Footsteps Script for Running and Walking

You should be able to do even better if using Pro with Mecanim, by simply creating a curve in your animation and naming it i.e. FootstepsRunning with a range on 0 to 1. Over the life of the curve/animation, set keyframes/curve values of 1 to represent footfalls and 0 for none (linear handles).

In the Animator Controller, create a float variable of the same name, and you can detect when to play your footfall audio with:

 if (animator.GetFloat("FootstepsRunning") == 1)
    PlayMyAudio();

Basically, the float comes from the value of the curve over time, so when it's at 1.0 it's a footstep...you can fine-tune this in the curve editor till it's spot on.

(I can't test this atm, but it should work in theory as long as it doesn't miss the peaks in the curve).

We've been promised Animator Events in future Mecanim updates, so doing this sort of thing should be even easier soon.

Hi,

I've updated with a jump sound effect and a landing one.

Unfortunately, the landing sound effect only plays if you are holding a movement key down - this is because OnControllerColliderHit() only gets called if there is a collision during a Move call.

The alternative - using OnCollisionEnter() doesn't seem to work for a character controller (like the 1st person controller prefab that I am using). Any thoughts on why that is would be appreciated.

 #pragma strict
 @script RequireComponent( AudioSource )
 
 // Note: Only objects tagged with "Ground" (and have colliders) will trigger the landing sound effect.
  
 var walk : AudioClip;
 var run : AudioClip;
 var jump : AudioClip; // [Edit: New sound for jumping]
 var land : AudioClip; // [Edit: New sound for landing]
  
 var walkAudioSpeed : float = 0.4;
 var runAudioSpeed : float = 0.2;
  
 private var walkAudioTimer : float = 0.0;
 private var runAudioTimer : float = 0.0;
  
 private var isWalking : boolean = false; // Made these private  
 private var isRunning : boolean = false; // ^^
  
 var walkSpeed: float = 7; // regular speed
 var runSpeed: float = 20; // run speed
  
 private var chCtrl: CharacterController;
 private var chMotor: CharacterMotor;
 
 private var jumping : boolean = false; // [Edit: new private bool to handle jumping]
  
 function Start()
 {
     chCtrl = GetComponent(CharacterController);
     chMotor = GetComponent(CharacterMotor);
 }
  
 function Update()
 {
     SetSpeed();
  
     if ( chCtrl.isGrounded )
     {
         PlayFootsteps();
         PlayJump();        
     }
     else
     {
         walkAudioTimer = 0.0;
         runAudioTimer = 0.0;
     }
 }
  
 function SetSpeed()
 {
     var speed = walkSpeed;
  
     if ( chCtrl.isGrounded && Input.GetKey("left shift") || Input.GetKey("right shift") )
     {
         speed = runSpeed;
     }
  
     chMotor.movement.maxForwardSpeed = speed;
 }
 
 // [EDIT: New function PlayJump() for jumping and landing sound (being called from Update)]
 
 function PlayJump()
 {
     if ( chCtrl.isGrounded && Input.GetButtonDown("Jump") )
     {
         audio.PlayOneShot(jump, 0.8f);
         jumping = true; // tell the script that the player has jumped
     }    
 }
 
 // Landing only triggers if a move control is being pressed which is not ideal.
 // This is a due to the way OnControllerColliderHit() works (see docs)
 // unfortunately, the simple OnCollisionEnter() is not working for me either. 
 
 function OnControllerColliderHit (hit: ControllerColliderHit)
 {
       if (hit.gameObject.tag == "Ground")
       {
           if (jumping)
           {          
               audio.PlayOneShot( land , 0.8f );              
           }
       }     
     jumping = false;    // reset jumping variable     
 }
   
 // END of DOM.STB's edits //
  
 function PlayFootsteps() 
 {
     if ( Input.GetAxis( "Horizontal" ) || Input.GetAxis( "Vertical" ) )
     {
     
        if ( Input.GetKey( "left shift" ) || Input.GetKey( "right shift" ) )
        {
          // Running
          isWalking = false;
          isRunning = true;
        }
        else
        {
          // Walking
          isWalking = true;
          isRunning = false;
        }
     }
     else
     {
        // Stopped
        isWalking = false;
        isRunning = false;
     }
  
     // Play Audio
     if ( isWalking )
     {
        if ( audio.clip != walk )
        {
          audio.Stop();
          audio.clip = walk;
        }
  
        //if ( !audio.isPlaying )
        if ( walkAudioTimer > walkAudioSpeed )
        {
          audio.Stop();
          audio.Play();
          walkAudioTimer = 0.0;
        }
     }
     else if ( isRunning )
     {
        if ( audio.clip != run )
        {
          audio.Stop();
          audio.clip = run;
        }
  
        //if ( !audio.isPlaying )
        if ( runAudioTimer > runAudioSpeed )
        {
          audio.Stop();
          audio.Play();
          runAudioTimer = 0.0;
        }
     }
     else
     {
        audio.Stop();
     }
  
     // increment timers
     walkAudioTimer += Time.deltaTime;
     runAudioTimer += Time.deltaTime;    
 }