public void Generate()
{
planeMesh = new PlaneMesh();
planeMesh.Size = new Vector2(chunkSize, chunkSize);
planeMesh.SubdivideDepth = Mathf.RoundToInt(chunkSize * 0.5f);
planeMesh.SubdivideWidth = Mathf.RoundToInt(chunkSize * 0.5f);
surfaceTool = new SurfaceTool();
meshDataTool = new MeshDataTool();
surfaceTool.CreateFrom(planeMesh, 0);
arrayPlane = surfaceTool.Commit();
meshDataTool.CreateFromSurface(arrayPlane, 0);
for (int i = 0; i < meshDataTool.GetVertexCount(); i++)
{
Vector3 vertex = meshDataTool.GetVertex(i);
vertex.y = noise.GetNoise3d(
vertex.x + position.x,
vertex.y,
vertex.z + position.z) * References.steepness;
meshDataTool.SetVertex(i, vertex);
avgHeight += vertex.y;
}
avgHeight /= meshDataTool.GetVertexCount();
for (int i = 0; i < arrayPlane.GetSurfaceCount(); i++)
{
arrayPlane.SurfaceRemove(i);
}
for (int i = 0; i < meshDataTool.GetFaceCount(); i++)
{
Vector3 A = meshDataTool.GetVertex(meshDataTool.GetFaceVertex(i, 0));
Vector3 B = meshDataTool.GetVertex(meshDataTool.GetFaceVertex(i, 1));
Vector3 C = meshDataTool.GetVertex(meshDataTool.GetFaceVertex(i, 2));
Vector3 face = (A + B + C) / 3 + position;
Vector3 normal = meshDataTool.GetFaceNormal(i);
slope += Maths.Angle(Vector3.Up, normal);
}
slope /= meshDataTool.GetFaceCount();
meshDataTool.CommitToSurface(arrayPlane);
surfaceTool.Begin(Mesh.PrimitiveType.Triangles);
surfaceTool.CreateFrom(arrayPlane, 0);
surfaceTool.GenerateNormals();
meshInstance = new MeshInstance();
meshInstance.Mesh = surfaceTool.Commit();
meshInstance.SetSurfaceMaterial(0, (Material)ResourceLoader.Load("res://Assets/Shader/Terrain.material"));
meshInstance.CreateTrimeshCollision();
meshInstance.CastShadow = GeometryInstance.ShadowCastingSetting.On;
AddChild(meshInstance);
}
