using System.Collections; using System.Collections.Generic; using UnityEngine; namespace BNG { /// <summary> /// Constrain a magazine when it enters this area. Attaches the magazine in place if close enough. /// </summary> public class MagazineSlide : MonoBehaviour { /// <summary> /// Clip transform name must contain this to be considered valid /// </summary> [Tooltip("Clip transform name must contain this to be considered valid")] public string AcceptableMagazineName = "Clip"; /// <summary> /// The weapon this magazine is attached to (optional) /// </summary>RaycastWeapon public Grabbable AttachedWeapon; public float ClipSnapDistance = 0.075f; public float ClipUnsnapDistance = 0.15f; /// <summary> /// How much force to apply to the inserted magazine if it is forcefully ejected /// </summary> public float EjectForce = 1f; public Grabbable HeldMagazine = null; Collider HeldCollider = null; public float MagazineDistance = 0f; bool magazineInPlace = false; // Lock in place for physics bool lockedInPlace = false; public AudioClip ClipAttachSound; public AudioClip ClipDetachSound; RaycastWeapon parentWeapon; GrabberArea grabClipArea; float lastEjectTime; void Awake() { grabClipArea = GetComponentInChildren<GrabberArea>(); if (transform.parent != null) { parentWeapon = transform.parent.GetComponent<RaycastWeapon>(); } // Check to see if we started with a loaded magazine if(HeldMagazine != null) { AttachGrabbableMagazine(HeldMagazine, HeldMagazine.GetComponent<Collider>()); } } void LateUpdate() { // Are we trying to grab the clip from the weapon CheckGrabClipInput(); // There is a magazine inside the slide. Position it properly if(HeldMagazine != null) { HeldMagazine.transform.parent = transform; // Lock in place immediately if (lockedInPlace) { HeldMagazine.transform.localPosition = Vector3.zero; HeldMagazine.transform.localEulerAngles = Vector3.zero; return; } Vector3 localPos = HeldMagazine.transform.localPosition; // Make sure magazine is aligned with MagazineSlide HeldMagazine.transform.localEulerAngles = Vector3.zero; // Only allow Y translation. Don't allow to go up and through clip area float localY = localPos.y; if(localY > 0) { localY = 0; } moveMagazine(new Vector3(0, localY, 0)); MagazineDistance = Vector3.Distance(transform.position, HeldMagazine.transform.position); bool clipRecentlyGrabbed = Time.time - HeldMagazine.LastGrabTime < 1f; // Snap Magazine In Place if (MagazineDistance < ClipSnapDistance) { // Snap in place if(!magazineInPlace && !recentlyEjected() && !clipRecentlyGrabbed) { attachMagazine(); } // Make sure magazine stays in place if not being grabbed if(!HeldMagazine.BeingHeld) { moveMagazine(Vector3.zero); } } // Stop aligning clip with slide if we exceed this distance else if(MagazineDistance >= ClipUnsnapDistance && !recentlyEjected()) { detachMagazine(); } } } bool recentlyEjected() { return Time.time - lastEjectTime < 0.1f; } void moveMagazine(Vector3 localPosition) { HeldMagazine.transform.localPosition = localPosition; } public void CheckGrabClipInput() { // No need to check for grabbing a clip out if none exists if(HeldMagazine == null || grabClipArea == null) { return; } // Don't grab clip if the weapon isn't being held if(AttachedWeapon != null && !AttachedWeapon.BeingHeld) { return; } Grabber nearestGrabber = grabClipArea.GetOpenGrabber(); if (grabClipArea != null && nearestGrabber != null) { if (nearestGrabber.HandSide == ControllerHand.Left && InputBridge.Instance.LeftGripDown) { // grab clip OnGrabClipArea(nearestGrabber); } else if (nearestGrabber.HandSide == ControllerHand.Right && InputBridge.Instance.RightGripDown) { OnGrabClipArea(nearestGrabber); } } } void attachMagazine() { // Drop Item var grabber = HeldMagazine.GetPrimaryGrabber(); HeldMagazine.DropItem(grabber, false, false); // Play Sound if(ClipAttachSound && Time.timeSinceLevelLoad > 0.1f) { VRUtils.Instance.PlaySpatialClipAt(ClipAttachSound, transform.position, 1f); } // Move to desired location before locking in place moveMagazine(Vector3.zero); // Add fixed joint to make sure physics work properly if (transform.parent != null) { Rigidbody parentRB = transform.parent.GetComponent<Rigidbody>(); if (parentRB) { FixedJoint fj = HeldMagazine.gameObject.AddComponent<FixedJoint>(); fj.autoConfigureConnectedAnchor = true; fj.axis = new Vector3(0, 1, 0); fj.connectedBody = parentRB; } // If attached to a Raycast weapon, let it know we attached something if (parentWeapon) { parentWeapon.OnAttachedAmmo(); } } // Don't let anything try to grab the magazine while it's within the weapon // We will use a grabbable proxy to grab the clip back out instead HeldMagazine.enabled = false; lockedInPlace = true; magazineInPlace = true; } /// <summary> /// Detach Magazine from it's parent. Removes joint, re-enables collider, and calls events /// </summary> /// <returns>Returns the magazine that was ejected or null if no magazine was attached</returns> Grabbable detachMagazine() { if(HeldMagazine == null) { return null; } VRUtils.Instance.PlaySpatialClipAt(ClipDetachSound, transform.position, 1f, 0.9f); HeldMagazine.transform.parent = null; // Remove fixed joint if (transform.parent != null) { Rigidbody parentRB = transform.parent.GetComponent<Rigidbody>(); if (parentRB) { FixedJoint fj = HeldMagazine.gameObject.GetComponent<FixedJoint>(); if (fj) { fj.connectedBody = null; Destroy(fj); } } } // Reset Collider if (HeldCollider != null) { HeldCollider.enabled = true; HeldCollider = null; } // Let wep know we detached something if (parentWeapon) { parentWeapon.OnDetachedAmmo(); } // Can be grabbed again HeldMagazine.enabled = true; magazineInPlace = false; lockedInPlace = false; lastEjectTime = Time.time; var returnGrab = HeldMagazine; HeldMagazine = null; return returnGrab; } public void EjectMagazine() { Grabbable ejectedMag = detachMagazine(); lastEjectTime = Time.time; StartCoroutine(EjectMagRoutine(ejectedMag)); } IEnumerator EjectMagRoutine(Grabbable ejectedMag) { if (ejectedMag != null && ejectedMag.GetComponent<Rigidbody>() != null) { Rigidbody ejectRigid = ejectedMag.GetComponent<Rigidbody>(); // Wait before ejecting // Move clip down before we eject it ejectedMag.transform.parent = transform; if(ejectedMag.transform.localPosition.y > -ClipSnapDistance) { ejectedMag.transform.localPosition = new Vector3(0, -0.1f, 0); } // Eject with physics force ejectedMag.transform.parent = null; ejectRigid.AddForce(-ejectedMag.transform.up * EjectForce, ForceMode.VelocityChange); yield return new WaitForFixedUpdate(); ejectedMag.transform.parent = null; } yield return null; } // Pull out magazine from clip area public void OnGrabClipArea(Grabber grabbedBy) { if (HeldMagazine != null) { // Store reference so we can eject the clip first Grabbable temp = HeldMagazine; // Make sure the magazine can be gripped HeldMagazine.enabled = true; // Eject clip into hand detachMagazine(); // Now transfer grab to the grabber temp.enabled = true; grabbedBy.GrabGrabbable(temp); } } public virtual void AttachGrabbableMagazine(Grabbable mag, Collider magCollider) { HeldMagazine = mag; HeldMagazine.transform.parent = transform; HeldCollider = magCollider; // Disable the collider while we're sliding it in to the weapon if (HeldCollider != null) { HeldCollider.enabled = false; } } void OnTriggerEnter(Collider other) { Grabbable grab = other.GetComponent<Grabbable>(); if (HeldMagazine == null && grab != null && grab.transform.name.Contains(AcceptableMagazineName)) { AttachGrabbableMagazine(grab, other); } } } }