Swing Script

[iCade]

Hello there, I've been attempting to make a swing, however I cannot for the life of me wrap my head around the rotations.

Right now, the swing swings from left to right, instead of back to forth. I've been at this for an hour and still am no further. I am sure I am missing something fundamental, could anyone point me in the right direction? o.o

 

integer swing=FALSE;
float time=0.4;
integer steps=12;
integer swingDegrees = 10;

integer i=1;
float swingRad;
vector normal;

rotation Inverse(rotation r)
{
    r.x = -r.x;
    r.y = -r.y;
    r.z = -r.z;
    return r;
}
rotation GetParentRot()
{
    return Inverse(llGetLocalRot())*llGetRot();  
}
SetLocalRot(rotation y)
{
    llSetRot(y*Inverse(GetParentRot()));
}

default 
{
    state_entry()
    { 
        normal = llRot2Euler(llGetRot());
        swingRad=DEG_TO_RAD*swingDegrees;
        llSetTouchText("Swing");
    }
    changed(integer change)
    {
        if (change & CHANGED_OWNER)
        {
            llResetScript();
        }
    }

    touch_start(integer num)
    {
        if(swing)
        {
            swing=FALSE;
            llSetTouchText("Swing");
        }
        else
        {
            swing=TRUE;
            llSetTouchText("Stop swing");
            llSetTimerEvent(time);
        }
    }
    timer()
    {
        float stepOffset=(float)i/steps*TWO_PI;
        if(i>steps) i=1;
        if(swing==FALSE && (i==steps || i==steps/2))
        {
            llSetTimerEvent(0.0);
            SetLocalRot(llEuler2Rot(<normal.x, normal.y, normal.z + swingRad*llSin(stepOffset)>));
        } else
        {
            SetLocalRot(llEuler2Rot(<normal.x, normal.y, normal.z + swingRad*llSin(stepOffset)>));
            i++;
        }
    }
    moving_end()
    {
        normal=llRot2Euler(llGetRot());
    }
}

 

[Innula Zenovka]

Try 

       SetLocalRot(llEuler2Rot(<normal.x, normal.y+ swingRad*llSin(stepOffset), normal.z >));

 

[iCade]

Thanks! That, and adding an invisible prim as the root prim fixed all my issues.

html and css was so much easier to pick apart than lsl D:

[KS Moonites]

sigh, i met this issue as well, and still confused about how to make the object run the SWING as "↑" and "↓".

[Rolig Loon]

Innula's single line does that.  It's just changing it from rotation in the Z-axis to rotation on Y.