using UnityEngine; using System.Collections.Generic; namespace RockVR.Vive { ///

/// This script implemented functionality of teleport in VR scene. ///

public class VIVE_Teleport : MonoBehaviour { ///

/// Can load on flat ///

public bool canLoadOnFlat = true; ///

/// Can load max angle ///

[Range(0, 60)] public float maxLoadAngle = 30f; ///

/// The line childrenPosition max distance ///

public float maxDistance = 5f; ///

/// Linerenderer width ///

public float lineTelepontWidth = 0.05f; ///

/// The color of can teleport ///

public Color canTeleportColor = Color.blue; ///

/// The color of can't teleport ///

public Color unTeleportColor = Color.red; ///

/// The prefab of teleport point ///

public GameObject vrTeleportSimple; ///

/// The prefab of player area ///

public GameObject vrPlayAreaSimple; ///

/// The vive's camera ///

private Transform vrCamera; ///

/// The area of player ///

private Transform vrPlayArea; ///

/// The line of teleport ///

private LineRenderer vrTeleportLine; ///

/// The teleport point position ///

private Vector3 teleportPoint; ///

/// Whether can teleport ///

private bool canTeleport = false; private bool teleportActive; private GameObject vrTeleportItem; private GameObject vrPlayerAreaItem; void Awake() { SteamVR_Camera steamCamera = this.transform.parent.gameObject.GetComponentInChildren(); if (steamCamera == null) { vrCamera = Camera.main.transform; } else { vrCamera = steamCamera.transform; } if (vrCamera == null) { Debug.LogError("vrCamera is null"); enabled = false; return; } SteamVR_PlayArea steamPlayArea = this.transform.parent.gameObject.GetComponent(); if (steamPlayArea == null) { vrPlayArea = transform.parent; } else { vrPlayArea = steamPlayArea.transform; } if (vrPlayArea == null) { Debug.LogError("vrplayarea is null"); enabled = false; return; } } void Start() { InitTeleporter(); } ///

/// Init teleporter Object ///

void InitTeleporter() { GameObject vrTeleportObject = new GameObject(string.Format("[{0}]VrTeleport", gameObject.name)); vrTeleportObject.transform.localScale = vrPlayArea.localScale; GameObject vrTeleportLineObject = new GameObject(string.Format("[{0}]VrTeleportLin", gameObject.name)); vrTeleportLineObject.transform.SetParent(vrTeleportObject.transform); vrTeleportLine = vrTeleportLineObject.AddComponent(); vrTeleportLine.SetWidth(lineTelepontWidth * vrPlayArea.localScale.magnitude, lineTelepontWidth * vrPlayArea.localScale.magnitude); vrTeleportLine.SetColors(canTeleportColor, canTeleportColor); vrTeleportLine.material = new Material(Shader.Find("Sprites/Default")); vrTeleportLine.enabled = false; if (vrPlayAreaSimple != null) { vrPlayerAreaItem = Instantiate(vrPlayAreaSimple, Vector3.zero, Quaternion.identity) as GameObject; vrPlayerAreaItem.transform.SetParent(vrTeleportObject.transform); vrPlayerAreaItem.transform.rotation = vrPlayArea.rotation; vrPlayerAreaItem.SetActive(false); } if (vrTeleportSimple != null) { vrTeleportItem = Instantiate(vrTeleportSimple, Vector3.zero, Quaternion.identity) as GameObject; vrTeleportItem.transform.SetParent(vrTeleportObject.transform); vrTeleportItem.SetActive(false); } } ///

/// Find the drop point ///

public void SearchDropPoint() { vrTeleportLine.enabled = true; teleportActive = true; if (teleportActive && canTeleport) { if (vrTeleportItem != null) vrTeleportItem.SetActive(true); if (vrPlayerAreaItem != null) vrPlayerAreaItem.SetActive(true); } } ///

/// Sure the drop point ///

public void ConfirmDownPoint() { vrTeleportLine.enabled = false; if (vrPlayerAreaItem != null) vrPlayerAreaItem.SetActive(false); if (vrTeleportItem != null) vrTeleportItem.SetActive(false); if (teleportActive && canTeleport) { Vector3 camSpot = new Vector3(vrCamera.position.x, 0, vrCamera.position.z); Vector3 roomSpot = new Vector3(vrPlayArea.position.x, 0, vrPlayArea.position.z); Vector3 offset = roomSpot - camSpot; vrPlayArea.position = teleportPoint + offset; } teleportActive = false; } void Update() { if (!teleportActive) return; UpdateTeleportLine(); } ///

/// Update Line ///

void UpdateTeleportLine() { List positions = new List(); Quaternion currentRotation = transform.rotation; Vector3 currentPosition = transform.position; positions.Add(currentPosition); Vector3 lastPostion = transform.position - transform.forward; Vector3 currentDirection = transform.forward; Vector3 downForward = new Vector3(transform.forward.x * 0.01f, -1, transform.forward.z * 0.01f); RaycastHit hit = new RaycastHit(); float allDistance = 0; bool isFirstArray = true; int i = 0; while (i < 500) { i++; Quaternion forDownRotate = Quaternion.LookRotation(downForward); currentRotation = Quaternion.RotateTowards(currentRotation, forDownRotate, 1f); Ray ray = new Ray(currentPosition, currentPosition - lastPostion); float rayLenght = (maxDistance * 0.05f) * vrPlayArea.localScale.magnitude; if (currentRotation == forDownRotate) { isFirstArray = false; } bool hitObject = false; hitObject = Physics.Raycast(ray, out hit, rayLenght); if (hitObject) { if (isFirstArray) { allDistance += (currentPosition - hit.point).magnitude; positions.Add(hit.point); } break; } currentDirection = currentRotation * Vector3.forward; lastPostion = currentPosition; currentPosition += currentDirection * rayLenght; if (isFirstArray) { allDistance += rayLenght; positions.Add(currentPosition); } } if (isFirstArray) { teleportPoint = positions[positions.Count - 1]; } canTeleport = CanTeleporter(hit); if (canTeleport) { vrTeleportLine.SetColors(canTeleportColor, canTeleportColor); if (vrPlayerAreaItem != null) { vrPlayerAreaItem.SetActive(true); Vector3 camPoint = new Vector3(vrCamera.position.x, 0, vrCamera.position.z); Vector3 playAreaPoint = new Vector3(vrPlayArea.position.x, 0, vrPlayArea.position.z); Vector3 offset = playAreaPoint - camPoint; vrPlayerAreaItem.transform.position = (teleportPoint + offset) + hit.normal * 0.05f; } } else { vrTeleportLine.SetColors(unTeleportColor, unTeleportColor); if (vrPlayerAreaItem != null) { vrPlayerAreaItem.SetActive(false); } if (vrTeleportItem != null) { vrTeleportItem.SetActive(false); } } if (vrTeleportItem != null) { vrTeleportItem.transform.position = teleportPoint + (hit.normal * 0.05f); if (hit.normal == Vector3.zero) { vrTeleportItem.transform.rotation = Quaternion.identity; } else { vrTeleportItem.transform.rotation = Quaternion.LookRotation(hit.normal); } } vrTeleportLine.SetVertexCount(positions.Count); vrTeleportLine.SetPositions(positions.ToArray()); } ///

/// Determine whether can transfer ///

/// The hit ray /// Whether can teleport private bool CanTeleporter(RaycastHit hit) { if (hit.transform == null) return false; if (canLoadOnFlat) { float angle = Vector3.Angle(Vector3.up, hit.normal); if (angle > maxLoadAngle) return false; } return true; } } }

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