public Edge(Game game, Node startNode = null, Node endNode = null, int cost = 1)
{
m_startNode = new Node(game);
m_startNode = startNode;
m_endNode = new Node(game);
m_endNode = endNode;
m_cost = cost;
}
public void AndrewBreadthFirst(Node start, Node target)
{
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < columns; j++)
{
nodes[i, j].distance = Int32.MaxValue;
nodes[i, j].backPtr = null;
}
}
Queue<Node> myQueue = new Queue<Node>();
start.distance = 0;
myQueue.Enqueue(start);
while (myQueue.Count != 0)
{
currentNode = myQueue.Dequeue();
currentNode.setColor(Color.Yellow);
if (currentNode.iValue == target.iValue && currentNode.jValue == target.jValue)
{
break;
}
currentNode.getEdges(this);
while (currentNode.neighborStack.Count != 0)
{
currentNeighbor = currentNode.neighborStack.Pop();
if (currentNeighbor.distance == Int32.MaxValue)
{
currentNeighbor.distance = currentNode.distance + 1;
currentNeighbor.backPtr = currentNode;
myQueue.Enqueue(currentNeighbor);
currentNeighbor.setColor(Color.Orange);
}
}
}
while (currentNode != start)
{
currentNode.setColor(Color.Pink);
currentNode = currentNode.backPtr;
}
start.setColor(Color.Red);
target.setColor(Color.Green);
}
public void initialize(GraphicsDeviceManager graphicsDM, int gridSize, Game myGame, SpriteBatch sb)
{
spriteBatch = sb;
graphics = graphicsDM;
cellSize = gridSize;
game = myGame;
rows = graphics.PreferredBackBufferWidth / cellSize;
columns = graphics.PreferredBackBufferHeight / cellSize;
nodes = new Node[rows, columns];
nodeQueue = new Queue<Node>();
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < columns; j++)
{
nodes[i, j] = new Node(game, i, j);
nodes[i, j].setIJvalue(i, j);
nodes[i, j].setLocation(i * gridSize, j * gridSize);
nodes[i, j].setSize(gridSize, gridSize);
}
}
}
