Opposer Vr Script - [portable]

How to Play Roblox VR on Meta Quest 2 (Join the Roblox Quest Beta) Eric Woodie YouTube• Jul 27, 2023

If you have a specific script snippet you're working on, paste it here! I can help you debug the logic or optimize the performance.

using UnityEngine;
using UnityEngine.AI;
using System.Collections;
using Unity.XR.CoreUtils;
public class OpposerVR : MonoBehaviour
[Header("Movement Settings")]
    [SerializeField] private float chaseSpeed = 3.5f;
    [SerializeField] private float patrolSpeed = 1.5f;
    [SerializeField] private float stoppingDistance = 2.0f;
    [SerializeField] private float chaseRange = 10.0f;
    [SerializeField] private float attackRange = 2.0f;
    [SerializeField] private float patrolRadius = 15.0f;
    [SerializeField] private float waitTimeAtPatrolPoint = 2.0f;
[Header("Combat Settings")]
    [SerializeField] private int maxHealth = 100;
    [SerializeField] private int attackDamage = 15;
    [SerializeField] private float attackCooldown = 1.5f;
    [SerializeField] private float attackAnimDuration = 0.5f;
    [SerializeField] private GameObject projectilePrefab;
    [SerializeField] private Transform projectileSpawnPoint;
    [SerializeField] private bool isRangedAttacker = false;
[Header("Senses")]
    [SerializeField] private float fieldOfView = 110f;
    [SerializeField] private float hearingRadius = 12f;
    [SerializeField] private LayerMask obstructionMask;
    [SerializeField] private LayerMask playerLayer;
[Header("Behavior")]
    [SerializeField] private bool useCover = true;
    [SerializeField] private float coverCheckInterval = 1.5f;
    [SerializeField] private float fleeHealthThreshold = 25f;
[Header("Audio")]
    [SerializeField] private AudioClip[] attackSounds;
    [SerializeField] private AudioClip[] hurtSounds;
    [SerializeField] private AudioClip[] deathSounds;
    [SerializeField] private AudioClip[] spottedSounds;
    [SerializeField] private float audioVolume = 0.7f;
// Components
    private NavMeshAgent agent;
    private Animator animator;
    private AudioSource audioSource;
    private Transform player;
    private XROrigin xrOrigin;
    private int currentHealth;
    private bool isDead = false;
    private bool isAttacking = false;
    private float nextAttackTime = 0f;
    private float nextCoverCheck = 0f;
    private Vector3 lastKnownPlayerPosition;
    private bool playerSpotted = false;
    private bool isInvestigating = false;
    private Vector3 investigationPoint;
    private Vector3 currentCoverPoint;
// Patrol variables
    private Vector3 patrolTarget;
    private bool isWaiting = false;
// States
    private enum AIState  Patrol, Chase, Attack, Investigate, Flee, TakeCover 
    private AIState currentState = AIState.Patrol;
void Start()
// Get components
        agent = GetComponent<NavMeshAgent>();
        animator = GetComponent<Animator>();
        audioSource = GetComponent<AudioSource>();
if (audioSource == null)
            audioSource = gameObject.AddComponent<AudioSource>();
// Find player
        xrOrigin = FindObjectOfType<XROrigin>();
        if (xrOrigin != null)
            player = xrOrigin.transform;
currentHealth = maxHealth;
        agent.speed = patrolSpeed;
// Set initial patrol point
        SetNewPatrolPoint();
// Start coroutines
        StartCoroutine(SensePlayerRoutine());
if (useCover)
            StartCoroutine(CoverCheckRoutine());
void Update()
if (isDead) return;
// State machine
        switch (currentState)
case AIState.Patrol:
                PatrolBehavior();
                break;
            case AIState.Chase:
                ChaseBehavior();
                break;
            case AIState.Attack:
                AttackBehavior();
                break;
            case AIState.Investigate:
                InvestigateBehavior();
                break;
            case AIState.Flee:
                FleeBehavior();
                break;
            case AIState.TakeCover:
                TakeCoverBehavior();
                break;
// Update animator
        UpdateAnimations();
#region Behavior Methods
private void PatrolBehavior()
// Check if reached patrol point
        if (!agent.pathPending && agent.remainingDistance < 0.5f && !isWaiting)
StartCoroutine(PatrolWait());
// Transition to chase if player spotted
        if (playerSpotted && !isInvestigating)
SwitchState(AIState.Chase);
private void ChaseBehavior()
     player == null)
SwitchState(AIState.Investigate);
            return;
float distanceToPlayer = Vector3.Distance(transform.position, player.position);
// Update last known position
        lastKnownPlayerPosition = player.position;
// Chase the player
        agent.speed = chaseSpeed;
        agent.SetDestination(player.position);
// Check for attack range
        if (distanceToPlayer <= attackRange && Time.time >= nextAttackTime)
SwitchState(AIState.Attack);
// Check if lost player
        else if (distanceToPlayer > chaseRange)
playerSpotted = false;
            SwitchState(AIState.Investigate);
// Check if health low and should flee
        else if (currentHealth <= fleeHealthThreshold)
SwitchState(AIState.Flee);
// Check for cover
        else if (useCover && Time.time >= nextCoverCheck && IsUnderFire())
SwitchState(AIState.TakeCover);
private void AttackBehavior()
if (isAttacking) return;
float distanceToPlayer = Vector3.Distance(transform.position, player.position);
if (distanceToPlayer <= attackRange)
StartCoroutine(PerformAttack());
else
SwitchState(AIState.Chase);
private void InvestigateBehavior()
if (!isInvestigating)
isInvestigating = true;
            investigationPoint = lastKnownPlayerPosition;
            agent.SetDestination(investigationPoint);
            agent.speed = patrolSpeed;
// Check if reached investigation point
        if (!agent.pathPending && agent.remainingDistance < 0.5f)
StartCoroutine(FinishInvestigation());
// Re-check for player during investigation
        if (playerSpotted)
isInvestigating = false;
            SwitchState(AIState.Chase);
private void FleeBehavior()
// Find direction away from player
        Vector3 fleeDirection = transform.position - player.position;
        Vector3 fleePoint = transform.position + fleeDirection.normalized * 15f;
// Ensure flee point is within navmesh
        NavMeshHit hit;
        if (NavMesh.SamplePosition(fleePoint, out hit, 10f, NavMesh.AllAreas))
agent.SetDestination(hit.position);
            agent.speed = chaseSpeed * 1.2f;
// Regain health or return to chase
        if (currentHealth > fleeHealthThreshold + 15f && playerSpotted)
SwitchState(AIState.Chase);
else if (!playerSpotted)
SwitchState(AIState.Patrol);
private void TakeCoverBehavior()
if (currentCoverPoint == Vector3.zero
#endregion
#region Helper Methods
private IEnumerator SensePlayerRoutine()
while (!isDead)
if (player != null && !playerSpotted)
if (CanSeePlayer() 
            yield return new WaitForSeconds(0.2f);
private bool CanSeePlayer()
if (player == null) return false;
Vector3 directionToPlayer = (player.position - transform.position).normalized;
        float angleToPlayer = Vector3.Angle(transform.forward, directionToPlayer);
if (angleToPlayer < fieldOfView / 2)
float distanceToPlayer = Vector3.Distance(transform.position, player.position);
if (distanceToPlayer <= chaseRange)
// Raycast to check for obstacles
                RaycastHit hit;
                if (Physics.Raycast(transform.position + Vector3.up * 1f, directionToPlayer, out hit, chaseRange, obstructionMask))
return false;
private bool CanHearPlayer()
if (player == null) return false;
float distanceToPlayer = Vector3.Distance(transform.position, player.position);
// Check if player is moving fast (running)
        CharacterController controller = player.GetComponent<CharacterController>();
        if (controller != null && controller.velocity.magnitude > 2f)
return distanceToPlayer < hearingRadius;
return false;
private bool IsUnderFire()
// Simple check - can be expanded with projectile hit detection
        return currentHealth < maxHealth * 0.7f;
private void FindBestCover()
// Simple cover finding - looks for objects with "Cover" tag
        GameObject[] coverObjects = GameObject.FindGameObjectsWithTag("Cover");
        float bestScore = 0f;
        Vector3 bestCover = Vector3.zero;
foreach (GameObject cover in coverObjects)
Vector3 coverPos = cover.transform.position;
            float distanceToCover = Vector3.Distance(transform.position, coverPos);
            float distanceFromPlayer = Vector3.Distance(player.position, coverPos);
// Score based on distance and protection
            float score = (100f / distanceToCover) + distanceFromPlayer;
if (score > bestScore && IsCoverValid(coverPos))
bestScore = score;
                bestCover = coverPos;
currentCoverPoint = bestCover;
private bool IsCoverValid(Vector3 coverPoint)
if (player == null) return false;
// Check if cover is between enemy and player
        Vector3 directionToPlayer = player.position - transform.position;
        Vector3 directionToCover = coverPoint - transform.position;
float angleDiff = Vector3.Angle(directionToPlayer, directionToCover);
return angleDiff < 45f;
private IEnumerator PerformAttack()
isAttacking = true;
        nextAttackTime = Time.time + attackCooldown;
// Play attack animation
        if (animator != null)
            animator.SetTrigger("Attack");
PlaySound(attackSounds);
// Wait for attack animation
        yield return new WaitForSeconds(attackAnimDuration * 0.5f);
// Deal damage
        if (player != null && Vector3.Distance(transform.position, player.position) <= attackRange)
if (isRangedAttacker && projectilePrefab != null && projectileSpawnPoint != null)
GameObject projectile = Instantiate(projectilePrefab, projectileSpawnPoint.position, Quaternion.LookRotation(player.position - projectileSpawnPoint.position));
                Projectile projectileScript = projectile.GetComponent<Projectile>();
                if (projectileScript != null)
                    projectileScript.Initialize(attackDamage, player.gameObject);
else
// Melee damage
                PlayerHealth playerHealth = player.GetComponent<PlayerHealth>();
                if (playerHealth != null)
                    playerHealth.TakeDamage(attackDamage);
yield return new WaitForSeconds(attackAnimDuration * 0.5f);
isAttacking = false;
        SwitchState(AIState.Chase);
private IEnumerator PatrolWait()
isWaiting = true;
        agent.isStopped = true;
yield return new WaitForSeconds(waitTimeAtPatrolPoint);
agent.isStopped = false;
        SetNewPatrolPoint();
        isWaiting = false;
private IEnumerator FinishInvestigation()
yield return new WaitForSeconds(2f);
        isInvestigating = false;
        playerSpotted = false;
        SwitchState(AIState.Patrol);
private IEnumerator WaitInCover()
agent.isStopped = true;
        yield return new WaitForSeconds(3f);
        agent.isStopped = false;
        SwitchState(AIState.Chase);
private IEnumerator CoverCheckRoutine()
while (!isDead)
nextCoverCheck = Time.time + coverCheckInterval;
            yield return new WaitForSeconds(coverCheckInterval);
private void SetNewPatrolPoint()
Vector3 randomDirection = Random.insideUnitSphere * patrolRadius;
        randomDirection += transform.position;
NavMeshHit hit;
        if (NavMesh.SamplePosition(randomDirection, out hit, patrolRadius, NavMesh.AllAreas))
patrolTarget = hit.position;
            agent.SetDestination(patrolTarget);
private void SwitchState(AIState newState)
if (currentState == newState) return;
// Exit current state
        switch (currentState)
case AIState.Attack:
                StopCoroutine(PerformAttack());
                isAttacking = false;
                break;
currentState = newState;
// Enter new state
        switch (currentState)
case AIState.Patrol:
                agent.speed = patrolSpeed;
                break;
            case AIState.Flee:
                if (animator != null)
                    animator.SetTrigger("Flee");
                break;
private void UpdateAnimations()
if (animator == null) return;
float speed = agent.velocity.magnitude;
        animator.SetFloat("Speed", speed);
        animator.SetBool("IsDead", isDead);
private void PlaySound(AudioClip[] clips)
if (clips == null
#endregion
#region Public Methods
public void TakeDamage(int damage)
if (isDead) return;
currentHealth -= damage;
        PlaySound(hurtSounds);
if (animator != null)
            animator.SetTrigger("Hurt");
if (currentHealth <= 0)
Die();
else
// React to being hit
            playerSpotted = true;
            lastKnownPlayerPosition = player.position;
            SwitchState(AIState.Chase);
private void Die()
isDead = true;
        agent.isStopped = true;
        PlaySound(deathSounds);
if (animator != null)
            animator.SetTrigger("Die");
// Disable collider to prevent further interaction
        Collider col = GetComponent<Collider>();
        if (col != null)
            col.enabled = false;
Destroy(gameObject, 5f);
#endregion
// Optional: Projectile script for ranged attackers
public class Projectile : MonoBehaviour
private int damage;
    private GameObject ignoreTarget;
    [SerializeField] private float speed = 20f;
    [SerializeField] private float lifetime = 5f;
public void Initialize(int dmg, GameObject ignore)
damage = dmg;
        ignoreTarget = ignore;
        Destroy(gameObject, lifetime);
void Update()
transform.Translate(Vector3.forward * speed * Time.deltaTime);
void OnTriggerEnter(Collider other)
if (other.gameObject == ignoreTarget) return;
if (other.CompareTag("Player"))
PlayerHealth playerHealth = other.GetComponent<PlayerHealth>();
            if (playerHealth != null)
                playerHealth.TakeDamage(damage);
Destroy(gameObject);

1. Breaking Muscle Memory

High-level rhythm gamers often suffer from "muscle memory fatigue," where they memorize a song’s pattern rather than actually reading the notes. An Opposer Script randomizes or inverts behaviors, forcing the player to rely purely on reaction time and reflex. It is the ultimate training tool for improving raw skill.

Script Structure:

The structure of such a script would depend heavily on the platform (e.g., Unity, Unreal Engine) and the programming languages used (e.g., C#, C++, Blueprints).

For example, in Unity with C#, a simple example of a mechanic could be: $$void opponentMovement()$$ $$$$ $$ // Define movement speed$$ $$ public float speed = 5.0f;$$ $$ // Reference to the opponent's transform$$ $$ private Transform opponent;$$ $$ // Update is called once per frame$$ $$ void Update()$$ $$ $$ $$ // Simple movement$$ $$ opponent.position += new Vector3(0, 0, speed * Time.deltaTime);$$ $$ $$ $$ $$

3. The "Guard Break" Threshold

VR players get frustrated when enemies block forever. Your script needs a stamina/value system.

• The mechanic: For every successful block by the NPC, increase a guardStress float. When it hits 100, the Opposer is forced into a "stumble" state, opening them up for a finisher.

3. Setup Instructions (Unity)