koobas.hobune.stream
Using raycast from camera to aim shots
I'm trying to make the player camera use a raycast that aims at the center of the screen. I'm trying to have one of my weapons aim at the raycast hit on its own so that, when I press the mouse button to shoot this weapon, it targets the raycast hit.
However, I've run into some problems. One of these problems involves the following line of C# code:
Ray ray = camera.ScreenPointToRay(Input.mousePosition);
The issue stems from the "ScreenPointToRay" portion of the code. When I copied and pasted the code into MonoDevelop, this very part of the script displays in red. Is something wrong with the code? Is the documentation somehow incorrect?
Hi,
If it's red it means that 'ScreenPointToRay' is not a member of 'camera'. Since your code seems to be good, the problem must come from 'camera'. Try replacing 'camera' by 'Camera.main' (which returns the camera tagged 'Main Camera') ? Is 'camera' the gameobject or the camera component ?
It's the camera itself. I don't think I've heard of the "camera component".
P.S.: what is "Camera.main"?
P.S.S.: the code below is what first brings up the player's camera in the script:
public Camera playerCamera;
Camera.main is a piece of code that will always return the camera with the "$$anonymous$$ain Camera" tag. It's like GameObject.Find("$$anonymous$$ain Camera") !
Alright so you do take the component, try changing the type to
public GameObject playerCamera;
If you are, in fact, declaring the Camera using
public Camera playerCamera;
and calling it using
Ray ray = camera.ScreenPointToRay(Input.mousePosition);
then that's a big part of the problem right there.
"camera" is something you can jump to/between, like "gameObject" and "transform" (i.e. gameObject.transform.position). Your variable is "playerCamera" which means you're not actually calling it. Ins$$anonymous$$d, you're calling the camera component of the object the script is attached to, whether it has one or not.
Okay, but now this brings up another problem. As soon as I change "Camera" to "GameObject", the ".ScreenPointToRay" portion of the code turns red. Is there an alternative to this code piece?
Alright,
Try calling the camera with the type GameObject (`public GameObject playerCamera;`)
Then, in your ray, call the camera component of the object:
Ray ray = playerCamera.GetComponent<Camera>().ScreenPointToRay(Input.mousePosition);
