I am trying to make my game respond to a command using my keyboard on my MAC. Here is what I have and it is giving me problems. I have the gravity down, but my character will not move if I press a button on my keyboard to command it.

Questions & Answers
1

using UnityEngine;
using System.Collections;

public class NewBehaviourScript : MonoBehaviour {

Vector3 velocity = Vector3.zero;
public Vector3 gravity;
public Vector3 flapVelocity;
public float maxSpeed = 5f;
public float forwardSpeed = 1f;

bool didFlap = false;

// Use this for initialization
void Start () {

}

// Dographic and input updates here
void update() {
	if(Input.GetKeyDown(KeyCode.Space) || Input.GetMouseButtonDown(0) ) {  
		didFlap = true;
	}
}

// Do physics engine update here
void FixedUpdate () {
	velocity.x = forwardSpeed;
	velocity += gravity * Time.deltaTime;

	if (didFlap == true) {
		didFlap = false;
		if (velocity.y < 0)
			velocity.y = 0;
		
		velocity += flapVelocity;
	}

	velocity = Vector3.ClampMagnitude(velocity, maxSpeed);

	transform.position += velocity * Time.deltaTime;

	float angle = 0;
	if (velocity.y < 0) {
		angle = Mathf.Lerp (0, -90, -velocity.y / maxSpeed);
	}

	transform.rotation = Quaternion.Euler (0, 0, angle);
}

}

2

You Update method should start with capital ‘U’.