using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Entity ent1 = new Entity();

        Console.WriteLine("ent1 direction:"+ent1.direction);

        for(int i = 0; i< ent1.entityStance.Length;i++)

            Console.WriteLine("ent1 direction:"+ Enum.GetName(typeof(Direction), i)+" stanceState:"+ent1.entityStance[i]);

    }

}

struct Vector2

{

    int x,y;

    public Vector2(int x, int y)

    {

        this.x = x;

        this.y = y;

    }

    public Vector2(Vector2 v2)

    {

        this.x = v2.x;

        this.y = v2.y;

    }

}

public class Entity

{

    //element at 0 = down direction, 1 = left etc

    //sides of the entity

    public EntityStanceState[] entityStance = new EntityStanceState[4];

    public Direction direction;

    public Entity()

    {

        //init

        entityStance[(int)Direction.Down] = EntityStanceState.Normal;

        entityStance[(int)Direction.Left] = EntityStanceState.Flank;

        entityStance[(int)Direction.Up] = EntityStanceState.Vulnerable;

        entityStance[(int)Direction.Right] = EntityStanceState.Flank;

        direction = Direction.Down; 

    }

    public void ChangeDirection(Direction dir)

    {

        if(direction == dir) 

            return; //same direction

        switch(dir){

            case Direction.Down:{

                UpdateEntityStance(dir);

                break;

            }

            case Direction.Left:{

                break;

            }

            case Direction.Up:{

                break;

            }

            case Direction.Right:{

                break;

            }

        }

    }

    public void UpdateEntityStance(Direction newDirection)

    {

        //default facing down / south

                    entityStance[2] = EntityStanceState.Vulnerable;

    entityStance[1] = EntityStanceState.Flank;  entityStance[3] = EntityStanceState.Flank;

                    entityStance[0] = EntityStanceState.Normal;

        //current stance

        EntityStanceState tempDown;// = entityStance[(int)Direction.Down];

        EntityStanceState tempUp;// = entityStance[(int)Direction.Right];

        EntityStanceState tempLeft;// = entityStance[(int)Direction.Up];

        EntityStanceState tempRight;// = entityStance[(int)Direction.Right];

        //current direction

        //set temp states

        switch(direction)

        {

            case Direction.Down:{

                tempDown = entityStance[(int)Direction.Down];

                tempUp = entityStance[(int)Direction.Up];

                tempLeft = entityStance[(int)Direction.Left];

                tempRight = entityStance[(int)Direction.Right];

                break;

            }

            case Direction.Left:{

                tempDown = entityStance[(int)Direction.Down];

                tempUp = entityStance[(int)Direction.Up];

                tempLeft = entityStance[(int)Direction.Left];

                tempRight = entityStance[(int)Direction.Right];

                break;

            }

            case Direction.Up:

                break;

            case Direction.Right:

                break;

        }

        //rotate array based on the new direction

        switch(newDirection)

        {

            case Direction.Down:{

                EntityStanceState tempDown = entityStance[(int)Direction.Down];

                EntityStanceState tempUp = entityStance[(int)Direction.Right];

                EntityStanceState tempLeft = entityStance[(int)Direction.Up];

                EntityStanceState tempRight = entityStance[(int)Direction.Right];

                entityStance[(int)Direction.Down] = tempUp;

                entityStance[(int)Direction.Up] = tempDown;

                entityStance[(int)Direction.Right] = tempLeft;

                entityStance[(int)Direction.Left] = tempRight;

                break;

            }

            case Direction.Up:{

                EntityStanceState tempDown = entityStance[(int)Direction.Down];

                EntityStanceState tempUp = entityStance[2];

                EntityStanceState tempLeft = entityStance[1];

                EntityStanceState tempRight = entityStance[3];

                entityStance[0] = tempUp;

                entityStance[1] = tempRight;

                entityStance[2] = tempDown;

                entityStance[3] = tempLeft;

                break;

            }

        }

    }

}

public enum Direction

{

    Down,Left,Up,Right

}

public enum EntityStanceState

{

    Normal, Vulnerable, Block, Flank

}