Thread: [PI/Any] Math Command

A friend of mine has a server, and his players wanted a math command. So I wrote this up relatively quick for him and though I would release to anyone who wants to use it. It's pretty neat.

In your Misc class add this at the top:

Code:

import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;

Then somewhere else in the class add:

Code:

	private static ScriptEngineManager manager = new ScriptEngineManager();
	private static ScriptEngine engine = manager.getEngineByName("JavaScript");
	
	public static int parse(String text){
		try{
		Double d = (Double) engine.eval(text);
		return d.intValue();
		}catch(Exception e){
			throw new NumberFormatException(e.getLocalizedMessage());
		}
	}

Then in your Commands class add:

Code:

	if(playerCommand.startsWith("math")){
		String expression = playerCommand.substring(playerCommand.indexOf(' ') + 1);
		c.sendMessage(expression + " = " + Misc.parse(expression));
	}

Thanks Matt123337 for the improved code above ^
And you are done