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how can i convert a transform into a float

I am trying to take the current position of something once when collided and im not sure how to
do that could anyone help me out please?
The problem i have is that the script is grabbing the playerLocation constantly i need it so it grabs it once it collides.
basically when my object colides with something it moves towards a diferent object but i dont want it to follow it constantly i want it to get the position of that 1 object only once it has collided.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class CircleMover : MonoBehaviour
{
public float speed = 10.0f;
public Transform playerLocation;
public float redirectSpeed;
public bool isCurrentlyColliding;
Vector3 playerposition;
private Rigidbody2D rb;
private Vector2 screenBounds;
// Start is called before the first frame update
void Start()
{
rb = gameObject.GetComponent<Rigidbody2D>();
rb.velocity = new Vector2(-speed, 0);
screenBounds = Camera.main.ScreenToWorldPoint(new Vector3(Screen.width, Screen.height, Camera.main.transform.position.z));
}
// Update is called once per frame
void Update()
{
//if (transform.position.x < -11.6f)
//{
// Destroy(this.gameObject);
//}
if (isCurrentlyColliding)
{
transform.position = Vector2.MoveTowards(transform.position, playerposition.transform.position, redirectSpeed * Time.deltaTime);
}
}
void OnTriggerEnter2D(Collider2D other)
{
if (other.CompareTag("CopyCat"))
{
playerposition = (playerLocation.transform.position);
isCurrentlyColliding = true;
}
}
}

The reason it grabs the playerLocation constantly because you are using isCurrentlyColliding which you are never making false and also using it in Update() method which calls every frame.
You can do two things (choose whichever goes well with your code) :
by making isCurrentlyColliding false inside Update() method like this:
void Update()
{
if (isCurrentlyColliding)
{
transform.position = Vector2.MoveTowards(transform.position, playerposition.transform.position, redirectSpeed * Time.deltaTime);
isCurrentlyColliding = false;
}
}
by removing isCurrentlyColliding and setting transform.position directly inside OnTriggerEnter2D() method like this:
void OnTriggerEnter2D(Collider2D other)
{
if (other.CompareTag("CopyCat"))
{
playerposition = (playerLocation.transform.position);
transform.position = Vector2.MoveTowards(transform.position, playerposition.transform.position, redirectSpeed * Time.deltaTime);
}
}

Collision update is one physics update late, and it caused object to cancel its velocity

I have a character, he can move and jump. I need to check if it is grounded, so I made a trigger box collider as a characters component, and I use OnTriggerEnter and OnTriggerExit to check if it is grounded, but the exit of collision with object that the character is standing on is detected one physics update late, and when it is detected, the upward velocity appears to become 0, and the character starts falling. Here is my code:
using System.Collections;
using UnityEngine;
public class Player : MonoBehaviour
{
public float speed = 4.0f;
public float jumpSpeed = 8.0f;
private bool doJump = false;
private Rigidbody rb;
bool isGrounded = false;
private float x, z;
private void Awake()
{
rb = GetComponent<Rigidbody>();
}
private void Update()
{
x = Input.GetAxis("Horizontal");
z = Input.GetAxis("Vertical");
if (Input.GetKeyDown(KeyCode.Space))
{
StartCoroutine(Jump());
}
}
void FixedUpdate()
{
if (isGrounded)
{
//this is movement
rb.velocity = (transform.right * x) * speed * Time.fixedDeltaTime + (transform.forward * z) * speed * Time.fixedDeltaTime;
}
if (isGrounded && doJump)
{
doJump = false;
rb.AddForce(0, jumpSpeed, 0, ForceMode.VelocityChange);
}
}
IEnumerator Jump()
{
//need the coroutine to make the player jump even if space pressed a bit earlier than
//the character landed
doJump = true;
yield return new WaitForSeconds(0.15f);
doJump = false;
}
private void OnTriggerStay(Collider other)
{
if (other != this.gameObject)
{
isGrounded = true;
}
}
private void OnTriggerExit(Collider other)
{
if (other != this.gameObject)
{
isGrounded = false;
}
}
}
I tried to not use coroutine for jumping but it doesn't help. What helps is deleting the movement line.

I think you are trying to implement "Pre_Update" function, I have found this solution maybe you can use it:
https://answers.unity.com/questions/614343/how-to-implement-preupdate-function.html

I am not sure but I think if you initialize your physics component in the Start function instead of the Awake function then it might work.

I am trying to make an FPS soccer game using Unity, but my script isn't working

So, I am trying to create a soccer game from scratch... all I have done until now, is setting up the ball. This is how I want it to work: When the player collides with the ball, the ball jumps forward a bit. If you start running the ball will be pushed further away.
Now, here is my script for the ball (I am using the standard FPSController as character):
using UnityEngine;
using System.Collections;
public class BallController : MonoBehaviour {
private Rigidbody rb;
public GameObject character;
public float moveSpeed = 1000;
public float shootSpeed = 2000;
bool isTurnedUp = false;
bool isTurnedDown = false;
bool done = false;
// Use this for initialization
void Start () {
rb = GetComponent<Rigidbody>();
}
// Update is called once per frame
void FixedUpdate () {
//Debug.Log(isTurnedUp + ", " + isTurnedDown);
switch (character.GetComponent<UnityStandardAssets.Characters.FirstPerson.FirstPersonController>().m_IsWalking)
{
case true:
if (isTurnedUp == false)
{
moveSpeed = moveSpeed / 1.4f;
isTurnedUp = true;
isTurnedDown = false;
}
break;
case false:
if (isTurnedDown == false)
{
moveSpeed = moveSpeed * 1.4f;
isTurnedDown = true;
isTurnedUp = false;
}
break;
}
}
void Update()
{
if (Input.GetMouseButtonDown(0))
{
if (Vector3.Distance(gameObject.transform.position, character.transform.position) <= 5)
{
float distance = Vector3.Distance(gameObject.transform.position, character.transform.position);
}
}
}
void OnCollisionEnter(Collision collision) {
FixedUpdate();
if (done == false) {
rb.AddForce(Vector3.forward * moveSpeed, ForceMode.Impulse);
done = true;
}
else {
done = false;
}
}
//other
void OnDrawGizmosSelected()
{
Gizmos.color = Color.yellow;
Gizmos.DrawWireSphere(transform.position, 2);
}
}
My problem is that the ball doesn't behave how I want it... it feels like it's about luck if the ball will jump forward when I touch it. Can someone tell me what I did wrong?

Inside of OnCollisionEnter you need to ensure the ball can only be kicked by the player. You can check whether or not the player has collided with the ball by checking the name or tag of the collision. The following example uses the name and assumes your player GameObject is named "Player".
Remove the done flag since this will only allow the player to kick the ball every other time they collide, and remove the FixedUpdate() call since FixedUpdate() is already called automatically every physics calculation.
Finally, if you want to kick the ball away from the player, then you need to calculate the direction away from the collision point instead of using Vector3.forward as seen below.
void OnCollisionEnter(Collision collision)
{
if(collision.gameObject.name == "Player")
{
Vector3 direction = (collision.transform.position - transform.position).normalized;
rb.AddForce(-direction * moveSpeed, ForceMode.Impulse);
}
}

Unity 5: Rigidbody 2d sticking to ceiling while velocity is moving upwards

I am making a 2d game. My problem is that while playing, if the player holds jump and is under a BoxCollider2D, the player will not fall until they release jump.
My player GameObject consists of a sprite renderer, a dynamic rigidbody2d with gravity on and a boxcollider2d.
Here are my movement scripts:
1:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class JumpScript : MonoBehaviour {
[Range(1, 10)]
public float jumpVelocity;
[Range(0,10)]
public float speed;
private bool jumpQueue = false;
private bool boolin=false;
void Update()
{
//Friggin fall, loser
//Jumping
///*
if (Input.GetButton("Jump")&& GetComponent<Rigidbody2D> ().velocity.y==0)
{
GetComponent<Rigidbody2D>().velocity = Vector2.up * jumpVelocity;
}
//*/
//jumpQueue?
/*
if(Input.GetButtonDown("Jump"))
{
jumpQueue = true;
}*/
//Right Movement
if (Input.GetKey(KeyCode.D))
{
GetComponent<Rigidbody2D>().velocity = new Vector2(1*speed, GetComponent<Rigidbody2D>().velocity.y);
boolin = true;
}
if(Input.GetKeyUp(KeyCode.D))
{
GetComponent<Rigidbody2D>().velocity = new Vector2(0, GetComponent<Rigidbody2D>().velocity.y);
boolin = false;
}
//Left Movement
if (Input.GetKey(KeyCode.A))
{
GetComponent<Rigidbody2D>().velocity = new Vector2(-1*speed, GetComponent<Rigidbody2D>().velocity.y);
boolin = true;
}
if (Input.GetKeyUp(KeyCode.A))
{
GetComponent<Rigidbody2D>().velocity = new Vector2(0, GetComponent<Rigidbody2D>().velocity.y);
boolin = false;
}
//No movement?
if (Input.GetKey(KeyCode.D) && Input.GetKey(KeyCode.A))
{
GetComponent<Rigidbody2D>().velocity = new Vector2(0, GetComponent<Rigidbody2D>().velocity.y);
boolin = false;
}
//Time to handle animation, boios.
Rigidbody2D rb = GetComponent<Rigidbody2D>();
bool schwomp = false;
bool schwift = false;
if(rb.velocity.y>0)
{
schwomp = true;
}
if(rb.velocity.y<0)
{
schwift = true;
}
Animator anim = GetComponent<Animator>();
if (boolin)
{
anim.SetInteger("Boolin", 1);
/*if (!anim.GetBool("expand"))
{
anim.SetBool("expand", true);
anim.Play("running");
}*/
}
else
{
anim.SetInteger("Boolin", 0);
/*
if(anim.GetBool("expand"))
{
anim.SetBool("expand", false);
anim.Play("Idle");
}*/
}
if(schwomp)
{
//anim.SetInteger("Boolin", 2);
}
if(schwift)
{
//anim.SetInteger("Boolin", 3);
}
}
}
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class BetterJumper : MonoBehaviour {
public float fallMultiplier = 2.5f;
public float lowJumpMultiplier = 2f;
Rigidbody2D rb;
void Awake()
{
rb = GetComponent<Rigidbody2D>();
}
void Update()
{
if(rb.velocity.y<0)
{
rb.velocity += Vector2.up*Physics2D.gravity.y*(fallMultiplier-1)*Time.deltaTime;
}
else if(rb.velocity.y>0&&!Input.GetButton("Jump"))
{
rb.velocity += Vector2.up * Physics2D.gravity.y * (lowJumpMultiplier - 1) * Time.deltaTime;
}
}
}
Thank you so much in advance!

You're using Input.GetKey() which will poll the key every frame. This means more and more velocity is added the longer you hold jump. You've effectively built a jetpack rather than a jump force.
You should use Input.GetKeyDown() which will only fire once when a key is pressed down, then has to be released and pressed again in order to re-trigger. You then need to apply a single sufficiently strong vertical force using RigidBody.AddForce() to make the character jump, rather than adding continuously to the velocity.
Additionally, you should really be caching the result of your GetComponent<Rigidbody2D>() call when the script either wakes up or starts so that you're not calling it continuously; Each one of those calls takes processing time. Also, you should be using FixedUpdate() for physics.
public class ExampleClass : MonoBehaviour {
public float thrust;
public Rigidbody rb; // make the rigidbody variable available anywhere in the class
void Start() {
// cache the rigidbody component to the variable once on start
rb = GetComponent<Rigidbody>();
}
void FixedUpdate() {
// use the variable reference from now on rather than making GetComponent calls
rb.AddForce(transform.up * thrust);
}
}

Soviut's answer explains it quite nicely, but there's more that you need to know. You're directly manipulating the velocity, which overrides the effect of any forces, including gravity(despite the fact you're applying it manually). See the documentation.
As demonstrated in Soviut's answer you should be applying forces and impulses, letting the physics engine determine the velocity. The only time you should set velocity directly is when you're building a simulation that intentionally has unrealistic physics(i.e. retro platformers). Even in that case, bear in mind that doing so creates a lot more work, because you'll need to factor in every little thing that creates movement. This means you're essentially re-inventing the physics engine.

Due to collision checking, my Unity character is occasionally falling through the floor. What can I do to fix this?

I have a basic 2D-oriented Character Controller - custom, that I'm writing for a 2.5D game with 3D models (Therefore I can't use the Unity2D physics and collision volumes).
My controller mostly works, however I'm hitting a strange little issue where every so often - apparently at a certain speed - it skips the collision check and falls through the floor or platform. Can someone spot what I'm doing wrong?
using UnityEngine;
using System.Collections;
public class PlayerController : MonoBehaviour
{
public float PlayerSpeed;
public float JumpPower;
public float _Gravity = 9.89f;
public Vector3 Flip = Vector3.zero;
private Vector3 MoveDirection = Vector3.zero;
private bool FacingLeft = false;
private bool FacingRear = false;
public bool GroundContact = false;
private Rigidbody RigidBody;
private void Awake()
{
RigidBody = GetComponent<Rigidbody>();
}
private void Update()
{
DetectionRays();
MoveDirection.x = PlayerSpeed * Input.GetAxis("Horizontal");
if (GroundContact) {
MoveDirection.y = 0;
if (Input.GetButtonDown("Jump")) {
MoveDirection.y = JumpPower;
}
} else {
MoveDirection.y -= _Gravity * Time.deltaTime;
}
Vector3 movementVector = new Vector3(MoveDirection.x * Time.deltaTime, MoveDirection.y * Time.deltaTime, 0);
transform.Translate(movementVector);
}
private void DetectionRays()
{
DetectDown();
}
private void OnCollisionEnter(Collision Collide)
{
if (Collide.transform.tag == "Ground")
{
GroundContact = true;
}
}
private void DetectDown()
{
RaycastHit Obsticle;
Vector3 RayDownPosit = transform.position;
RayDownPosit.y += 0.8f;
Ray RayDown = new Ray(transform.position, Vector3.down);
Debug.DrawRay(RayDownPosit, Vector3.down, Color.red, 0.05f, false);
GroundContact = false;
if (Physics.Raycast(RayDown, out Obsticle, 0.05f))
{
if (Obsticle.transform.tag == "Ground")
{
GroundContact = true;
}
}
}
}

First, you can attach Box Collider 2D and Rigidbody 2D to 3D models. Try it.
Are you sure you need a custom character controller? CharacterController.Move (or SimpleMove) does collision detection for you.
http://docs.unity3d.com/ScriptReference/CharacterController.Move.html
Alternatively, since you are using Rigidbodies, you should consider using ApplyForce or adding velocity.