Tracery: a story-grammar generation library for javascript
This is my attempt to package up Tracery as a Node library.
This is hosted at npm, so it can be installed like so:
$ npm install tracery-grammar --savevar tracery = require('tracery-grammar');
var grammar = tracery.createGrammar({
'animal': ['panda','fox','capybara','iguana'],
'emotion': ['sad','happy','angry','jealous'],
'origin':['I am #emotion.a# #animal#.'],
});
grammar.addModifiers(tracery.baseEngModifiers);
console.log(grammar.flatten('#origin#'));Sample output:
I am a happy iguana.
I am an angry fox.
I am a sad capybara.
You can also call tracery.setRandom to use a random function other than Math.random.
var tracery = require('tracery-grammar');
var seedrandom = require('seedrandom');
tracery.setRandom(seedrandom('controlled-seed'));
In this example, now all of the random calculations will use that seed, and repeatable results are possible.
You could also use a non-random function there if it suited your purposes. e.g.
tracery.setRandom(() => 0.1)
tracery.createGrammar({origin: ['#animal#'], animal: ['dog', 'cat']}).flatten('#origin#')
The result of that last line will always be 'cat' now.