Changing sprite renderer color not working?

2D
1

In my game, the player has the option to throw their ‘sword’ towards others. When they do this it creates a thrown sword prefab and assigns it the ID number of the player who threw it, which it uses to reference a global array containing the color tints for all the players. But for some reason, it isn’t working for me. It spits out the error,
NullReferenceException: Object reference not set to an instance of an object
ThrownSwordController.SetPlayer (Int32 p) (at Assets/Scripts/ThrownSwordController.cs:40)
PlayerController.Update () (at Assets/Scripts/PlayerController.cs:64)

Here’s my code in the thrown sword object

//Set the associated player for this sword
public void SetPlayer(int p) {
    associatedPlayer = p;
    rend.color = Pallete.playerColors [p];
}

(Where Pallete is a class with some static variables)

And the player object

ThrownSwordController swordCon = swordGO.GetComponent<ThrownSwordController> ();
    if (swordCon) {
    swordCon.SetPlayer (playerNum);
    swordCon.SetMotion (swordPivot.right * throwForce);
}

Any help would be appreciated! Thanks

2

Either rend or Pallete.playerColors has not been assigned a value.

3

That makes sense, except in the sword code I also have a bit to make it fade to grey after a few seconds in an IENumerator

//Adjust color
for (float i = 0; i < duration; i += Time.deltaTime) {
    rend.color = Vector4.Lerp(Pallete.playerColors[associatedPlayer],Pallete.deadColor,i/duration);
    yield return null;
}

This bit works fine if I don’t assign the color earlier on

4

Are you certain that rend is assigned before trying to assign the color though?

This is all going off an assumption that this is the line causing your errors:

rend.color = Pallete.playerColors [p];
5

It probably is, since the color is being assigned almost immediately after instantiation. I’ll try moving the renderer initialization code to the Awake method instead of Start

EDIT: Yep, that fixed it. Thanks!