Detecting the ground with raycasting

Hi, I'm currently working on a platformer and I wanted to detect the ground using raycasts for jumping

This is the code I wrote in order to do that.

Code (CSharp):

1.     private float distToGround;
2.  
3.     void Start()
4.     {
5.         distToGround = collider.bounds.extents.y;
6.     }
7.  
8.     bool isGrounded ()
9.     {
10.         return Physics.Raycast(transform.position, -Vector3.up, distToGround + 0.1);
11.     }
12.  

I thought that this would work but I get these errors.


error CS1502: The best overloaded method match for `UnityEngine.Physics.Raycast(UnityEngine.Vector3, UnityEngine.Vector3, float)' has some invalid arguments


error CS1503: Argument `#3' cannot convert `double' expression to type `float'


These may have fairly simple solutions but I've been trying to fix the problem for 30 minutes and whenever Id o it always seems to add more errors.

I would greatly appreciate some assistance.

 

You are adding a double to "distToGround", resulting in a double as parameter. There however is no overload for physics.Raycast that accepts a double as one of its arguments.

Solution:

Code (CSharp):

1. bool isGrounded()
2. {
3.         return Physics.Raycast(transform.position, -Vector3.up,  distToGround + 0.1f);
4. }

Notice the 'f' at the end of the line. This makes the double a float.

 

Oh wow, thank you. I can't believe I didn't notice something so simple. Then again, I suppose it happens to everyone.

Thank you very much.

 

More than a lot of us would like to admit.

 

These types of issues tend to be easy to overlook, and they occur far more often than I'd like (granted I rather don't have them occur at all). Fortunatly they are rather easy to solve when you spot them...

In any case, glad I could be of help.

 

Thanks again.