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#
# Copyright (c) 2001 by Jim Menard <jimm@io.com>
#
# Released under the same license as Ruby. See
# http://www.ruby-lang.org/en/LICENSE.txt.
#
require 'singleton'
require 'Qt'
require 'Params'
require 'Cloud'
require 'Flock'
require 'Boid'
require 'Camera'
require 'Canvas'
class World < TQt::Object
slots 'slotMove()'
include Singleton
attr_accessor :canvas
attr_reader :width, :height, :depth, :camera, :clouds, :flock
def initialize
super
@width = $PARAMS['world_width']
@height = $PARAMS['world_height']
@depth = $PARAMS['world_depth']
@clouds = []
minAltitude = $PARAMS['cloud_min_altitude']
$PARAMS['cloud_count'].times {
c = Cloud.new
c.position =
Point.new(rand(@width) - @width / 2,
rand(@height) - @height / 2,
rand(@depth - minAltitude) - @depth / 2 + minAltitude)
@clouds << c
}
# Sort clouds by height so lower/darker shadows are drawn last
@clouds.sort { |a, b| a.position.y <=> b.position.y }
@flock = Flock.new
$PARAMS['flock_boids'].times {
b = Boid.new
b.position = Point.new(rand(@width) - @width / 2,
rand(@height) - @height / 2,
rand(@depth) - @depth / 2)
@flock.add(b) # flock will delete boid
}
@clock = TQt::Timer.new()
connect(@clock, SIGNAL('timeout()'), self, SLOT('slotMove()'))
@camera = Camera.new # Reads values from params
setupTranslation()
end
# Should be called whenever camera or screen changes.
def setupTranslation
@canvas.update() if @canvas
end
def start
@clock.start($PARAMS['world_sleep_millis'])
end
def slotMove
@clouds.each { | c | c.move() }
@flock.move()
@canvas.update() if @canvas
# Camera follow boid.
# b = @flock.members.first
# @camera.position = b.position
# @camera.rotation = Graphics.rotations(b.vector)
# @camera.zoom = 1.0
end
end
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