HeroScript

// Hero Script - Adventure
// name
using UnityEngine;

public class HeroScript : MonoBehaviour
{
    // Set my Speed. If There is no speed, you can't move.
    [SerializeField] private float memberSpeed = 3.0f;

    // I still don't know. I'm assuming it calls the Sprite Renderer, but I don't know what null is.
    private SpriteRenderer memberSpriteRenderer = null;

    // I STILL don't know. Rigid Body.
    private Rigidbody2D memberRigidBody = null; // I don't know, I'll tell you later.

    // Green Key
    private bool memberHasGreenKey = false;

    // Orange Key
    private bool memberHasOrangeKey = false;

    // Master Key
    private bool memberHasMasterKey = false;

    // Score
    private int memberScore = 0;

    // Lance
    private bool memberHasLance = false;

    // Sword
    private bool memberHasSword = false;



    // Start is called before the first frame update
    void Start()
    {
        // Get the rigid body that we added in Unity.
        memberRigidBody = this.GetComponent<Rigidbody2D>();

         // Get the sprite renderer from Unity.
        memberSpriteRenderer = this.GetComponent<SpriteRenderer>();

    }

    // Update is called once per frame
    void Update()
    {
        // Which direction does the player want to go?
        // Assume the player doesn't want to move, so no direction.

        Vector3 localWhichDirection;
        localWhichDirection = Vector3.one;

        // Get movement input
        float horizontalInput = Input.GetAxis("Horizontal");
        float verticalInput = Input.GetAxis("Vertical");

        // Calculate movement direction
        Vector3 movementDirection = new Vector3(horizontalInput, verticalInput);

        // Apply movement
        memberRigidBody.velocity = movementDirection * memberSpeed;


    }

    // Hero just collided with something.
    void OnCollisionEnter2D(Collision2D localCollision)
    {
        // Debug
        Debug.Log(localCollision);

        // What is the other object?
        GameObject localOtherObject = localCollision.gameObject;
        {

            // Is it a Green Key?
            if (localOtherObject.name.StartsWith("Green Key"))
            {
                // Gain Green Key.
                memberHasGreenKey = true;
                Destroy(localOtherObject);
            }

            // Is it a Green Door?

            if (localOtherObject.name.StartsWith("Hero"))
            {
                this.gameObject.SetActive(true);
            }
            else if (memberHasGreenKey)
            {
                this.gameObject.SetActive(false);
            }


            // Is it a Coin?
            if (localOtherObject.name.StartsWith("Coin"))
            {
                // Increase the score.
                memberScore ++;
                print(memberScore);
                Destroy(localOtherObject);
            }

            // Is it an Orange Key?
            if (localOtherObject.name.StartsWith("Orange Key"))
            {
                // Gain Orange Key
                memberHasOrangeKey = true;
            this.gameObject.SetActive(false);
            }

            // Is it an Orange Door?

            if (localOtherObject.name.StartsWith("Hero"))
            {
                memberHasOrangeKey = true;
                this.gameObject.SetActive(false);
            }

            // Is it a Sword?
            if (localOtherObject.name.StartsWith("Sword"))
            {
                memberHasSword = true;
                Destroy(localOtherObject);
            }

            // Is it a Bat?

            if (localOtherObject.name.StartsWith("Bat"))
            {
                if (!memberHasSword)
                {
                    // The Bat kills the Hero.
                    this.gameObject.SetActive(false);
                }
                else if (memberHasSword)
                {
                    // The Hero kills the Bat.
                    localOtherObject.SetActive(false);

                }
            }

            // Is it a Dragon?

            if (localOtherObject.name.StartsWith("Dragon"))
            {
                if (memberHasLance)

                // The Hero slays the Dragon.
                localOtherObject.SetActive(false);
            }
            else
            {
                // The Dragon slays the Hero.
                this.gameObject.SetActive(true);
            }

        }
    }
}