ClickRPG/Assets/Scripts/CharacterController.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.AI;

public class CharacterController : MonoBehaviour
{
    private float moveToUpdateRate = 0.1f;
    private float lastMoveToUpdate;
    private IInteractable targetInteractable;
    private Transform moveTarget;
    private NavMeshAgent agent;
    private Animator animator;

    void Awake ()
    {
        agent = GetComponent<NavMeshAgent>();
        animator = GetComponentInChildren<Animator>();
    }

    void Update ()
    {
        if (moveTarget != null && Time.time - lastMoveToUpdate > moveToUpdateRate)
        {
            animator.ResetTrigger("attack");
            lastMoveToUpdate = Time.time;
            MoveToPosition(moveTarget.position);
        }
        if (animator != null)
        {
            float speed = agent.velocity.magnitude;
            float normalisedSpeed = speed / agent.speed;
            animator.SetFloat("moveSpeed", normalisedSpeed);
        }
        if (targetInteractable != null)
        {
            // Check if we've reached the destination
            // agent.remainingDistance is not always reliable, so we also check velocity
            if (!agent.pathPending && agent.remainingDistance <= agent.stoppingDistance && agent.velocity.sqrMagnitude == 0f)
            {
                // We've arrived. Trigger the interaction.
                targetInteractable.OnInteract();

                // Clear the pending interaction so it doesn't fire again
                targetInteractable = null;
            }
        }
    }

    public void LookTowards (Vector3 direction)
    {
        transform.rotation = Quaternion.LookRotation(direction);
    }

    public void MoveToTarget (Transform target)
    {
        moveTarget = target;
    }

    public void MoveToPosition (Vector3 position)
    {
        agent.SetDestination(position);
        agent.isStopped = false;
    }
    public void MoveToInteractable(Vector3 position, IInteractable interactable)
    {
        agent.SetDestination(position);
        agent.isStopped = false;

        // Remember the interactable we want to trigger on arrival
        targetInteractable = interactable;
    }

    public void StopMovement ()
    {
        agent.isStopped = true;
        moveTarget = null;
    }
}