@netlogo/nettango v0.16.6
Building, Testing, and Publishing
If you have Node.js 14, 16, or 18+ installed you should be able to do:
npm install
npm run buildAnd you'll get everything packaged up to the dist/ folder. nettango.js is the entry point.
To test run npm run test. To publish run npm publish; you must have appropriate credentials configured for npm.
Developing NetTango Web with NetLogo Web
NetTango is included as a normal package dependency by the Galapagos project. It's used there to create the NetTango builder, which enables creation of domain-specific NetTango Web projects that can be run in "play mode" by end users. Doing development of NetTango Web often includes changes to this NetTango core library, which is used to create the drag and drop block workspaces and to generate the code from the blocks the user has positioned.
To work on the whole NetTango Web application, you will need to get the Galapagos repository building and running. The Galapagos repository contains a utility script that contains more information on a workflow for making changes to this core library and getting it used by a local version of the Galapagos repository. The short version is that you need:
1) To use npm to link your local core library instead of the public release version, to make sure your version is picked up when you do sbt run to start the Play Framework development web server.
2) To manually copy your generated NetTango core library files when you make changes after starting the web server, as it won't seen those changes without restarting (which takes a long time). The utility script does this for you.
Getting Started with NetTango Modeling
NetTango is published as a package on the npm package directory. You can include it as a regular JavaScript dependency if your project uses a package.json file with the npm or yarn tools:
{
"name": "my-app",
"version": "1.0.0",
"dependencies": {
"nettango": "0.11.1"
}
}To create a NetTango workspace, you will need to include the nettango.js file in your project, as well as the nettango.css file for styling.
A basic HTML example might them look like this:
<!DOCTYPE html>
<html>
<head>
<title>NetTango Example</title>
<link href="https://fonts.googleapis.com/css?family=Poppins" rel="stylesheet">
<link href="nettango.css" rel="stylesheet">
<script src="nettango.js"></script>
</head>
<body>
<div id="nt-containerish">
<canvas id="nt-workspace" width="800" height="600" style="background: #fef9f6;"></canvas>
</div>
<script>
document.body.onload = function() {
// STEP 1: Define the blocks in the workspace
var workspaceDefinition = {
"blocks" : [
{
"action" : "test block"
}
]
};
// STEP 2: Initialize the workspace (with the canvasId and the list of blocks)
NetTango.restore("nt-workspace", workspaceDefinition);
// STEP 3: Add a callback to catch program changed events
NetTango.addProgramChangedCallback("nt-workspace", function(canvasId) {
var code = NetTango.exportCode(canvasId, "NetLogo");
console.log(code);
// send code to NetLogo Web here!
});
}
</script>
</body>
</html>Load this file into a web browser (Chrome, Firefox, or Safari). If everything works, you should see a workspace with just one block available in the menu.
The next step is to try a more full-fledged block definition object. Try replacing workspaceDefinition with this object:
var workspaceDefinition = {
"blocks" : [
{
"action" : "\uD83D\uDC3A wolf actions ",
"type" : "nlogo:procedure",
"start" : true,
"limit" : 1,
"format" : "to wolf-actions",
"blockColor" : "#b55",
"required" : true
},
{
"action" : "\uD83D\uDC3A forward",
"format" : "forward {0}",
"params" : [
{
"type" : "range",
"min" : 0,
"max" : 3,
"step" : 0.1,
"default" : 1,
"name" : "steps"
}
]
},
{
"action" : "\uD83D\uDC3A left",
"format" : "left random {0}",
"params" : [
{
"type" : "range",
"min" : 0,
"max" : 90,
"step" : 1,
"default" : 50,
"random" : true,
"name" : "amount",
"unit" : "\u00B0"
}
]
},
{
"action" : "\uD83D\uDC3A right",
"format" : "right random {0}",
"params" : [
{
"type" : "range",
"min" : 0,
"max" : 90,
"step" : 1,
"default" : 50,
"random" : true,
"name" : "amount",
"unit" : "\u00B0"
}
]
},
{
"action" : "\uD83D\uDC3A change energy",
"format" : "set energy energy + {0}",
"params" : [ { "type" : "range", "min" : -20, "max" : 20, "step" : 0.5, "default" : 1, "name" : "amount" }]
},
{
"action" : "\uD83D\uDC3A hatch",
"format" : "hatch 1",
"blockColor" : "#916da0",
"params" : [
{ "type" : "int", "min" : 1, "name" : "child count", "default" : 1 }
]
},
{
"action" : "die",
"blockColor" : "#916da0",
},
{
"action" : "\uD83D\uDC3A if energy <= 0?",
"format" : "if energy <= 0",
"blockColor" : "#89a",
"clauses" : [ ]
},
{
"action" : "\uD83D\uDC11 if sheep-here?",
"format" : "if any? sheep-here",
"blockColor" : "#89a",
"clauses" : [ ]
},
{
"action" : "\uD83D\uDC11 ask sheep-here",
"blockColor" : "#89a",
"format" : "ask sheep-here",
"clauses" : [ ]
},
{
"action" : "chance",
"blockColor" : "#89a",
"format" : "if random 100 < {0}",
"clauses" : [ ],
"params" : [
{
"type" : "range",
"min" : 0,
"max" : 100,
"step" : 0.5,
"default" : 20,
"unit" : "%",
"name" : "percent"
}
]
}
]
};