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C#-Quelltext

using UnityEngine;
using System.Collections;

public class Player : MonoBehaviour
{

    //Floats
    public float maxSpeed = 3;
    public float speed = 50f;
    public float jumpPower = 150f;
   


    //Booleans
    public bool grounded;
    public bool canDoubleJump;
    public bool knockFromRight;


    //Audio
    public AudioClip[] audioClip;

    //Stats
    public int curHealth;
    public int maxHealth = 5;

    //Referenzen
    private Rigidbody2D rb2d;
    private Animator anim;
    private GameMaster gm;


    void Start()
    {
        rb2d = gameObject.GetComponent<Rigidbody2D>();
        anim = gameObject.GetComponent<Animator>();
        gm = GameObject.FindGameObjectWithTag("GameMaster").GetComponent<GameMaster>();

        curHealth = maxHealth;
    }

    void Update()
    {

        anim.SetBool("Grounded", grounded);
        anim.SetFloat("Speed", Mathf.Abs(rb2d.velocity.x));


        if (Input.GetAxis("Horizontal") < -0.1f)
        {
            transform.localScale = new Vector3(-3.420575f, 3.420575f, 3.420575f);
        }

        if (Input.GetAxis("Horizontal") > 0.1f)
        {
            transform.localScale = new Vector3(3.420575f, 3.420575f, 3.420575f);
        }

        //Jump
        if (Input.GetButtonDown("Jump"))
        {
            if (grounded)
            {
                rb2d.AddForce(Vector2.up * jumpPower);
                canDoubleJump = true;
            }
            else
            {
                if (canDoubleJump)
                {
                    canDoubleJump = false;
                    rb2d.velocity = new Vector2(rb2d.velocity.x, 0);
                    rb2d.AddForce(Vector2.up * jumpPower / 1.75f);
                }
            }
        }
        //Jump End

      


        if (curHealth > maxHealth)
        {
            curHealth = maxHealth;
        }

        if (curHealth <= 0)
        {
            Die();
        }

    }
    //Update END

    void FixedUpdate()
    {

        Vector3 easeVelocity = rb2d.velocity;
        easeVelocity.y = rb2d.velocity.y;
        easeVelocity.z = 0.0f;
        easeVelocity.x *= 0.75f;



        float h = Input.GetAxis("Horizontal");

        //Fake Friction

        if (grounded)
        {
            rb2d.velocity = easeVelocity;
        }



        //Den Spieler bewegen
        rb2d.AddForce((Vector2.right * speed) * h);


        //Limit wie schnell der Spieler rennt
        if (rb2d.velocity.x > maxSpeed)
        {
            rb2d.velocity = new Vector2(maxSpeed, rb2d.velocity.y);
        }

        if (rb2d.velocity.x < -maxSpeed)
        {
            rb2d.velocity = new Vector2(-maxSpeed, rb2d.velocity.y);
        }


        }

    //FixedUpdate END


    void OnTriggerEnter2D (Collider2D col)
    {
        if(col.CompareTag("Coin"))
        {
            Destroy(col.gameObject);
            gm.points += 50;

            PlaySound(0);
        }

    }

   



    void PlaySound(int clip)
     {
        AudioSource audio = GetComponent<AudioSource>();
        audio.clip = audioClip[clip];
        audio.Play();
     }

    void Die()
    {
        //Restart
        Application.LoadLevel(2);
    }

    public void Damage(int dmg)
    {
        curHealth -= dmg;

        gameObject.GetComponent<Animation>().Play("Player_RedFlash");

        PlaySound(1);
    }



    //Knockback
    public IEnumerator Knockback(float knockDur, float knockbackPwr, Vector3 knockbackDir) 
    {
        float timer = 0;

        while(knockDur > timer)
        {
            timer += Time.deltaTime;

            rb2d.AddForce(new Vector3(knockbackDir.x * -100, knockbackDir.y * knockbackPwr, transform.position.z));
        }

        yield return 0;

    }

}

C#-Quelltext

using UnityEngine;
using System.Collections;

public class Blobby : MonoBehaviour {

    Player player;

    void Start()
    {
        player = GameObject.FindGameObjectWithTag("Player").GetComponent<Player>();
    }

    void OnTriggerEnter2D(Collider2D col)
    {
        if(col.CompareTag("Player"))
        {
            player.Damage(1);
            StartCoroutine(player.Knockback(0.02f, -250, player.transform.position));
        }

    }

}