public TileHit Scan(Vector2Int gridStartPosition, DirectionEnum _direction, int _radius, TileMapLayer _buildingLayer, IChecker _checker)
{
startPosition = gridStartPosition;
radius = _radius;
buildingLayer = _buildingLayer;
checker = _checker;
direction = _direction;
TileSlot currentTile = gridManager.GetTileFromGrid(startPosition, buildingLayer);
if (currentTile != null && checker.CheckTile(currentTile))
{
return(new TileHit(currentTile, startPosition));
}
for (int i = 1; i <= radius; i++)
{
TileHit tileHit = GetClosestTileInSquare(i);
if (tileHit != null)
{
return(tileHit);
}
}
return(null);
}
private TileHit[] GetAllTilesInSquare(int distanceFromCenter)
{
List <TileHit> tiles = new List <TileHit>();
int numOfTiles = 8 * distanceFromCenter;
Vector2Int relativeCheckPosition;
switch (direction)
{
case DirectionEnum.Up:
relativeCheckPosition = new Vector2Int(0, 1) * distanceFromCenter;
break;
case DirectionEnum.Down:
relativeCheckPosition = new Vector2Int(0, -1) * distanceFromCenter;
break;
case DirectionEnum.Left:
relativeCheckPosition = new Vector2Int(-1, 0) * distanceFromCenter;
break;
case DirectionEnum.Right:
relativeCheckPosition = new Vector2Int(1, 0) * distanceFromCenter;
break;
default:
relativeCheckPosition = new Vector2Int(0, 1) * distanceFromCenter;
Debug.LogError("Added new not existing direction, this is not a 3d game...");
break;
}
DirectionEnum currentDirection = direction;
for (int i = 0; i < numOfTiles; i++)
{
//Check tile
TileSlot currentTile = gridManager.GetTileFromGrid(relativeCheckPosition + startPosition, buildingLayer);
if (currentTile != null && checker.CheckTile(currentTile))
{
tiles.Add(new TileHit(currentTile, relativeCheckPosition + startPosition));
}
//Check if at corner
if (Mathf.Abs(relativeCheckPosition.x) == Mathf.Abs(relativeCheckPosition.y))
{
switch (currentDirection)
{
case DirectionEnum.Up:
currentDirection = DirectionEnum.Right;
break;
case DirectionEnum.Down:
currentDirection = DirectionEnum.Left;
break;
case DirectionEnum.Left:
currentDirection = DirectionEnum.Up;
break;
case DirectionEnum.Right:
currentDirection = DirectionEnum.Down;
break;
}
}
//Update position
switch (currentDirection)
{
case DirectionEnum.Up:
relativeCheckPosition += new Vector2Int(1, 0);
break;
case DirectionEnum.Down:
relativeCheckPosition += new Vector2Int(-1, 0);
break;
case DirectionEnum.Left:
relativeCheckPosition += new Vector2Int(0, 1);
break;
case DirectionEnum.Right:
relativeCheckPosition += new Vector2Int(0, -1);
break;
}
}
return(tiles.ToArray());
}