public static PointsResult getPoints(GameObject source, int extraPoints = 0)
{
//get transform information
Vector3 origScale = source.transform.localScale;
source.transform.localScale = Vector3.one;
Quaternion origRotation = source.transform.localRotation;
source.transform.localRotation = Quaternion.identity;
//get collider information
PolygonCollider2D sourcePolyCollider = source.GetComponent <PolygonCollider2D> ();
BoxCollider2D sourceBoxCollider = source.GetComponent <BoxCollider2D> ();
Collider2D sourceCollider = null;
List <Point> points = new List <Point> ();
List <Vector2> borderPoints = new List <Vector2> ();
if (sourcePolyCollider != null)
{
borderPoints = getPoints(sourcePolyCollider);
sourceCollider = sourcePolyCollider;
}
else if (sourceBoxCollider != null)
{
borderPoints = getPoints(sourceBoxCollider);
sourceCollider = sourceBoxCollider;
}
Rect rect = getRect(source);
float ratio = Mathf.Sqrt(3) / 2;
float n = Mathf.Sqrt(Mathf.Max(extraPoints / ratio, 100));
int rows = Mathf.RoundToInt(n);
float rowHeight = rect.height / rows;
int columns = Mathf.RoundToInt(n * ratio);
float columnWidth = rect.width / columns;
float x0 = rect.width / -2 + rect.center.x + columnWidth / 2;
float y0 = rect.height / -2 + rect.center.y + rowHeight / 2;
float x, y, xOffset;
float randomVariation = 0.4f;
Vector2 point;
for (int i = 0; i < rows; i++)
{
y = y0 + i * rowHeight;
xOffset = i % 2 == 0 ? -columnWidth / 4 : columnWidth / 4;
for (int j = 0; j < columns; j++)
{
x = x0 + j * columnWidth + xOffset;
point = new Vector2(
Random.Range(randomVariation * columnWidth / -2 + x, randomVariation * columnWidth / 2 + x),
Random.Range(randomVariation * rowHeight / -2 + y, randomVariation * rowHeight / 2 + y)
);
if (sourceCollider != null && sourceCollider.OverlapPoint(point))
{
points.Add(new Point(point, i, j));
}
}
}
//reset transform information
source.transform.localScale = origScale;
source.transform.localRotation = origRotation;
PointsResult result = new PointsResult(points, borderPoints, rows, columns);
result.GenerateMap(rect);
return(result);
}
public static List <GameObject> GenerateCavePieces(GameObject source, PointsResult pointsResult, int subshatterSteps = 0, Material mat = null)
{
List <GameObject> pieces = new List <GameObject> ();
if (mat == null)
{
mat = createFragmentMaterial(source);
}
//get transform information
Vector3 origScale = source.transform.localScale;
source.transform.localScale = Vector3.one;
Quaternion origRotation = source.transform.localRotation;
source.transform.localRotation = Quaternion.identity;
//get rigidbody information
Vector2 origVelocity = source.GetComponent <Rigidbody2D> ().velocity;
Rect rect = getRect(source);
List <Vector2> points = new List <Vector2> ();
foreach (Point point in pointsResult.points)
{
points.Add(point.point);
}
List <Vector2> borderPoints = pointsResult.borderPoints;
Voronoi voronoi = new Delaunay.Voronoi(points, null, rect);
List <List <Vector2> > clippedRegions = new List <List <Vector2> > ();
foreach (Point point in pointsResult.points)
{
bool isWall = pointsResult.isWall(point);
float magnitude = point.point.magnitude;
bool isCell = magnitude > 100;
bool isInStartingArea = Mathf.Abs(Mathf.Abs(point.point.x) - Mathf.Abs(point.point.y)) < 10;
if (!isInStartingArea && (isWall || isCell))
{
List <Vector2> region = voronoi.Region(point.point);
clippedRegions = ClipperHelper.clip(borderPoints, region);
foreach (List <Vector2> clippedRegion in clippedRegions)
{
pieces.Add(generateVoronoiPiece(source, clippedRegion, origVelocity, origScale, origRotation, mat));
}
}
}
List <GameObject> morePieces = new List <GameObject> ();
if (subshatterSteps > 0)
{
subshatterSteps--;
foreach (GameObject piece in pieces)
{
morePieces.AddRange(SpriteExploder.GenerateVoronoiPieces(piece, 3, subshatterSteps));
GameObject.DestroyImmediate(piece);
}
}
else
{
morePieces = pieces;
}
//reset transform information
source.transform.localScale = origScale;
source.transform.localRotation = origRotation;
Resources.UnloadUnusedAssets();
return(morePieces);
}
