How to rotate a spacecraft using the mouse instead of butttons?

Questions & Answers
1

Hello,

I’m working on a space sim at the moment, and my current controls are quite difficult to use, as I have different input pairs for Roll, Pitch and Yaw. Is there any way that I could use the mouse’s movement to alter the pitch and yaw, as Pitch is up/down, and Yaw is left/right. An example of this mechanic would be No Man’s Sky, and I was wondering if anyone could help me implement it, with possibly some Camera delay too. My central control script is below.

void Start()
{
    rigidBody = GetComponent<Rigidbody>();
    OriginalDrag = rigidBody.drag;
    OriginalAngularDrag = rigidBody.angularDrag;

    for(int i = 0; i < transform.childCount; i++)
    {
        foreach(var componentsInChild in transform.GetChild(i).GetComponentsInChildren<WheelCollider>())
        {
            componentsInChild.motorTorque = 0.18f;
        }
    }
}

public void Move(float rollInput, float pitchInput, float yawInput, float throttleInput, float verticalInput, bool airBrakes)
{
    this.RollInput = rollInput;
    this.PitchInput = pitchInput;
    this.YawInput = yawInput;
    this.ThrottleInput = throttleInput;
    this.AirBrakes = airBrakes;
    this.VerticalInput = verticalInput;
    
    Throttle = Input.GetAxis("Throttle");
    ClampInput();
    CalculateRollAndPitchAngles();
    //AutoLevel();
    CalculateForwardSpeed();
    ControlThrottle();
    CalculateDrag();
    CalculateLinearForces();
    CalculateTorque();
    if(Throttle < 0.1f)
    {
        Vector3 currentVelocity = rigidBody.velocity;
        Vector3 newVelocity = currentVelocity * Time.deltaTime;
        rigidBody.velocity = currentVelocity - newVelocity;
    }
    //TPS();
}

void ClampInput()
{
    RollInput = Mathf.Clamp(RollInput, -1, 1);
    PitchInput = Mathf.Clamp(PitchInput, -1, 1);
    YawInput = Mathf.Clamp(YawInput, -1, 1);
    ThrottleInput = Mathf.Clamp(ThrottleInput, 0, 1);

}

void CalculateRollAndPitchAngles()
{
    Vector3 flatForward = transform.forward;
    flatForward.y = 0;

    if(flatForward.sqrMagnitude > 0)
    {
        flatForward.Normalize();
        Vector3 localFlatForward = transform.InverseTransformDirection(flatForward);
        PitchAngle = Mathf.Atan2(localFlatForward.y, localFlatForward.z);

        Vector3 flatRight = Vector3.Cross(Vector3.up, flatForward);
        Vector3 localFlatRight = transform.InverseTransformDirection(flatRight);
        RollAngle = Mathf.Atan2(localFlatRight.y, localFlatRight.x);
    }
}

void AutoLevel()
{
    BankedTurnAmount = Mathf.Sin(RollAngle);

    if(RollInput == 0f)
    {
        RollInput = RollAngle * AutoRollLevel;
    }

    if(PitchInput == 0f)
    {
        PitchInput = -PitchAngle * AutoPitchLevel;
        PitchInput -= Mathf.Abs(BankedTurnAmount * BankedTurnAmount * AutoTurnPitch);
    }
}

void CalculateForwardSpeed()
{
    Vector3 localVelocity = transform.InverseTransformDirection(rigidBody.velocity);
    ForwardSpeed = Mathf.Max(0, localVelocity.z * 10);
}   

void ControlThrottle()
{
    
    if (Immobilized)
    {
        ThrottleInput = -0.5f;
    }

    ThrottleInput = Mathf.Clamp01(Throttle + ThrottleInput * Time.deltaTime * ThrottleChangeSpeed);
    EnginePower = Throttle * MaxEnginePower;

    
}

void CalculateDrag()
{
    float extraDrag = rigidBody.velocity.magnitude * DragIncreaseFactor;
    rigidBody.drag = (AirBrakes ? (OriginalDrag + extraDrag) * AirBreaksEffect : OriginalDrag + extraDrag);
    rigidBody.angularDrag = OriginalAngularDrag * ForwardSpeed / 1000 + OriginalAngularDrag;
}

void CalculateLinearForces()
{
    Vector3 forces = Vector3.zero;
    forces += EnginePower * transform.forward;
    forces += VerticalInput * 100 * transform.up;

    rigidBody.AddForce(forces);

}

void CalculateTorque()
{
    Vector3 torque = Vector3.zero;
    torque += PitchInput * PitchEffect * transform.right;
    torque += YawInput * 100 * transform.up;
    torque += RollInput * RollEffect * transform.forward;
    torque += BankedTurnAmount * BankedTurnEffect * transform.up;
    rigidBody.AddTorque(torque * AeroFactor);
}

public void Immobilize()
{
    Immobilized = true;
}

public void Reset()
{
    Immobilized = false;
}

I’m pretty new to Unity and C#, and I’d really appreciate your help. I’ve tried to use the Camera section in the FirstPersonController asset script, but I can’t wire it all up.

2

Use the Input.GetAxis(string AxisName) for this… Here’s the ones that would work here

float YawChange = Input.GetAxis("Mouse X");
float PitchChange = Input.GetAxis("Mouse Y");

//("Yaw" and "Pitch" are public variables)

Yaw += YawChange;
Pitch += PitchChange;

Note that the input.getaxis gets the movement of the mouse, so you will have to use them as adding and subtracting like above