public ColoredChar GetChar(int row, int col, Action <IEnumerable <Collision> > hit = null)
{
if (row - Row < 0 || row - Row >= Height)
{
throw new ArgumentException($"row must be between 0 and {Height - 1}");
}
if (col - Col < 0 || col - Col >= Width)
{
throw new ArgumentException($"col must be between 0 and {Width - 1}");
}
ColoredChar currChar = new ColoredChar
{
Background = Background
};
lock (Sprites)
{
Dictionary <int, Collision> collisionTable = null;
if (hit != null)
{
collisionTable = new Dictionary <int, Collision>();
}
foreach (var sprite in Sprites)
{
if (sprite.Contains(row - Row, col - Col))
{
var spriteChar = sprite.GetChar(row - Row, col - Col);
currChar.Import(spriteChar, currChar.Background);
if (collisionTable != null && spriteChar != null && !spriteChar.IsNull)
{
// Builds the collision table
if (!collisionTable.ContainsKey(sprite.ZIndex))
{
collisionTable.Add(ZIndex, new Collision());
}
collisionTable[sprite.ZIndex].Add(sprite);
}
}
}
if (hit != null)
{
var collisions =
from c in collisionTable.Values
where c.Count > 1
select c;
if (collisions.Count() > 0)
{
hit(collisions);
}
}
}
return(currChar);
}
public void Import(ColoredChar other, ConsoleColor background)
{
if (other == null)
{
return;
}
Foreground = other.Foreground;
Char = other.Char;
Background = other.Background;
if (Background == ConsoleColor.Black)
{
if (other.Background == ConsoleColor.Black)
{
Background = background;
}
}
}