Error unity error CS0200: Property or indexer `UnityStandardAssets.Characters.FirstPerson.RigidbodyFirstPersonController.Running' cannot be assigned to (it is read only)

Questions & Answers
1

public class PlayerController : MonoBehaviour {

public float playerHealth = 100f, maxPlayerHealth = 100f, playerStrength = 100f, maxPlayerStrength = 100f, playerHungry = 100f, maxPlayerHungry = 100f, playerThirst = 100f, maxPlayerThirst = 100f;
public bool cantRunWithoutStrength = true;
public float healthRegeneration = 0.1f, strengthRegeneration = 0.1f, hungryDownspeed = 0.001f, thirstDownspeed = 0.001f, runExpensOfStrength = 0.04f, hungryDamagePerSec = 0.25f, thirstDamagePerSecond = 0.15f;
public Image hpBar, strBar, hungBar, thirBar;
RigidbodyFirstPersonController fpc;
float maxBarLength = 256f;
float lastHPTimer = 0f, lastHUNGTimer = 0f, lastTHIRTimer = 0f, lastTHIRSTDamage = 0f, lastHUNGRYDamage = 0f;

void Start()
{
    fpc = gameObject.GetComponent<RigidbodyFirstPersonController>();
    UpdateBars();
    maxBarLength = hpBar.rectTransform.sizeDelta.x;
}

public void ShowPlayerInfo(bool show)
{
    hpBar.transform.parent.parent.gameObject.SetActive(show);
}

void Update()
{
	if (!fpc.Running)
    {
        playerStrength -= runExpensOfStrength;
        playerStrength = Mathf.Clamp(playerStrength, 0, maxPlayerStrength);
        UpdStrength();
    }

    if (cantRunWithoutStrength)
    {
        if (playerStrength < 10f)
        {
			fpc.Running = false;
        }
        else
        {
			fpc.Running = true;
        }
    }
2

The error is quite specific. The Running property can’t be assigned to because it’s read only. On lines 34 and 38 you’re trying to set fpc.Running to true or false. There might be a method on the object or some other setting that lets the object know when to change the value of Running, but you aren’t able to do it yourself in the way you’re trying to.

I don’t see any documentation for it, so can’t help you much beyond that. Look for other properties or methods on the object that might let you control Running in some way. Might be something like SetRunning or something.