/// <summary>
/// Get the flow as a direction vector.
/// </summary>
public static Vector3i Direction(this VerticalFlow flow)
{
return(flow switch
{
VerticalFlow.Upwards => (0, 1, 0),
VerticalFlow.Static => (0, 0, 0),
VerticalFlow.Downwards => (0, -1, 0),
_ => (0, 0, 0)
});
private bool FlowVertical(World world, Vector3i position, IFillable?currentFillable, LiquidLevel level,
VerticalFlow flow, bool handleContact, out int remaining)
{
(BlockInstance? blockVertical, LiquidInstance? liquidVertical) = world.GetContent(
position + flow.Direction());
if (blockVertical?.Block is IFillable verticalFillable &&
verticalFillable.AllowInflow(
world,
position + flow.Direction(),
flow.EntrySide(),
this) &&
(currentFillable?.AllowOutflow(world, position, flow.ExitSide()) ??
true))
{
if (liquidVertical?.Liquid == None)
{
SetLiquid(world, this, level, isStatic: false, verticalFillable, position + flow.Direction());
SetLiquid(world, None, LiquidLevel.Eight, isStatic: true, currentFillable, position);
ScheduleTick(world, position + flow.Direction());
remaining = -1;
return(true);
}
if (liquidVertical?.Liquid == this)
{
if (liquidVertical.Level == LiquidLevel.Eight)
{
remaining = (int)level;
return(false);
}
int volume = LiquidLevel.Eight - liquidVertical.Level - 1;
if (volume >= (int)level)
{
SetLiquid(
world,
this,
liquidVertical.Level + (int)level + 1,
isStatic: false,
verticalFillable,
position + flow.Direction());
SetLiquid(world, None, LiquidLevel.Eight, isStatic: true, currentFillable, position);
remaining = -1;
}
else
{
SetLiquid(
world,
this,
LiquidLevel.Eight,
isStatic: false,
verticalFillable,
position + flow.Direction());
SetLiquid(world, this, level - volume - 1, isStatic: false, currentFillable, position);
remaining = (int)(level - volume - 1);
ScheduleTick(world, position);
}
if (liquidVertical.IsStatic)
{
ScheduleTick(world, position + flow.Direction());
}
return(true);
}
if (handleContact && liquidVertical != null)
{
remaining = (int)level;
return(ContactManager.HandleContact(
world,
this.AsInstance(level),
position,
liquidVertical,
position + flow.Direction()));
}
}
remaining = (int)level;
return(false);
}
