RayCast Hit

Questions & Answers
1

I have a script that I am using for a game. I want it to change a cubes (a cube will be referenced as a block from here) texture when it is clicked with the left mouse button. There are multiple blocks on the screen and I want only one. Here is the code:-

var hit : RaycastHit;
var BlockTexture : Texture;

function Update () {
	if(Input.GetMouseButtonDown(1))
	{
		TextureBlock();
	}
}

function TextureBlock()
{
	if(HitBlock())
	{
		cube.renderer.material.mainTexture = BlockTexture;
	}
}

function HitBlock() : boolean
{
	return Physics.Raycast(transform.position, transform.forward, hit, range);
}

Where am I going wrong. I cannot figure out where I am going wrong. The errors I am getting are:-

Assets/CraftingTest/RayCastHit.js(15,17): BCE0005: Unknown identifier: ‘cube’.

And

Assets/CraftingTest/RayCastHit.js(21,31): BCE0023: No appropriate version of ‘UnityEngine.Physics.Raycast’ for the argument list ‘(UnityEngine.Vector3, UnityEngine.Vector3, UnityEngine.RaycastHit, function(int): System.Collections.Generic.IEnumerable.)’ was found.

Answers are appreciated.

2

Well one is that cube is an unknown variable. Assuming that your gameobject is named cube, you can remove it, or change it to this

renderer.material.mainTexture = BlockTexture;
or
this.renderer.material.mainTexture = BlockTexture;

Second, have you defined “range”? I looks like you haven’t and the compiler thinks you are trying to call a method. Try changing range to a number like 1000.

3

Turns out that I was doing it all wrong… Here is the code I used and it worked:-

function OnMouseDown () {
	this.gameObject.renderer.material.color = Color.red;
}