gamedev class snippets 001

CameraController.cs

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

public class CameraController : MonoBehaviour
{
    public float interpSpeed = 0.5f;
    public GameObject focus;
    private Vector3 targetPosition;
    // Start is called before the first frame update
    void Start()
    {
        focus = GameObject.Find("Mario");
    }

    // Update is called once per frame
    void Update()
    {
        
    }

    void LateUpdate()
    {
        targetPosition = new Vector3(focus.transform.position.x, transform.position.y, transform.position.z);
        transform.position = Vector3.Lerp(transform.position, targetPosition, interpSpeed);
    }
}

MarioController.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class MarioController : MonoBehaviour
{
    public float speed = 5.0f;
    public float jumpPower = 9.0f;
    private Animator animator;
    private Rigidbody2D rb;
    private Vector3 faceRight = new Vector3(0, 90, 0);
    private Vector3 faceLeft = new Vector3(0, -90, 0);

    // Start is called before the first frame update
    void Start()
    {
        
        animator = GetComponent<Animator>();
        rb = GetComponent<Rigidbody2D>();
        ScoreManager.Current().Clear();
    }

    // Update is called once per frame
    void Update()
    {
        float move = Input.GetAxis("Horizontal");
        animator.SetBool("isJumping", Input.GetKeyDown(KeyCode.Space)); 
        if (Mathf.Abs(move) > 0)
        {
            ScoreManager.Current().Add(10);
            ScoreManager.UpdateUI();
            animator.SetBool("isWalking", true);
        }
        else
        {
            animator.SetBool("isWalking", false);
        }
    }

    void FixedUpdate()
    {
        float move = Input.GetAxis("Horizontal");
        if (move != 0)
        {
            // todo: use SpriteRenderer.Flip() here?
            Vector3 scale = transform.localScale;
            if (move > 0)
            {
                scale.x = Mathf.Abs(scale.x);
                transform.position += Vector3.right * speed * Time.deltaTime;
            }
            else if (move < 0)
            {
                scale.x = Mathf.Abs(scale.x) * -1;       
                transform.position += Vector3.left * speed * Time.deltaTime;
            }
            transform.localScale = scale;
        }

        if (Input.GetKeyDown(KeyCode.Space))
        {
            rb.AddForce(Vector3.up * jumpPower, ForceMode2D.Impulse);
        }

    }
    //{
    //    float move = Input.GetAxis("Horizontal");
    //    //rb.velocity = new Vector2(move * speed, rb.velocity.y);
    //    if (move > 0)
    //    {
    //        if (rb.transform.eulerAngles != faceLeft)
    //            rb.transform.eulerAngles = faceLeft;
    //        transform.position += Vector3.right * speed * Time.deltaTime;
    //    }
    //    else if (move < 0)
    //    {
    //        if (rb.transform.eulerAngles != faceRight)
    //            rb.transform.eulerAngles = faceRight;
    //        transform.position += Vector3.left * speed * Time.deltaTime;
    //    }
    //    if (Input.GetKeyDown(KeyCode.Space))
    //    {
    //        rb.AddForce(Vector3.up * 10, ForceMode2D.Impulse);
    //    }
    //}

}

// Reference: http://coffeebreakcodes.com/sample-projects-unity/2d-mario-game-unity3d/