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(svn r3900) When clearing a bridge determine the bridge direction and tile offset once instead of all over the place; also use UpdateSignalsOnSegment() instead of SetSignalsOnBothDir(), because this is sufficient

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This commit is contained in:
tron
2006-03-16 06:30:47 +00:00
parent 8a77808f65
commit fedebdd09b
1 changed files with 13 additions and 18 deletions
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31
tunnelbridge_cmd.c
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@@ -624,15 +624,14 @@ static TileIndex FindEdgesOfBridge(TileIndex tile, TileIndex *endtile)
static int32 DoClearBridge(TileIndex tile, uint32 flags)
{
DiagDirection direction;
TileIndexDiff delta;
TileIndex endtile;
Vehicle *v;
Town *t;
Axis direction;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
direction = GB(_m[tile].m5, 0, 1);
if (IsBridgeMiddle(tile)) {
if (IsTransportUnderBridge(tile)) {
/* delete transport route under the bridge */
@@ -677,23 +676,24 @@ static int32 DoClearBridge(TileIndex tile, uint32 flags)
if (!EnsureNoVehicle(tile) || !EnsureNoVehicle(endtile)) return CMD_ERROR;
direction = GetBridgeRampDirection(tile);
delta = TileOffsByDir(direction);
/* Make sure there's no vehicle on the bridge
Omit tile and endtile, since these are already checked, thus solving the problem
of bridges over water, or higher bridges, where z is not increased, eg level bridge
*/
tile += (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
endtile -= (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
/* Bridges on slopes might have their Z-value offset..correct this */
v = FindVehicleBetween(tile, endtile, TilePixelHeight(tile) + 8 + GetCorrectTileHeight(tile));
v = FindVehicleBetween(
tile + delta,
endtile - delta,
TilePixelHeight(tile) + 8 + GetCorrectTileHeight(tile)
);
if (v != NULL) {
VehicleInTheWayErrMsg(v);
return CMD_ERROR;
}
/* Put the tiles back to start/end position */
tile -= (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
endtile += (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
t = ClosestTownFromTile(tile, (uint)-1); //needed for town rating penalty
// check if you're allowed to remove the bridge owned by a town.
// removal allowal depends on difficulty settings
@@ -702,7 +702,6 @@ static int32 DoClearBridge(TileIndex tile, uint32 flags)
}
if (flags & DC_EXEC) {
TileIndexDiff delta = (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
TileIndex c;
//checks if the owner is town then decrease town rating by RATING_TUNNEL_BRIDGE_DOWN_STEP until
@@ -739,15 +738,11 @@ static int32 DoClearBridge(TileIndex tile, uint32 flags)
}
}
SetSignalsOnBothDir(tile, direction == AXIS_X ? TRACK_X : TRACK_Y);
SetSignalsOnBothDir(endtile, direction == AXIS_X ? TRACK_X : TRACK_Y);
UpdateSignalsOnSegment(tile, ReverseDiagDir(direction));
UpdateSignalsOnSegment(endtile, direction);
}
if (direction == AXIS_X) {
return (TileX(endtile) - TileX(tile) + 1) * _price.clear_bridge;
} else {
return (TileY(endtile) - TileY(tile) + 1) * _price.clear_bridge;
}
return (DistanceManhattan(tile, endtile) + 1) * _price.clear_bridge;
}
static int32 ClearTile_TunnelBridge(TileIndex tile, byte flags)