Can Somone explain these errors?

Questions & Answers
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1

Im pretty sure the whole code is wrong so here it is:

public Sprite Running;
public Sprite NoFuel;
public GameObject Player;
public SpriteRenderer SpriteRenderer;
public int Fuel;
public bool HasFuelDefault;

void OnCollisionEnter2D(Collision2D collision)
{
    if(collision.gameObject.name == Player.name && HasFuelDefault == true)
    {
        HasFuelDefault = false;
        SpriteRenderer.Sprite = "FireEx_1";
        yield return new WaitForSeconds(Fuel);
        SpriteRenderer.Sprite = NoFuel;
    }

Here are my errors:
Assets\Scripts\FireExting.cs(19,28): error CS1061: 'SpriteRenderer' does not contain a definition for 'Sprite' and no accessible extension method 'Sprite' accepting a first argument of type 'SpriteRenderer' could be found (are you missing a using directive or an assembly reference?)

Assets\Scripts\FireExting.cs(19,28): error CS1061: 'SpriteRenderer' does not contain a definition for 'Sprite' and no accessible extension method 'Sprite' accepting a first argument of type 'SpriteRenderer' could be found (are you missing a using directive or an assembly reference?)

Assets\Scripts\FireExting.cs(14,10): error CS1624: The body of 'FireExting.OnCollisionEnter2D(Collision2D)' cannot be an iterator block because 'void' is not an iterator interface type

Please explain them and tell me how to fix them.

2

Hi, see below.

Assets\Scripts\FireExting.cs(19,28): error CS1061: 'SpriteRenderer' does not contain a definition for 'Sprite' and no accessible extension method 'Sprite' accepting a first argument of type 'SpriteRenderer' could be found (are you missing a using directive or an assembly reference?)

This could be caused due the wrong import, as the SpriteRenderer definition of “sprite” is lowercased.

 SpriteRenderer.sprite = someSprite.

On that note, to use SpriteRenderer.sprite you need to provide a sprite object, not a string.

public SpriteRenderer spriteRenderer;
public Sprite someSprite;

private void YourMethodName() {
     spriteRenderer.sprite = someSprite;
}

Assets\Scripts\FireExting.cs(14,10): error CS1624: The body of 'FireExting.OnCollisionEnter2D(Collision2D)' cannot be an iterator block because 'void' is not an iterator interface type

You’re trying to use a ‘void’ method as an enumerator method. Void methods have no return.
For you to use WaitForSeconds() you’d need to define an IEnumerator method.

See below on definition and use;

void OnCollisionEnter2D(Collision2D collision)
{
    if(collision.gameObject.name == Player.name && HasFuelDefault == true)
    {
        StartCoroutine(DoSomething(fuel));
    }
}

IEnumerator DoSomething (int fuel) {
	HasFuelDefault = false;
	SpriteRenderer.Sprite = "FireEx_1";
	yield return new WaitForSeconds(fuel);
	SpriteRenderer.Sprite = NoFuel;
}

Full Working Code:

public Sprite Running;
public Sprite NoFuel;
public GameObject Player;
public SpriteRenderer SpriteRenderer;
public int Fuel;
public bool HasFuelDefault;

void OnCollisionEnter2D(Collision2D collision)
{
    if(collision.gameObject.name == Player.name && HasFuelDefault == true)
    {
	        StartCoroutine(DoSomething());
    }
}

IEnumerator DoSomething () {
	HasFuelDefault = false;
	SpriteRenderer.sprite = Running;
	yield return new WaitForSeconds(Fuel);
	SpriteRenderer.sprite = NoFuel;
}

Hope that helps!

3

could you try this code:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class FireExting : MonoBehaviour
{
    public Sprite Running;         // Sprite for when the fire extinguisher is in use
    public Sprite NoFuel;          // Sprite for when the fire extinguisher has no fuel
    public GameObject Player;      // Reference to the player object
    public SpriteRenderer SpriteRenderer;  // Reference to the SpriteRenderer component
    public int Fuel;               // Duration of the fire extinguisher fuel
    public bool HasFuelDefault;    // Flag to track if the fire extinguisher has fuel initially

    void OnCollisionEnter2D(Collision2D collision)
    {
        // Check if the collision is with the player and there is fuel in the fire extinguisher
        if (collision.gameObject.name == Player.name && HasFuelDefault == true)
        {
            HasFuelDefault = false;    // Set the fuel flag to false
            SpriteRenderer.sprite = Running;   // Change the sprite to the running sprite

            StartCoroutine(ExtinguishFire());  // Start the coroutine to extinguish the fire
        }
    }

    // Coroutine to extinguish the fire after a delay
    private IEnumerator ExtinguishFire()
    {
        yield return new WaitForSeconds(Fuel);   // Wait for the specified fuel duration

        SpriteRenderer.sprite = NoFuel;   // Change the sprite to the no fuel sprite
    }
}