and this one for parameters: http://www.w3schools.com/js/js_function_parameters.asp
just the alliteration reminded me
Hang on
<script>
function Animal(name, speed, focus) {
this.name = name;
this.speed = speed;
this.focus = focus; // Values: 0 - 9
this.position = 0;
this.isFocused = function() {
return Math.floor(Math.random() * 10) < this.focus
}
this.advance = function() {
if (this.isFocused()) {
this.position += this.speed;
}
}
this.progressReport = function() {
return this.name + " is at: " + this.position
}
}
var rabbit = new Animal("Jack", 10, 1);
var turtle = new Animal("Yurtle", 2, 10);
var meters = 100;
while (rabbit.position < meters && turtle.position < meters) {
rabbit.advance();
turtle.advance();
alert(rabbit.progressReport() + " | " + (turtle.progressReport()));
}
//alert(rabbit.progressReport());
//alert(turtle.progressReport());
</script>
function Animal(name, speed, focus) {
this.name = name;
this.speed = speed;
this.focus = focus; // Values: 0 - 9
this.position = 0;
this.isFocused = function() {
return Math.floor(Math.random() * 10) < this.focus
}
this.advance = function() {
if (this.isFocused()) {
this.position += this.speed;
}
}
this.progressReport = function() {
return this.name + " is at: " + this.position
}
}
var rabbit = new Animal("Jack", 10, 1);
var turtle = new Animal("Yurtle", 2, 10);
var meters = 100;
while (rabbit.position < meters && turtle.position < meters) {
rabbit.advance();
turtle.advance();
alert(rabbit.progressReport() + " | " + (turtle.progressReport()));
}
//alert(rabbit.progressReport());
//alert(turtle.progressReport());
</script>
google chrome*
Sorry. Trying to add a screen shot.
Here's the full code as it stands:
<script>
// I want to create a game in which one competitor can eliminate another. In this case, a spaceship "race." Kind of like something from "Star Wars." But because I still don't know what I'm doing, I'm trying to build a stupidly simple race game to start with. But my code is not running
function Spaceship(name, speed) {
this.name = name;
// Values 0 - 9 for speed
this.speed = speed;
this.position = 0;
alert("successfully set params")
}
this.advance = function() {
return this.position + this.speed;
alert("successfully set advance")
}
}
this.progressReport = function() {
return this.name + " is at " + this.position
}
}
var freighter = new Spaceship("Big Mac", 5, 4);
alert("successfully set Big Mac")
var battleship = new Spaceship("Warhorse", 2, 9);
alert("successfully set Warhorse")
var passengerLiner = new Spaceship("Space Duck", 7, 1);
alert("successfully set Space Duck")
var meters = 50;
alert("successfully set meters")
while ((freighter.position < meters && battleship.position < meters) && passengerLiner.position < meters) {
freighter.advance();
battleship.advance();
passengerLiner.advance();
alert(freighter.progressReport() + " | " + battleship.progressReport() + " | " passengerLiner.progressReport());
}
</script>
// I want to create a game in which one competitor can eliminate another. In this case, a spaceship "race." Kind of like something from "Star Wars." But because I still don't know what I'm doing, I'm trying to build a stupidly simple race game to start with. But my code is not running
function Spaceship(name, speed) {
this.name = name;
// Values 0 - 9 for speed
this.speed = speed;
this.position = 0;
alert("successfully set params")
}
this.advance = function() {
return this.position + this.speed;
alert("successfully set advance")
}
}
this.progressReport = function() {
return this.name + " is at " + this.position
}
}
var freighter = new Spaceship("Big Mac", 5, 4);
alert("successfully set Big Mac")
var battleship = new Spaceship("Warhorse", 2, 9);
alert("successfully set Warhorse")
var passengerLiner = new Spaceship("Space Duck", 7, 1);
alert("successfully set Space Duck")
var meters = 50;
alert("successfully set meters")
while ((freighter.position < meters && battleship.position < meters) && passengerLiner.position < meters) {
freighter.advance();
battleship.advance();
passengerLiner.advance();
alert(freighter.progressReport() + " | " + battleship.progressReport() + " | " passengerLiner.progressReport());
}
</script>
@dianapham I revised my page rebuild, BTW.
OK. Here's the race game<script>
// I want to create a game in which one competitor can eliminate another. In this case, a spaceship "race." Kind of like something from "Star Wars." But because I still don't know what I'm doing, I'm trying to build a stupidly simple race game to start with. But my code is not running
function Spaceship(name, speed) {
this.name = name;
// Values 0 - 9 for speed
this.speed = speed;
this.position = 0;
alert("successfully set params")
}
this.advance = function() {
return this.position + this.speed;
alert("successfully set advance")
}
}
this.progressReport = function() {
return this.name + " is at " + this.position
}
}
var freighter = new Spaceship("Big Mac", 5, 4);
alert("successfully set Big Mac")
var battleship = new Spaceship("Warhorse", 2, 9);
alert("successfully set Warhorse")
var passengerLiner = new Spaceship("Space Duck", 7, 1);
alert("successfully set Space Duck")
var meters = 50;
alert("successfully set meters")
while ((freighter.position < meters && battleship.position < meters) && passengerLiner.position < meters) {
freighter.advance();
battleship.advance();
passengerLiner.advance();
alert(freighter.progressReport() + " | " + battleship.progressReport() + " | " passengerLiner.progressReport());
}</script>
right before you create "this.advance = function ....." you have a closing curly brace.
that means you're closing the Spaceship
all yoru other properties aren't part of Spaceship now
I copied that part of the code from what Brook wrote, but then I modified it. Clumsily, apparently. OK, so I'll take out that bracket.
@chriscopley go ahead and grab one of the TAs in class right now since they'll be able to sit next to you and go over the code. sorry i couldn't be there.
I did. I sat with Dale, I think. The older TA. He didn't know JS real well, but did help with syntax. Got the thing to run. But my spaceships don't advance. I don't know how to add this.position and this.speed. The + apparently doesn't do it. Or I need parens. Or something.