Unity3D for Google Cardboard - unity3d

Question

I have a VR Scene with a C# Script on the camera that allows the user to Click Once to move and again to stop.
public float speed = 1.0f;
public bool startedMoving = true;
public GameObject myCam;
// Update is called once per frame
void Update () {
if (startedMoving) {
transform.position += myCam.transform.forward * speed * Time.deltaTime;
}
// if(Input.GetButtonDown("Fire1")){
if (Input.GetMouseButton(0)){
startedMoving = !startedMoving;
}
}
What I want to know is how I can CLICK & HOLD to move Backwards..?
Thank you!
~ b

Answer 1

Use enum the represent the status of the mouse instead of startedMoving or multiple booleans that will make everything easier to implement. The comment in the code describes how it works.
using UnityEngine;
using System.Collections;
public class ClickAndHeld : MonoBehaviour
{
public GameObject myCam;
CLICK_MODE clickMode = CLICK_MODE.NO_CLICK;
MOVE_DIRECTION moveDir = MOVE_DIRECTION.IDLE;
public float speed = 1.0f;
//If down for 0.5 secods the it is considered Click and Hold instead of Click
float clickHoldDetectTime = 0.5f;
float clickCounter = 0; //Dont not change
void Start()
{
StartCoroutine(mover());
}
// Update is called once per frame
void Update()
{
if (Input.GetMouseButton(0))
{
//If in NO_CLICK, set to CLICKED
if (clickMode == CLICK_MODE.NO_CLICK)
{
//Change the mode to CLICKED
clickMode = CLICK_MODE.CLICKED;
}
//If in CLICKED mode, start counting to clickHoldDetectTime
if (clickMode == CLICK_MODE.CLICKED)
{
clickCounter += Time.deltaTime; //Increment counter
//Check if we have reached the clickHoldDetectTime time
if (clickCounter > clickHoldDetectTime)
{
//Reset Counter
clickCounter = 0;
//Change the mode to CLICK_AND_HELD
clickMode = CLICK_MODE.CLICK_AND_HELD;
}
}
//If STILL down and the the current mode is CLICK_AND_HELD then do clickedAndHeldDown stuff
if (clickMode == CLICK_MODE.CLICK_AND_HELD)
{
clickedAndHeldDown();
}
}
else
{
//If released and the current mode is CLICKED then do clicked stuff
if (clickMode == CLICK_MODE.CLICKED)
{
clicked();
}
//If released and the current mode is CLICK_AND_HELD, change to RELEASED then do relased stuff
if (clickMode == CLICK_MODE.CLICK_AND_HELD)
{
//Change the mode to RELEASED
clickMode = CLICK_MODE.RELEASED;
mouseReleasedAfterBeingHeld();
}
//Reset each time mouse button is released
reset();
}
}
IEnumerator mover()
{
while (true)
{
if (moveDir == MOVE_DIRECTION.IDLE)
{
}
//Move Forward
if (moveDir == MOVE_DIRECTION.FORWARD)
{
transform.position += myCam.transform.forward * speed * Time.deltaTime;
}
//Move Backward
if (moveDir == MOVE_DIRECTION.BACKWARD)
{
transform.position -= myCam.transform.forward * speed * Time.deltaTime;
}
yield return null;
}
}
private void clicked()
{
Debug.Log("CLICKED");
//If Idle, become Forward
if (moveDir == MOVE_DIRECTION.IDLE)
{
moveDir = MOVE_DIRECTION.FORWARD;
}
//If forward, moves become idle
else if (moveDir == MOVE_DIRECTION.FORWARD)
{
moveDir = MOVE_DIRECTION.IDLE;
}
//--------------------------------------------------
//If backward, moves become idle
else if (moveDir == MOVE_DIRECTION.BACKWARD)
{
moveDir = MOVE_DIRECTION.IDLE;
}
}
private void clickedAndHeldDown()
{
Debug.Log("CLICKED AND HELD");
//If Idle, becomes backward
if (moveDir == MOVE_DIRECTION.IDLE)
{
moveDir = MOVE_DIRECTION.BACKWARD;
}
}
//Called when released after being RELEASED from CLICKED_HELD
private void mouseReleasedAfterBeingHeld()
{
Debug.Log("RELEASED AFTER CLICKED AND HELD");
//If backward, move becomes idle
if (moveDir == MOVE_DIRECTION.BACKWARD)
{
moveDir = MOVE_DIRECTION.IDLE;
}
//--------------------------------------------------
//If forward, move becomes idle
else if (moveDir == MOVE_DIRECTION.FORWARD)
{
moveDir = MOVE_DIRECTION.IDLE;
}
}
void reset()
{
clickMode = CLICK_MODE.NO_CLICK;
clickCounter = 0;
}
}
public enum CLICK_MODE
{
NO_CLICK, CLICKED, CLICK_AND_HELD, RELEASED
}
public enum MOVE_DIRECTION
{
IDLE, FORWARD, BACKWARD
}

Answer 2

Because you only have one trigger action you're going to have to implement something time based for toggling forward/backwards movement. For example, if you press and release the trigger quickly then forward walk could be toggled, but if you're holding the trigger after N length of time then walk backwards.
He's a practical example to get you starting.
Pressing and releasing the trigger within 300ms will toggle forward movement
Pressing and holding the trigger for longer than 300ms will begin backwards movement, releasing the trigger then will stop backwards movement
This is a theoretical example
public float speed = 1.0f;
bool triggerPressed = false;
float triggerHeldTime = 0f;
public bool movingForwards = false;
public bool movingBackwards = false;
void Update ()
{
// increment hold time if we're still holding trigger
if (Input.GetMouseButton(0) && triggerPressed)
triggerHeldTime += Time.deltaTime;
if (Input.GetMouseButton(0) && !triggerPressed)
{
// reset everything when trigger initially pressed
movingForards = false;
movingBackwards = false;
triggerHeldTime = 0f;
triggerPressed = true;
}
else if (!Input.GetMouseButton(0) && triggerPressed)
{
// upon trigger release
triggerPressed = false;
// if we are not moving backwards, toggle forwards movement
if(!movingBackwards)
movingForwards = !movingForwards;
// always reset backwards movement when we release the trigger
movingBackwards = false;
triggerHeldTime = 0f;
}
// if the trigger has been held for 300ms then move backwards
if(triggerHeldTime > 0.3f)
{
moveForwards = false;
moveBackwards = true;
}
// actually perform the movement
if (moveForwards)
{
transform.position += myCam.transform.forward * speed * Time.deltaTime;
}
else if(moveBackwards)
{
transform.position -= myCam.transform.forward * speed * Time.deltaTime;
}
}