Function xCameraFXShakeUpdate

src/SB/Core/x/xCamera.cpp:1051–1101

}

void xCameraFXShakeUpdate(cameraFX* f, F32 dt, const xMat4x3*, xMat4x3* m)
{
    F32 x, y, scale, noise;
    xVec3 var_4C, e;

    f->shake.cycleTime += dt;

    while (f->shake.cycleTime > f->shake.cycleMax)
    {
        f->shake.dir.x = -f->shake.dir.x;
        f->shake.dir.y = -f->shake.dir.y;
        f->shake.cycleTime -= f->shake.cycleMax;
    }

    scale = f->shake.dampenRate * (f->maxTime - f->elapsedTime);
    noise = 0.1f * (xurand() - 0.5f);

    if (f->shake.radius > 0.0f && f->shake.player)
    {
        xVec3Sub(&var_4C, f->shake.player, &f->shake.epicenter);

        F32 f1 = var_4C.length();

        if (f1 > f->shake.radius)
        {
            scale = 0.0f;
        }
        else
        {
            scale *= icos(f1 / f->shake.radius * 3.1415927f * 0.5f);
        }
    }

    x = (f->shake.magnitude + noise) * f->shake.dir.x * scale / f->shake.cycleMax *
        f->shake.cycleTime * isin(f->shake.cycleTime / f->shake.cycleMax * 3.1415927f);

    noise = 0.1f * (xurand() - 0.5f);

    y = (f->shake.magnitude + noise) * f->shake.dir.y * scale / f->shake.cycleMax *
        f->shake.cycleTime * isin(f->shake.cycleTime / f->shake.cycleMax * 3.1415927f);

    xMat4x3MoveLocalRight(m, x);
    xMat4x3MoveLocalUp(m, y);

    xMat3x3GetEuler(m, &e);

    e.z += f->shake.cycleTime / f->shake.cycleMax * 0.63661975f * 0.1f * scale *
           f->shake.rotate_magnitude;

    xMat3x3Euler(m, &e);
}

void xCameraFXUpdate(xCamera* cam, F32 dt)
{