background_xscale[0...7]
Returns: Real
This variable returns the x axis scale of the image that has
been used for the background_index of the same
array value. The default value is 1, but this can be set to other
values to stretch the background image.
NOTE: You cannot scale backgrounds in any way when using
the HTML5 target module without having first enabled WebGL (in the
Global Game Settings).
if room_width != background_width[0]
{
background_xscale[0] = 1 * (room_width /
background_width[0]);
}
The above code will scale background to fit the width of the room.