HorsebackRidingSystem

using UnityEngine;
using UnityEngine.UI;
using System.Collections;
using System.Collections.Generic;

public class HorsebackRidingSystem : MonoBehaviour
{
    public float mountRange = 3f;
    public GameObject player;
    public GameObject[] horses;
    public Transform ridingTextUI;
    public Animator horseAnimator;
    public GameObject playerUnmountPosition;
    public LayerMask terrainLayer;

    private List<Transform> horsesInRange = new List<Transform>();
    private Transform mountedHorse;
    private Vector3 playerOffsetFromHorse;

    private bool isMounted = false;
    private bool isRiding = false;
    private bool isGalloping = false;
    private bool isJumping = false;

    private void Update()
    {
        // Check if the player reference is null
        if (player == null || ridingTextUI == null || horseAnimator == null)
        {
            Debug.LogError("Player, Riding Text UI, or Horse Animator references are not assigned in the inspector!");
            return;
        }

        UpdateHorsesInRange();

        if (!isMounted)
        {
            if (horsesInRange.Count > 0 && Input.GetKeyDown(KeyCode.E))
            {
                Mount(GetClosestHorse());
            }
            else if (horsesInRange.Count > 0)
            {
                ridingTextUI.GetComponent<Text>().text = "Hit E to Mount";
            }
            else
            {
                ridingTextUI.GetComponent<Text>().text = " ";
            }
        }
        else if (!isRiding)
        {
            if (Input.GetKeyDown(KeyCode.E))
            {
                Dismount();
            }
            else if (Input.GetKeyDown(KeyCode.R))
            {
                StartRiding();
            }
            else
            {
                ridingTextUI.GetComponent<Text>().text = "Hit R to Ride or E to unmount";
            }
        }
        else
        {
            if (Input.GetKeyDown(KeyCode.Space) && !isJumping)
            {
                Jump();
            }
            else if (Input.GetKeyDown(KeyCode.R))
            {
                StopRiding();
            }
            else if (Input.GetKeyDown(KeyCode.LeftShift))
            {
                StartGallop();
            }
            else if (Input.GetKeyUp(KeyCode.LeftShift))
            {
                StopGallop();
            }
            else
            {
                ridingTextUI.GetComponent<Text>().text = "Hold Left Shift to gallop\nSpace to jump\nR to stop riding";
            }
        }
    }

    private void UpdateHorsesInRange()
    {
        horsesInRange.Clear();

        foreach (GameObject horse in horses)
        {
            if (horse == null)
            {
                Debug.LogWarning("One of the horses is null!");
                continue;
            }

            float distance = Vector3.Distance(player.transform.position, horse.transform.position);
            if (distance <= mountRange)
            {
                horsesInRange.Add(horse.transform);
            }
        }
    }

    private Transform GetClosestHorse()
    {
        float minDistance = Mathf.Infinity;
        Transform closestHorse = null;

        foreach (Transform horse in horsesInRange)
        {
            if (horse == null)
            {
                Debug.LogWarning("One of the horses is null!");
                continue;
            }

            float distance = Vector3.Distance(player.transform.position, horse.position);
            if (distance < minDistance)
            {
                minDistance = distance;
                closestHorse = horse;
            }
        }

        return closestHorse;
    }

    private void Mount(Transform horse)
    {
        if (horse == null)
        {
            Debug.LogWarning("No horse found to mount!");
            return;
        }

        if (player == null || ridingTextUI == null)
        {
            Debug.LogError("Player or Riding Text UI references are not assigned in the inspector!");
            return;
        }

        ridingTextUI.GetComponent<Text>().text = "Hit R to Ride or E to unmount";
        mountedHorse = horse;
        mountedHorse.Find("Rider").gameObject.SetActive(true);
        player.SetActive(false);
        playerOffsetFromHorse = player.transform.position - mountedHorse.position;

        // Activate HorseMouseMovement script
        HorseMouseMovement horseMouseMovement = mountedHorse.GetComponent<HorseMouseMovement>();
        if (horseMouseMovement != null)
        {
            horseMouseMovement.Activate();
        }

        player.transform.position = mountedHorse.position + playerOffsetFromHorse;

        // Update the unmounted player position to the current player position
        playerUnmountPosition.transform.position = player.transform.position;

        isMounted = true;
    }

    private void Dismount()
    {
        if (player == null || ridingTextUI == null)
        {
            Debug.LogError("Player or Riding Text UI references are not assigned in the inspector!");
            return;
        }

        player.SetActive(true);

        // Deactivate HorseMouseMovement script
        HorseMouseMovement horseMouseMovement = mountedHorse.GetComponent<HorseMouseMovement>();
        if (horseMouseMovement != null)
        {
            horseMouseMovement.Deactivate();
        }

        // Adjust player position to match playerUnmountPosition
        player.transform.position = playerUnmountPosition.transform.position;

        mountedHorse.Find("Rider").gameObject.SetActive(false);
        isMounted = false;
        isRiding = false;
        isGalloping = false;
        ridingTextUI.GetComponent<Text>().text = "Hit E to Mount";
    }

    private void StartRiding()
    {
        if (horseAnimator == null)
        {
            Debug.LogError("Horse Animator reference is not assigned in the inspector!");
            return;
        }

        isRiding = true;
        horseAnimator.SetTrigger("Move");
    }

    private void StopRiding()
    {
        if (horseAnimator == null)
        {
            Debug.LogError("Horse Animator reference is not assigned in the inspector!");
            return;
        }

        isRiding = false;
        isGalloping = false;
        horseAnimator.SetTrigger("Idle");
    }

    private void StartGallop()
    {
        if (horseAnimator == null)
        {
            Debug.LogError("Horse Animator reference is not assigned in the inspector!");
            return;
        }

        isGalloping = true;
        horseAnimator.SetTrigger("Run");
    }

    private void StopGallop()
    {
        if (horseAnimator == null)
        {
            Debug.LogError("Horse Animator reference is not assigned in the inspector!");
            return;
        }

        isGalloping = false;
        horseAnimator.SetTrigger("Move");
    }

    private void Jump()
    {
        if (horseAnimator == null)
        {
            Debug.LogError("Horse Animator reference is not assigned in the inspector!");
            return;
        }

        isJumping = true;
        horseAnimator.SetTrigger("Jump");
        StartCoroutine(ResetJumpFlag(1.333f)); // Adjust duration as needed
    }

    private IEnumerator ResetJumpFlag(float animationDuration)
    {
        yield return new WaitForSeconds(animationDuration);
        isJumping = false;

        if (Input.GetKey(KeyCode.LeftShift))
        {
            StartGallop();
        }
        else
        {
            horseAnimator.SetTrigger("Move");
        }
    }

    private void FixedUpdate()
    {
        if (isMounted)
        {
            RaycastHit hit;

            // Cast a ray downwards to detect the terrain beneath the horse
            if (Physics.Raycast(mountedHorse.position, Vector3.down, out hit, Mathf.Infinity, terrainLayer))
            {
                // Adjust the horse's position to match the terrain height
                Vector3 targetPosition = hit.point + Vector3.up * 0.5f; // Offset to avoid clipping into terrain
                mountedHorse.position = Vector3.Lerp(mountedHorse.position, targetPosition, Time.deltaTime * 5f);
            }
        }
    }
}