How to make a cube slide and can't change direction?

Question

I'm trying to do a movement based on Pokemon Ice Movement / Slider android game.

THIS VIDEO SHOWS THE MOVEMENT: https://www.youtube.com/watch?v=UuvF80xb5Vc

The move consists on when you slide to one axis, the player needs to wait to collide with the wall to have permition to do the next move.

I'm a software engineer student so I'm familiar with programming, but I'm new on Unity and game programming so I need a bit of help right now.

I already have this code:

  public class PlayerController1 : MonoBehaviour {
  

  public float MovementSpeed = 20f;
 
  private bool prevStatusVertical;
  private bool prevStatusHorizontal;
  private bool moveHorizontal;
 
  private CharacterController cc;
  
  void Start () {
      cc = GetComponent<CharacterController> ();
  }
  
  void Update () {
      
      float forwardSpeed = Input.GetAxis("Vertical") * MovementSpeed;
      float sideSpeed = Input.GetAxis("Horizontal") * MovementSpeed;
      
      
      //This variables will be used to check whether player is pressing keys assigned to Horizontal and Vertical
      bool statusHorizontal = Input.GetButton("Horizontal");
      bool statusVertical = Input.GetButton("Vertical");
 
      if (statusHorizontal && !prevStatusHorizontal) 
          moveHorizontal = true;
      if (statusVertical && !prevStatusVertical || !statusHorizontal)
          moveHorizontal = false;
      
      //By default character is not moving
      Vector3 speed = new Vector3 (0, 0, 0);
      
      if (statusVertical && !moveHorizontal)
      {
          speed.z += forwardSpeed;
      }
      else if (statusHorizontal)
      {
          speed.x += sideSpeed;
      }
 
      prevStatusVertical = statusVertical;
      prevStatusHorizontal = statusHorizontal;
      
      cc.SimpleMove (speed);
  }

}

Answer 1

Answer by CheetahSpeedLion · Jul 13, 2017 at 01:56 AM

I would recommend using collision detection and a "touchingWall" boolean whenever the object is in contact with the wall. Then you can do an if( touchingWall ) and put your existing input code inside that.

Areleli

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Answer 2

Answer by Cornelis-de-Jager · Jul 13, 2017 at 04:51 AM

If you want it to move in one direction until it collides then you con use something like the following. It will work best if there is NO RigidBody component attached:

 Vector3 dir;
 bool canMove = true;

 void Start () {
    // initialise as zero vector
    dir = Vector3.zero;
 }

 void Update () { 
    transform.Translate (dir);
 }
 
 void MoveInDirection (Vector3 _dir) {
     // Check for can move
     if (!canMove)
          return;
     
    // Change Direction
     dir = _dir;

    // Prevent another move until collision
    canMove = false;
 }

 OnCollisionEnter (Collision other) {
     if (other.gameObject.Tag == "wall")  {
      // Set speed to 0
      dir = Vector3.zero;
      canMove = true;
    }
 }

All you need to do then is call the MoveInDirection function each time you want to move. The rest will be handled automatically. Your walls will require the Tag "wall"

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How to make a cube slide and can't change direction?

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