Load code from a text file

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bavarskis

in General Discussion • Other • 1 year ago

Hey people,

I am curious what would be the easiest way to load code from a text file.

The idea would be to have a sort of start up code, like global variables, initialization etc,

then the program would load various functions from text files according to certain input.

so if i have an synthesizer as my input, depending on the pitch i could load and run different functions.

in the same way it would be fun to write code into a text file (by playing a synth), where different notes

would represent different keywords and parameters in processing, such as C1 = ellipse(), C#1 = line(), D1 = random(), G2 = 1, G#2 = 2, etc.

so reading from text, writing into text file, and loading and running text files as code.

I have used text files for loading settings, but looking just for some hints how actual code could be loaded.

thanks!

Replies(3)

PhiLho

Re: Load code from a text file

1 year ago

Java code (thus Processing code) is compiled. In general, if you need several kind of codes, you just put it in the program, and call it when necessary. Code isn't big, so memory isn't a problem.
You can isolate code in classes, if you need more separation.

If you really need a dynamic behavior, look into the scripting API of Java (eg. using JavaScript).

bavarskis

Re: Load code from a text file

1 year ago

thanks, true, I can of course just run different functions according to the input anyway.

What I was thinking about is more like what old ZX Spectrum computers used to do,

load code while running the program, and then run the one you've just loaded.

They used to use so called FSK (frequency shift keying) modulation where all information was

encoded in sound. I would like to replicate that somehow...

Chrisir

Re: Load code from a text file

1 year ago

that's easily possible.

You just can't load the full code
but you can load a file containing C1 C#1 etc.

and then go with a switch(loadedItem)

and then

case "C1":
// draw ellipse()

etc.

so you have to code the stuff already in your program but you can make it react to what you load from the text file.

The commands are mainly loadStrings (and then split maybe) and then switch

Greetings, Chrisir

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