Need to learn how to script a character controller

Questions & Answers
1

Hello again...

right now Im trying to script a character controller for my character, I would like to make a 3rd person controller. example like in the star wars quest for R2D2.

from my research at unity site...I found 2 type of script that Is one from Lerpz tutorial and another one from Character animation, But the problem Is, It doesn't teach me about the character controller from A to Z because it's already there to be used. I understand It a little bit.

can anyone point me to the right direction on how to do a basic character controller walk and jump and understand what im doing.

Thank you.

2

Pretty decent Third Person Character Controller Tutorial here

And another basic movement tutorial with some in depth analysis of what is going on

The author explains in a little more detail what the controller script is actually doing.

What I often do is take a look at the "pre-written" scripts in the tutorials from Unity and then cut and paste any lines of code I don't understand in to Goggle and cross my fingers that someone knows what the heck it does :)

3

hello again..

okay..I'v try using the Penelope iPhone tutorial character controller and try to port the controller for Unity3d not the iPhone version and have a problem.

as for now my character can walk but cannot jump,if I press the jump button it will slide faster on the ground can someone help me..what did I do wrong

this is my code : 

         var speed = 0.0;
         var jumpSpeed = 0.0;
         var inAirMultiplier = 0.0;
         var gravity = 20.0;

         private var thisTransform : Transform;
         private var character : CharacterController;
         private var velocity : Vector3;
         private var canJump = true;

         function Start()
         {
           thisTransform = GetComponent(Transform);
       character = GetComponent(CharacterController);
         }

         function FaceMovementDirection()
         {
           var horizontalVelocity : Vector3 = character.velocity;
       horizontalVelocity.y = 0;

       if(horizontalVelocity.magnitude > 0.1)
       thisTransform.forward = horizontalVelocity.normalized;
         }

         function Update()
         {
           var movement = Vector3(Input.GetAxis("Horizontal"), 0, Input.GetAxis("Vertical"));

       movement.y = 0;
       movement.Normalize();

       if ( character.isGrounded )
       {

    if (canJump && Input.GetButton("Jump"))
    {
        // Apply the current movement to launch velocity
        velocity = character.velocity;
        velocity.y = jumpSpeed;
        canJump = true;
    }
}
else
{           
    // Apply gravity to our velocity to diminish it over time
    velocity.y += Physics.gravity.y * Time.deltaTime;

    // Adjust additional movement while in-air
    movement.x *= inAirMultiplier;
    movement.z *= inAirMultiplier;
}

movement += velocity;
movement += Physics.gravity;
movement *= Time.deltaTime;

// Actually move the character
character.Move( movement );

if ( character.isGrounded )
    // Remove any persistent velocity after landing
    velocity = Vector3.zero;

// Face the character to match with where she is moving
FaceMovementDirection();    

  }

 @script RequireComponent( CharacterController )
4

looks like you are adding in gravity twice, once multiplied by timedelta, the other not. perhaps this is keeping you on the ground?

5

These should be non zero and constant:

const public var speed = 0.0;
const public var jumpSpeed = 0.0;
const public var inAirMultiplier = 0.0;

And remove these lines:

movement.y = 0;
movement.Normalize();

movement += Physics.gravity;

Also you should move canMove to outside of the that inner if check:

if ( character.isGrounded )
{
      if (canJump && Input.GetKey(KeyCode.W))
      {
          // Apply the current movement to launch velocity
          velocity = character.velocity;
          velocity.y = jumpSpeed;
          canJump = false;
      }
      canJump = true;
}

After these changes I was able to move around and jump smoothly.