private GenMeshFace ExtrudeFace(GenMesh genmesh, GenMeshFace face, float distance, List <GenMeshFace> extrudedFaces = null)
{
var newFaces = genmesh.ExtrudeDiscreetFace(face);
if (extrudedFaces != null)
{
extrudedFaces.AddRange(newFaces);
}
var newFace = newFaces[0];
genmesh.Translate(newFace.Normal * distance, newFace.Vertices);
return(newFace);
}
private void Generate(GenMesh genmesh)
{
var scaleFactor = Random.Range(0.75f, 2.0f);
var scaleVector = Vector3.one * scaleFactor;
genmesh.Scale(scaleVector, genmesh.Vertices);
var faces = genmesh.Faces.ToArray();
for (var f = 0; f < faces.Length; f++)
{
var face = faces[f];
if (Mathf.Abs(face.Normal.x) > 0.5f)
{
var hullSegmentLength = Random.Range(0.3f, 1.0f);
var numberOfHullSegments = Random.Range(numHullSegmentsMin, numHullSegmentsMax);
for (var i = 0; i < numberOfHullSegments; i++)
{
var isLastHullSegment = i == numberOfHullSegments - 1;
var val = Random.value;
if (val > 0.1f)
{
// Most of the time, extrude out the face with some random deviations
face = this.ExtrudeFace(genmesh, face, hullSegmentLength);
if (Random.value > 0.75f)
{
face = this.ExtrudeFace(genmesh, face, hullSegmentLength * 0.25f);
}
// Maybe apply some scaling
if (Random.value > 0.5f)
{
var sy = Random.Range(1.2f, 1.5f);
var sz = Random.Range(1.2f, 1.5f);
if (isLastHullSegment || Random.value > 0.5f)
{
sy = 1f / sy;
sz = 1f / sz;
}
this.ScaleFace(genmesh, face, 1f, sy, sz);
}
// Maybe apply some sideways translation
if (Random.value > 0.5f)
{
var sidewaysTranslation = new Vector3(0f, 0f, Random.Range(0.1f, 0.4f) * scaleVector.z * hullSegmentLength);
if (Random.value > 0.5f)
{
sidewaysTranslation = -sidewaysTranslation;
}
genmesh.Translate(sidewaysTranslation, face.Vertices);
}
// Maybe add some rotation around Z axis
if (Random.value > 0.5f)
{
var angle = 5f;
if (Random.value > 0.5f)
{
angle = -angle;
}
var quaterion = Quaternion.AngleAxis(angle, new Vector3(0, 0, 1));
genmesh.Rotate(face.Vertices, new Vector3(0, 0, 0), quaterion);
}
}
else
{
// Rarely, create a ribbed section of the hull
var ribScale = Random.Range(0.75f, 0.95f);
face = this.RibbedExtrudeFace(genmesh, face, hullSegmentLength, Random.Range(2, 4), ribScale);
}
}
}
}
//Add some large asymmetrical sections of the hull that stick out
if (createAsymmetrySegments)
{
var potentialFaces = genmesh.Faces.ToArray();
for (var f = 0; f < potentialFaces.Length; f++)
{
var face = potentialFaces[f];
if (face.AspectRatio > 4f)
{
continue;
}
if (Random.value > 0.85f)
{
var hullPieceLength = Random.Range(0.1f, 0.4f);
var totalSegments = Random.Range(numAsymmetrySegmentsMin, numAsymmetrySegmentsMax);
for (var i = 0; i < totalSegments; i++)
{
face = ExtrudeFace(genmesh, face, hullPieceLength);
// Maybe apply some scaling
if (Random.value > 0.25f)
{
var s = 1f / Random.Range(1.1f, 1.5f);
ScaleFace(genmesh, face, s, s, s);
}
}
}
}
}
// Now the basic hull shape is built, let's categorize + add detail to all the faces
if (createFaceDetail)
{
var engineFaces = new List <GenMeshFace>();
var gridFaces = new List <GenMeshFace>();
var antennaFaces = new List <GenMeshFace>();
var weaponFaces = new List <GenMeshFace>();
var sphereFaces = new List <GenMeshFace>();
var discFaces = new List <GenMeshFace>();
var cylinderFaces = new List <GenMeshFace>();
faces = genmesh.Faces.ToArray();
for (var f = 0; f < faces.Length; f++)
{
var face = faces[f];
// Skip any long thin faces as it'll probably look stupid
if (face.AspectRatio > 3)
{
continue;
}
// Spin the wheel! Let's categorize + assign some materials
var val = Random.value;
if (face.Normal.x < -0.9f)
{
if (!engineFaces.Any() || val > 0.75f)
{
engineFaces.Add(face);
}
else if (val > 0.5f)
{
cylinderFaces.Add(face);
}
else if (val > 0.25f)
{
gridFaces.Add(face);
}
else
{
face.MaterialIndex = 1;//Material.hull_lights
}
}
else if (face.Normal.x > 0.9f) // front face
{
if (Vector3.Dot(face.Normal, face.CalculateCenterBounds()) > 0 && val > 0.7f)
{
antennaFaces.Add(face); // front facing antenna
face.MaterialIndex = 1; // Material.hull_lights
}
else if (val > 0.4f)
{
gridFaces.Add(face);
}
else
{
face.MaterialIndex = 1;// Material.hull_lights
}
}
else if (face.Normal.y > 0.9f) // top face
{
if (Vector3.Dot(face.Normal, face.CalculateCenterBounds()) > 0 && val > 0.7f)
{
antennaFaces.Add(face); // top facing antenna
}
else if (val > 0.6f)
{
gridFaces.Add(face);
}
else if (val > 0.3f)
{
cylinderFaces.Add(face);
}
}
else if (face.Normal.y < -0.9f) // bottom face
{
if (val > 0.75f)
{
discFaces.Add(face);
}
else if (val > 0.5f)
{
gridFaces.Add(face);
}
else if (val > 0.25f)
{
weaponFaces.Add(face);
}
}
else if (Mathf.Abs(face.Normal.z) > 0.9f) // side face
{
if (!weaponFaces.Any() || val > 0.75f)
{
weaponFaces.Add(face);
}
else if (val > 0.6f)
{
gridFaces.Add(face);
}
else if (val > 0.4f)
{
sphereFaces.Add(face);
}
else
{
face.MaterialIndex = 1;// Material.hull_lights
}
}
}
// Now we've categorized, let's actually add the detail
foreach (var fac in engineFaces)
{
AddExhaustToFace(genmesh, fac);
}
foreach (var fac in gridFaces)
{
AddGridToFace(genmesh, fac);
}
foreach (var fac in antennaFaces)
{
AddSurfaceAntennaToFace(genmesh, fac);
}
foreach (var fac in weaponFaces)
{
AddWeaponsToFace(genmesh, fac);
}
foreach (var fac in sphereFaces)
{
AddSphereToFace(genmesh, fac);
}
foreach (var fac in discFaces)
{
AddDiscToFace(genmesh, fac);
}
foreach (var fac in cylinderFaces)
{
AddCylindersToFace(genmesh, fac);
}
}
// Apply horizontal symmetry sometimes
if (allowHorizontalSymmetry && Random.value > 0.5f)
{
genmesh.Symmetrize(Axis.Horizontal);
}
// Apply vertical symmetry sometimes - this can cause spaceship "islands", so disabled by default
if (allowHorizontalSymmetry && Random.value > 0.5f)
{
genmesh.Symmetrize(Axis.Vertical);
}
if (applyBevelModifier)
{
// TODO
}
}
