Camera Goes Through Things

Unity Engine
1

I basically have a player with a camera following him with the smooth follow script. The problems is that when you turn a certain way, you can see through objects, like the houses. I know this is probably a really simple issue and I sound like a big noob right now (which I am) but I would appreciate anybody who could give me a start on this.

Thanks. :wink:

2

Our game just do a raycast from the player character towards the camera each frame.
It then checks if this position (the RaycastHit.point) is closer to the player, than the camera. If thatā€™s the case, something must be between the player and the camera, and the camera will move to the position of the RaycastHit.point position.

But as I havenā€™t made the system myself, it may be I have the details wrong. And it only works if your objects has collisions, obviouslyā€¦ :slight_smile:

Good luck.

3

Sorry- Iā€™m still learning scripting and havenā€™t done anything with raycasting yet.

So how would I at least start the script off?

4

Anybody?

5

Is it possible you are looking at the objects from the wrong side when this happens? (Like say moving inside a house and looking outwards?) Unity doesnā€™t display the reverse side of an object unless you specifically design it that way. Usually, the easiest way to do this is to make the original object double-sided in the 3D modelling app.

6

Sorry to bump this, but i have begun to try and fix this problem again, and this is what i have so far, attached to the main camera:

function Update () {
    var fwd = transform.TransformDirection (Vector3.forward);
    var up = transform.TransformDirection (Vector3.up);
    if (Physics.Raycast (transform.position, fwd, 2)) {
        transform.Translate(0,0,5);
    }
    if (Physics.Raycast (transform.position, -up, 2)) {
        transform.Translate(5,0,0);
    }
}

actually not working that bad, but i could use a little help improving it. Right now it moves through the object to get closer to the player, but i want it to move around the object. also, the movement is really sharp. I just really quickly typed this up, so its not much though :stuck_out_tongue:

I am not expecting anybody to write it for me either, just some tips would be nice :wink:

Thanks.

7

Iā€™m bumping this because i really need some help. Anybody?

8

It sounds like you need your camera to have itā€™s own collision component associated with it and then react accordingly. Your problem will prove to be quite complicated though as 3rd person cameras are not ā€œsimpleā€ things to handle completely.

9

So, am i on the right path with the above script or is there a different method i should use?

10

The camera is shifted sideways quite a long way when the raycast detects an obstacle. You might want to try moving just a short distance. Since this will happen every frame, it will quickly move the camera out of the way, but will do so much more smoothly:-

transform.Translate(0,0,distancePerSecond * Time.deltaTime);

Multiplying the distance by Time.deltaTime will make the cameraā€™s speed independent of the framerate.

11

Got this

function Update () {
    var fwd = transform.TransformDirection (Vector3.forward);
    
    var distancePerSecond = Time.deltaTime * 10;
    
    if (Physics.Raycast (transform.position, fwd, 2)) {
        transform.Translate(0,0,distancePerSecond);
    }
    
}
12

Now this:

function Update () {
    var fwd = transform.TransformDirection (Vector3.forward);
    var lft = transform.TransformDirection (Vector3.left);
    
    var distancePerSecond = Time.deltaTime * 5;
    
    if (Physics.Raycast (transform.position, lft, 1)) {
        transform.Translate (distancePerSecond,0,0);
    }
    
    if (Physics.Raycast (transform.position, -lft, 1)) {
    	transform.Translate (-distancePerSecond,0,0);
    }
    
    if (Physics.Raycast (transform.position, fwd, 2)) {
    	transform.Translate (distancePerSecond,0,0);
    }
    
}

Working pretty well, let me know what i can do to make it better.