sexy background graphics!

src/states/PlayState.as

@@ -13,6 +13,7 @@ package states
 	import ui.FailOverlay;
 	import ui.HealthBar;
 	import ui.WinOverlay;
+	import world.Background;
 	import world.Level;
 	import world.LevelManager;
 
@@ -34,6 +35,7 @@ package states
 
 		private var m_player:Player;
 		private var m_enemies:FlxGroup;	// Test enemy
+		private var m_backgroundGFX:Background;
 
 		private var m_instructionText:FlxText;
 		private var m_instructionTarget:FlxSprite = null;
@@ -65,6 +67,8 @@ package states
 		{
 			super.create();
 
+			m_backgroundGFX = new Background;
+
 			m_levelManager = new LevelManager;
 			m_currentLevel = m_levelManager.getCurrentRoom();
 
@@ -87,6 +91,7 @@ package states
 			m_muteText.text = s_myMute ? "[M] Unmute" : "[M] Mute";
 
 			s_layerBackground = new FlxGroup;
+			s_layerBackground.add(m_backgroundGFX);
 			s_layerBackground.add(m_currentLevel.m_floor);
 
 			s_layerInScene = new FlxGroup;
@@ -484,6 +489,7 @@ package states
 								m_instructionText.visible = false;
 
 								m_music.stop();	// The silence is deafening
+								m_backgroundGFX.visible = false;
 							}
 						}
 					}

src/world/Background.as

@@ -0,0 +1,75 @@
+package world 
+{
+	import org.flixel.FlxG;
+	import org.flixel.FlxGroup;
+	import org.flixel.FlxSprite;
+
+	/**
+	 * Ludum Dare 21 - Escape
+	 * @author Paul S Burgess - 21/8/2011
+	 */
+	public class Background extends FlxGroup
+	{
+		[Embed(source = '../../data/textures/orb.png')] private var imgOrb:Class;
+		[Embed(source = '../../data/textures/orb_mini.png')] private var imgOrbMini:Class;
+		[Embed(source = '../../data/textures/orb_micro.png')] private var imgOrbMicro:Class;
+
+		private const NUM_ORBS:int = 80;
+		private const ORB_MAX_SPEED:int = 8;
+
+		public function Background() 
+		{
+			for (var orbLoop:int = 0; orbLoop < NUM_ORBS; orbLoop++)
+			{
+				var newOrb:FlxSprite = new FlxSprite(Math.random() * FlxG.width, Math.random() * FlxG.height);
+
+				var typeRoll:Number = Math.random();
+				if (typeRoll < 0.4)
+					newOrb.loadGraphic(imgOrb);
+				else if (typeRoll < 0.7)
+					newOrb.loadGraphic(imgOrbMini);
+				else
+					newOrb.loadGraphic(imgOrbMicro);
+				newOrb.blend = "add";
+				newOrb.alpha = 0.5 + Math.random() * 0.5;
+
+				newOrb.x -= newOrb.width / 2;
+				newOrb.y -= newOrb.height / 2;
+				newOrb.velocity.x = (Math.random() - 0.5) * ORB_MAX_SPEED * 2;
+				newOrb.velocity.y = (Math.random() - 0.5) * ORB_MAX_SPEED * 2;
+
+				add(newOrb);
+			}
+		}
+
+		override public function update():void 
+		{
+			super.update();
+
+			for each (var orb:FlxSprite in members)
+			{
+				if ( (orb.x < 0 - orb.width) || (orb.x > FlxG.width) || (orb.y < 0 - orb.height) || (orb.y > FlxG.height) )
+				{
+					// Recycle orbs:
+					orb.x = Math.random() * FlxG.width;
+					orb.y = Math.random() * FlxG.height;
+
+					var typeRoll:Number = Math.random();
+					if (typeRoll < 0.4)
+						orb.loadGraphic(imgOrb);
+					else if (typeRoll < 0.7)
+						orb.loadGraphic(imgOrbMini);
+					else
+						orb.loadGraphic(imgOrbMicro);
+					orb.blend = "add";
+					orb.alpha = 0.5 + Math.random() * 0.5;
+
+					orb.x -= orb.width / 2;
+					orb.y -= orb.height / 2;
+					orb.velocity.x = (Math.random() - 0.5) * ORB_MAX_SPEED * 2;
+					orb.velocity.y = (Math.random() - 0.5) * ORB_MAX_SPEED * 2;
+				}
+			}
+		}
+	}
+}