static void Main(string[] args)
{
LoadMap();
Console.WriteLine("If you want to use default values for the agents, press <enter> to skip each value:");
_agentA = LoadAgent("A", 2, 2, 1);
_agentB = LoadAgent("B", 5, 7, 1);
// Draw
_map.Draw(_agentA, _agentB);
Console.ReadLine();
// Run until A catches B.
while (true)
{
// Make B avoid A
_agentB.Avoid(_agentA, _map);
// Make A chase B
_agentA.Chase(_agentB, _map);
// Draw the map
_map.Draw(_agentA, _agentB);
// Stop the loop if A has caught B.
if (_agentA.X == _agentB.X && _agentA.Y == _agentB.Y) break;
Console.ReadLine();
}
Console.WriteLine();
Console.WriteLine();
Console.WriteLine("Agent A has caught agent B at X:" + _agentA.X + " Y:" + _agentA.Y + "!");
Console.ReadLine();
}
/// <summary>
/// Simple way to avoid the target.
/// </summary>
/// <param name="target">The target to avoid.</param>
/// <param name="map">The map that the agent is traveling on.</param>
public void Avoid(Agent target, Map map)
{
var iterations = 0;
int newX = X, newY = Y;
var targetNode = map[target.X, target.Y];
var currentDist = map[X, Y].DistanceTo(targetNode);
// Only 10 steps are needed.
while (iterations < 20)
{
var neighbours = map.NeighbourNodes(map[newX, newY]);
// Check which neighbour node that leads furthest away from the target.
foreach (Node neighbour in neighbours)
{
if (neighbour.Closed) continue;
var tempDist = neighbour.DistanceTo(targetNode);
if (tempDist > currentDist)
{
currentDist = tempDist;
var optimalNeighbour = neighbours.IndexOf(neighbour);
newX = neighbours[optimalNeighbour].X;
newY = neighbours[optimalNeighbour].Y;
}
}
iterations++;
}
// Find the path to the target location.
Path = AStar.FindPathTo(map[X, Y], map[newX, newY], map);
Move();
}
/// <summary>
/// Chase the target using the aStar algorithm.
/// </summary>
/// <param name="target">The target to chase.</param>
/// <param name="map">The map the agent is traveling on.</param>
public void Chase(Agent target, Map map)
{
Path = AStar.FindPathTo(map[X, Y], map[target.X, target.Y], map);
Move();
}
/// <summary>
/// Draws the map to the console.
/// </summary>
/// <param name="agentA">The location of agent A.</param>
/// <param name="agentB">The location of agent B.</param>
public void Draw(Agent agentA, Agent agentB)
{
Console.Clear();
for (int x = 0; x < Height; x++)
{
Console.Write("+");
for (int y = 0; y < Width; y++)
{
Console.Write("-+");
}
Console.WriteLine();
Console.Write("|");
for (int y = 0; y < Width; y++)
{
var tempNode = new Node(x, y);
if (_map[x, y].Closed) Console.Write("X");
else if (x == agentA.X && y == agentA.Y) Console.Write("A");
else if (x == agentB.X && y == agentB.Y) Console.Write("B");
else if (agentA.Path.Contains(tempNode)) Console.Write("a");
else if (agentB.Path.Contains(tempNode)) Console.Write("b");
else Console.Write(" ");
Console.Write("|");
}
Console.WriteLine();
}
Console.Write("+");
for (int y = 0; y < Width; y++)
{
Console.Write("-+");
}
Console.WriteLine();
Console.Write("Press <enter> to continue to next step.");
}