public bool IsValid()
{
if (Layer == null)
{
return(false);
}
if (Done == null)
{
return(false);
}
if (ID == null)
{
return(false);
}
if (!Layer.InLayerBounds(EndX, EndY))
{
return(false);
}
if (!Layer.IsSpotWalkable(StartX, StartY))
{
// Within a solid tile.
return(false);
}
if (!Layer.IsSpotWalkable(EndX, EndY))
{
// Within a solid tile.
return(false);
}
return(true);
}
private static List <Node> GetNear(Node node, TileLayer layer)
{
// Want to add nodes connected to the center node, if they are walkable.
// This code stops the pathfinder from cutting corners, and going through walls that are diagonal from each other.
near.Clear();
// Left
left = false;
if (layer.IsSpotWalkable(node.X - 1, node.Y))
{
near.Add(new Node()
{
X = node.X - 1, Y = node.Y
});
left = true;
}
// Right
right = false;
if (layer.IsSpotWalkable(node.X + 1, node.Y))
{
near.Add(new Node()
{
X = node.X + 1, Y = node.Y
});
right = true;
}
// Above
above = false;
if (layer.IsSpotWalkable(node.X, node.Y + 1))
{
near.Add(new Node()
{
X = node.X, Y = node.Y + 1
});
above = true;
}
// Below
below = false;
if (layer.IsSpotWalkable(node.X, node.Y - 1))
{
near.Add(new Node()
{
X = node.X, Y = node.Y - 1
});
below = true;
}
// Above-Left
if (left && above)
{
if (layer.IsSpotWalkable(node.X - 1, node.Y + 1))
{
near.Add(new Node()
{
X = node.X - 1, Y = node.Y + 1
});
}
}
// Above-Right
if (right && above)
{
if (layer.IsSpotWalkable(node.X + 1, node.Y + 1))
{
near.Add(new Node()
{
X = node.X + 1, Y = node.Y + 1
});
}
}
// Below-Left
if (left && below)
{
if (layer.IsSpotWalkable(node.X - 1, node.Y - 1))
{
near.Add(new Node()
{
X = node.X - 1, Y = node.Y - 1
});
}
}
// Below-Right
if (right && below)
{
if (layer.IsSpotWalkable(node.X + 1, node.Y - 1))
{
near.Add(new Node()
{
X = node.X + 1, Y = node.Y - 1
});
}
}
return(near);
}