/// <inheritdoc />
public override void RandomUpdate(World world, Vector3i position, uint data)
{
var orientation = (Orientation)(data & 0b00_0011);
var age = (int)((data & 0b1_1100) >> 2);
if (age < 7)
{
world.SetBlock(this.AsInstance((uint)(((age + 1) << 2) | (int)orientation)), position);
}
else if (world.GetBlock(position.Below())?.Block == Air)
{
world.SetBlock(this.AsInstance((uint)orientation), position.Below());
}
}
/// <summary>
/// Check if a given block is lowered exactly one height step.
/// </summary>
public static bool IsLowered(this World world, Vector3i position)
{
BlockInstance?below = world.GetBlock(position.Below());
return(below?.Block is IHeightVariable block &&
block.GetHeight(below.Data) == IHeightVariable.MaximumHeight - 1);
}
/// <inheritdoc />
public override void RandomUpdate(World world, Vector3i position, uint data)
{
var age = (int)(data & 0b00_0111);
if (age < 7)
{
world.SetBlock(this.AsInstance((uint)(age + 1)), position);
}
else
{
if (!(world.GetBlock(position.Above())?.Block.IsReplaceable ?? false))
{
return;
}
var height = 0;
for (var offset = 0; offset < maxHeight; offset++)
{
if (world.GetBlock(position.Below(offset))?.Block == this)
{
height++;
}
else
{
break;
}
}
if (height < maxHeight)
{
Place(world, position.Above());
}
}
}
/// <inheritdoc />
protected override void DoDestroy(World world, Vector3i position, uint data, PhysicsEntity?entity)
{
bool isBase = (data & 0b1) == 0;
world.SetDefaultBlock(position);
world.SetDefaultBlock(isBase ? position.Above() : position.Below());
}
/// <inheritdoc />
public override void BlockUpdate(World world, Vector3i position, uint data, BlockSide side)
{
// Check if this block is the lower part and if the ground supports plant growth.
if (side == BlockSide.Bottom && (data & 0b1) == 0 &&
(world.GetBlock(position.Below())?.Block ?? Air) is not IPlantable)
{
Destroy(world, position);
}
}
/// <inheritdoc />
public override void BlockUpdate(World world, Vector3i position, uint data, BlockSide side)
{
if (side == BlockSide.Bottom)
{
Block below = world.GetBlock(position.Below())?.Block ?? Air;
if (below != requiredGround && below != this)
{
ScheduleDestroy(world, position);
}
}
}
/// <summary>
/// Check if a given position has solid ground below it.
/// </summary>
public static bool HasSolidGround(this World world, Vector3i position, bool solidify = false)
{
Vector3i groundPosition = position.Below();
bool isSolid = world.IsSolid(groundPosition, out BlockInstance ground);
if (!solidify || isSolid || ground.Block is not IPotentiallySolid solidifiable)
{
return(isSolid);
}
solidifiable.BecomeSolid(world, groundPosition);
return(true);
}
/// <inheritdoc />
public override bool CanPlace(World world, Vector3i position, PhysicsEntity?entity)
{
Block down = world.GetBlock(position.Below())?.Block ?? Air;
return(down == requiredGround || down == this);
}
/// <inheritdoc />
public override bool CanPlace(World world, Vector3i position, PhysicsEntity?entity)
{
return(world.GetBlock(position.Above())?.Block.IsReplaceable == true &&
(world.GetBlock(position.Below())?.Block ?? Air) is IPlantable);
}