An experimental library for signal-based reactivity in Q-SYS Lua
Download and install as a design resource.
When this library is loaded, Q-SYS controls are turned into signals.
You can then use them via the q() function like so:
q(function()
Controls.LED.Value = Controls.Button.Value;
end);whereby the LED control will now always get the value of Button.
Named components are also supported:
local my_external_component = Component.New('test');
q(function()
print(my_external_component['text.1'].String);
end)or
q(function()
print(Component.New('test')['text.1'].String);
end)When a function is passed to q(), that function is stored in a functions table. The function is then executed.
reactive-q intercepts reads and writes to all controls in the Controls table, and all controls returned by Component.New(). As the function is executed, reactive-q adds the function to the listeners table for each control that is read from.
The first time that a control is accessed by a q(function), the control's EventHandler is overwritten. The new event handler first iterates through the listeners table for the control and calls those functions, before checking for the existence of a manually defined EventHandler function, and calling it too.
Additionally, any time a new value is written to a control, all the listener functions associated with that control will also be executed. This allows user-defined code to set control states in response to events such as user input, and have the q(function) declarations respond to the change.
All of the above tables are stored in a global table called _reactive_q_data.
- Add support for user-defined signals
- Error handling