDistanceBetweenShips(TileIndex tile, Ship *v, TrackBits tracks,
case TRACK_BIT_3WAY_NW: track == TRACK_UPPER ? track = TRACK_Y : track = TRACK_LEFT; break;
}
/* Don't bump in coast, don't get stuck. */
if (track != *track_old && !IsWaterTile(TileAddByDiagDir(tile, _diagdir_tile_exit[track][diagdir]))) return;
if (track != *track_old && !IsWaterTile(TileAddByDiagDir(tile, _ship_search_directions[track][diagdir]))) return;
*track_old = track;
}
}