Game Development Reference
In-Depth Information
Gosu Basics
By now Gosu should be installed and ready for a spin. But before we rush into building
our game, we have to get acquainted with our library. We will go through several simple
examples, familiarize ourselves with Gosu architecture and core principles, and take a
couple of baby steps towards understanding how to put everything together.
To make this chapter easier to read and understand, I recommend watching
Writing Games
With Ruby
talk given by
Mike Moore
at LA Ruby Conference 2014. In fact, this talk pushed
me towards rethinking this crazy idea of using Ruby for game development, so this topic
wouldn't exist without it. Thank you, Mike.
Hello World
To honor the traditions, we will start by writing “Hello World” to get a taste of what Gosu
feels like. It is based on
Ruby Tutorial
that you can find in
Gosu Wiki
.
01-hello/hello_world.rb
1
require
'gosu'
2
3
class
GameWindow
<
Gosu
::
Window
4
def
initialize
(width
=320
, height
=240
, fullscreen
=
false
)
5
super
6
self
.
caption
=
'Hello'
@message
=
Gosu
::
Image
.
from_text(
7
self
,
'Hello, World!'
,
Gosu
.
default_font_name,
30
)
8
9
end
10
11
def
draw
12
@message
.
draw(
10
,
10
,
0
)
13
end
14
end
15
16
window
=
GameWindow
.
new
17
window
.
show
Run the code:
