so for the past few days I've been working on a character controller in Unity3D using mecanim. It's not based off of my own code, but off of a tutorial I found online, of course that tutorial was meant for Unity 4, so I am running in to small problems here and there, but nothing I couldn't fix up until now.
So the basic problem is that my character seems to (without reason) stop all his momentum and slowly turns around when I try to make a hard 180 degrees turn, afterwards he continues to run like normal again, but I don't see why he would suddenly stop turning.
Here is my character logic script:
using UnityEngine;
using System.Collections;
public class characterLogic : MonoBehaviour {
[SerializeField]
private Animator animator;
[SerializeField]
private FollowCamera gamecam;
[SerializeField]
private float directionSpeed = 1.5f;
[SerializeField]
private float directionDampTime = 0.25f;
[SerializeField]
private float rotationDegreePerSecond = 120f;
[SerializeField]
private float speedDampTime = 0.05f;
private float speed = 0.0f;
private float direction = 0.0f;
private float charAngle = 0f;
private float horizontal = 0.0f;
private float vertical = 0.0f;
private AnimatorStateInfo stateInfo;
private AnimatorTransitionInfo transInfo;
private int m_LocomotionId = 0;
private int m_LocomotionPivotLId = 0;
private int m_LocomotionPivotRId = 0;
private int m_LocomotionPivotLTransId = 0;
private int m_LocomotionPivotRTransId = 0;
public Animator Animator
{
get
{
return this.animator;
}
}
public float Speed
{
get
{
return this.speed;
}
}
public float LocomotionThreshold { get { return 0.2f; } }
// Use this for initialization
void Start () {
animator = GetComponent<Animator>();
if(animator.layerCount >= 2)
{
animator.SetLayerWeight(1, 1);
}
m_LocomotionId = Animator.StringToHash("Base Layer.Locomotion");
m_LocomotionPivotLId = Animator.StringToHash("Base Layer.LocomotionPivotL");
m_LocomotionPivotRId = Animator.StringToHash("Base Layer.LocomotionPivotR");
m_LocomotionPivotLTransId = Animator.StringToHash("Base Layer.Locomotion -> Base Layer.LocomotionPivotL");
m_LocomotionPivotRTransId = Animator.StringToHash("Base Layer.Locomotion -> Base Layer.LocomotionPivotR");
}
public void keysToWorldSpace (Transform root, Transform camera, ref float directionOut, ref float speedOut, ref float angleOut, bool isPivoting){
Vector3 rootDirection = root.forward;
Vector3 keyDirection = new Vector3 (horizontal, 0, vertical);
speedOut = keyDirection.sqrMagnitude;
//get camera rotation
Vector3 cameraDirection = camera.forward;
cameraDirection.y = 0.0f;
Quaternion referentialShift = Quaternion.FromToRotation (Vector3.forward, cameraDirection);
//convert key input to world space coordinates
Vector3 moveDirection = referentialShift * keyDirection;
Vector3 axisSign = Vector3.Cross (moveDirection, rootDirection);
Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), moveDirection, Color.green);
Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), axisSign, Color.red);
Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), rootDirection, Color.magenta);
Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), keyDirection, Color.blue);
float angleRootToMove = Vector3.Angle(rootDirection, moveDirection) * (axisSign.y >= 0 ? -1f : 1f);
if (!isPivoting)
{
angleOut = angleRootToMove;
}
angleRootToMove /= 180f;
directionOut = angleRootToMove * directionSpeed;
}
// Update is called once per frame
void Update () {
if (animator) {
stateInfo = animator.GetCurrentAnimatorStateInfo(0);
transInfo = animator.GetAnimatorTransitionInfo(0);
horizontal = Input.GetAxis("Horizontal");
vertical = Input.GetAxis("Vertical");
charAngle = 0f;
direction = 0f;
keysToWorldSpace (this.transform, gamecam.transform, ref direction, ref speed, ref charAngle, isInPivot());
animator.SetFloat ("Speed", speed);
animator.SetFloat ("Direction", direction, directionDampTime, Time.deltaTime);
if(speed > LocomotionThreshold){
if(!isInPivot()){
Animator.SetFloat("Angle", charAngle);
}
}
if(speed < LocomotionThreshold && Mathf.Abs(horizontal) < 0.05f){
animator.SetFloat("Direction", 0f);
animator.SetFloat("Speed", speed, speedDampTime, Time.deltaTime);
}
Debug.Log(Speed);
Debug.Log(charAngle);
}
}
void FixedUpdate() {
if (IsInLocomotion () && ((direction >= 0 && horizontal >= 0) || (direction < 0 && horizontal < 0))) {
Vector3 rotationAmount = Vector3.Lerp(Vector3.zero, new Vector3(0f, rotationDegreePerSecond * (horizontal < 0f ? -1f : 1f), 0f), Mathf.Abs(horizontal));
Quaternion deltaRotation = Quaternion.Euler(rotationAmount * Time.deltaTime);
this.transform.rotation = (this.transform.rotation * deltaRotation);
}
}
public bool isInPivot(){
return stateInfo.fullPathHash == m_LocomotionPivotLId ||
stateInfo.fullPathHash == m_LocomotionPivotRId ||
transInfo.nameHash == m_LocomotionPivotLTransId ||
transInfo.nameHash == m_LocomotionPivotRTransId;
}
public bool IsInLocomotion(){
return stateInfo.fullPathHash == m_LocomotionId;
}
}
I believe it either has to do something with this script or with the transitions within mecanim. I also ported the finished product (found here: https://github.com/jm991/UnityThirdPersonTutorial ) of the tutorial over to Unity 5 and didn't experience the same problem there, I am not entirely sure what the difference is which gives me this problem, but if any of you know or find out, please let me know.
I found the problem myself already!
Here is the new code in case anyone is interested in the future:
using UnityEngine;
using System.Collections;
public class characterLogic : MonoBehaviour {
[SerializeField]
private Animator animator;
[SerializeField]
private FollowCamera gamecam;
[SerializeField]
private float directionSpeed = 1.5f;
[SerializeField]
private float directionDampTime = 0.25f;
[SerializeField]
private float rotationDegreePerSecond = 120f;
[SerializeField]
private float speedDampTime = 0.05f;
[SerializeField]
private float fovDampTime = 3f;
private float horizontal = 0.0f;
private float vertical = 0.0f;
private float speed = 0.0f;
private float direction = 0.0f;
private float charAngle = 0f;
private const float SPRINT_SPEED = 2.0f;
private const float SPRINT_FOV = 75.0f;
private const float NORMAL_FOV = 60.0f;
private const float WALK_SPEED = 0.1f;
private AnimatorStateInfo stateInfo;
private AnimatorTransitionInfo transInfo;
private int m_LocomotionId = 0;
private int m_LocomotionPivotLId = 0;
private int m_LocomotionPivotRId = 0;
private int m_LocomotionPivotLTransId = 0;
private int m_LocomotionPivotRTransId = 0;
public Animator Animator
{
get
{
return this.animator;
}
}
public float Speed
{
get
{
return this.speed;
}
}
public float LocomotionThreshold { get { return 0.2f; } }
// Use this for initialization
void Start () {
animator = GetComponent<Animator>();
if(animator.layerCount >= 2)
{
animator.SetLayerWeight(1, 1);
}
m_LocomotionId = Animator.StringToHash("Base Layer.Locomotion");
m_LocomotionPivotLId = Animator.StringToHash("Base Layer.LocomotionPivotL");
m_LocomotionPivotRId = Animator.StringToHash("Base Layer.LocomotionPivotR");
m_LocomotionPivotLTransId = Animator.StringToHash("Base Layer.Locomotion -> Base Layer.LocomotionPivotL");
m_LocomotionPivotRTransId = Animator.StringToHash("Base Layer.Locomotion -> Base Layer.LocomotionPivotR");
}
public void keysToWorldSpace (Transform root, Transform camera, ref float directionOut, ref float speedOut, ref float angleOut, bool isPivoting){
Vector3 rootDirection = root.forward;
Vector3 keyDirection = new Vector3 (horizontal, 0, vertical);
speedOut = keyDirection.sqrMagnitude;
//get camera rotation
Vector3 cameraDirection = camera.forward;
cameraDirection.y = 0.0f;
Quaternion referentialShift = Quaternion.FromToRotation(Vector3.forward, Vector3.Normalize(cameraDirection));
//convert key input to world space coordinates
Vector3 moveDirection = referentialShift * keyDirection;
Vector3 axisSign = Vector3.Cross (moveDirection, rootDirection);
Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), moveDirection, Color.green);
Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), axisSign, Color.red);
Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), rootDirection, Color.magenta);
Debug.DrawRay (new Vector3(root.position.x, root.position.y + 2f, root.position.z), keyDirection, Color.blue);
float angleRootToMove = Vector3.Angle(rootDirection, moveDirection) * (axisSign.y >= 0 ? -1f : 1f);
if (!isPivoting)
{
angleOut = angleRootToMove;
}
angleRootToMove /= 180f;
directionOut = angleRootToMove * directionSpeed;
}
// Update is called once per frame
void Update () {
if (animator) {
stateInfo = animator.GetCurrentAnimatorStateInfo(0);
transInfo = animator.GetAnimatorTransitionInfo(0);
horizontal = Input.GetAxis("Horizontal");
vertical = Input.GetAxis("Vertical");
charAngle = 0f;
direction = 0f;
float charSpeed = 0f;
keysToWorldSpace (this.transform, gamecam.transform, ref direction, ref charSpeed, ref charAngle, isInPivot());
if (Input.GetButton("Sprint"))
{
speed = Mathf.Lerp(speed, SPRINT_SPEED, Time.deltaTime);
gamecam.GetComponent<Camera>().fieldOfView = Mathf.Lerp(gamecam.GetComponent<Camera>().fieldOfView, SPRINT_FOV, fovDampTime * Time.deltaTime);
}
else
{
speed = charSpeed;
gamecam.GetComponent<Camera>().fieldOfView = Mathf.Lerp(gamecam.GetComponent<Camera>().fieldOfView, NORMAL_FOV, fovDampTime * Time.deltaTime);
}
if (Input.GetButton("Walk"))
{
speed = Mathf.Lerp(speed, WALK_SPEED, Time.deltaTime);
}
else
{
speed = charSpeed;
}
animator.SetFloat("Speed", speed, speedDampTime, Time.deltaTime);
animator.SetFloat("Direction", direction, directionDampTime, Time.deltaTime);
if(speed > LocomotionThreshold){
if(!isInPivot()){
Animator.SetFloat("Angle", charAngle);
}
}
if(speed < LocomotionThreshold && Mathf.Abs(horizontal) < 0.05f){
animator.SetFloat("Direction", 0f);
animator.SetFloat("Speed", speed, speedDampTime, Time.deltaTime);
}
Debug.Log(Speed);
Debug.Log(charAngle);
}
}
void FixedUpdate() {
if (IsInLocomotion () && ((direction >= 0 && horizontal >= 0) || (direction < 0 && horizontal < 0))) {
Vector3 rotationAmount = Vector3.Lerp(Vector3.zero, new Vector3(0f, rotationDegreePerSecond * (horizontal < 0f ? -1f : 1f), 0f), Mathf.Abs(horizontal));
Quaternion deltaRotation = Quaternion.Euler(rotationAmount * Time.deltaTime);
this.transform.rotation = (this.transform.rotation * deltaRotation);
}
}
public bool isInPivot(){
return stateInfo.fullPathHash == m_LocomotionPivotLId ||
stateInfo.fullPathHash == m_LocomotionPivotRId ||
transInfo.nameHash == m_LocomotionPivotLTransId ||
transInfo.nameHash == m_LocomotionPivotRTransId;
}
public bool IsInLocomotion(){
return stateInfo.fullPathHash == m_LocomotionId;
}
}
It turned out that the guy who made the original code was using a dampTime on his speed due to which he wouldn't instantly stand still if he'd let go off a button. It's something he hadn't explained in his tutorial yet, so I must have missed it. Anyways I hope this might help anyone in the future with a similar problem.