unity click and drag object 2d code example
Example 1: how to get 2D object drag with mouse unity
private Vector3 screenPoint;
private Vector3 offset;
void OnMouseDown() {
offset = gameObject.transform.position - Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPoint.z));
}
void OnMouseDrag()
{
Vector3 curScreenPoint = new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPoint.z);
Vector3 curPosition = Camera.main.ScreenToWorldPoint(curScreenPoint) + offset;
transform.position = curPosition;
}
}
Example 2: 2d item dragging unity
public class followMouse : MonoBehaviour
{
bool canDrag = false;
Vector3 itemPos;
void Update()
{
transform.position = Input.mousePosition;
if (!Input.GetMouseButton(0))
{
canDrag = false;
}
}
void OnTriggerStay2D(Collider2D other)
{
if (other.CompareTag("itemIcon"))
{
if (Input.GetMouseButton(0))
{
canDrag = true;
other.transform.position = Input.mousePosition;
}
}
}
}
Example 3: drag object unity 2d
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class DragAndDrop : MonoBehaviour
{
private bool isDragging;
public void OnMouseDown()
{
isDragging = true;
}
public void OnMouseUp()
{
isDragging = false;
}
void Update()
{
if (isDragging) {
Vector2 mousePosition = Camera.main.ScreenToWorldPoint(Input.mousePosition) - transform.position;
transform.Translate(mousePosition);
}
}
}