My code for character animation

var runSpeedScale = 1.0;
var walkSpeedScale = 1.0;

function Start ()
{
    // By default loop all animations
    GetComponent.<Animation>().wrapMode = WrapMode.Loop;

    GetComponent.animation["run"].layer = -1;
    GetComponent.animation["walk"].layer = 1;
    GetComponent.Animation["idle"].layer = 0;
    GetComponent.animation.SyncLayer(-1);

    GetComponent.animation["ledgefall"].layer = 9;
    GetComponent.animation["ledgefall"].wrapMode = WrapMode.Loop;


    // The jump animation is clamped and overrides all others
    GetComponent.animation["jump"].layer = 10;
    GetComponent.animation["jump"].wrapMode = WrapMode.ClampForever;

    GetComponent.animation["jumpfall"].layer = 10;
    GetComponent.animation["jumpfall"].wrapMode = WrapMode.ClampForever;

    // This is the jet-pack controlled descent animation.
    GetComponent.animation["jetpackjump"].layer = 10;
    GetComponent.animation["jetpackjump"].wrapMode = WrapMode.ClampForever;

    GetComponent.animation["jumpland"].layer = 10;
    GetComponent.animation["jumpland"].wrapMode = WrapMode.Once;

    GetComponent.animation["walljump"].layer = 11;
    GetComponent.animation["walljump"].wrapMode = WrapMode.Once;

    // we actually use this as a "got hit" animation
    GetComponent.animation["buttstomp"].speed = 0.15;
    GetComponent.animation["buttstomp"].layer = 20;
    GetComponent.animation["buttstomp"].wrapMode = WrapMode.Once;
    var punch = GetComponent.animation("punch");
    punch.wrapMode = WrapMode.Once;

    // We are in full control here - don't let any other animations play when we start
    GetComponent.animation.Stop();
    GetComponent.animation.Play("idle");
}

function Update ()
{
    var playerController : ThirdPersonController = GetComponent(ThirdPersonController);
    var currentSpeed = playerController.GetSpeed();

    // Fade in run
    if (currentSpeed > playerController.walkSpeed)
    {
        GetComponent.animation.CrossFade("run");
        // We fade out jumpland quick otherwise we get sliding feet
        GetComponent.animation.Blend("jumpland", 0);
    }
    // Fade in walk
    else if (currentSpeed > 0.1)
    {
        GetComponent.animation.CrossFade("walk");
        // We fade out jumpland realy quick otherwise we get sliding feet
        GetComponent.animation.Blend("jumpland", 0);
    }
    // Fade out walk and run
    else
    {
        GetComponent.animation.Blend("walk", 0.0, 0.3);
        GetComponent.animation.Blend("run", 0.0, 0.3);
        GetComponent.animation.Blend("run", 0.0, 0.3);
    }

    GetComponent.animation("run").normalizedSpeed = runSpeedScale;
    GetComponent.animation("walk").normalizedSpeed = walkSpeedScale;

    if (playerController.IsJumping ())
    {
        if (playerController.IsControlledDescent())
        {
            GetComponent.animation.CrossFade ("jetpackjump", 0.2);
        }
        else if (playerController.HasJumpReachedApex ())
        {
            GetComponent.animation.CrossFade ("jumpfall", 0.2);
        }
        else
        {
            GetComponent.animation.CrossFade ("jump", 0.2);
        }
    }
    // We fell down somewhere
    else if (!playerController.IsGroundedWithTimeout())
    {
        GetComponent.animation.CrossFade ("ledgefall", 0.2);
    }
    // We are not falling down anymore
    else
    {
        GetComponent.animation.Blend ("ledgefall", 0.0, 0.2);
    }
}

function DidLand () {
    GetComponent.animation.Play("jumpland");
}

function DidButtStomp () {
    GetComponent.animation.CrossFade("buttstomp", 0.1);
    GetComponent.animation.CrossFadeQueued("jumpland", 0.2);
}

function Slam () {
    GetComponent.animation.CrossFade("buttstomp", 0.2);
    var playerController : ThirdPersonController = GetComponent(ThirdPersonController);
    while(!playerController.IsGrounded())
    {
        yield;
    }
    GetComponent.animation.Blend("buttstomp", 0, 0);
}


function DidWallJump ()
{
    // Wall jump animation is played without fade.
    // We are turning the character controller 180 degrees around when doing a wall jump so the animation accounts for that.
    // But we really have to make sure that the animation is in full control so
    // that we don't do weird blends between 180 degree apart rotations
    GetComponent.animation.Play ("walljump");
}

@script AddComponentMenu ("Third Person Player/Third Person Player Animation")