Dont kniw where the problem

Unity Engine
1

Hello
I wrote this code:

public class Gun : MonoBehaviour 
{
	public Ray ray;
	public RaycastHit hit;
	public GameObject enemy;
	
	void Update () 
	{
		Debug.DrawRay(transform.position,transform.forward*400,Color.red);
		ray = Camera.main.ScreenPointToRay(new Vector3(Screen.width*0.5f,Screen.height*0.5f,0));
		
		if(Input.GetMouseButtonDown(0))
		{
			if(Physics.Raycast(ray,transform.forward*10f,100.0f))
			{
				EnemyHealth eh =(EnemyHealth)enemy.GetComponent("EnemyHealth");
				eh.ApplyD();
			}
		}
	}
}

and the unity wrote me:
Assets/Scripts/Gun.cs(17,36): error CS1502: The best overloaded method match for `UnityEngine.Physics.Raycast(UnityEngine.Ray, float, int)’ has some invalid arguments

Assets/Scripts/Gun.cs(17,36): error CS1503: Argument #2' cannot convert UnityEngine.Vector3’ expression to type `float’

Assets/Scripts/Gun.cs(20,36): error CS1501: No overload for method ApplyD' takes 0’ arguments

and I try to find the problem but dont find any
can someone pls help me?
thx

2

as the error says, there isn’t a version of the raycast function that takes the parameters you are trying to give it… what is that raycast supposed to be doing?

the last one… I assume “ApplyD” is a version of the ApplyDamage function used in the send message examples? in which case it probably takes a parameter of how much damage to apply. Again, you’re not giving the function the parameters it is expecting.

3

Since you already have a ray as a first parameter you don’t need a direction as a second parameter. Just remove it and keep 2 params - ray and distance.

4

the last line I took from another script I have
in the other script it working but here I dont know why it isnt working