Armchair Quarterback

football.js

#!/usr/bin/env node

var down = 1;
var yards = 10;
var yard_line = 20;
var suffix = ["st", "nd", "rd", "th" ];

process.stdin.setEncoding("utf8");
process.stdin.on("data", (t) => {
    var c = t.substr(0,1);
    var gain;
    if (c === "r") {
	var run = Math.random();
	if (run > .995) {
	    console.log("FUMBLE");
	    process.exit(0);
	} else if (run > .955) {
	    gain = 0;
	    console.log("Run stopped for 0 yards.");
	} else {
	    if (run > .95) {
		gain = 1;
	    } else if (run > .85) {
		gain = 3;
	    } else {
		gain = 2;
	    }
	    yards -= gain;
	    console.log("Run for "+gain+" yards");
	}
	down += 1;
    } else if (c === "p") {
	var pass = Math.random();
	if (pass > .65) {
	    console.log("Incomplete");
	    gain = 0;
	} else if (pass > .63) {
	    console.log("INTERCEPTED!");
	    process.exit(0);
	} else {
	    gain = 1+Math.floor(10*Math.random());
	    console.log("Pass complete for "+gain+" yards.");
	}
	yards -= gain;
	down += 1;
    } else if (c === "q") {
	console.log("Goodbye");
	process.exit(0);
    } else {
	console.log("prq");
	return;
    }
    yard_line += gain;
    if (yard_line >= 100) {
	console.log("TOUCHDOWN!");
	process.exit(0);
	yard_line = 20;
	yards = 10;
	down = 1;
    } else if(yards <= 0) {
	console.log("First down!");
	yards = 100 - yard_line;
	if (yards > 10) yards = 10;
	down = 1;
    } else if (down > 4) {
	console.log("TURNOVER");
	process.exit(0);
	yards = 10;
	down = 1;
    }
console.log(down + suffix[down-1] + " and " + yards + " at the "+yard_line + " yard line: r[un] or p[ass]>");
});

console.log(down + "st and " + yards + ": r[un] or p[ass]>");