koobas.hobune.stream
How to change a light's intensity between two values by pressing a key?
Hello, i'm still in the beginning of my lessons and I would like to know how to change the intensity of a light object to a determined value when I press a key and when I press it again it goes back to the previous value, here is the draft of my script that I'm still working on, and...if you have time, how to keep the intensity changes when I go to another scene and comeback. Thanks in advance!
Light2D GB_light;
private float NewIntensity = 0.75f;
private float OldIntensity = 2f;
private float Intensity;
public GameObject PL_colision;
void Start()
{
Intensity = OldIntensity;
}
private void Awake()
{
GB_light = GetComponent<Light2D>();
}
void OnTriggerEnter2D(Collider2D other)
{
// Check if the object that is colliding has a tag Player
if (other.tag.Equals("Player"))
{
// This is a light, make this our current light
PL_colision = other.gameObject;
}
}
void Update()
{
if (PL_colision)
{
if (Input.GetKeyDown("e"))
{
Intensity = NewIntensity;
else
{
GB_light.intensity = OldIntensity;
}
}
}
}
void OnTriggerExit2D(Collider2D other)
{
// Check if the gameobject we're exiting a collision with is the current door
if (other.tag.Equals("Player") && other.gameObject.Equals(PL_colision))
{
PL_colision = null;
}
}
Hello @MATCAVERNA,
For the light switch just need a few lines:
public float intensity_one = 0.75f;
public float intensity_two = 2f;
void Start(){
if(PlayerPrefs.HasKey("GB_light")
Gb_light.intensity = PlayerPrefs.GetFloat("GB_light");
}
void Update(){
if(Input.GetKeyDown(KeyCode.E){
if (GB_light.intensity == intensity_one)
GB_light.intensity = intensity_two;
else
GB_light.intensity = intentisty_one;
PlayerPrefs.SetFloat("GB_light", GB_light.intensity);
}
So when you press E its change the light value between two, there is more compact way to do it but this one its much clearer. Lines with PlayerPrefs are for keeping the value between scenes. With SetFloat you save a value and with GetFloat you load it. Just check if the value have been set before with an HasKey.
You can read more about PlayerPrefs here: https://docs.unity3d.com/ScriptReference/PlayerPrefs.html
Hope that help !,
Raph
