koobas.hobune.stream
Rolling ball with rigidbody
I'm trying to make simple ball game where player is supposed to roll a ball. I get ball rolling, that's not a problem but I'm unable to make it "speed up".
My current code looks like this:
void update() {
force = Vector3(Input.GetAxis("Horizontal") * maxspeed * Time.deltaTime, 0, Input.GetAxis("Vertical") * maxspeed * Time.deltaTime);
}
void fixedUpdate() {
rigidbody.addTorque(force);
}
This works so that ball accelerates quite quickly to maxspeed and stays there. But I would like to speed up more when axis button is kept pressed for longer times. How I can achieve that?
Time.deltaTime inside of Update is different from the Time.deltaTime in FixedUpdate- if you create the value in one, it'll be wrong in the other!
It still records the time the key is pressed, so it doesn't matter. 1 second in update is the same as 1 second in fixedupdate. I advice to use it in Update() because that function is called more often so results would be more accurate.
You will have to record the time the keys are pressed. You can use an if-statement to check if a key/axis is pressed and Time.deltaTime to check how much time passed since the frame is complete.
void Update () {
if( Input.GetAxis(" --the axis you want to check-- ") != 0 ){
timePressed += Time.deltaTime; //make a new var to keep track of the time.
increaseMultiplier();
}
else{
timePressed = 0; //The button is not being pressed anymore.
decreaseMultiplier();
}
}
You will have to make a multiplier variable to apply to the speed of the object and adjust that value. I hope this helps.
Thank you, this got me on right track. I had to change code a bit from using torque to applying force due limitation in angular velocity. I tried to set higher angular velocity limit but it creates unwanted rotation.
Apparently rigidbody has defined maximum angular velocity (7 by default). I can change it but then feeling of rotation is something that I do not want.
Maybe I should use force (not torque) and do rotating ball using transform?
