/// <summary>
/// Creates a new slope. A slope consists of four consective
/// blocks of railroads. The base parameter specifies the location
/// of the lowest railroad and the direction parameter
/// specifies the direction to climb.
///
/// The caller must use the canCreateSlope method to check
/// if this method can be invoked.
/// </summary>
public static void createSlope(Location _base, Direction dir)
{
Debug.Assert(canCreateSlope(_base, dir));
// charge the cost before we alter something
accounting.AccountGenre.RAIL_SERVICE.spend(calcCostOfNewSlope(_base, dir));
SlopeEntity entity = new SlopeEntity(_base, dir);
for (int i = 0; i < 4; i++)
{
if (_base.z < World.world.getGroundLevel(_base))
{
new SlopeRailRoad(entity, TrafficVoxel.getOrCreate(
_base.x, _base.y, _base.z + (i / 2)),
RailPattern.getUGSlope(dir, i));
if (i < 2)
{
// space filler
new SlopeFillerVoxel(entity, _base.x, _base.y, _base.z + 1, i);
}
else
{
new SlopeSupportVoxel(entity, _base.x, _base.y, _base.z, i,
RailPattern.slopeWalls[dir.index + i - 2]);
}
}
else
{
new SlopeRailRoad(entity, TrafficVoxel.getOrCreate(
_base.x, _base.y, _base.z + (i / 2)),
RailPattern.getSlope(dir, i));
if (i < 2)
{
// space filler
new SlopeFillerVoxel(entity, _base.x, _base.y, _base.z + 1, i);
}
else
{
new SlopeSupportVoxel(entity, _base.x, _base.y, _base.z, i,
RailPattern.slopeSupports[dir.index + (i - 2)]);
}
}
Type bridgeStyle;
if (dir == Direction.NORTH || dir == Direction.EAST)
{
bridgeStyle = typeof(BridgePierVoxel.DefaultImpl);
}
else
{
bridgeStyle = typeof(BridgePierVoxel.SlopeNEImpl);
}
BridgePierVoxel.electBridgeSupport(_base, bridgeStyle, entity);
_base += dir;
}
}
