I’ve been searching for a solution to my problem for a while now, but I’m unable to find the answer.
So I’m hoping someone can help me find a solution by posting this thread.
The problem:
My Character Controller is pushing objects with a RigidBody when it should not.
But only when the objects are rotated.
So I made a testscene with two basic cubes. One has no rotation and the other is slightly rotated on the Y-axis.
The first cube cannot be moved by my controller (as it should be!) but the second one is just pushed out of the way…
When I remove the RigidBody from the (rotated)object the characterController starts behaving weird as well because it then simply starts to (erratically) move through the object. (yes it has a collider)
I don’t want to be locking/freezing axis as I want to be able to push the objects in other ways.
I just want to know why it’s behaving like this so I can find a workaround.
Hopefully someone can help me find out what is causing this issue.
Thanks in advance.
This is the script that is driving the CharacterController:
(excuse the mess… I’m still a scripting newbie)
var playerDirection : int = 1; // direction player is facing/moving
var playerVelocity : Vector3 = Vector3.zero; // direction of movement -> playerDirection
var curSavePos : Vector3; // current save position of player
private var loseLife : boolean = false; // toggle for losing life
private var pProp; // hold player properties
// Does this script currently respond to Input?
var canControl = true;
// The character will spawn at spawnPoint's position when needed. This could be changed via a script at runtime to implement, e.g. waypoints/savepoints.
var spawnPoint : Transform;
class PlatformerControllerMovement {
// The speed when walking
var walkSpeed = 3.0;
// when pressing "Fire1" button (control) we start running
var runSpeed = 10.0;
var inAirControlAcceleration = 1.0;
// The gravity for the character
var gravity = 60.0;
var maxFallSpeed = 20.0;
// How fast does the character change speeds? Higher is faster.
var speedSmoothing = 5.0;
// This controls how fast the graphics of the character "turn around" when the player turns around using the controls.
var rotationSmoothing = 10.0;
// The current move direction in x-y. This will always been (1,0,0) or (-1,0,0)
// The next line, @System.NonSerialized , tells Unity to not serialize the variable or show it in the inspector view. Very handy for organization!
@System.NonSerialized
var direction = Vector3.zero;
// The current vertical speed
@System.NonSerialized
var verticalSpeed = 0.0;
// The current movement speed. This gets smoothed by speedSmoothing.
@System.NonSerialized
var speed = 0.0;
// Is the user pressing the left or right movement keys?
@System.NonSerialized
var isMoving = false;
// The last collision flags returned from controller.Move
@System.NonSerialized
var collisionFlags : CollisionFlags;
// We will keep track of an approximation of the character's current velocity, so that we return it from GetVelocity () for our camera to use for prediction.
@System.NonSerialized
var velocity : Vector3;
// This keeps track of our current velocity while we're not grounded?
@System.NonSerialized
var inAirVelocity = Vector3.zero;
// This will keep track of how long we have we been in the air (not grounded)
@System.NonSerialized
var hangTime = 0.0;
}
var movement : PlatformerControllerMovement;
// We will contain all the jumping related variables in one helper class for clarity.
class PlatformerControllerJumping {
// Can the character jump?
var enabled = true;
// How high do we jump when pressing jump and letting go immediately
var height = 1.0;
// We add extraHeight units (meters) on top when holding the button down longer while jumping
var extraHeight = 4.1;
// This prevents inordinarily too quick jumping
// The next line, @System.NonSerialized , tells Unity to not serialize the variable or show it in the inspector view. Very handy for organization!
@System.NonSerialized
var repeatTime = 0.05;
@System.NonSerialized
var timeout = 0.15;
// Are we jumping? (Initiated with jump button and not grounded yet)
@System.NonSerialized
var jumping = false;
@System.NonSerialized
var reachedApex = false;
// Last time the jump button was clicked down
@System.NonSerialized
var lastButtonTime = -10.0;
// Last time we performed a jump
@System.NonSerialized
var lastTime = -1.0;
// the height we jumped from (Used to determine for how long to apply extra jump power after jumping.)
@System.NonSerialized
var lastStartHeight = 0.0;
}
var jump : PlatformerControllerJumping;
private var controller : CharacterController;
// Moving platform support.
private var activePlatform : Transform;
private var activeLocalPlatformPoint : Vector3;
private var activeGlobalPlatformPoint : Vector3;
private var lastPlatformVelocity : Vector3;
// This is used to keep track of special effects in UpdateEffects ();
private var areEmittersOn = false;
function Awake () {
movement.direction = transform.TransformDirection (Vector3.forward);
controller = GetComponent (CharacterController);
Spawn ();
}
function Spawn () {
// reset the character's speed
movement.verticalSpeed = 0.0;
movement.speed = 0.0;
// reset the character's position to the spawnPoint
transform.position = spawnPoint.position;
}
function OnDeath () {
Spawn ();
}
function UpdateSmoothedMovementDirection () {
var h = Input.GetAxisRaw ("Horizontal");
if (!canControl)
h = 0.0;
movement.isMoving = Mathf.Abs (h) > 0.1;
if (movement.isMoving)
movement.direction = Vector3 (h, 0, 0);
// Grounded controls
if (controller.isGrounded) {
// Smooth the speed based on the current target direction
var curSmooth = movement.speedSmoothing * Time.deltaTime;
// Choose target speed
var targetSpeed = Mathf.Min (Mathf.Abs(h), 1.0);
// Pick speed modifier
if (Input.GetButton ("Fire3") && canControl)
targetSpeed *= movement.runSpeed;
else
targetSpeed *= movement.walkSpeed;
movement.speed = Mathf.Lerp (movement.speed, targetSpeed, curSmooth);
movement.hangTime = 0.0;
}
else {
// In air controls
movement.hangTime += Time.deltaTime;
if (movement.isMoving)
movement.inAirVelocity += Vector3 (Mathf.Sign(h), 0, 0) * Time.deltaTime * movement.inAirControlAcceleration;
}
}
function FixedUpdate () {
// Make sure we are absolutely always in the 2D plane.
transform.position.z = 0;
}
function ApplyJumping () {
// Prevent jumping too fast after each other
if (jump.lastTime + jump.repeatTime > Time.time)
return;
if (controller.isGrounded) {
// Jump
// - Only when pressing the button down
// - With a timeout so you can press the button slightly before landing
if (jump.enabled && Time.time < jump.lastButtonTime + jump.timeout) {
movement.verticalSpeed = CalculateJumpVerticalSpeed (jump.height);
movement.inAirVelocity = lastPlatformVelocity;
SendMessage ("DidJump", SendMessageOptions.DontRequireReceiver);
}
}
}
function ApplyGravity () {
// Apply gravity
var jumpButton = Input.GetButton ("Jump");
if (!canControl)
jumpButton = false;
// When we reach the apex of the jump we send out a message
if (jump.jumping && !jump.reachedApex && movement.verticalSpeed <= 0.0) {
jump.reachedApex = true;
SendMessage ("DidJumpReachApex", SendMessageOptions.DontRequireReceiver);
}
// * When jumping up we don't apply gravity for some time when the user is holding the jump button
// This gives more control over jump height by pressing the button longer
var extraPowerJump = jump.jumping && movement.verticalSpeed > 0.0 && jumpButton && transform.position.y < jump.lastStartHeight + jump.extraHeight && !IsTouchingCeiling ();
if (extraPowerJump)
return;
else if (controller.isGrounded)
movement.verticalSpeed = -movement.gravity * Time.deltaTime;
else
movement.verticalSpeed -= movement.gravity * Time.deltaTime;
// Make sure we don't fall any faster than maxFallSpeed. This gives our character a terminal velocity.
movement.verticalSpeed = Mathf.Max (movement.verticalSpeed, -movement.maxFallSpeed);
}
function CalculateJumpVerticalSpeed (targetJumpHeight : float) {
// From the jump height and gravity we deduce the upwards speed
// for the character to reach at the apex.
return Mathf.Sqrt (2 * targetJumpHeight * movement.gravity);
}
function DidJump () {
jump.jumping = true;
jump.reachedApex = false;
jump.lastTime = Time.time;
jump.lastStartHeight = transform.position.y;
jump.lastButtonTime = -10;
}
function UpdateEffects () {
wereEmittersOn = areEmittersOn;
areEmittersOn = jump.jumping && movement.verticalSpeed > 0.0;
// By comparing the previous value of areEmittersOn to the new one, we will only update the particle emitters when needed
if (wereEmittersOn != areEmittersOn) {
for (var emitter in GetComponentsInChildren (ParticleEmitter)) {
emitter.emit = areEmittersOn;
}
}
}
function Update () {
pProp = GetComponent (PlayerProperties);
if (loseLife)
{
pProp.lives -= 1; // subtract a life
loseLife = false; // turn off loseLife
}
var controller : CharacterController = GetComponent(CharacterController);
playerVelocity = Vector3 (Input.GetAxis ("Horizontal"),0, 0 );
if (playerVelocity.x < 0)
{
playerDirection = 0;
}
if (playerVelocity.x > 0)
{
playerDirection = 1;
}
if (Input.GetButtonDown ("Jump") && canControl) {
jump.lastButtonTime = Time.time;
}
UpdateSmoothedMovementDirection();
// Apply gravity
// - extra power jump modifies gravity
ApplyGravity ();
// Apply jumping logic
ApplyJumping ();
// Moving platform support
if (activePlatform != null) {
var newGlobalPlatformPoint = activePlatform.TransformPoint(activeLocalPlatformPoint);
var moveDistance = (newGlobalPlatformPoint - activeGlobalPlatformPoint);
transform.position = transform.position + moveDistance;
lastPlatformVelocity = (newGlobalPlatformPoint - activeGlobalPlatformPoint) / Time.deltaTime;
} else {
lastPlatformVelocity = Vector3.zero;
}
activePlatform = null;
// Save lastPosition for velocity calculation.
lastPosition = transform.position;
// Calculate actual motion
var currentMovementOffset = movement.direction * movement.speed + Vector3 (0, movement.verticalSpeed, 0) + movement.inAirVelocity;
// We always want the movement to be framerate independent. Multiplying by Time.deltaTime does this.
currentMovementOffset *= Time.deltaTime;
// Move our character!
movement.collisionFlags = controller.Move (currentMovementOffset);
// Calculate the velocity based on the current and previous position.
// This means our velocity will only be the amount the character actually moved as a result of collisions.
movement.velocity = (transform.position - lastPosition) / Time.deltaTime;
// Moving platforms support
if (activePlatform != null) {
activeGlobalPlatformPoint = transform.position;
activeLocalPlatformPoint = activePlatform.InverseTransformPoint (transform.position);
}
// Set rotation to the move direction
if (movement.direction.sqrMagnitude > 0.01)
transform.rotation = Quaternion.Slerp (transform.rotation, Quaternion.LookRotation (movement.direction), Time.deltaTime * movement.rotationSmoothing);
// We are in jump mode but just became grounded
if (controller.isGrounded) {
movement.inAirVelocity = Vector3.zero;
if (jump.jumping) {
jump.jumping = false;
SendMessage ("DidLand", SendMessageOptions.DontRequireReceiver);
var jumpMoveDirection = movement.direction * movement.speed + movement.inAirVelocity;
if (jumpMoveDirection.sqrMagnitude > 0.01)
movement.direction = jumpMoveDirection.normalized;
}
}
// Update special effects like rocket pack particle effects
UpdateEffects ();
}
function OnControllerColliderHit (hit : ControllerColliderHit)
{
if (hit.moveDirection.y > 0.01)
return;
// Make sure we are really standing on a straight platform
// Not on the underside of one and not falling down from it either!
if (hit.moveDirection.y < -0.9 && hit.normal.y > 0.9) {
activePlatform = hit.collider.transform;
}
}
// Various helper functions below:
function GetSpeed () {
return movement.speed;
}
function GetVelocity () {
return movement.velocity;
}
function IsMoving () {
return movement.isMoving;
}
function IsJumping () {
return jump.jumping;
}
function IsTouchingCeiling () {
return (movement.collisionFlags & CollisionFlags.CollidedAbove) != 0;
}
function GetDirection () {
return movement.direction;
}
function GetHangTime() {
return movement.hangTime;
}
function Reset () {
gameObject.tag = "Player";
}
function SetControllable (controllable : boolean) {
canControl = controllable;
}
function OnTriggerEnter (other : Collider) // triggers savepoints and deaths
{
if(other.tag == "savePoint") // if tag = savePoint
{
curSavePos = transform.position; // players current position is stored in curSavePos
}
if (other.tag == "killBox") // if tag = killBox
{
// play sound
loseLife = true;
gameObject.Find("MainCamera").GetComponent(CameraScrolling).enabled = false;
gameObject.Find("cam_BG_05_water").GetComponent(CameraScrolling).enabled = false;
yield WaitForSeconds (3);
gameObject.Find("MainCamera").GetComponent(CameraScrolling).enabled = true;
gameObject.Find("cam_BG_05_water").GetComponent(CameraScrolling).enabled = true;
if (pProp.lives == 0)
return;
transform.position = curSavePos; // make player position equal to last curSavePos
}
}
// Require a character controller to be attached to the same game object
@script RequireComponent (CharacterController)
@script AddComponentMenu ("2D Platformer/Platformer Controller")