koobas.hobune.stream
How to stop movement, when mouse is off screen.
I'm hoping there's someone out there that can help me with a small problem.
Currently I have an Input Manager attached to the main camera to allow the user to pan around the map by moving the mouse to the edges of the window, but I've encountered a slight problem which I've tried to fix myself to no avail.
If the mouse goes outside of the window, the panning still happens, which I find irritating when I'm debugging or using other applications. So I am hoping that someone can help me to stop the movement happening when the mouse is outside the game window.
Here is the code for my Input Manager.
using UnityEngine;
using System.Collections;
public class InputManager : MonoBehaviour {
public Vector3 position = new Vector3(0,0, -10);
public int boundary = 50;
public int speed = 4;
private int screenBoundsWidth;
private int screenBoundsHeight;
// Use this for initialization
void Start()
{
screenBoundsWidth = Screen.width;
screenBoundsHeight = Screen.height;
}
// Update is called once per frame
void Update()
{
if (Input.mousePosition.x > screenBoundsWidth - boundary) {
position.x += speed * Time.deltaTime;
}
if (Input.mousePosition.x < 0 + boundary) {
position.x -= speed * Time.deltaTime;
}
if (Input.mousePosition.y > screenBoundsHeight - 10) {
position.y += speed * Time.deltaTime;
}
if (Input.mousePosition.y < 0 + boundary) {
position.y -= speed * Time.deltaTime;
}
Camera.mainCamera.transform.position = position;
}
}
Thank you for your time.
EDIT
I have come up with a hacky work around, but it still causes the movement to happen in certain locations around the outside of the window. I am hoping someone can come up with a better solution.
if (Input.mousePosition.x < screenBoundsWidth && Input.mousePosition.y < screenBoundsHeight) {
if (Input.mousePosition.x > screenBoundsWidth - boundary) {
position.x += speed * Time.deltaTime;
}
}
if (Input.mousePosition.x > 0 && Input.mousePosition.y > 0) {
if (Input.mousePosition.x < 0 + boundary) {
position.x -= speed * Time.deltaTime;
}
}
if (Input.mousePosition.y < screenBoundsHeight && Input.mousePosition.x < screenBoundsWidth) {
if (Input.mousePosition.y > screenBoundsHeight - 22) {
position.y += speed * Time.deltaTime;
}
}
if (Input.mousePosition.y > 0 && Input.mousePosition.x > 0) {
if (Input.mousePosition.y < 0 + boundary) {
position.y -= speed * Time.deltaTime;
}
}
A good start to your answer is to look into $$anonymous$$athf.Clamp and some how use this to clamp the mouse to the resolution to the screen
Ah, thanks I'll have a look into this shortly. I've not looked into $$anonymous$$athf.Clamp.
Solution solved by Jacek Przemieniecki over on Stack Overflow.
3 Ideas:
Rect screenRect = new Rect(0,0, Screen.width, Screen.height);
if (!screenRect.Contains(Input.mousePosition))
return;
The same can be written more verbously as:
float mouseX = Input.MousePosition.x;
float mouseY = Input.MousePosition.y;
float screenX = Screen.width;
float screenY = Screen.height;
if (mouseX < 0 || mouseX > screenX || mouseY < 0 || mouseY > screenY)
return;
// your Update body
...which is pretty much the same as your "hacky" solution (which is completely valid imho).
Another option is to create 4 Rect objects for each screen border, then check if mouse is inside those rects. Example:
public float boundary = 50;
public float speed = 4;
private Rect bottomBorder;
private Rect topBorder;
private Transform cameraTransform;
private void Start()
{
cameraTransform = Camera.mainCamera.transform
bottomBorder = new Rect(0, 0, Screen.width, boundary);
topBorder = new Rect(0, Screen.height - boundary, Screen.width, boundary);
}
private void Update()
{
if (topBorder.Contains(Input.mousePosition))
{
position.y += speed * Time.deltaTime;
}
if (bottomBorder.Contains(Input.mousePosition))
{
position.y -= speed * Time.deltaTime;
}
cameraTransform.position = position;
}
The tricky part here is that Rect coordinates have Y axis pointing down and Input.mousePosition has Y pointing up... so bottomBorder Rect has to be on the top, and topBorder has to be at the bottom. Left and right borders are not affected.
the first one worked like magic for me, thanks for updating your question with the answer
Hey, thanks for that, it's exactly what I was looking for. Now I don't have to worry about the mouse triggering when it's outside the editor during debugging.
As of Unity 5.2, Input.mousePosition is now limited by the screen bounds, so it cannot detect when the cursor is outside of the window. However, Input.GetAxis("Mouse X") and Input.GetAxis("Mouse Y"), or whatever you call them, continue to function outside of the window. If Sensitivity is set to 2, they return the cursor's movement in pixel coordinates. Knowing that, it is easy to find MousePosition.
Vector2 MousePosition;
void Update()
{
if(Input.mousePosition.y > 0 && Input.mousePosition.y < Screen.height && Input.mousePosition.x > 0 && Input.mousePosition.x < Screen.width)
{
MousePosition = Input.mousePosition;
} else
{
MousePosition += new Vector2(Input.GetAxis("Mouse X"), Input.GetAxis("Mouse Y"));
}
}
This works like a charm! And the step of setting the sensitivity is not really a requirement with this code logic. At least for the purposes of detecting whether the mouse is off-screen, without caring about precision off-screen.
Here is another reference point to look at http://wiki.unity3d.com/index.php/Custom_2D_Pointer
I see this restricts it going off screen, how about stopping movement when the mouse is off screen, any ideas?
I have added in my code a way to clamp, but it doesn't give me the desired effect. Although it will be useful anyway.
if (Input.mousePosition.y < 0 + boundary) {
position.y -= speed * Time.deltaTime;
}
position.x = $$anonymous$$athf.Clamp(position.x, -2, 2);
position.y = $$anonymous$$athf.Clamp(position.y, -2, 2);
Camera.mainCamera.transform.position = position;
I would like for the movement to completely stop when the mouse is not in the game window, but I can't find a way to do this.
if mouse position = null?
I've tried this, but it's not helped. Thanks for the attempt though.
