# Combine 2 Scripts from Different Objects
**URL:** https://discussions.unity.com/t/combine-2-scripts-from-different-objects/602505
**Category:** Scripting
**Tags:** Scripting
**Created:** [October 22, 2015, 3:01pm UTC](https://discussions.unity.com/t/combine-2-scripts-from-different-objects/602505 "2015-10-22T15:01:47Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@fomgames](https://discussions.unity.com/u/fomgames)
#### Post date: [October 22, 2015, 3:01pm UTC](https://discussions.unity.com/t/combine-2-scripts-from-different-objects/602505/1 "2015-10-22T15:01:47Z")
**_I wanna combine 2 scripts from different objects. My first script like this;_**
```csharp
//ScriptA
...
public void CastRay()
{
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
RaycastHit2D hit = Physics2D.Raycast(ray.origin, ray.direction, Mathf.Infinity);
if (hit.transform.gameObject.tag == "BadGuy") //this line give me "NullReferenceException: Object reference not set to an instance of an object" but it works. I can't get it.
{
gameController.AddScore(scoreValue);
Destroy(hit.transform.gameObject);
}
else
{
gameController.LessScore(scoreValue);
Destroy(hit.transform.gameObject);
}
}
```
**_And my other script;_**
```csharp
//ScriptB
...
public void ShowOnScreen(GameObject[] thisList)
{
for (int i = 0; i < thisList.Length; i++)
{
Instantiate(thisList[i], Vector3.Lerp(startPoint, endPoint, (float)i / (thisList.Length - 1)), Quaternion.identity);
}
if (thisList == enemylist1)
{
Debug.Log("Enemy");
}
else
{
Debug.Log("No Enemy");
}
}
```
**_Both of them works fine but I wanna use “if statements” like this;_**
```csharp
...
if (thisList == enemylist1 && hit.transform.gameObject.tag == "BadGuy")
{
gameController.AddScore(scoreValue);
Destroy(hit.transform.gameObject);
}
else
{
gameController.LessScore(scoreValue);
Destroy(hit.transform.gameObject);
}
}
```
**_I have list of prefab more than one and they showing on screen randomly. I wanna customize every list. Thanks for helping. Yes I am newbie for C# and Unity ^^ By the way,sorry for my bad English 🙂_**
---
### Author:  [@fomgames](https://discussions.unity.com/u/fomgames)
#### Post date: [October 23, 2015, 12:47pm UTC](https://discussions.unity.com/t/combine-2-scripts-from-different-objects/602505/2 "2015-10-23T12:47:26Z")
Is it possible? ☹ Nobody? I am really need help with that ☹
---
### Author:  [@Baste](https://discussions.unity.com/u/Baste)
#### Post date: [October 23, 2015, 1:08pm UTC](https://discussions.unity.com/t/combine-2-scripts-from-different-objects/602505/3 "2015-10-23T13:08:51Z")
It’s not very clear what your problem is. Bad english is okay (we’ve all been there), but I can literally not get what you need help with. This:
" **_I have list of prefab more than one and they showing on screen randomly. I wanna customize every list. Thanks for helping"_**
No clue what that’s supposed to mean.
I the meantime, you’re getting a nullreference on your raycast because you’re not checking if you actually hit anyhting:
```csharp
//ScriptA
...
public void CastRay()
{
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
RaycastHit2D hit = Physics2D.Raycast(ray.origin, ray.direction, Mathf.Infinity);
//if you didn't hit anything, hit.transform will be null, so you need to check that:
if(hit.transform != null) {
if (hit.transform.gameObject.tag == "BadGuy") //won't give nullreferences anymore.
{
gameController.AddScore(scoreValue);
Destroy(hit.transform.gameObject);
}
else
{
gameController.LessScore(scoreValue);
Destroy(hit.transform.gameObject);
}
}
}
```
---
### Author:  [@fomgames](https://discussions.unity.com/u/fomgames)
#### Post date: [October 23, 2015, 1:39pm UTC](https://discussions.unity.com/t/combine-2-scripts-from-different-objects/602505/4 "2015-10-23T13:39:39Z")
Ok. I will try like this;
I have apple,car,pencil,tomato prefabs. I wanna show them on the screen like this;
enemylist1: tomato,pencil
enemylist2: car,apple,tomato
enemylist3: pencil,car,tomato,apple
I can do that with “ScriptB”. I show every prefabs on the screen. Tomato,pencil,car,apple. I can shoot them with “ScriptA” . Now when I wanna hit just tomato or pencil I need “if statement” like this;
```csharp
...
if (thisList == enemylist1 && hit.transform.gameObject.tag == "Tomato" ) //or Pencil. or both of them.
{
gameController.AddScore(scoreValue); //if you hit tomato or pencil get 10 point.
Destroy(hit.transform.gameObject);
}
else
{
gameController.LessScore(scoreValue); //if you hit car or apple lose 10 point
Destroy(hit.transform.gameObject);
}
}
```
\*\* @Baste Thanks for the “nullreferences” solution. Thank you very much.\*\*
---
### Author:  [@fomgames](https://discussions.unity.com/u/fomgames)
#### Post date: [October 24, 2015, 9:49am UTC](https://discussions.unity.com/t/combine-2-scripts-from-different-objects/602505/5 "2015-10-24T09:49:30Z")
No solution for “if statement” ? Is it possible ? I wondering. ^^