How to use a raycast to interact with an object?

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1

I wrote a script to make a raycast from the player and if it hits a weapon that I have on the wall I can press q and it will deduct one Level Point and make my damage go up. But I can’t seem to get it to work.

function Update(){
    if (Input.GetButtonDown("Fire1")){
    Shoot();
    }
    if(Input.GetKeyUp("q"))
{
	print("You pressed q");
		if(Physics.Raycast(transform.position,transform.forward,hit,5))
		{
		print("The Raycast is working");
			if (hit.collider.gameObject.CompareTag("Weapon Upgrade"))
			{
			print("It knows that the weapon is a Weapon Upgrade");
				if (Score.levelPoints > 0)
				{
				print("It is applying the upgrade.");
				Score.levelPoints -=1;
				playerDamage += 50;
				}
			}
		}
}

It prints you pressed q and the raycast is working but it doesn’t print any farther than that even when I am looking directly at the gun and am really close to it. I would also like to be able to print out a message on the screen to tell the player that they can press q to upgrade it.

Does your gun have a collider? Insert this just below the print() statement: Debug.DrawRay(transform.position, transform.forward * 5.0); ...and see if the ray is really hitting the object.

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Also debug what you hit: print("The Raycast is working, and hit: " + hit.collider.gameObject);

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Yes. Well it has a rigid body. When I put that code under my print() statement it doesn't make a line...

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It has to have a collider too, not only a rigidbody. Check for that. Check also that it does have the tag assigned in the inspector.

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1 Answer

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Never mind I figured it out. It needed a box collider. Thank you guys very much.