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406 lines
9.8 KiB
406 lines
9.8 KiB
//======= Copyright (c) Valve Corporation, All rights reserved. ===============
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//
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// Purpose: Player interface used to query HMD transforms and VR hands
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//
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//=============================================================================
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using UnityEngine;
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using System.Collections;
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using System.Collections.Generic;
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namespace Valve.VR.InteractionSystem
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{
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//-------------------------------------------------------------------------
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// Singleton representing the local VR player/user, with methods for getting
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// the player's hands, head, tracking origin, and guesses for various properties.
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//-------------------------------------------------------------------------
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public class Player : MonoBehaviour
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{
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[Tooltip( "Virtual transform corresponding to the meatspace tracking origin. Devices are tracked relative to this." )]
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public Transform trackingOriginTransform;
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[Tooltip( "List of possible transforms for the head/HMD, including the no-SteamVR fallback camera." )]
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public Transform[] hmdTransforms;
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[Tooltip( "List of possible Hands, including no-SteamVR fallback Hands." )]
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public Hand[] hands;
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[Tooltip( "Reference to the physics collider that follows the player's HMD position." )]
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public Collider headCollider;
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[Tooltip( "These objects are enabled when SteamVR is available" )]
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public GameObject rigSteamVR;
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[Tooltip( "These objects are enabled when SteamVR is not available, or when the user toggles out of VR" )]
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public GameObject rig2DFallback;
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[Tooltip( "The audio listener for this player" )]
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public Transform audioListener;
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public bool allowToggleTo2D = true;
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//-------------------------------------------------
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// Singleton instance of the Player. Only one can exist at a time.
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//-------------------------------------------------
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private static Player _instance;
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public static Player instance
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{
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get
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{
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if ( _instance == null )
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{
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_instance = FindObjectOfType<Player>();
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}
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return _instance;
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}
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}
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//-------------------------------------------------
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// Get the number of active Hands.
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//-------------------------------------------------
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public int handCount
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{
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get
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{
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int count = 0;
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for ( int i = 0; i < hands.Length; i++ )
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{
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if ( hands[i].gameObject.activeInHierarchy )
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{
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count++;
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}
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}
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return count;
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}
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}
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//-------------------------------------------------
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// Get the i-th active Hand.
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//
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// i - Zero-based index of the active Hand to get
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//-------------------------------------------------
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public Hand GetHand( int i )
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{
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for ( int j = 0; j < hands.Length; j++ )
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{
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if ( !hands[j].gameObject.activeInHierarchy )
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{
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continue;
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}
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if ( i > 0 )
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{
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i--;
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continue;
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}
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return hands[j];
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}
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return null;
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}
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//-------------------------------------------------
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public Hand leftHand
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{
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get
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{
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for ( int j = 0; j < hands.Length; j++ )
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{
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if ( !hands[j].gameObject.activeInHierarchy )
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{
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continue;
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}
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if ( hands[j].GuessCurrentHandType() != Hand.HandType.Left )
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{
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continue;
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}
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return hands[j];
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}
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return null;
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}
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}
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//-------------------------------------------------
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public Hand rightHand
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{
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get
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{
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for ( int j = 0; j < hands.Length; j++ )
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{
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if ( !hands[j].gameObject.activeInHierarchy )
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{
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continue;
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}
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if ( hands[j].GuessCurrentHandType() != Hand.HandType.Right )
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{
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continue;
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}
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return hands[j];
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}
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return null;
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}
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}
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//-------------------------------------------------
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public SteamVR_Controller.Device leftController
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{
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get
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{
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Hand h = leftHand;
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if ( h )
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{
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return h.controller;
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}
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return null;
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}
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}
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//-------------------------------------------------
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public SteamVR_Controller.Device rightController
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{
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get
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{
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Hand h = rightHand;
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if ( h )
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{
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return h.controller;
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}
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return null;
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}
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}
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//-------------------------------------------------
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// Get the HMD transform. This might return the fallback camera transform if SteamVR is unavailable or disabled.
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//-------------------------------------------------
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public Transform hmdTransform
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{
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get
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{
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for ( int i = 0; i < hmdTransforms.Length; i++ )
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{
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if ( hmdTransforms[i].gameObject.activeInHierarchy )
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return hmdTransforms[i];
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}
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return null;
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}
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}
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//-------------------------------------------------
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// Height of the eyes above the ground - useful for estimating player height.
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//-------------------------------------------------
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public float eyeHeight
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{
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get
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{
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Transform hmd = hmdTransform;
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if ( hmd )
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{
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Vector3 eyeOffset = Vector3.Project( hmd.position - trackingOriginTransform.position, trackingOriginTransform.up );
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return eyeOffset.magnitude / trackingOriginTransform.lossyScale.x;
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}
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return 0.0f;
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}
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}
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//-------------------------------------------------
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// Guess for the world-space position of the player's feet, directly beneath the HMD.
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//-------------------------------------------------
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public Vector3 feetPositionGuess
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{
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get
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{
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Transform hmd = hmdTransform;
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if ( hmd )
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{
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return trackingOriginTransform.position + Vector3.ProjectOnPlane( hmd.position - trackingOriginTransform.position, trackingOriginTransform.up );
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}
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return trackingOriginTransform.position;
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}
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}
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//-------------------------------------------------
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// Guess for the world-space direction of the player's hips/torso. This is effectively just the gaze direction projected onto the floor plane.
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//-------------------------------------------------
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public Vector3 bodyDirectionGuess
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{
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get
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{
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Transform hmd = hmdTransform;
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if ( hmd )
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{
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Vector3 direction = Vector3.ProjectOnPlane( hmd.forward, trackingOriginTransform.up );
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if ( Vector3.Dot( hmd.up, trackingOriginTransform.up ) < 0.0f )
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{
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// The HMD is upside-down. Either
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// -The player is bending over backwards
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// -The player is bent over looking through their legs
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direction = -direction;
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}
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return direction;
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}
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return trackingOriginTransform.forward;
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}
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}
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//-------------------------------------------------
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void Awake()
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{
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if ( trackingOriginTransform == null )
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{
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trackingOriginTransform = this.transform;
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}
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}
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//-------------------------------------------------
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void OnEnable()
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{
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_instance = this;
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if ( SteamVR.instance != null )
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{
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ActivateRig( rigSteamVR );
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}
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else
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{
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#if !HIDE_DEBUG_UI
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ActivateRig( rig2DFallback );
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#endif
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}
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}
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//-------------------------------------------------
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void OnDrawGizmos()
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{
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if ( this != instance )
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{
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return;
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}
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//NOTE: These gizmo icons don't work in the plugin since the icons need to exist in a specific "Gizmos"
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// folder in your Asset tree. These icons are included under Core/Icons. Moving them into a
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// "Gizmos" folder should make them work again.
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Gizmos.color = Color.white;
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Gizmos.DrawIcon( feetPositionGuess, "vr_interaction_system_feet.png" );
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Gizmos.color = Color.cyan;
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Gizmos.DrawLine( feetPositionGuess, feetPositionGuess + trackingOriginTransform.up * eyeHeight );
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// Body direction arrow
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Gizmos.color = Color.blue;
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Vector3 bodyDirection = bodyDirectionGuess;
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Vector3 bodyDirectionTangent = Vector3.Cross( trackingOriginTransform.up, bodyDirection );
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Vector3 startForward = feetPositionGuess + trackingOriginTransform.up * eyeHeight * 0.75f;
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Vector3 endForward = startForward + bodyDirection * 0.33f;
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Gizmos.DrawLine( startForward, endForward );
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Gizmos.DrawLine( endForward, endForward - 0.033f * ( bodyDirection + bodyDirectionTangent ) );
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Gizmos.DrawLine( endForward, endForward - 0.033f * ( bodyDirection - bodyDirectionTangent ) );
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Gizmos.color = Color.red;
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int count = handCount;
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for ( int i = 0; i < count; i++ )
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{
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Hand hand = GetHand( i );
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if ( hand.startingHandType == Hand.HandType.Left )
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{
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Gizmos.DrawIcon( hand.transform.position, "vr_interaction_system_left_hand.png" );
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}
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else if ( hand.startingHandType == Hand.HandType.Right )
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{
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Gizmos.DrawIcon( hand.transform.position, "vr_interaction_system_right_hand.png" );
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}
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else
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{
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Hand.HandType guessHandType = hand.GuessCurrentHandType();
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if ( guessHandType == Hand.HandType.Left )
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{
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Gizmos.DrawIcon( hand.transform.position, "vr_interaction_system_left_hand_question.png" );
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}
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else if ( guessHandType == Hand.HandType.Right )
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{
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Gizmos.DrawIcon( hand.transform.position, "vr_interaction_system_right_hand_question.png" );
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}
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else
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{
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Gizmos.DrawIcon( hand.transform.position, "vr_interaction_system_unknown_hand.png" );
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}
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}
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}
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}
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//-------------------------------------------------
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public void Draw2DDebug()
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{
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if ( !allowToggleTo2D )
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return;
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if ( !SteamVR.active )
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return;
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int width = 100;
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int height = 25;
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int left = Screen.width / 2 - width / 2;
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int top = Screen.height - height - 10;
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string text = ( rigSteamVR.activeSelf ) ? "2D Debug" : "VR";
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if ( GUI.Button( new Rect( left, top, width, height ), text ) )
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{
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if ( rigSteamVR.activeSelf )
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{
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ActivateRig( rig2DFallback );
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}
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else
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{
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ActivateRig( rigSteamVR );
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}
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}
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}
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//-------------------------------------------------
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private void ActivateRig( GameObject rig )
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{
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rigSteamVR.SetActive( rig == rigSteamVR );
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rig2DFallback.SetActive( rig == rig2DFallback );
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if ( audioListener )
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{
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audioListener.transform.parent = hmdTransform;
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audioListener.transform.localPosition = Vector3.zero;
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audioListener.transform.localRotation = Quaternion.identity;
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}
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}
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//-------------------------------------------------
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public void PlayerShotSelf()
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{
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//Do something appropriate here
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}
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}
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}
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