//returns the number of tiles that were toggled.
private bool ToggleAdjacent(GridTile clicked, Direction direction)
{
GridTile adjacent = clicked.GetAdjacentTile(direction);
if (adjacent == null)
{
return(false);
}
if (adjacent.state == TileState.NULL)
{
return(false);
}
//depending on current direction, if tile doesn't contain opposite direction, then break
//since it doesn't connect
switch (direction)
{
case Direction.EAST:
if (!adjacent.directions.Contains(Direction.WEST))
{
return(false);
}
break;
case Direction.NORTH:
if (!adjacent.directions.Contains(Direction.SOUTH))
{
return(false);
}
break;
case Direction.WEST:
if (!adjacent.directions.Contains(Direction.EAST))
{
return(false);
}
break;
case Direction.SOUTH:
if (!adjacent.directions.Contains(Direction.NORTH))
{
return(false);
}
break;
}
//when any tile turns off, we need to collapse ALL the connections between it and any other tile.
adjacent.Toggle();
//fire bullet between clicked and adjacent.
//state of clicked tile won't update until after loop finishes (since toggling state of clicked conditonal
//on toggling state of at least one other grid tile) so we just preview the next state here.
//(i.e., we know that clicked will toggle state, since if we're here then clicked toggled something)
TileState clickedTileNextState = clicked.state == TileState.OFF ? TileState.ON : TileState.OFF;
Bullet fired = null;
if (adjacent.state == TileState.ON)
{
fired = Bullet.FireBulletFromTo(clicked.gameObject, adjacent.gameObject);
}
if (adjacent.state == TileState.OFF && clickedTileNextState == TileState.ON)
{
fired = Bullet.FireBulletFromTo(adjacent.gameObject, clicked.gameObject);
}
if (fired != null)
{
fired.transform.position += (fired.Trajectory * clicked.GetComponent <SpriteRenderer>().size.x / 2);
}
return(true);
}
