[2016-06-13] Challenge #271 [Easy] Critical Hit

[2016-06-13] Challenge #271 [Easy] Critical Hit

/* 

https://www.reddit.com/r/dailyprogrammer/comments/4nvrnx/20160613_challenge_271_easy_critical_hit/
Description

Critical hits work a bit differently in this RPG. If you roll the maximum value on a die, you get to roll the die again and add both dice rolls to get your final score. Critical hits can stack indefinitely -- a second max value means you get a third roll, and so on. With enough luck, any number of points is possible.
Input

d -- The number of sides on your die.
h -- The amount of health left on the enemy.
Output

The probability of you getting h or more points with your die.
Challenge Inputs and Outputs

Input: d	Input: h	Output
4	1	1
4	4	0.25
4	5	0.25
4	6	0.1875
1	10	1
100	200	0.0001
8	20	0.009765625
Secret, off-topic math bonus round

What's the expected (mean) value of a D4? (if you are hoping for as high a total as possible).

*/

var d = 6;// prompt("How many sides are on your die?", "6");

var h = 10; // prompt("What's the enemy's starting hp?");



var crit = function(d,h) {
	var dieroll = Math.floor(Math.random() * d) + 1;
	console.log("You rolled a " + dieroll);
	h -= dieroll;
	console.log("The enemy's hp is now " + h + ".");
	if (dieroll === d) {
		console.log("Critical hit! Roll again.");
		crit(d,h);
	}
};

crit(d,h);

This only does the critical hit portion of the challenge