//
//
// stairs
//
//
/// <summary>
/// Builds a new stair
/// </summary>
/// <param name="loc"></param>
/// <param name="test">true to just check if it can be built.</param>
/// <returns>true if it was/can be built.</returns>
private bool createStair(Location loc, bool test)
{
ThinPlatform.RailRoadImpl rr = ThinPlatform.RailRoadImpl.get(loc);
if (rr == null)
{
return(false);
}
ThinPlatform.RailRoadImpl nrr, prr;
nrr = ThinPlatform.RailRoadImpl.get(loc + rr.direction);
prr = ThinPlatform.RailRoadImpl.get(loc - rr.direction);
if (nrr != null && nrr.outlook is ThinPlatform.PassagewayPlatform)
{
// TODO correctly compute the roof
if (!test)
{
rr.outlook = new ThinPlatform.StairPlatform(true);
}
return(true);
}
if (prr != null && prr.outlook is ThinPlatform.PassagewayPlatform)
{
// TODO correctly compute the roof
if (!test)
{
rr.outlook = new ThinPlatform.StairPlatform(false);
}
return(true);
}
return(false);
}
private static bool canBuildPassageway(Location loc1, Location loc2)
{
if (loc1 == loc2)
{
return(false);
}
Direction dd = loc1.getDirectionTo(loc2); // direction
Debug.Assert(dd.isSharp);
while (true)
{
ThinPlatform.RailRoadImpl rr = ThinPlatform.RailRoadImpl.get(loc1);
if (World.world[loc1] == null || // unused voxel == can be used in any way
(rr != null && Direction.angle(rr.direction, dd) == 2)) // orthogonal platform.
{
if (loc1 == loc2)
{
return(true); // all voxels satisfy the constraint
}
loc1 = loc1.toward(loc2);
continue;
}
return(false); // otherwise fail
}
}
// remove any passageway
private static void removePassageway(Location loc1, Location loc2)
{
// on each voxel along the way
for (Location loc = loc1; ; loc = loc.toward(loc2))
{
TrafficVoxel tv = TrafficVoxel.get(loc);
if (tv != null && tv.railRoad is ThinPlatform.RailRoadImpl)
{
ThinPlatform.RailRoadImpl rr = (ThinPlatform.RailRoadImpl)tv.railRoad;
if (rr.outlook is ThinPlatform.PassagewayPlatform)
{
// retore the normal platform.
rr.outlook = ThinPlatform.plainPlatform;
}
}
else
{
// TODO: open-ended bridge
}
if (loc == loc2)
{
// TODO: correctly updated voxels
World.world.onAllVoxelUpdated();
return;
}
}
}
private void removeStair(Location loc)
{
ThinPlatform.RailRoadImpl rr = ThinPlatform.RailRoadImpl.get(loc);
if (rr != null && rr.outlook is ThinPlatform.StairPlatform)
{
rr.outlook = ThinPlatform.plainPlatform;
}
}
private static void buildPassageway(Location loc1, Location loc2)
{
Direction dd = loc1.getDirectionTo(loc2); // direction
Debug.Assert(dd.isSharp);
// on each voxel along the way
for (Location loc = loc1; ; loc = loc.toward(loc2))
{
TrafficVoxel tv = TrafficVoxel.get(loc);
if (tv != null)
{
if (tv.railRoad is ThinPlatform.RailRoadImpl)
{
ThinPlatform.RailRoadImpl rr = (ThinPlatform.RailRoadImpl)tv.railRoad;
if (rr.outlook is ThinPlatform.PassagewayPlatform)
{
ThinPlatform.PassagewayPlatform ppp = (ThinPlatform.PassagewayPlatform)rr.outlook;
if (ppp.hasBridge)
{
// if the passageway always has a bridge, keep it.
}
else
{
// if it has a partial passageway, make a bridge for it.
rr.outlook = new ThinPlatform.PassagewayPlatform(true);
}
}
else
{
// leave the end un-bridged.
rr.outlook = new ThinPlatform.PassagewayPlatform(
!((loc == loc1) && (dd.right90 == rr.direction) || (loc == loc2) && (dd.left90 == rr.direction)));
}
}
else
{
// TODO: open-ended bridge
}
}
else
{
// TODO: allow passageway to go over unused grounds
}
if (loc == loc2)
{
return;
}
}
}
