public byte neighbors; // bitmask indicating which sides have neighbors
public void AddNeighbor(ref SelectionTile other)
{
IVector3 delta = other.center - center;
// Left-handed coordinate system means +x is to the left when +z points out of surface
if (delta.x == -SIDE_CM && delta.y == 0)
{
neighbors |= (byte)Edge.Right;
other.neighbors |= (byte)Edge.Left;
}
else if (delta.x == +SIDE_CM && delta.y == 0)
{
neighbors |= (byte)Edge.Left;
other.neighbors |= (byte)Edge.Right;
}
else if (delta.x == 0 && delta.y == +SIDE_CM)
{
neighbors |= (byte)Edge.Top;
other.neighbors |= (byte)Edge.Bottom;
}
else if (delta.x == 0 && delta.y == -SIDE_CM)
{
neighbors |= (byte)Edge.Bottom;
other.neighbors |= (byte)Edge.Top;
}
}
//TODO: this is really pretty terrible
private void RemoveExcessTiles()
{
while (m_tiles.Count > m_maxTiles)
{
IVector3 position = m_tiles[0].center;
// Remove tile 0 and unlink it from neighbors
for (int i = 1; i < m_tiles.Count; i++)
{
SelectionTile tmp = m_tiles[i];
tmp.RemoveNeighbor(position);
m_tiles[i] = tmp;
}
m_tiles.RemoveAt(0);
}
}
private void AddTile(IVector3 position)
{
SelectionTile tile = new SelectionTile(position);
for (int i = 0; i < m_tiles.Count; i++)
{
if (tile.center == m_tiles[i].center)
{
return;
}
SelectionTile tmp = m_tiles[i]; // annoyingly, [] is a function call that returns a copy
tmp.AddNeighbor(ref tile);
m_tiles[i] = tmp; // write back to list
}
m_tiles.Add(tile);
}
/// <summary>
/// Selects the specified tile.
/// Raises the TileSelected event using the passed tile.
/// </summary>
/// <param name="tile">The tile to select.</param>
public void SelectTile(SelectionTile tile)
{
OnTileSelected(new TileSelectedArgs(tile.Address));
}
void Awake(){
instance = this;
}
