I've searched different sources but I couldn't find what I directly need. I use a maincamera in my scene and when some conditions are satisfied, I want my camera to animate to the point that I will get from an object which is in the scene. I tried to use Animation Curves but didn't work exactly how I wanted. So I thought of changing the values of the keys of the animation. Is there way that I can change keys and at the same time animation would animate how I want it to animate.
I don't think animations are what you are looking for. I highly suggest you using a Tween asset or writing your own tweening library. Here is an example tweeting code that will move your object:
private void Start()
{
StartCoroutine(Move(5));
}
private IEnumerator Move(float duration)
{
var startPos = gameObject.transform.position;
var targetPos = new Vector3(0, 10, 0);
var timer = 0f;
while (timer < duration)
{
transform.position = Mathf.Lerp(startPos, targetPos, timer / duration);
timer += Time.deltaTime;
yield return null;
}
transform.position = targetPos;
}
This piece of code will take your gameObject and move it to the targetPos in duration seconds. What we do here is essentially called linear interpolation, which means that we change a value linearly from the start value to end value, and timer / duration is called interpolation value. The interpolation value must be between 0 and 1, where inputting 0 will give you the start value and 1 will give you the end value. You can smooth this interpolation value to get smoother movements.
Related
I want a knock Back effect with this code but I dont know how.
I am new to coding still learning stuff !
This is my code where i want the KnockBack to have effect.
PlayerMovement.MyBody is a script with the rigidbody attached.
/// <summary>
/// If We CanDamage LifeScorecount minus 1 and stes CanDamage to false and starts Coroutine.
/// If Life is higher than 0 change thet text to the new life
/// If life is 0 then stop Time and start Coroutine RestartGame
/// </summary>
public void DealDamage()
{
if(CanDamage)
{
Anim.Play("Stun");
LifeScoreCount--;
Vector2 direction = (transform.position, 0);
PlayerMovement.myBody.AddForce(direction * -10f);
if (LifeScoreCount >= 0)
{
TextLife.text = "x" + LifeScoreCount;
}
if (LifeScoreCount == 0)
{
Time.timeScale = 0f;
StartCoroutine(RestartGame());
}
CanDamage = false;
StartCoroutine(WaitForDamage());
}
}
It depends on how you implemented your Movement and how you want your knock back to look like.
Assuming you simply want to push the rigidbody away, you can add a force like you already tried. To use a "one-time" push, you can use ForceMode.Impulse.
For the direction you want to use two points. The transform.position of the object, getting pushed away, subtracted by the transform.position of the object, which is pushing the character away.
So if you want an enemy to push away the player, you could try something like this:
Vector3 playerPosition = new Vector3(transform.position.x, 0, transform.position.z);
Vector3 enemyPosition = new Vector3(enemy.transform.position.x, 0, enemy.transform.position.z);
Vector3 knockbackDirection = (playerPosition - enemyPosition).normalized;
float power = 2f
rb.AddForce(knockbackDirection * power, ForceMode.Impulse);
If you also want the knockback to work along the y-axis, just use the Transform positions instead of the new Vector3.
If you don't have the reference to the enemy, you maybe want to add a parameter, so whenever an enemy damages the player, he will pass his own position as a parameter.
And maybe consider using a SerializeField for the knockback force, so you can easily edit it in the editor.
I am trying to create a procedural gun controller, but I can't find why my gun behaves so weird when I change the fire mod to automatic. To understand this better, I will give an example: when I try to shoot by pressing the "Mouse0" key, on semi auto mod it works fine, it behaves like I want it to (the bolt kicks back when I shoot, the front barrel kicks back - I animate them with code instead of frame animations from Unity or a 3rd party soft like Blender), but..., when I change to automatic, the problem is not that I get errors, The animations of the moving pieces don't work as they should and are not triggered correctly.
I tried to use different methods for shooting(using the WaitForSeconds() and WaitForSecondsRealtime() while using coroutines). It didn't work. I tried using the time function with scaled and unscaled time in the update function. I still got the same results.
What should I do to?
This is the shoot function untill now:
void GunFireManagement()
{
if (fireType == fireMethod.single)
{
foreach (BlowBack anim in animations)
{
if (Input.GetKeyDown(KeyCode.Mouse0))
{
gunSoundClone = Instantiate(gunShootSound, this.transform.position, Quaternion.identity) as GameObject;
anim.piece.transform.position = anim.kickbackState.transform.position;
}
if (anim.piece.transform.position != anim.initialPosition.transform.position)
{
anim.piece.transform.position = Vector3.Lerp(anim.piece.transform.position, anim.initialPosition.transform.position, anim.speed);
}
Destroy(gunSoundClone, 0.5f);
}
}
if (fireType == fireMethod.auto)
{
foreach (BlowBack anim in animations)
{
if (Input.GetKey(KeyCode.Mouse0) && Time.time - lastFired > 1f/autoFireRate)
{
lastFired = Time.time;
gunSoundClone = Instantiate(gunShootSound, this.transform.position, Quaternion.identity) as GameObject;
anim.piece.transform.position = anim.kickbackState.transform.position;
}
if (anim.piece.transform.position != anim.initialPosition.transform.position)
{
anim.piece.transform.position = Vector3.Lerp(anim.piece.transform.position, anim.initialPosition.transform.position, anim.speed);
}
Destroy(gunSoundClone, 0.5f);
}
}
}
The issue is how you are using Vector3.Lerp. The first two arguments you pass to the method are supposed to be the start and end positions of the animation, and the third one, t, is supposed to be the progress of the animation from the start towards the end, as a value between 0 and 1.
You can calculate the value of t by dividing the time since the shot started with the duration of the animation. For example if the length of the animation is 2 seconds, and the short started 1 second ago, then t should be 0.5.
if(isFiring)
{
float timeSinceShotStart = Time.deltatime - lastFired;
// t = s / v
float animationDuration = 1f / anim.speed;
UpdateBlockBackAnimationState(timeSinceShotStart / animationDuration);
}
}
private void SetBlowBackAnimationState(float progress01)
{
foreach(BlowBack anim in animations)
{
Vector3 initialPosition = anim.initialPosition.transform.position;
Vector3 finalPosition = anim.finalPosition.transform.position;
anim.piece.transform.position = Vector3.Lerp(initialPosition, finalPosition, progress01);
}
}
I recommend you try to split up your code into smaller methods that are easier to understand. You are trying to do so many things in one generic "GunFireManagement" method that it becomes pretty difficult to keep track of all the different pieces :)
I also recommend considering using a tweening framework such as DOTween to make it easier to animate things over time.
My character is a car and I try to rotate it the direction it move, so far so good I succeeded to do that but once I stop moving the character flips back to the direction it was on the start.
Also how can I make my turns from side to the opposite site smooth ?
Here is my code so far:
[SerializeField] float driveSpeed = 5f;
//state
Rigidbody2D myRigidbody;
// Start is called before the first frame update
void Start()
{
myRigidbody = GetComponent<Rigidbody2D>();
}
// Update is called once per frame
void Update()
{
Move();
}
private void Move()
{
//Control of velocity of the car
float HorizontalcontrolThrow = CrossPlatformInputManager.GetAxis("Horizontal"); // Value between -1 to 1
float VerticalcontrolThrow = CrossPlatformInputManager.GetAxis("Vertical"); // Value between -1 to 1
Vector2 playerVelocity = new Vector2(HorizontalcontrolThrow * driveSpeed, VerticalcontrolThrow * driveSpeed);
myRigidbody.velocity =playerVelocity;
**//Direction of the car**
Vector2 direction = new Vector2(HorizontalcontrolThrow, VerticalcontrolThrow);
float angle = Mathf.Atan2(direction.y, direction.x) * Mathf.Rad2Deg;
myRigidbody.rotation = angle;
}
I'm not sure about this, but maybe that last line "myRigidbody.rotation = angle" being called every frame is what is making your car reset its rotation.
Maybe change it to "myRigidbody.rotation *= angle" or "myRigidbody.rotation += angle".
It looks like it may be because HorizontalcontrolThrow and VerticalcontrolThrow are going to be reset when you release the controls. If it's resetting to its original orientation, then what's happening is that until you move, those two values are going to be at their default value. You then move and it affects the rotation. But when you release the controls, those values are back to the starting values again, and so is your rotation.
What you therefore need to do is try to separate the HorizontalcontrolThrow and VerticalcontrolThrow from the rest of the code, which should only be activated when at least one of these two variables are not at their default setting (I can't remember what the axis functions return at the moment).
Edit:
An IF statement should suffice (some rough pseudo code):
if (horizontalAxis != default || verticalAxis != default)
{
Rotate/Move
}
I solved the snap rotation using Quaternion at rotation, the issiu I had with it was to convert it from 3d to 2d, through the guide of this clip: youtube.com/watch?v=mKLp-2iseDc and made my adjustments it works just fine !
I have a GameObject that takes position coordinates from a file. This GameObject moves with vibration rather than smoothly. (as if moving back and forth.)
Here is the code that provides the movement:
int counter = 0;
void Update()
{
var maxDistance = speed_* Time.deltaTime;
var oldPosition = transform.position;
var newPosition = Vector3.MoveTowards(transform.position, positions[counter], maxDistance);
var actualDistance = Vector3.Distance(newPosition, oldPosition);
var distanceRemainder = maxDistance - actualDistance;
if (distanceRemainder > 0.0001)
{
newPosition = Vector3.MoveTowards(newPosition, positions[counter], distanceRemainder);
counter++;
}
transform.localPosition = newPosition;
}
NOTE: The data read from the file is in the "positions" array (x,y,z coordinates).
When I lower the 300f value in the variable maxDistance, the vibration stops and the motion becomes more fluid. However, Gameobject speed is also slowing down. How can I ensure a fast and smooth movement?
SOLUTION:
While looking for a solution of the problem, I came across the this topic. It helped me learn the source of the problem.
I have observed that the GameObject is not vibrating in Scene view, it was moving smoothly. But the object seemed to be vibrating in GameView. The problem is not the moving object, it's the camera function I write to follow it.
The camera function that was written to follow the object has been updated and the problem has disappeared.
One can see more of the solution by going to Post #13 in the link above.
Thanks to everyone trying to help.
This is caused cause you are using your distanceRemainder as your maxDistanceDelta, which I think is incorrect, if you want a smooth movement, you should multiply it for the Time.deltaTime, try:
newPosition = Vector3.MoveTowards(newPosition, positions[counter], distanceRemainder*Time.deltaTime);
Or simply declare speed variable and do:
newPosition = Vector3.MoveTowards(newPosition, positions[counter], speed*Time.deltaTime);
I assume what you want is your object moving with a constant speed to the first position. Once it reaches it, move to the next one.
I would do it in a simple Coroutine which is better to understand and maintain than doing stuff in Update:
private void Start()
{
// todo assign positions
StartCoroutine(RunPositions());
}
private IEnumerator RunPositions()
{
foreach(var position in positions)
{
while(!Mathf.Approximately(Vector3.Distance(transform.position, position), 0))
{
var maxDistance = speed_* Time.deltaTime;
transform.position = Vector3.MoveTowards(transform.position, positions[counter], maxDistance);
// render and continue in the next frame
yield return null;
}
}
}
If you are fine with a precision of 0.00001 you can also simply use
while(transform.position != position)
instead.
I made a simple script that goes to one waypoint and then to the next.
My problem is that it seems to be a delay while going from waypoint1 to waypoint2 and i don't know why:
¿Why is that delay happening and how can i remove it?
using UnityEngine;
using System.Collections;
public class Missile : MonoBehaviour
{
public Vector3 finalTarget;
public Transform forwardObject;
public GameObject impactAreaPrefab;
float smoothingDelay = 0.1f;
bool fired = false;
bool powerPhase = true;
Vector3 currentTarget;
private void OnEnable() {
fire(new Vector3(-25.29f, 0.5f, -10.638f));
}
void fire(Vector3 coords) {
currentTarget = forwardObject.position;
finalTarget = coords;
Instantiate(impactAreaPrefab, finalTarget, Quaternion.identity);
fired = true;
}
void Update() {
if (!fired) {
return;
}
if (powerPhase && transform.position == currentTarget) {
powerPhase = false;
currentTarget = finalTarget;
smoothingDelay = 0.05f;
}
transform.position = Vector3.Lerp(transform.position, currentTarget, Time.deltaTime / smoothingDelay);
transform.rotation = Quaternion.Lerp(transform.rotation, Quaternion.LookRotation(Vector3.RotateTowards(transform.forward, currentTarget, 1, 0.0f)), Time.deltaTime / smoothingDelay);
}
}
That's happening, because you're using lerp not exactly properly. If you want to get linear movement you should cache your first argument (position/rotation on beginning) and provide increasing third parameter. This delay is happening because if your bullet is very close to final position and it's still trying to get there, but your current distance |finalPos - transform.position| is so small that your step Time.deltaTime/smoothingDelay is almost not moving it.
Vector3 startPos;
Vector3 finalPos;
float currentT = 0.0f;
void Update()
{
currentT += Time.deltaTime;
transform.position = Vector3.Lerp(startPos, finalPos, currentT);
}
Checking if Vector3 == Vector3 is also not a good idea. Use pattern from above and check if currentT is larger or equal to 1. If it's true then you're on final position. You get also some control over movement duration by dividing currentT.
So First thing read these post to get better understanding of Lerp function-
https://chicounity3d.wordpress.com/2014/05/23/how-to-lerp-like-a-pro/
http://www.kinematicsoup.com/news/2016/8/9/rrypp5tkubynjwxhxjzd42s3o034o8
You should have a better understanding of lerp now.
In summary lerp does a really simple thing. Say u have two values X and Y. For this example let us give them some value, X = 0, Y = 1, Now you want to get a value some percent between them, like u want to get a value which is 50% from X and Y. You can guess the answer is 0.5. The lerp equation for this would be
Mathf.Lerp(0, 1, 0.5f);
So simply- given two values, x and y, Mathf.Lerp returns a value that is t percent between them.
Now to properly use Lerp you need to cache the position before starting the lerp. Most times I use a coroutine to get this effect works pretty well and then u can use animation curve to change the third parameter to create some crazy good effects. For example on using a animation curve just comment i will write it.
For this problem of yours you have two options-
1) Lerp like a pro using Animation curve to manipulate the speed. Remember u can create animation curves in runtime too.
IENumerator Move(Transform toMove, Vector3 end, float duration){
Vector3 startPos = toMove.position;
float elapsed = 0f;
while(elapsed < duration){
elapsed += Time.deltaTime;
toMove.position = Vector3.Lerp(startPos, end, elapsed / duration);//manipulate the last parameter to move the object linearly
yield return null;//basically wait for next frame
}
toMove.position = end;//after lerp ends
}
Now you can instead of duration use speed and then with it you calculate the time required and change the speed to make it faster
float distance = Vector3.Distance(startPos, end);
toMove.position = Vector3.Lerp(startPos, end, elapsed / (distance/(speed * multiplier)));
2) Use Vector3.MoveTowards - This function moves a point to a end point with a given maximum step, requires three paramters, (currentPosition, end, step), u can multiply step with variable to control the speed, both work really good.
Using this is much easier in most cases
Example-
float step = speed * Time.deltaTime;//to make it framerate independent
transform.position = Vector3.MoveTowards(transform.position, end, step * multiplier);
Hope this helps. I am sorry I was unable to format my answer properly, hopefully will get better at answering. Any edits to improve the answer are welcomed :)
I recommend using iTween for smooth movement.
I modified iTween at some point for me to be able to do anything I want. like this:
public static void Rotate (Transform transform, Vector3 target, float transitionTime, Action onEnd = null, bool ignoreTimescale = false, iTween.EaseType ease = iTween.EaseType.easeInOutQuad, float delay = 0)
{
Vector3 from, to;
from = transform.localEulerAngles;
to = target;
Action <object> onUpdateAction = (rotation =>
{
transform.localEulerAngles = (Vector3) rotation;
});
Action <object> onCompleteAction = (data =>
{
if (onEnd != null)
onEnd ();
});
Hashtable hash = new Hashtable ();
hash.Add ("from", from);
hash.Add ("to", to);
hash.Add ("time", transitionTime);
hash.Add ("delay", delay);
hash.Add ("easetype", iTween.EaseType.easeInOutQuad);
hash.Add ("ignoretimescale", ignoreTimescale);
hash.Add ("onupdate", onUpdateAction);
hash.Add ("oncomplete", onCompleteAction);
iTween.ValueTo (transform.gameObject, hash);
}
That gives me full control in a variety of scenarios.
Here is the code if you want to implement it.
https://drive.google.com/open?id=1nLEEYTp-q4Kfh2n3nWQJcMXmPNtVPLLP