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rubyconf 2009
2d video game
development
with
MacRuby
matt aimonetti
Sunday, November 22, 2009
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test your memory
Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Video Games
are fun
Sunday, November 22, 2009
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Ruby
Programming
is fun
Sunday, November 22, 2009
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You have a mac
Sunday, November 22, 2009
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(if not, get one!)
Sunday, November 22, 2009
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video games on
OSX
OLD SCHOOL
from scratch
Sunday, November 22, 2009
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truth
Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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but
Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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popular
games
Sunday, November 22, 2009
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Massively
Multiplayer online
role-playing games
(MMORPG)
Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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too much work for a
hacking project
Sunday, November 22, 2009
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first person
shooter
Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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new types of
games
Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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online
games
Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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iphone games
Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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demo
Sunday, November 22, 2009
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MacRuby
Sunday, November 22, 2009
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Ruby for SCottish
Sunday, November 22, 2009
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Laurent Sansonetti
Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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on
obj-c runtime
and GC
Sunday, November 22, 2009
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COCOA
Apple's Objective-C based programming environment for
Mac OS X
Sunday, November 22, 2009
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VIDEO
GAME
Sunday, November 22, 2009
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Sunday, November 22, 2009
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Sunday, November 22, 2009
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keyboard
Sunday, November 22, 2009
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key event
keyboard
Sunday, November 22, 2009
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key event
keyboard
GameData
Sunday, November 22, 2009
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Sunday, November 22, 2009
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game loop
Sunday, November 22, 2009
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game loop
174
❶ update
layers
Sunday, November 22, 2009
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game loop
174
❶ update
layers
update
game items
Sunday, November 22, 2009
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game loop
174
❶ update
layers
reposition
update
game items
Sunday, November 22, 2009
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game loop
174
❶ update
layers
reposition
update
game items
❷ collisions
Sunday, November 22, 2009
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game loop
174
❶ update
layers
reposition
update
game items
❷ collisions
lives
points
sound
Sunday, November 22, 2009
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LOOP play
DATA
GAME
Sunday, November 22, 2009
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GAME
PLAY
Sunday, November 22, 2009
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⇧
⇧
⇧
⇧
Sunday, November 22, 2009
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NSView subclass
Interface Builder
Sunday, November 22, 2009
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NSView subclass
Interface Builder
Sunday, November 22, 2009
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class KeyboardControlView < NSView
def keyDown(event)
end
end
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class KeyboardControlView < NSView
def keyDown(event)
end
end
⇧
⇧
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acceleration
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relative
positioning
Sunday, November 22, 2009
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GAME
LOOP
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usual
workflow
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usual
workflow
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video game
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video game
Sunday, November 22, 2009
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30 x
per
second
Sunday, November 22, 2009
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moves player
moves objects
resolves collisions
updates score/level
redraws graphics
plays sounds
Sunday, November 22, 2009
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module GameLoop
def start_refreshing
@timer = NSTimer.scheduledTimerWithTimeInterval 0.03,
target: self,
selector: 'refresh_screen:',
userInfo: nil,
repeats: true
end
def refresh_screen(timer=nil)
#…
end
end
Sunday, November 22, 2009
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NSTimer.scheduledTimerWithTimeInterval 0.03,
target: self,
selector: 'refresh_screen:',
userInfo: nil,
repeats: true
cocoa class method time interval
method to call
on the target
some stuff
we don’t care
about ;)
Sunday, November 22, 2009
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IntervalTimer.new(0.03, :target => self,
:selector => 'refresh_screen:')
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def refresh_screen(timer=nil)
GameData.all_layers.each{ |layer| layer.update }
collided_bombs, collided_rubies=GameData.collisions
if !collided_bombs.empty?
loose_a_life
collided_bombs.each{|layer| layer.item.reset! }
else
collided_rubies.each do |layer|
GameData.increase_points(layer.item.points)
points.attributedStringValue =
GameData.points.to_s
layer.item.reset!
end
SoundEffects.collision(0.2) unless
collided_rubies.empty?
level_change! if change_level?
end
end
Sunday, November 22, 2009
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GameData.all_layers.each do |layer|
layer.update
end
Sunday, November 22, 2009
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collided_bombs, collided_rubies =
GameData.collisions
Sunday, November 22, 2009
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def collide_with?(other_rect)
NSIntersectsRect(rect_version, other_rect)
end
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if !collided_bombs.empty?
loose_a_life
collided_bombs.each do |layer|
layer.item.reset!
end
Sunday, November 22, 2009
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else
collided_rubies.each do |layer|
GameData.increase_points(layer.item.points)
update_points_display
layer.item.reset!
end
Sunday, November 22, 2009
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unless collided_rubies.empty?
SoundEffects.frog(0.2)
end
level_change! if change_level?
end
Sunday, November 22, 2009
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module SoundEffects
module_function
@frog = NSSound.soundNamed("Frog")
def frog(delay=0)
@frog.performSelector(:play,
withObject: nil,
afterDelay: delay)
end
end
Sunday, November 22, 2009
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GAME
DATA
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Sunday, November 22, 2009
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module GameData
module_function
end
Sunday, November 22, 2009
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class GameController
def awakeFromNib
GameData.register_controller(self)
end
end
Sunday, November 22, 2009
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GameData.all_layers
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class GameController
def display_item(item)
new_layer =
ImageLayer.alloc.initWithItem(item)
GameData.all_layers << new_layer
# [...]
end
end
Sunday, November 22, 2009
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module GameConfig
module_function
def data
@data ||= { :levels => [
{ :name => 'Pond',
:rubies => 3,
:bombs => 12,
:score_limit => 30,
:vehicle => 'nenuphar',
:bomb_image => 'bomb',
:bomb_ratio => 1,
:ruby_ratio => 1.5,
:player_width => 0.2,
:player_height => 0.2
}]
}
end
Sunday, November 22, 2009
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cocoa
hax
Sunday, November 22, 2009
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CocoaClass =~ RubyClass
Sunday, November 22, 2009
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don’t
like an
API?
Sunday, November 22, 2009
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Wrap it
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class NSButton
def title_color=(color)
current_font =
self.attributedTitle.attribute(NSFontAttributeName,
atIndex: 0,
effectiveRange: nil)
opts = { NSForegroundColorAttributeName => color,
NSFontAttributeName => current_font }
self.attributedTitle =
NSAttributedString.alloc.initWithString( self.title,
attributes: opts)
end
end
Sunday, November 22, 2009
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compilation
Sunday, November 22, 2009
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Sunday, November 22, 2009
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PATH="$PATH:/usr/local/bin"
macruby_deploy "$TARGET_BUILD_DIR/
$PROJECT_NAME.app" --embed --no-stdlib
--compile
Sunday, November 22, 2009
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wanna
hack?
Sunday, November 22, 2009
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best score
post score
Sunday, November 22, 2009
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gosu
framework
Sunday, November 22, 2009
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chipmunk
physics
Sunday, November 22, 2009
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http://github.com/
mattetti/phileas_frog
Sunday, November 22, 2009
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Sunday, November 22, 2009
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Thanks
Sunday, November 22, 2009