1 files changed, 82 insertions, 0 deletions
diff --git a/qtruby/rubylib/examples/ruboids/ruboids/World.rb b/qtruby/rubylib/examples/ruboids/ruboids/World.rb
new file mode 100644
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--- /dev/null
+++ b/qtruby/rubylib/examples/ruboids/ruboids/World.rb
@@ -0,0 +1,82 @@
+#
+# 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 < Qt::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
+	$PARAMS['flock_boids'].times {
+	    b = Boid.new
+	    b.position = Point.new(rand(@width) - @width / 2,
+				   rand(@height) - @height / 2,
+				   rand(@depth) - @depth / 2)
+	    @flock.add(b)	# flock will delete boid
+	}
+
+	@clock = Qt::Timer.new()
+	connect(@clock, SIGNAL('timeout()'), self, SLOT('slotMove()'))
+
+	@camera = Camera.new	# Reads values from params
+	setupTranslation()
+    end
+
+    # Should be called whenever camera or screen changes.
+    def setupTranslation
+	@canvas.update() if @canvas
+    end
+
+    def start
+	@clock.start($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
+