koobas.hobune.stream
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I need to be able to get an object to attach to another one on mouse hold
My game is a magnet maze, where you attach a magnet from underneath to a cube on top. It just needs to be below it to be able to able. There's an indicator set up to show when a cube is above the magnet but I don't yet have the code that enables the magnet to move the cube around wherever it moves.
This is my current code for the magnet:
using UnityEngine; using System.Collections;
public class Magnet : MonoBehaviour {
public GameObject indicator;
public Color attachableColour;
public Color detachedColour;
public CubeManager cubeManager;
public GameObject magnetisedCube;
public bool attaching;
public bool attachable;
public float attachRadius;
private float distToCube;
private GameObject closestCube;
private float distToClosestCube;
private Vector2 magPos;
// Use this for initialization
void Start () {
}
// Update is called once per frame
void Update ()
{
if (attaching)
{
magPos = new Vector2(transform.position.x, transform.position.z);
foreach(GameObject cube in cubeManager.cubes)
{
Vector2 cubePos = new Vector2(cube.transform.position.x, cube.transform.position.z);
distToCube = Vector2.Distance(magPos, cubePos);
if (distToCube <= attachRadius)
{
if (closestCube == null)
{
distToClosestCube = distToCube;
closestCube = cube;
}
else if (distToCube < distToClosestCube)
{
distToClosestCube = distToCube;
closestCube = cube;
}
}
}
if (closestCube != null)
{
attaching = false;
magnetisedCube = closestCube;
}
}
else
{
attachable = false;
magPos = new Vector2(transform.position.x, transform.position.z);
foreach(GameObject cube in cubeManager.cubes)
{
Vector2 cubePos = new Vector2(cube.transform.position.x, cube.transform.position.z);
distToCube = Vector2.Distance(magPos, cubePos);
if (distToCube <= attachRadius)
{
attachable = true;
break;
}
}
if (attachable == false)
{
indicator.renderer.material.color = detachedColour;
}
else
{
indicator.renderer.material.color = attachableColour;
}
}
if (attachable)
{
if(Input.GetMouseButtonDown(0))
{
attaching = true;
}
}
else
{
magnetisedCube = null;
}
}
}
If someone can tell me what I need to add to this then I'd be very grateful.
Lots of ways of doing this but it depends on your game layout.
Do you just want to be able to drag the object with the mouse?
I found a script on here a while ago that'll do it.
using UnityEngine;
using System.Collections;
[RequireComponent(typeof($$anonymous$$eshCollider))]
public class GizmosController : $$anonymous$$onoBehaviour
{
private Vector3 screenPoint;
private Vector3 offset;
public bool IsDragable = true;
void On$$anonymous$$ouseDown()
{
if(IsDragable) // Only do if IsDraggable == true
{
screenPoint = Camera.main.WorldToScreenPoint(gameObject.transform.position);
offset = gameObject.transform.position - Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPoint.z));
}
}
void On$$anonymous$$ouseDrag()
{
if(IsDragable) // Only do if IsDraggable == true
{
Vector3 curScreenPoint = new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPoint.z);
Vector3 curPosition = Camera.main.ScreenToWorldPoint(curScreenPoint) + offset;
transform.position = curPosition;
}
}
}
Just put that on your cube.
