time += 1;
for (var i = 0; i < pixels; i++)
{
    mypixely[i] += pixelvsp[i];
    if (maintain_shape)
    {
        pixelvsp[i] += def_grav;
        if (pixelvsp[i] > max_vsp)
            pixelvsp[i] = max_vsp;
    }
    else
    {
        pixelvsp[i] += pixelgravoffset[i];
        if (pixelvsp[i] > (max_vsp + pixelvspmaxoffset[i]))
            pixelvsp[i] = max_vsp + pixelvspmaxoffset[i];
    }
    if (pixelexpandprog[i] < 1)
    {
        pixelexpandprog[i] += pixelexpandspd[i];
        if (pixelexpandprog[i] >= 1)
            pixelexpandprog[i] = 1;
        var _expand = sin(1.5707963267948966 * pixelexpandprog[i]);
        pixelexpand_h[i] = _expand;
        pixelexpand_v[i] = sin(1.0995574287564276 * _expand);
    }
    else
    {
        pixelexpand_v[i] += 0.01 + (pixelexpandspd[i] * 0.01);
        pixelexpand_h[i] += 0.01 + (pixelexpandspd[i] * 0.01);
        if (pixelvsp[i] >= 1)
        {
            pixelscale[i] -= 0.02;
            if (pixelscale[i] <= 0)
                pixelscale[i] = 0;
        }
    }
    if (!maintain_shape)
        pixelalpha[i] -= 0.01;
    if (pixelspritechangealarm[i])
        pixelspritechangealarm[i] -= 1;
}