C++ Global Cables: How to manage multiple cables?

[griffinboy]

How did you intend multiple CGs to be managed in scriptnode?
I am causing nothing but errors now that I am trying to incorporate multiple cables. I really don't understand the instructions.

//  GlobalCables.h

#pragma once

namespace project
{
    // Use this enum to refer to the cables
    enum class GlobalCables
    {
        GC1 = 0,
        GC2 = 1
    };

    // Define separate cable managers for each node
    using cable_manager_t_one = routing::global_cable_cpp_manager<SN_GLOBAL_CABLE(70357)>;
    using cable_manager_t_two = routing::global_cable_cpp_manager<SN_GLOBAL_CABLE(70358)>;
}

^ I made this header file which I assumed I'd be able to inherit nodes from, but it complains heavily.

#pragma once
#include <JuceHeader.h>
#include "src/GlobalCables.h"

namespace project
{
    using namespace juce;
    using namespace hise;
    using namespace scriptnode;

    template <int NV> struct Lufs_Out_One : public data::base,
        public global_cable_cpp_manager<SN_GLOBAL_CABLE(GlobalCables::GC1)>
    {
        SNEX_NODE(Lufs_Out_One);

        struct MetadataClass
        {
            SN_NODE_ID("Lufs_Out_One");
        };


// and then stuff like this:
  this->setGlobalCableValue<GlobalCables::GC1>(0.0);

This kind of thing does not work whatsoever! What's the intended method? I've been through 4 different methods and I cannot think what was intended with this.

@Christoph-Hart , Thanks.

[Christoph Hart]

@griffinboy said in C++ Global Cables: How to manage multiple cables?:

// Define separate cable managers for each node

Why? It will use variadic templates for building a single base class with all global cables.

[griffinboy]

@Christoph-Hart

So, writing nodes for scriptnode is the first c++ I've ever done.
Ontop of that, my understanding of the scriptnode compiler is shaky. I have yet to properly look at how it all comes together in the end. My knowledge is full of holes.

This was an attempt to resolve errors which I did not know the cause of. My scripts would always trigger errors in places outside of the script I was working on, and my troubleshooting let me on this wild goose chase all day.

[Christoph Hart]

Yeah C++ is a beast when you start out and the fact that I'm relying heavily on templates with the scriptnode API is not very helpful for a beginner because it often obfuscates the compile errors.

Now I think you're error here is coming from the line where you subclass your node:

public global_cable_cpp_manager<SN_GLOBAL_CABLE(GlobalCables::GC1)>

just use

public cable_manager_t_one

instead (or the one with both cables that is generated from HISE).

[griffinboy]

Thanks I took a proper look and I was just misunderstanding it.

The instructions tell you exactly what to do.

I think I fell into a trap because I coded up my nodes when i only had one global cable.

When you ask Hise for the GC C++ code for more than one cable, it becomes clearer how it's working.

// Use this enum to refer to the cables, eg. this->setGlobalCableValue<GlobalCables::GC1>(0.4)
enum class GlobalCables
{
	GC1 = 0,
	GC2 = 1
};
// Subclass your node from this
using cable_manager_t = routing::global_cable_cpp_manager<SN_GLOBAL_CABLE(70357),
                                                          SN_GLOBAL_CABLE(70358)>;