#!/usr/bin/env ruby
#
#
# DEMO: GameObject
#
# DESC: Displays a solid white box that can be moved with
# the number keypad. Quits when Q key pressed.
#
# DATE: 2009-02-25
#
#
#--
#
# This file is one part of:
#
# Rebirth - Game development library for Ruby
# Copyright (C) 2008, 2009 John Croisant
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License, version 2.1, as published by the Free Software Foundation.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
#++
# Prefer local library over installed version.
$:.unshift( File.join( File.dirname(__FILE__), "..", "lib" ) )
require 'rebirth'
include Rebirth
include Rubygame::EventTriggers
include Rubygame::EventActions
class MyBox < Rebirth::GameObject
def initialize( options={} )
super
add_shapes( Box.new )
make_hooks( DrawEvent => :draw,
:keypad_4 => :move_left,
:keypad_6 => :move_right,
:keypad_8 => :move_up,
:keypad_2 => :move_down,
:keypad_7 => :rot_left,
:keypad_9 => :rot_right,
:keypad_plus => :scale_up,
:keypad_minus => :scale_down )
end
def move_left
@pos += Vector[-10,0]
end
def move_right
@pos += Vector[10,0]
end
def move_up
@pos += Vector[0,10]
end
def move_down
@pos += Vector[0,-10]
end
def rot_left
@rot += 15
end
def rot_right
@rot -= 15
end
def scale_up
@scale *= 1.1
end
def scale_down
@scale *= (1 / 1.1)
end
end
View.open([640,480])
evm = EventManager.instance
evm.make_magic_hooks( :q => Proc.new { throw :quit } )
puts "Use the number keypad to move. Press Q to exit."
# Create Camera and register to receive DrawEvents
camera = Camera.new( :pos => Vector[320,240],
:rot => 0,
:scale => Vector[1,1],
# viewport deliberately off-center
:viewport => [30, 30, 600, 440],
:bgcolor => [0.2, 0, 0.2, 1])
evm.make_magic_hooks_for( camera, { DrawEvent => :pre_draw } )
# Create Box and register to receive events
box = MyBox.new( :pos => Vector[320,240],
:scale => Vector[128,64] )
evm.make_magic_hooks_for( box, { YesTrigger.new => :handle } )
# Another hook, this time for after everything is drawn
evm.make_magic_hooks_for( camera, { DrawEvent => :post_draw } )
draw_event = DrawEvent.new
catch :quit do
loop do
evm.push( draw_event )
evm.update
end
end
