koobas.hobune.stream
store increment info on true 'without losing' it when bool returns false.
I've just started learning programming and managed to script pong. This is the ricochet script for the ball. I want to add +1 to speed when the ball hits a paddle (Hitpad) but I lose the +1 when the bool returns to false. I thought this would be easy after everything but it's doing my head in. Please help.
I've tried ++ operator and even calling a method inside update to increment. But no matter what i put under bool, it won't count anymore when it turns false. So the information isn't stored seperately/independently from the bool. Is there maybe a way to increment the variable speed and then cut the connection it has from the bool? Or any other solution? Adding +1 to speed doesn't work in the collision method since it only gets called once and won't get stored.
I want to add 1 to speed every time the collider hits. Really trying to get this one...
Here's the script:
C#
public class DotScript : MonoBehaviour {
public bool Hitwall;
public bool Hitpad;
public float speed;
void FixedUpdate ()
{
speed = 4;
speed = speed * Time.deltaTime;
transform.Translate (speed, speed, 0);
//if hit is true this statement enables, if hit is false it disables.
if (Hitwall)
transform.Translate (0, -speed * 2, 0);
if (Hitpad)
{
transform.Translate (-speed * 2, 0, 0);
speed = speed + 1; //problem: when bool is false the increment is gone with it.
}
}
void OnCollisionEnter (Collision hit)
{
if (hit.gameObject.tag == "wall")
Hitwall = !Hitwall;
if (hit.gameObject.tag == "paddle")
Hitpad = !Hitpad;
}
}
Any critique or tips are much appreciated btw.
So I just figured that it was because I declared the speed variable inside of my update function...
But now the ball speeds up and DIRECTLY speeds down to 0... And I have no clue why...
public class DotScript : $$anonymous$$onoBehaviour {
public bool Hitwall;
public bool Hitpad;
public float speed = 4;
void Update ()
{
speed = speed * Time.deltaTime;
transform.Translate (speed, speed, 0);
//if hit is true this statement enables, if hit is false it disables.
if (Hitwall)
transform.Translate (0, -speed * 2, 0);
if (Hitpad)
{
transform.Translate (-speed * 2, 0, 0);
speed = speed + 1;
}
}
void OnCollisionEnter (Collision hit)
{
if (hit.gameObject.tag == "wall")
Hitwall = !Hitwall;
if (hit.gameObject.tag == "paddle")
Hitpad = !Hitpad;
}
}
Okay I got it to work by doing it this way...
public class DotScript : $$anonymous$$onoBehaviour {
public bool Hitwall;
public bool Hitpad;
public float speed = 4;
void Update ()
{
transform.Translate (speed * Time.deltaTime, speed * Time.deltaTime, 0);
//if hit is true this statement enables, if hit is false it disables.
if (Hitwall)
transform.Translate (0, -speed * Time.deltaTime * 2, 0);
if (Hitpad)
transform.Translate (-speed * Time.deltaTime * 2, 0, 0);
}
void OnCollisionEnter (Collision hit)
{
if (hit.gameObject.tag == "wall") {
Hitwall = !Hitwall;
speed = speed + 1;
}
if (hit.gameObject.tag == "paddle")
Hitpad = !Hitpad;
}
}
But now I need to know what the difference is between this:
speed = speed * Time.deltaTime;
transform.Translate (speed, speed, 0);
and this:
transform.Translate (speed * Time.deltaTime, speed * Time.deltaTime, 0);
can someone help me please? I've grown wiser already, just need to make sense out of this.
I just figured it out...
speed = speed * Time.deltaTime;
Doesn't work cause:
deltatime with 60fps is 0.016 * 4 (speed) = 0.064 = speed
causing speed to attain a new value. Being in the update function; the calculation runs again:
(speed) 0.064 * (speed x deltatime) 0.016 = 0.001024 = speed
0.001024 * 0.016 = 0.000016384 = speed
This exponentially goes on as a quadratic function until there are too many zeroes for a float, resulting in a value of 0 for the float speed.
