How come I can't reassign a property of a game object?

Questions & Answers
1

I currently have a player with a light and audio for walking. I am assigning the variables
like:

	static GameObject player = GameObject.FindGameObjectWithTag("Player");
	AudioSource step = player.audio;
	Light flashlight = player.light;

Then I change the range/mute properties and want to reassign them to the player. I am doing this by:

player.audio = step;
player.light = flashlight;

but I get the error “UnityEngine.GameObject.audio cannot be assigned to (it is read only)” Does the Update() function do this for me? Or am I doing something wrong? Thanks in advance

2

You don’t need to assign those back in the first place, so just leave that step out. Those variables are references, they’re not copies.

3

You’re positively doing something wrong: the properties audio and light are read-only, they only have the references to the corresponding components - you must instead modify the component properties in each case.

If you want to select a different sound for each step, for instance, you should do something like this:

  public AudioClip[] footsteps; // assign the step sounds to this array in the Inspector

  void PlayFoostep(){
    // randomly select one of the step sounds:
    player.audio.clip = footsteps[Random.Range(0, footsteps.Length)];
    // play it:
    player.audio.Play();
  }

For the flashlight, you can change the appropriate properties, like color, intensity etc.

  player.light.intensity = 0.5f + Random.value * 0.2f;

Take a look at AudioSource and Light to know which properties you can modify.