The name "Math" does not exist in the current context

Question

I have the code below and I'm trying to get around PerlinNoise (x, z), so I set it to Yscale and tried to round it. the problem is that I get the error "The name" Math "does not exist in the current context" for this line. Any ideas?

using UnityEngine; using System.Collections; public class voxelcreate : MonoBehaviour { private int origin = 0; private Vector3 ChunkSize = new Vector3 (32,6,32); private float Height = 10.0f; private float NoiseSize = 10.0f; private float Yscale=0; private GameObject root; public float PerlinNoise(float x, float y) { float noise = Mathf.PerlinNoise( x / NoiseSize, y / NoiseSize ); return noise * Height; } // Use this for initialization void Start () { for(int x = 0; x < 33; x++){ bool isMultiple = x % ChunkSize.x == 0; if(isMultiple == true){ origin = x; Chunk();} } } // Update is called once per frame void Chunk (){ int ranNumber = Random.Range(8, 80); int ranNumber2 = Random.Range(8, 20); Height = ranNumber2; NoiseSize = ranNumber; for(int x = 0; x < ChunkSize.x; x++) { for(int y = 0; y < ChunkSize.y; y++) { for(int z = 0; z < ChunkSize.z; z++) { GameObject box = GameObject.CreatePrimitive(PrimitiveType.Cube); int Yscale = (int)Math.Round((PerlinNoise( x, z)), 0); box.transform.position = new Vector3( origin+x , y+Yscale, z); }}}}} 

Answer 1

Add

 using System; 

at the top of the file.

Or use System.Math instead of Math .

Answer 2

True, you could add using System . However, Unity has Mathf

Why do you prefer to use the built-in Mathf?

System.Math uses doubling. UnityEngine.Mathf uses floats. Since most Unity uses float, it’s best to use Mathf so you don’t have to constantly convert floats and double it back and forth.

Answer 3

In ASP.NET Core, you first need to get the System.Runtime.Extension package , perhaps through the NuGet package manager in Visual Studio or on the command line.

Details on the package can be found here .

Finally, you need to give:

 using System 

And then you can use the methods of this class:

  using System; namespace Demo.Helpers { public class MathDemo { public int GetAbsoluteValue() { var negativeValue = -123; return Math.Abs(negativeValue); } } }