gacha - npm Package Compare versions

Comparing version 0.1.0 to 0.2.0

lib/roguelike.js

		var gaussian = require('gaussian');

		module.exports = function(items) {
		var default_filter = function() {
		return true;
		};

		module.exports = function(items, filter) {
		var item_ids = Object.keys(items);
		var result = {};
		filter = filter \|\| default_filter;

		@@ -26,3 +31,3 @@ for (var i = 0; i < item_ids.length; i++) {
		for (var level = floor; level <= ceil; level++) {
		if (level < 0) { continue; }
		if (level < 0 \|\| !filter(item)) { continue; }

		@@ -29,0 +34,0 @@ var score = distribution.pdf(level) * item.weight;

package.json

		{
		"name": "gacha",
		"version": "0.1.0",
		"version": "0.2.0",
		"description": "Roguelike item drop distribution calculator",
		@@ -5,0 +5,0 @@ "main": "index.js",

README.md

		@@ -29,5 +29,7 @@ # Node Gacha

		// items must be an object where each property contains level, weight, and spread.
		var items = {
		"101": {
		"name": "Knife",
		"type": "weapon",
		"level": 1,
		@@ -39,2 +41,3 @@ "weight": 1.0,
		"name": "Sword",
		"type": "weapon",
		"level": 2,
		@@ -45,26 +48,41 @@ "weight": 1.0,
		"103": {
		"name": "Rapier",
		"name": "Iron Buckler",
		"type": "shield",
		"level": 3,
		"weight": 3.0,
		"spread": 3
		},
		"104": {
		"name": "Potion",
		"type": "heal",
		"level": 3,
		"weight": 1.0,
		"spread": 2
		}
		};

		var result = gacha.roguelike(items);
		var equip = gacha.roguelike(items, function(item) {
		// Optional filter callback, defaults to `return true;`
		return item.type !== 'heal';
		});

		console.log(result); // Shown Below
		console.log(equip); // Shown below

		// Which item should we spawn on level 3?
		var random = Math.random() * result[3].total;
		var lvl3 = equip[3];
		var strata = Math.random() * lvl3.total;
		var item = null;

		for (var i = 0; i < result[3].strata.length; i++) {
		if (random < result[3].strata[i]) {
		var id = result[3].lookup[i];
		console.log(items[id]);
		for (var i = 0; i < lvl3.strata.length; i++) {
		if (strata <= lvl3.strata[i]) {
		var id = lvl3.lookup[i];
		item = items[id];
		break;
		}
		}

		console.log("Receiving item for level three:", item);
		```

		### Result
		### Resulting `equip` object

		@@ -71,0 +89,0 @@ ```json

test/fixtures/roguelike-complex.json

test/roguelike.js

		@@ -105,2 +105,25 @@ var roguelike = require('../lib/roguelike.js');
		});

		describe('with filter', function() {
		var result;
		var acceptable = ['101', '102', '103', '500'];

		before(function() {
		result = roguelike(data_complex, function(item) {
		return item.type === 'weapon';
		});
		});

		it('only returns items where type=weapon', function() {
		var levels = Object.keys(result);

		for (var index = 0; index < levels.length; index++) {
		var level = result[levels[index]];

		for (var lookup = 0; lookup < level.lookup.length; lookup++) {
		assert(acceptable.indexOf(level.lookup[lookup]) !== -1);
		}
		}
		});
		});
		});

test/.swp

test/fixtures/.roguelike-double.json.swo

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