Platform movement stop not normal

Hi,

I'm total new on unity, sorry if I don't ask this question correctly or if it's a double post....

I have an strange problem with my character and his movement.

When my character with a box collider 2D and rigidbody 2D move, sometime, he stop... Without reason ! The ground is a simple sprite of 60px with a box collider 2D.

Here my script for control my character (if you have a suggestion for this script, say me )

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class playerControlScript : MonoBehaviour {
5.  
6.     public float speedMax  = 10;
7.     public float speedUp   = 5;
8.     public float speedDown = 8;
9.  
10.     private Vector2 movement;
11.     private float   currentSpeed;
12.     private bool    isRight;
13.  
14.     void Update () {
15.         float inputX    = Input.GetAxis("Horizontal");
16.  
17.         Debug.Log (inputX);
18.  
19.         movement = new Vector2(
20.             inputX * getSpeed(inputX),
21.             0);
22.  
23.         if (inputX > 0 && isRight == true) {
24.             Flip();
25.             isRight = false;
26.         }
27.  
28.         if (inputX < 0 && isRight == false) {
29.             Flip();
30.             isRight = true;
31.         }
32.     }
33.  
34.     float getSpeed(float input){
35.         if(input != 0)
36.             currentSpeed += speedUp;
37.         if (input == 0)
38.             currentSpeed -= speedDown;
39.  
40.         if (currentSpeed > speedMax)
41.             currentSpeed = speedMax;
42.         if (currentSpeed < 0)
43.             currentSpeed = 0;
44.  
45.         return currentSpeed;
46.     }
47.  
48.     void FixedUpdate()
49.     {
50.         rigidbody2D.velocity = movement;
51.     }
52.  
53.     void Flip(){
54.         Vector3 theScale = transform.localScale;
55.         theScale.x *= -1;
56.         transform.localScale = theScale;
57.     }

But I don't understand why the character stop without reason sometime. It's not always at the same position, that total random and the move work ( tested with Debug.log() ).



Thank you for your help and sorry for my bad English .

Flechenoir.

 

I have found the problem, I explain for the future user with that problem, that a logical problem, with two screen-shoot you will understand !

OLD:

NEW: