Код:
using System.Collections;
using System.Collections.Generic;
using System.Text;
using UnityEngine;
public class Rules : MonoBehaviour
{
DragAndDrop dad;
public Rules()
{
dad = new DragAndDrop();
}
// Use this for initialization
void Start ()
{
}
// Update is called once per frame
void Update ()
{
dad.Action();
}
}
class DragAndDrop
{
enum State
{
none,
drag
}
private State state;
private GameObject item;
public DragAndDrop()
{
state = State.none;
item = null;
}
public bool Action()
{
switch (state)
{
case State.none:
if (IsMouseButtonPressed())
PickUp();
break;
case State.drag:
if (IsMouseButtonPressed())
Drag();
else {
Drop();
return true;
}
break;
}
return false;
}
bool IsMouseButtonPressed()
{
return Input.GetMouseButton(0);
}
void PickUp()
{
Vector2 clickPosition = GetClickPosition();
Transform clickedItem = GetItemAt(clickPosition);
if (clickedItem == null) return;
item = clickedItem.gameObject;
state = State.drag;
Debug.Log("Picked up: "+item.name);
}
Vector2 GetClickPosition()
{
return Camera.main.ScreenToWorldPoint(Input.mousePosition);
}
Transform GetItemAt(Vector2 position)
{
RaycastHit2D[] figures = Physics2D.RaycastAll(position, position, 0.5f);
if (figures.Length == 0)
return null;
return figures[0].transform;
}
void Drag()
{
item.transform.position = GetClickPosition();
}
void Drop()
{
state = State.none;
item = null;
}
}
