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Touch and drag object on path with iTween
Hello,
I'm trying to move an object along path by touch, using iTween. I'm not very good at coding. I searched the web for days to find a solution but i couldn't. I found iTween example "Path-constrained Characters" and thought I could modify it for my needs.
I'm posting the code and a video of what I managed to do so far. You can find the video here: https://youtu.be/ijddFumeBH4
This is close to what I want but as you can see in the video, it staggers a lot and most of the time touch looses the object. Also, since I get the distance between touch point and object on path and add it to path position, object moves forward when I touch and drag the opposite direction. I don't want that to happen.
I want the object to move only in one direction on the path and only if I drag it forward. I'm pretty sure this is not the way to do it. However I have no idea how to do it in any other way.
So I would appreciate if anyone can point me in the right direction.
Thanks in advance.
using UnityEngine;
using System.Collections;
public class Controller : MonoBehaviour {
public Transform[] controlPath;
float pathPosition = 0;
Vector3 coordinateOnPath;
Vector2 inputPosition;
GameObject draggedObject;
void OnDrawGizmos(){
iTween.DrawPath(controlPath,Color.blue);
}
void Update() {
coordinateOnPath = iTween.PointOnPath (controlPath, pathPosition % 1);
if (Input.touchCount > 0)
{
inputPosition = Camera.main.ScreenToWorldPoint (Input.GetTouch (0).position);
RaycastHit2D hit = Physics2D.Raycast(inputPosition, inputPosition, 1f, LayerMask.GetMask("Circle"));
if (hit.transform != null) {
draggedObject = hit.transform.gameObject;
float dist = Vector2.Distance (inputPosition, draggedObject.transform.position);
pathPosition += dist * .02f;
draggedObject.transform.position = new Vector3 (coordinateOnPath.x, coordinateOnPath.y, coordinateOnPath.z);
}
}
}
}
I am exactly looking for this for past few days. Did you get it working. @Dekman
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