animal race

animal-race.html

<script>

function run(){
	var adjustedSpeed = this.speed * Math.max( .5, Math.random() );
	this.position += Math.floor( adjustedSpeed );
}
function fullName(){
	return this.name + ' the ' + this.type;
}

function Animal(type, name, speed){
	this.type = type;
	this.name = name;
	this.speed = speed;
	this.position = 0;
	this.run = run;
	this.fullName = fullName;
}

var lizard = new Animal('lizard', 'leroy', 5);
var cat = new Animal('cat', 'cathy', 8);
var beetle = new Animal('beetle', 'bob', 2);

race([lizard, cat, beetle], 100);

function race(animals, distance){


	function run(){
		var animal, position, winner;

		document.open();
		for(var i = 0; i < animals.length; i++){
			animal = animals[i];
			animal.run();

			if( animal.position >= distance ) {
				winner = animal;
			}

			position = new Array(animal.position).join('-');
			document.write('<p>' + position + animal.fullName() + '</p>');
		}
		document.close();

		return winner;
	}

	var interval = setInterval(function(){
		var animal = run();
		if( animal ) {
			clearInterval(interval);
			alert('The winner of the ' + distance + ' unit dash is ' + animal.fullName());
		}
	}, 250);
}



</script>