bool Player::GetPath(vector<Point> & OutPath,Point Start, Point End, int MaxRange){
OutPath.clear();
if (Start == End){
OutPath.push_back(Start);
return true;
}
Array2d<bool> HasPassed(false);
struct Path{
Point P;
Path * LastPath;
Path(){ LastPath = NULL; }
Path(Point InP, Path * InLastPath){
P = InP;
LastPath = InLastPath;
};
void PushPath(vector<Point> & OutPath){
if (LastPath != NULL)
LastPath->PushPath(OutPath);
OutPath.push_back(P);
}
};
vector<vector<Path>> Paths(MaxRange);
//sets the original point in the vector
Paths[0].push_back(Path(Start, NULL));
for (int r = 0; r < MaxRange - 1; r++){
vector<Path> & PrevPath = Paths[r];
vector<Path> & CurPath = Paths[r+1];
for (Path & PPath : PrevPath){
for (Point NewP:SquareIterate(PPath.P, 1)){
//not necessary, but possibly a more efficient alternative to the bool array method
//bool IsFurthurFromDest = GetBoardDistance(NewP, Start) >= GetBoardDistance(PPath.P, Start);
//bool IsCloserToEnd = GetBoardDistance(NewP, End) <= GetBoardDistance(PPath.P, End);
if (!HasPassed[NewP] && BlankPoint(NewP)){// && (IsFurthurFromDest || IsCloserToEnd)){
HasPassed[NewP] = true;
CurPath.push_back(Path(NewP, &PPath));
if (NewP == End){
Path NewPath = Path(NewP, &PPath);
NewPath.PushPath(OutPath);
return true;
}
}
}
}
}
return false;
}
void PushPath(vector<Point> & OutPath){
if (LastPath != NULL)
LastPath->PushPath(OutPath);
OutPath.push_back(P);
}