Platformer Fixes

In player_character_controller.cs:

Near top added SerializeField above mask variable:

[SerializeField]
private LayerMask mask;


In FixedUpdate for Collision/Check Ground:
Added mask to end of Physics2D.Linecast:
RaycastHit2D cast = Physics2D.Linecast(new Vector2(transform.position.x, boxCollider.bounds.min.y), new Vector2(transform.position.x, boxCollider.bounds.min.y + deltaV), mask);


Added this function:
public bool IsGrounded()
    {
        RaycastHit2D cast = Physics2D.Linecast(new Vector2(transform.position.x, boxCollider.bounds.min.y), new Vector2(transform.position.x, boxCollider.bounds.min.y + gravity), mask);
        if (cast.collider != null)
        {
            return true;
        }

        return false;
    }

==============================================

In bullet_move.cs:
Changed OnTriggerEnter2D function to OnCollisionEnter2D:
private void OnCollisionEnter2D(Collision2D collision)
    {
        if (collision.collider.tag != "Player")
        {
            Destroy(gameObject);
        }
    }

==============================================

In movingplatform.cs:
Added these functions:

private void OnCollisionEnter2D(Collision2D collision)
    {
        if (collision.gameObject.tag == "Player")
        {
            player_character_controller pc = collision.gameObject.GetComponent<player_character_controller>();
            if (pc.IsGrounded())
            {
                collision.gameObject.transform.SetParent(transform);
            }
        }
    }

    private void OnCollisionExit2D(Collision2D collision)
    {
        if (collision.gameObject.tag == "Player")
        {
            collision.gameObject.transform.SetParent(null);
        }
    }

==============================================

In Scene:
Changed grounds, bench, sign, boat objects to use "grounds" Layer
on Player gameObject for Player_character_controller component set Mask to "grounds"
Horizontal Velocity and Vertical Velocity needed to be increased (I set it to 5 and 10 respectively)