Emission Script

Questions & Answers
1

I’m having a bit of trouble
I have two simple scripts.

One, is if I press the space key, the emission turns off and will turn on again if I let go of the space bar

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class FlitsUit : MonoBehaviour
{
    // 
    public Material material;

    private void Update()
    {
        if (UnityEngine.Input.GetKey(KeyCode.Space))
        {
            material.DisableKeyword("_EMISSION"); ;

        }
        else
        {

            material.EnableKeyword("_EMISSION");
        }
    }

}

The other one is, If I press E, the emission will turn on and If I press D it will turn off.

They both work, but If i combine them, which is needed for the behaviour I want, they “D” Key doesn’t work anymore. It will only turn off for a split second and come on again.

The code for the emission script is

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class KopLamp : MonoBehaviour
{
    public Material material;




    void Update()
    {

        if (Input.GetKeyDown(KeyCode.E))
        {
            material.EnableKeyword("_EMISSION");
        }

        if (Input.GetKeyDown(KeyCode.D))
        {

      
            material.DisableKeyword("_EMISSION");


        }
    }
}

Could someone help me with this?
Thanks!

2

The problem lies in the FlitsUit class. Look at the Update. If you hold down Spacebar, the following piece of code evaluates to true every frame:

	if (UnityEngine.Input.GetKey(KeyCode.Space))
	{
		material.DisableKeyword("_EMISSION"); ;

	}

But when you stop holding Spacebar down, the following piece of code evaluates to false and is executed every frame:

	else
	{

		material.EnableKeyword("_EMISSION");
	}

You can create some sort of communication between your scripts (I used bool “boo”), so they could better understand each other’s behaviour:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class KopLamp : MonoBehaviour
{
	public Material material;
	public bool boo;
	
	void Update(){
		if (Input.GetKeyDown(KeyCode.E)){
			boo = false;
			//material.EnableKeyword("_EMISSION");
		}
		
		if (Input.GetKeyDown(KeyCode.D)){
			boo = true;
			//material.DisableKeyword("_EMISSION");
		}
	}
}

and the second script:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class FlitsUit : MonoBehaviour
{
	public Material material;
	KopLamp kopLamp;
	
	void Awake(){
		kopLamp = FindObjectOfType<KopLamp>();
	}
	
	void Update(){
		if (Input.GetKey(KeyCode.Space)){
			material.DisableKeyword("_EMISSION");
		} else {
			if (kopLamp.boo){
				material.DisableKeyword("_EMISSION");
			} else {
				material.EnableKeyword("_EMISSION");
			}
		}
	}
}