Minor Addition to Jumping using CharaterController

Questions & Answers
1

I’m using a model based on the Character Controller asset. I know that the character can jump using space bar but I want to modify the character so that it will jump upon colliding with an object. How can i change the Character Controller scripts to implement this action?

2

Modifying the First Person Controller scripts isn’t an easy task, and may screw things up. It would be better to add a new script to the character, like below:

var motor: CharacterMotor; // reference to the FPC script

function Start () {
    motor = GetComponent(CharacterMotor);
}

private var jumpTime: float = 0;

function OnControllerColliderHit(hit: ControllerColliderHit){
    if (hit.normal.y < 0.707){ // if collision normal < 45 degrees...
        // check the collision direction:
        var dir = hit.point - transform.position;
        dir.y = 0; // keep only the horizontal direction
        // if collision in front side...
        if (Vector3.Dot(dir, transform.forward) > 0){
            jumpTime = Time.time + 0.1; // send a 0.1s jump command
        }
    }
}

function LateUpdate () {
    // send jump command during the time specified:
    motor.inputJump |= jumpTime > Time.time;
}

The CharacterMotor script jumps when its variable inputJump gets true, what happens at LateUpdate to avoid problems with script execution order

EDITED:

The code above works for the First Person Controller. If you’re using the Third Person Controller prefab, forget about an external script - the only solution is to edit its control script. But you’re a lucky guy, the change is simple: find the function OnControllerColliderHit in the script ThirdPersonController.js (in the folder Standard Assets/Character Controllers/Sources/Scripts) and replace it with the following code:

function OnControllerColliderHit(hit: ControllerColliderHit){
  if (hit.normal.y < 0.707){
    var dir = hit.point - transform.position;
    dir.y = 0;
    if (Vector3.Dot(dir, transform.forward) > 0){
      lastJumpButtonTime = Time.time; // this causes a jump
    }
  }
}