How to detect mouse movement as an input

Question

Hi all, I am in the process of converting a project from keyboard only input to keyboard and mouse input. The keyboard is used for vertical and horizontal movement, and the mouse is used for rotation. This is for 2.5d game where rotation only occurs on the X axis. I can get the player object to rotate to follow the mouse already using a raycast from the camera to the mouse pointer. My question is this however:

How can I use a change in the mouses position (i.e if the mouse moves left) to initiate an action. So in pseudo code basically what I am trying to do is this (in UnityScript not C#):

 if (Mouseposition moves left)
 {
    initiate actions;
 }

I should mention that I have tried using a variable that compares the initial vector3 position of the mouse (which is updated every 0.1 seconds) with the current position of the mouse but to no avail. The reason I want to do this is so I can use AddTorque rather than transform.Rotate I've been toying around with this for a couple of hours now and it's got me stumped. :-(

Any Input would be greatly appreciated. I'm not asking for code, just help with the logic I will need for this.

Answer 1

Best Answer

Answer by save · May 29, 2011 at 04:26 PM

If I understood you correctly you can simply use:

 if(Input.GetAxis("Mouse X")<0){
     //Code for action on mouse moving left
     print("Mouse moved left");
 }
 if(Input.GetAxis("Mouse X")>0){
     //Code for action on mouse moving right
     print("Mouse moved right");
 }

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OoglyWoogly · Jun 03, 2011 at 12:40 PM 0

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This is exactly what I needed. $$anonymous$$uch easier and more appropriate than getting the object to follow the mouse. Thanks a lot. P.S Sorry about the late reply. I've been having problems logging in.

save · Jun 03, 2011 at 06:32 PM 1

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Awesome mate! Yeah sometimes we look too deep into a problem to see the easy solution :)

tayyab43 · Nov 10, 2013 at 12:18 PM 0

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Is this exactly the same in c#?

FLASHDENMARK · Nov 10, 2013 at 01:39 PM 0

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Yes it is.

_Grocfex0000 · Oct 25, 2014 at 06:13 PM 0

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O$$anonymous$$G that feeling when i found this piece of Good Work tnxtnx i was looking for this 4 hours and i couldn't find the right thing, Tnx

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Answer 2

Answer by timuther · Jan 06, 2016 at 11:31 AM

 bool HasMouseMoved()
     {
         //I feel dirty even doing this 
         return (Input.GetAxis("Mouse X") != 0) || (Input.GetAxis("Mouse Y") != 0);
     }

That's what I've used but I wonder if there's a more efficient way to get the axis than passing in a string? Seems very clunky.

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Answer 3

OMG! You have no idea how finding this made my week. Yes WEEK. I have a boat controller and when I turn I wanted it to bank into the turn to look more realistic. The code I had worked transform.Rotate(0, 0, -(Input.GetAxis("Mouse X")) Time.deltaTime speed );

but after a few turns left and right , when going straight the boat would still be tilted so spent tons of hours trying to figure out how to right the boat. Storing temp rotation values, animating the bank and trying to trigger those. 3 very long days of failure but THIS!!! this is so simple. If I am steering, the boat banks, if I am not steering, it slerps back to default. THANKS SO MUCH for this amazingly simple yet life saving info

 using UnityEngine;
 using System.Collections;
 
 public class boatBank : MonoBehaviour {
     //this script goes on a child object(boat) of the main gamobject
     public float speed = 4f;
     public Transform target;//this a child of the main gameobject with same transforms as boat default position this script does not effect it
     public float damping = 2f;
 
     void Start () {
     }
 
     void Update () {
         
         if(Input.GetAxis("Mouse X")<0)
         {
             transform.Rotate(0, 0, -(Input.GetAxis("Mouse X")) * Time.deltaTime * speed );
             print("Mouse moved left");
         }
     else if(Input.GetAxis("Mouse X")>0)
         {
             transform.Rotate(0, 0, -(Input.GetAxis("Mouse X")) * Time.deltaTime * speed );
             print("Mouse moved right");
         }
         else  
         {
             var rotation = Quaternion.LookRotation(target.position - transform.position);
             transform.rotation = Quaternion.Slerp(transform.rotation, rotation, Time.deltaTime * damping);
             print("boat straightening out");
             
         }
         
     }
 }

Answer 4

Answer by gigmelepcha9 · Aug 15, 2018 at 08:07 AM

Hey Guys can you help me, i am stuck while making my first : First player shooter, i am not able to rotate my screen. i used In Input.GetAxisRaw(Mouse X) but i am getting 0 ,0,0 as the output

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Hello_I_Am_A_Robot · Jun 03 at 10:24 AM 0

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Yeah its Input.GetAxis("Mouse X") not Input.GetAxisRaw(Mouse X)

How to detect mouse movement as an input

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