/* Removes this Entity from the grid without changing its Grid reference.
* NOTE: Sideline is not a real list, its just an idea.
* Useful for important Entities like Geners and Solvers that you need to keep instantiated.
*
* PRECONDITION: Grid is not null
* POSTCONDITION: location == null and Grid does not contain this.
*/
public void MoveToSideline()
{
if (Location != null)
{
Grid.Remove(Location);
}
}
/* Moves this Entity to another Location within the Grid.
* Removes whatever was at its original position.
* Returns the Entity that was originally occupying that Location, null if there was nothing there.
*
* PRECONDITION: Grid and Location != null;
* PARAMETER: grid.IsValid(x, y) == true;
* POSTCONDITION: grid.Get(x, y) == this;
* POSTCONDITION: grid.Get(oldLoc) == null;
*/
public Entity MoveTo(int x, int y)
{
if (Grid.IsValid(x, y))
{
Grid.Remove(Location);
this.Location = new Location(x, y);
return(Grid.Set(this, this.Location));
}
else
{
throw new Exception("Location " + x + ", " + y + "was invalid!");
}
}
/* At each step, all CurrentMinions spawn new Minions in all the open spots adjacent to them.
* These new RecruitMinions then replace the CurrentMinions, and CurrentMinions become Cells
* All cells also update their color pattern to reflect distance traveled.
*/
private void StepWithMinions()
{
foreach (BFSminion m in this.CurrentMinions)
{
foreach (Location l in m.masterAct())
{
this.addMinion(l);
}
Location minionLoc = m.Location;
BFScell bCell = new BFScell(Grid, minionLoc, this);
Cells.Add(bCell);
}
foreach (BFScell b in Cells)
{
b.UpdateColors();
}
this.killMinions();
this.Steps++;
if (this.CurrentMinions.Count() == 0)
{
if (!(Grid.Get(Target) is BFSminion || Grid.Get(Target) is BFScell))
{
Grid.Reset();
CurrentMinions.Clear();
RecruitMinions.Clear();
Cells.Clear();
Phase = 1;
Steps = 0;
return;
}
this.Phase++;
Grid.Remove(Location);
MoveTo(Target);
}
}
/* Removes all references of this object so it can be garbage collected.
*
* PRECONDITION: grid and location are != null;
* POSTCONDITION: grid.Get(location) == null;
*/
public void RemoveSelfFromGrid()
{
Grid.Remove(Location);
this.ForceGridChange(null);
}