gistfile1.cs

using UnityEngine;
using System.Collections;

public class HumanPlayer : MonoBehaviour {
  
	// Where the actor wants to be
	Vector3 finalTargetPosition;
	// Where the actor needs to go first in order to get to the final target
	Vector3 targetPosition;
	
	float walkForceMag;
	
	float maxVel = 5.0f;
	
	public float cameraHeight = 5.0f;
	
	// Use this for initialization
	void Start () {
		targetPosition = transform.position;
		walkForceMag = constantForce.force.magnitude;
	}
	
	// Update is called once per frame
	void FixedUpdate () {
		
		if(Input.GetMouseButton(0)) {
			float dist = 5.0f;
			Ray r = Camera.mainCamera.ScreenPointToRay(Input.mousePosition);
			Vector3 point = r.origin + (r.direction * dist);
			
			RaycastHit hitInfo;
			if(Physics.Raycast(Camera.mainCamera.transform.position, r.direction, out hitInfo)) {
				targetPosition =  hitInfo.point;
			}
			
		}
		
		// Rotate to look in the direction we're going
		Vector3 tmpRot = transform.localRotation.eulerAngles;
		transform.LookAt(targetPosition);
		
		// Don't rotate along any axis other than y for this
		transform.localEulerAngles = new Vector3(tmpRot.x, transform.localEulerAngles.y, tmpRot.z);
		
		// Move attached force to be in the direction we're facing
		Vector3 moveDir = targetPosition - transform.position;
		if(moveDir.magnitude>1.0f) {
			// Make this x/z only, no y movement, derp.
			moveDir.y = 0;
			moveDir.Normalize();
			constantForce.force = walkForceMag*moveDir;
		}
		else {
			constantForce.force = Vector3.zero;
			rigidbody.velocity *= 0.9f;
		}
		
		float vmag = rigidbody.velocity.magnitude;
		if(vmag>maxVel) {
			// Limit the velocity magnitude to maxVel
			float ratio = maxVel/vmag;
			
			// Multiply by the ratio to cause magnitude to be equal to maxVel
			rigidbody.velocity *= ratio;
		}
		
		
		Camera.main.transform.position = new Vector3(transform.position.x, transform.position.y + cameraHeight, transform.position.z);
		
	}
	
	public void Respawn(Vector3 p) {
		rigidbody.velocity = Vector3.zero;
		transform.position = p;
		targetPosition = transform.position;
	}
}