SPILIS SLUICEBOX GENERATOR

The idea of this was a generator with that i can make fitting toghether sluiceboxes in every size, riffles in all possible shapes, classifiers that fit right in, mats with riffles, mats with extruded geometry and so on, all from one generator.
This is my idea of it. I am not a programmer and this is my third thing i made with Openscad, i know that not everything is written clean or simple or right, but like this it works for me and there is a lot of potential to add more things to the generator, like surface libraries for mats etc. , or waterconnections, fittings and tubes, or maybe underflowriffles, hydroriffles, fluidbed or even a trommel. Just everything you need to make a hole washplant.
You could add your own dxf file for riffles or extruded surface geometry
I know this can be made more dynamic in the future. I also know there could be a big mistake in it. If i made something stupid, don't be mad, help me make it better for the next version.
And if you find a design or