So I have an authoritative third person multiplayer scene working almost perfectly. I have adapted the Unity Networking authoritative third person example to get to this point but their example is broken (as many people have noted already). Here is the problem I am seeing:
When I hit W, the ThirdPersonController.js takes that input and converts it into forward motion (forward in respect to the camera).
From here the NetworkController.js is called and gets the exact same input and sends it to the remote ThirdPersonController script on the server.
The server then converts it to NORTH facing motion. It doesn’t matter what direction you are facing it always goes the same direction.
So as you would expect, if you wanted to walk up, you would face North and hit W and it would work great, but if you wanted to go South you would face South and hit W. On client side you walk South and on the server side you walk…North.
So my assumption is that the exact ThirdPersonController exists on client and server and when you give the server your input it SHOULD compute your motion EXACTLY the same as your client does. But it appears to be skipping everything in the ThirdPersonController script and taking the horizontal and vertical inputs as exactly N, S, E and W.
So if someone could please guide me and/or enlighten me as to what I am doing wrong or what appears to be happening.
Heres the code. I cut out quite a bit to shorten it but they key thing is that the inputs in the ThirdPersonController go through some smoothing and conversion that I don’t think the server is doing.
cNetworkController
var targetController : cThirdPersonController;
private var jumpButton : boolean;
private var verticalInput : float;
private var horizontalInput : float;
private var lastJumpButton : boolean;
private var lastVerticalInput : float;
private var lastHorizontalInput : float;
function Update()
{
// Sample user input
verticalInput = Input.GetAxisRaw("Vertical");
horizontalInput = Input.GetAxisRaw("Horizontal");
Debug.Log("Server Input V: " + verticalInput + " H: " + horizontalInput);
jumpButton = Input.GetButton("Jump");
var tmpVal : int = 0;
if (jumpButton) tmpVal = 1;
if (verticalInput != lastVerticalInput || horizontalInput != lastHorizontalInput || lastJumpButton != jumpButton) {
if (networkView != NetworkViewID.unassigned)
networkView.RPC("SendUserInput", RPCMode.Server, horizontalInput, verticalInput, tmpVal);
}
lastJumpButton = jumpButton;
lastVerticalInput = verticalInput;
lastHorizontalInput = horizontalInput;
}
@RPC
function SendUserInput(h : float, v : float, j : int)
{
targetController.horizontalInput = h;
targetController.verticalInput = v;
if (j==1)
targetController.jumpButton = true;
else
targetController.jumpButton = false;
}
cThirdPersonController
// The speed when walking
var walkSpeed = 3.0;
// after trotAfterSeconds of walking we trot with trotSpeed
var trotSpeed = 4.0;
// when pressing "Fire3" button (cmd) we start running
var runSpeed = 6.0;
var inAirControlAcceleration = 3.0;
// How high do we jump when pressing jump and letting go immediately
var jumpHeight = 0.5;
// We add extraJumpHeight meters on top when holding the button down longer while jumping
var extraJumpHeight = 2.5;
// The gravity for the character
var gravity = 20.0;
// The gravity in cape fly mode
var capeFlyGravity = 2.0;
var speedSmoothing = 10.0;
var rotateSpeed = 500.0;
var trotAfterSeconds = 3.0;
var canJump = true;
var canCapeFly = true;
var canWallJump = false;
private var jumpRepeatTime = 0.05;
private var wallJumpTimeout = 0.15;
private var jumpTimeout = 0.15;
private var groundedTimeout = 0.25;
// The camera doesnt start following the target immediately but waits for a split second to avoid too much waving around.
private var lockCameraTimer = 0.0;
// The current move direction in x-z
private var moveDirection = Vector3.zero;
// The current vertical speed
private var verticalSpeed = 0.0;
// The current x-z move speed
private var moveSpeed = 0.0;
// The last collision flags returned from controller.Move
private var collisionFlags : CollisionFlags;
// Are we jumping? (Initiated with jump button and not grounded yet)
private var jumping = false;
private var jumpingReachedApex = false;
// Are we moving backwards (This locks the camera to not do a 180 degree spin)
private var movingBack = false;
// Is the user pressing any keys?
public var isMoving = false;
// When did the user start walking (Used for going into trot after a while)
private var walkTimeStart = 0.0;
// Last time the jump button was clicked down
private var lastJumpButtonTime = -10.0;
// Last time we performed a jump
private var lastJumpTime = -1.0;
// Average normal of the last touched geometry
private var wallJumpContactNormal : Vector3;
private var wallJumpContactNormalHeight : float;
// the height we jumped from (Used to determine for how long to apply extra jump power after jumping.)
private var lastJumpStartHeight = 0.0;
// When did we touch the wall the first time during this jump (Used for wall jumping)
private var touchWallJumpTime = -1.0;
private var inAirVelocity = Vector3.zero;
private var lastGroundedTime = 0.0;
private var lean = 0.0;
// The vertical/horizontal input axes and jump button from user input, synchronized over network
public var verticalInput : float;
public var horizontalInput : float;
public var jumpButton : boolean;
public var getUserInput : boolean = true;
function Awake ()
{
//moveDirection = transform.TransformDirection(Vector3.forward);
}
function UpdateSmoothedMovementDirection ()
{
var cameraTransform = Camera.main.transform;
var grounded = IsGrounded();
// Forward vector relative to the camera along the x-z plane
var forward = cameraTransform.TransformDirection(Vector3.forward);
forward.y = 0;
forward = forward.normalized;
// Right vector relative to the camera
// Always orthogonal to the forward vector
var right = Vector3(forward.z, 0, -forward.x);
if (getUserInput) {
verticalInput = Input.GetAxisRaw("Vertical");
horizontalInput = Input.GetAxisRaw("Horizontal");
Debug.Log("Client Input V: " + verticalInput + " H: " + horizontalInput);
}
// Are we moving backwards or looking backwards
if (verticalInput < -0.2)
movingBack = true;
else
movingBack = false;
var wasMoving = isMoving;
isMoving = Mathf.Abs (horizontalInput) > 0.1 || Mathf.Abs (verticalInput) > 0.1;
// Target direction relative to the camera
var targetDirection = horizontalInput * right + verticalInput * forward;
// Grounded controls
if (grounded)
{
// Lock camera for short period when transitioning moving & standing still
lockCameraTimer += Time.deltaTime;
if (isMoving != wasMoving)
lockCameraTimer = 0.0;
// We store speed and direction seperately,
// so that when the character stands still we still have a valid forward direction
// moveDirection is always normalized, and we only update it if there is user input.
if (targetDirection != Vector3.zero)
{
// If we are really slow, just snap to the target direction
if (moveSpeed < walkSpeed * 0.9 && grounded)
{
moveDirection = targetDirection.normalized;
}
// Otherwise smoothly turn towards it
else
{
moveDirection = Vector3.RotateTowards(moveDirection, targetDirection, rotateSpeed * Mathf.Deg2Rad * Time.deltaTime, 1000);
moveDirection = moveDirection.normalized;
}
}
// Smooth the speed based on the current target direction
var curSmooth = speedSmoothing * Time.deltaTime;
// Choose target speed
//* We want to support analog input but make sure you cant walk faster diagonally than just forward or sideways
var targetSpeed = Mathf.Min(targetDirection.magnitude, 1.0);
// Pick speed modifier
if (Input.GetButton ("Fire3"))
{
targetSpeed *= runSpeed;
}
else if (Time.time - trotAfterSeconds > walkTimeStart)
{
targetSpeed *= trotSpeed;
}
else
{
targetSpeed *= walkSpeed;
}
moveSpeed = Mathf.Lerp(moveSpeed, targetSpeed, curSmooth);
// Reset walk time start when we slow down
if (moveSpeed < walkSpeed * 0.3)
walkTimeStart = Time.time;
}
// In air controls
else
{
// Lock camera while in air
if (jumping)
lockCameraTimer = 0.0;
if (isMoving)
inAirVelocity += targetDirection.normalized * Time.deltaTime * inAirControlAcceleration;
}
}
function Update() {
if (getUserInput) {
if (Input.GetButtonDown ("Jump"))
lastJumpButtonTime = Time.time;
}
else {
if (jumpButton)
lastJumpButtonTime = Time.time;
}
UpdateSmoothedMovementDirection();
// Apply gravity
// - extra power jump modifies gravity
// - capeFly mode modifies gravity
ApplyGravity ();
// Perform a wall jump logic
// - Make sure we are jumping against wall etc.
// - Then apply jump in the right direction)
if (canWallJump)
ApplyWallJump();
// Apply jumping logic
ApplyJumping ();
// Calculate actual motion
var movement = moveDirection * moveSpeed + Vector3 (0, verticalSpeed, 0) + inAirVelocity;
movement *= Time.deltaTime;
// Move the controller
var controller : CharacterController = GetComponent(CharacterController);
wallJumpContactNormal = Vector3.zero;
collisionFlags = controller.Move(movement);
//networkView.RPC("SendLocation", RPCMode.Server, movement);
// Set rotation to the move direction
if (IsGrounded() && moveDirection != Vector3.zero)
{
transform.rotation = Quaternion.LookRotation(moveDirection);
//networkView.RPC("SendRotation", RPCMode.Server, Quaternion.LookRotation(moveDirection));
}
else
{
var xzMove = movement;
xzMove.y = 0;
if (xzMove.magnitude > 0.001)
{
transform.rotation = Quaternion.LookRotation(xzMove);
//networkView.RPC("SendRotation", RPCMode.Server, Quaternion.LookRotation(xzMove));
}
}
// We are in jump mode but just became grounded
if (IsGrounded())
{
lastGroundedTime = Time.time;
inAirVelocity = Vector3.zero;
if (jumping)
{
jumping = false;
SendMessage("DidLand", SendMessageOptions.DontRequireReceiver);
}
}
}
@RPC
function SendLocation(v : Vector3)
{
var controller : CharacterController = GetComponent(CharacterController);
wallJumpContactNormal = Vector3.zero;
collisionFlags = controller.Move(v);
}