public void GenerateMap(MapGrid mapGrid)
{
var nodeGoList = new List <MapNodeGameObject>();
// First we calculate the bounds of our map
float xMax = 0, xMin = 0, yMax = 0, yMin = 0;
foreach (var point in mapCollider.points)
{
xMax = (xMax < point.x) ? point.x : xMax;
xMin = (xMin > point.x) ? point.x : xMin;
yMax = (yMax < point.y) ? point.y : yMax;
yMin = (yMin > point.y) ? point.y : yMin;
}
// Calculate the needed iterations
var iterationsX = Mathf.FloorToInt((Mathf.Abs(xMax) + Mathf.Abs(xMin)) / rootNodeDistance);
var iterationsY = Mathf.FloorToInt((Mathf.Abs(yMax) + Mathf.Abs(yMin)) / rootNodeDistance);
mapGrid.SetNodeDimensions(iterationsX, iterationsY);
// Then we iterate through the bounds and create our root nodes
for (int yCount = 0; yCount < iterationsY; yCount++)
{
for (int xCount = 0; xCount < iterationsX - 1; xCount++)
{
// Calculate position, justified by mapCollider pos
var position = new Vector3(xMin + (rootNodeDistance * xCount), yMin + (rootNodeDistance * yCount)) + mapCollider.transform.position;
// Check placement
if (!mapCollider.OverlapPoint(position))
{
continue;
}
bool collides = false;
foreach (var o in obstacleColliders)
{
if (o.OverlapPoint(position))
{
collides = true;
break;
}
}
if (collides)
{
continue;
}
// Add a random vector
var randAdjustedPosition = position + (new Vector3(Random.Range(0, 1f), Random.Range(0, 1f)) * rootNodeDistance / 2f);
// Check placement again, just to be sure
// Otherwise revert to original pos
var spawnPos = mapCollider.OverlapPoint(position)
? randAdjustedPosition
: position;
// Create the data model
var nodeModel = new MapNode()
{
Position = new Vector2(xCount, yCount),
WorldPosition = spawnPos
};
// Spawn the node
var rootNodeGo = Instantiate(mapPrefabs.rootNodePrefab, spawnPos, Quaternion.identity, mapRootNodesTransform);
rootNodeGo.GetComponent <MapNodeGameObject>().Data = nodeModel;
nodeGoList.Add(rootNodeGo.GetComponent <MapNodeGameObject>());
// Add the node to the grid model
mapGrid.AddNode(nodeModel);
}
}
// Set neighbours for the node
foreach (var node in mapGrid.ListNodes)
{
node.Neighbours = mapGrid.GetNeighbours(node);
node.DeeperNeighbours = mapGrid.GetDeeperNeighbours(node);
}
mapCollider.enabled = false;
}