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using System;
using System.Collections;
using UnityEngine;
using UnityEngine.InputSystem;
public class GazeInteractable : MonoBehaviour
{
[Header("References")]
public Camera head;
public Transform snapPoint;
public InputActionReference rightTrigger;
[Header("Materials")]
public Material defaultMaterial;
public Material hoverMaterial;
[Header("Settings")]
public LayerMask snapLayer;
public LayerMask cubeLayer;
public float snapDistance = 0.5f;
public float lerpSpeed = 10.0f;
private bool grabbed = false;
private bool hovered = false;
private float grabDistance = 0.0f;
private Renderer cubeRenderer;
void Awake()
{
cubeRenderer = GetComponentInChildren<Renderer>();
}
void Update()
{
CheckHovered();
Grab();
Snap();
cubeRenderer.material = hovered ? hoverMaterial : defaultMaterial;
}
private void CheckHovered()
{
hovered = Physics.Raycast(head.transform.position, head.transform.forward, out RaycastHit hit, cubeLayer);
}
private void Grab()
{
bool pressed = rightTrigger.action.ReadValue<float>() > 0.5f;
if (pressed && !grabbed && hovered) {
grabDistance = Vector3.Distance(head.transform.position, transform.position);
grabbed = true;
} else if (!pressed && grabbed) {
grabbed = false;
FindNearestSnapPoint();
}
if (grabbed) {
transform.position = head.transform.position + head.transform.forward * grabDistance;
}
}
private void Snap()
{
if (!grabbed && snapPoint != null) {
transform.position = Vector3.Lerp(transform.position, snapPoint.position, lerpSpeed * Time.deltaTime);
transform.rotation = Quaternion.Lerp(transform.rotation, snapPoint.rotation, lerpSpeed * Time.deltaTime);
}
}
private void FindNearestSnapPoint()
{
Collider[] snapPoints = Physics.OverlapSphere(transform.position, snapDistance, snapLayer);
if (snapPoints.Length > 0) {
Transform nearest = null;
float min = float.MaxValue;
foreach (var point in snapPoints) {
float distance = Vector3.Distance(transform.position, point.transform.position);
if (distance < min) {
min = distance;
nearest = point.transform;
}
}
if (nearest != null) {
snapPoint = nearest;
}
}
}
private void OnDrawGizmosSelected()
{
Gizmos.color = Color.green;
Gizmos.DrawWireSphere(transform.position, snapDistance);
}
}
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