Unity: How to rotate first person camera by dragging touch across? - unity3d

Maybe its worth noting that I am using the Fingers asset for touch/mouse.
Okay so I have a turret that has a first person camera, on PC it uses the axis Mouse X/Y as I move the mouse around the camera follows. But I need for Mobile to work with the axis Mouse X/Y to drag the camera using touch.
What I need help with is:
As my fingers drags across the screen to move the camera's rotation not position. The position is modified by the vehicle.
This is the code I use for PC first person, moving the mouse:
x += Input.GetAxis("Mouse X") * xSpeed * 0.02f;
y -= Input.GetAxis("Mouse Y") * ySpeed * 0.02f;
Quaternion rotation = Quaternion.Euler(y, x, 0f);
turretHeadToMove.rotation = rotation;
How would I use touch dragging to move the rotation? instead of mouse?
Any help with this? Thank you
Here is the current code for touch
if (Input.touchCount > 0)
{
if (Input.GetTouch(0).phase == TouchPhase.Moved)
{
Touch touch = Input.GetTouch(0);
x += touch.deltaPosition.x * xSpeed * 0.02f;
y -= touch.deltaPosition.y * ySpeed * 0.02f;
Quaternion rotation = Quaternion.Euler(y, x, 0f);
turretHeadToMove.rotation = rotation;
}
}

For touch you could use
Input.GetTouch(0).deltaPosition
Try fiddle with something using this:
float strength = 2;
if (Input.touchCount == 1) {
if (Input.GetTouch(0).phase == TouchPhase.Moved)
{
Vector2 touchDirection = Input.GetTouch(0).deltaPosition;
// Update ur transform.Rotate the way u desire
// Different depending on using 1st person, 3rd person etc.
}
}

Related

Camera rotation with interpolation

I have an object that rotates on the y axis with the "Mouse X" input and a video camera that through a slerp quaternion should follow the rotation of the object.
Unfortunately, when I rotate the object with fast mouse movements, the rotation of the slerp camera stops as if it hits a wall and does not follow that of the object.
Without quaternion slerp it works following the object but I need to do it with the interpolation.
rotation object (in LateUpdate:
float rot = Input.GetAxisRaw("Mouse X") * speedrotation;
transform.Rotate(0, rot, 0);
rotation camera (in LateUpdate):
var rot = Quaternion.Slerp(camera.transform.rotation, object.rotation, speed_rot * Time.deltaTime);
camera.transform.position = object.transform.position + rot;
camera.transform.LookAt(object.transform.position);
Try EulerAngles instead! That is better option for make camera controller!
Simple Code:
Vector3 currentCameraEulers;
float rotationDPI = 7f; // I didn't remeber how to call better this thing
void Update(){
float cameraX = Input.GetAxisRaw("Mouse X") * rotationDPI;
if(cameraX != 0f){
currentCameraEulers = new Vector3(0, cameraX, 0);
transform.eulerAngles += currentCameraEulers;
}
}
That should work completely fine.

Unity Rotation Clamping Issue

I'm trying to implement a system where my camera will zoom in on the front face of a gameobject and I can then rotate around it with clamping.
I've managed to get it work, though I'm guessing I've done it totally wrong - Basically I'm expecting actualAngle to be NEGATIVE when I pan to the left and POSITIVE when I pan to the right.
It does work for targets that have no rotation but not for targets that do have a rotation as the centred angle is not zero.
Here's my function:
float _prevMousePosX;
void RotateCamera()
{
//Allow min -30 degrees when panning to the left
minXLimit = -50;
//And max 30 degrees when panning to the right
maxXLimit = 50;
//Work out how much the mouse has moved
var mouseX = Input.GetAxis("Mouse X");
Vector3 angle = target.position + target.rotation * transform.position * -1;
var actualAngle = angle.x;
//The angle is very small so times it by 100
actualAngle = actualAngle * 100;
//This angle is not defaulting to zero before any rotation has occurred when the game object has a rotation other than zero - I think I should be taking into account the existing rotation somehow
Debug.Log(actualAngle);
//The rest of this code is working correctly
if ((actualAngle > minXLimit && actualAngle < maxXLimit && isMoving))
{
//No - Allow rotating in either direction horizontally
if(isMoving) transform.RotateAround(target.transform.position, Vector3.up, mouseX * 1);
} else
{
//Yes, it's more than 30 degrees either left or right
//Work out which way wer're trying to drag the mouse and whether we should allow rotation further in that direction
if (mouseX>0 && actualAngle < minXLimit)
{
//Don't allow?
}
else if (mouseX<0 && actualAngle < minXLimit)
{
//Allow rotating back
if (isMoving) transform.RotateAround(target.transform.position, Vector3.up, mouseX * 1);
}
else
{
//Mouse isn't moving
}
if (mouseX>0 && actualAngle > maxXLimit)
{
//Allow rotating back
if (isMoving) transform.RotateAround(target.transform.position, Vector3.up, mouseX * 1);
}
else if(mouseX<0 && actualAngle > maxXLimit)
{
//Don't allow rotating in this direction any further
} else
{
//Mouse isn't moving
}
}
_prevMousePosX = mouseX;
}
Issue resolved.
//Work out how close we are to facing each other
//We can minus 180 because we'll always be facing each other, but just not always directly
var newAngle = Quaternion.Angle(target.rotation, transform.rotation) -180;
//Then we need to work out whether we are to it's left or it's right
float rotateDirection = (((transform.eulerAngles.y - target.eulerAngles.y) + 360f) % 360f) > 180.0f ? 1 : -1;
var actualAngle = newAngle;
//And finally we can negate our degrees if we're to it's left
actualAngle = actualAngle * rotateDirection;
You can then use actualAngle to clamp your rotation as I do above.

Car rotation help for a mini game project

I have a mini project where i have a car that drives on a cylinder and is rotating around the cylinder. When i press left mouse click the car rotates to the left and goes to the left and when i press right mouse click it rotates right and it goes right. What i want is when i release the mouse click buttons i want the car to rotate back to face the forward direction of the cylinder and continue going forward along the cylinder i have a script that is working but it is not rotating the car back to forward direction.
//THIS SCRIPT IS ATTACHED TO THE CAR
void Update(){
//CHECKS IF MOUSE BUTTON ARE CLICKED
if (Input.GetMouseButton (0)) {
rotation = -1;
} else if (Input.GetMouseButton (1)) {
rotation = 1;
} else {
rotation = 0;
}
}
void FixedUpdate(){
//moves the car forward
//rgb is the rigidbody of the car
rgb.MovePosition(rgb.position - transform.right * moveSpeed * Time.fixedDeltaTime);
// THE LINES BELOW ROTATE THE CAR TO THE LEFT OR RIGHT
Vector3 yRot = Vector3.up * rotation * rotation_speed * Time.deltaTime;
Quaternion deltaRot = Quaternion.Euler(yRot);
Quaternion targetRot = rgb.rotation * deltaRot;
rgb.MoveRotation(Quaternion.Slerp(rgb.rotation, targetRot, 50f * Time.fixedDeltaTime));
}
This is because you are setting the variable "rotation" to 0.
Vector3 yRot = Vector3.up * rotation * rotation_speed * Time.deltaTime;
Which results to 0 and your object doesn't rotate.
I would recommend you to do something like this in your update method:
if (Input.GetMouseButton (0))
{
rotation = -1;
}
else if (Input.GetMouseButton (1))
{
rotation = 1;
}
else
{
//Now when the rotation is positive,
//the object starts to rotate towards negative, but stops at 0
//Same is true when the rotation is negative
if (rgb.rotation.y > 0)
{
rotation = -1;
}
else if (rgb.rotation.y < 0)
{
rotation = 1;
}
else
{
//This needs to be added here to stop the object from rotating
//when the y rotation is already 0
rotation = 0;
}
}
Now it rotates towards 0 when you don't press anything. Also don't use Time.deltaTime in FixedUpdate.
Edit:
So I noticed that with this method it doesn't quite never return to 0. It gets very close but not close enough. By adding this to FixedUpdate the y rotation gets rounded to 0.
if (Mathf.Abs(targetRot.y) < 0.00001f)
{
targetRot = Quaternion.Euler(new Vector3(targetRot.x, 0, targetRot.z));
}

3rd person camera follower in Unity3D

I try to make a 3rd person camera, which follows my player and the camera should rotate, but not the player, if I use the right analog Stick of my controller. I followed this tutorial
My code:
void adjustCameraToPlayer()
{
Quaternion rotation = Quaternion.identity;
if (Input.GetAxis("RightStickX") != 0f)
{
float horizontal = Input.GetAxis("RightStickX") / 100f;
transform.Rotate(0, horizontal, 0);
float desiredAngle = transform.eulerAngles.y;
rotation = Quaternion.Euler(0, desiredAngle, 0);
}
transform.position = player.transform.position-(rotation * offset);
transform.LookAt(player.transform);
}
My problem is that the camera rotates way too fast, I tried to change the dividend of the horizontal value but it did not help.
That's why you always should incorporate deltaTime into transform operations that happen every frame. That way you aren't rotating it at magnitude every single frame, but instead over time. Also you should incorporate a speed variable which can be manipulated in real time, so you can tweak it just how you want:
public float speed = 5f;
void adjustCameraToPlayer()
{
Quaternion rotation = Quaternion.identity;
if (Input.GetAxis("RightStickX") != 0f)
{
float horizontal = Input.GetAxis("RightStickX");
transform.Rotate(Vector3.up * horizontal * speed * Time.deltaTime);
float desiredAngle = transform.eulerAngles.y;
rotation = Quaternion.Euler(0, desiredAngle, 0);
}
transform.position = player.transform.position-(rotation * offset);
transform.LookAt(player.transform);
}

Unity OnMouseDrag too fast drag issue

I have two sprites and I am rotating them on mouse drag. When I rotate one, another has to rotate also but a bit slower. The issue is when I move first sprite too fast. I guess Unity skips some points where I ask for current rotation of object. Here is the code:
if(objekatKliknut=="Minute"){
mouseClickPos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
Vector3 dir = mouseClickPos - transform.position;
angle = Mathf.Atan2(dir.y,dir.x) * Mathf.Rad2Deg;
angle-=90;
if (angle < 0.0f) angle += 360.0f;
angle = Mathf.Round(angle/6.0f)*6.0f;
if(angle==360) angle=0;
hand1.transform.rotation = Quaternion.AngleAxis(angle, Vector3.forward);
a1=angle;
if(a1!=a2){
float x = Mathf.Abs(a1-a2);
if(a1>a2){
moveRight = false;
if(x==6){
handRot+=addAngle*x/6f;
globeRot-=addGlobeAngle;
}
a2=a1;
}
else if(a1<a2){
moveRight = true;
if(x==6){
handRot-=addAngle*(x/6f);
globeRot+=addGlobeAngle*(x/6f);
}
a2=a1;
}
}
hand.transform.rotation = Quaternion.AngleAxis(handRot, Vector3.forward);
oblaci.transform.rotation = Quaternion.AngleAxis(globeRot, Vector3.forward);
}
hand1 is first object that I am rotating, and hand is the second one that needs to be rotated relative to the first one.
Can someone please help me?