private HashSet <HeightMapNode> GetNonDiagonalNeighbours(HeightMapNode node)
{
return(new HashSet <HeightMapNode> (new[]
{
GetNode(node.GetX() + 1, node.GetY()),
GetNode(node.GetX() - 1, node.GetY()),
GetNode(node.GetX(), node.GetY() + 1),
GetNode(node.GetX(), node.GetY() - 1),
}.Where(pos => InBounds(pos.GetX(), pos.GetY()))
));
}
private Vector3 HeightmapNodeToWorldSpace(HeightMapNode node)
{
var terrainData = _terrain.terrainData;
var terrainSize = terrainData.size;
var heightmapResolution = terrainData.heightmapResolution;
return(new Vector3(
node.GetX() * terrainSize.x / heightmapResolution,
node.height * terrainSize.y,
node.GetY() * terrainSize.z / heightmapResolution
));
}
private List <Vector3> JoinShore(HeightMapNode lastSeen, HeightMapNode current, HeightMapNode target, HashSet <HeightMapNode> shorelineCandidates, HashSet <HeightMapNode> visited)
{
var allNeighbours = new HashSet <HeightMapNode>(GetNeighbours(current).Intersect(shorelineCandidates));
var unvisitedNeighbours = new HashSet <HeightMapNode>(allNeighbours.Except(visited));
if (allNeighbours.Contains(target) && visited.Count > 2)
{
return(new List <Vector3>());
}
visited.Add(current);
List <HeightMapNode> sortedNeighbours = SortNeighbours(unvisitedNeighbours, lastSeen, current);
foreach (var neighbour in sortedNeighbours)
{
var shore = JoinShore(current, neighbour, target, shorelineCandidates, visited);
if (shore != null)
{
shore.Add(HeightmapNodeToWorldSpace(neighbour));
return(shore);
}
}
return(null);
}
static DisplayableElement ToDisplayableElement(IPosition source, Color?forceColor)
{
Color?color = null;
Image image = null;
if (forceColor != null)
{
color = forceColor;
}
else if (source is Room)
{
color = Color.Red;
}
else if (source is Person)
{
color = Color.Blue;
}
else if (source is HeightMapNode)
{
HeightMapNode source_ = source as HeightMapNode;
color = Color.Red;
if (source_.ContactCount < HeightMapNode.MaxCountatCount * 0.25)
{
color = Color.Green;
}
else if (source_.ContactCount < HeightMapNode.MaxCountatCount * 0.50)
{
color = Color.Yellow;
}
else if (source_.ContactCount < HeightMapNode.MaxCountatCount * 0.75)
{
color = Color.Orange;
}
}
else
{
switch (((Node)source).walkingDirection)
{
case WalkingDirection.ALL:
color = Color.White;
break;
case WalkingDirection.NONE:
color = Color.Black;
break;
case WalkingDirection.LEFT:
image = Image.FromFile("../../../Assets/left_16.png");
break;
case WalkingDirection.RIGHT:
image = Image.FromFile("../../../Assets/right_16.png");
break;
case WalkingDirection.UP:
image = Image.FromFile("../../../Assets/up_16.png");
break;
case WalkingDirection.DOWN:
image = Image.FromFile("../../../Assets/down_16.png");
break;
}
}
if (image != null)
{
return(new DisplayableElement(source.Position, image));
}
else
{
return(new DisplayableElement(source.Position, (Color)color));
}
}
private List <HeightMapNode> SortNeighbours(HashSet <HeightMapNode> neighbours, HeightMapNode last, HeightMapNode current)
{
return(neighbours
.OrderBy(n => Mathf.Abs(Vector2Int.Distance(current.coords, n.coords)))
.ToList());
}
private bool IsWaterCloseToLand(HeightMapNode node, HashSet <HeightMapNode> neighbours)
{
return(IsBelowSeaLevel(node) && neighbours.Any(IsAboveSeaLevel));
}
private bool IsAboveSeaLevel(HeightMapNode node)
{
return(node.height > _heightmapSeaLevel);
}
private bool IsBelowSeaLevel(HeightMapNode node)
{
return(!IsAboveSeaLevel(node));
}
private bool IsNeighbour(HeightMapNode a, HeightMapNode b)
{
return(Mathf.Abs(a.GetX() - b.GetX()) <= 1 && Mathf.Abs(a.GetY() - b.GetY()) <= 1); //X and Y are always positive
}
