Snow Test

=== Snow Test ===
This is just a snow test.

Use the arrow keys to control the wind.

(Click on the flash before it recieves key input.)

by Johannes 28 Oct 2009

Tags

funbyjohn jensen johannes snow test
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/*
=== Snow Test ===
This is just a snow test.

Use the arrow keys to control the wind.

(Click on the flash before it recieves key input.)

*/

package {
    import flash.display.*;
    import flash.events.*;
    
    [SWF(backgroundColor="#444444", frameRate=30)]
    
    public class Snow extends Sprite {
        public var keyboard:Array = new Array(255);
        public var windX:Number = 0;
        public var windZ:Number = 0;
        public var snow:Object = new Object();
        public var id:Number = 0;
        public var snowInt:Number = 0;
        public var __bg:Sprite;
        public var md:Boolean = false;
        
        public const snowTime:Number = 10;
        public const maxWindX:Number = 20;
        public const maxWindZ:Number = 20;
        
        public function Snow() {
            stage.quality = StageQuality.LOW;
            
            bg(0x444444, stage.stageWidth, stage.stageHeight);
            makePlane(-stage.stageWidth, stage.stageHeight);
            makePlane(0, stage.stageHeight);
            makePlane(stage.stageWidth, stage.stageHeight);
            makePlane(-stage.stageWidth, 0);
            makePlane(0, 0);
            makePlane(stage.stageWidth, 0);
            makeSnow();
           
           stage.addEventListener(Event.ENTER_FRAME, main);
           stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDown);
           stage.addEventListener(KeyboardEvent.KEY_UP, keyUp);
           stage.addEventListener(MouseEvent.MOUSE_DOWN, mouseDown);
           stage.addEventListener(MouseEvent.MOUSE_UP, mouseUp);
        }
        
        public function keyDown(e:KeyboardEvent):void {
            keyboard[e.keyCode] = true;
        }
        
        public function keyUp(e:KeyboardEvent):void {
            keyboard[e.keyCode] = false;
        }
        
        public function mouseDown(e:MouseEvent):void {
            md = true;
        }
        
        public function mouseUp(e:MouseEvent):void {
            md = false;
        }
        
        public function bg(color:uint, w:Number, h:Number):void {
            var _bg:Sprite = new Sprite();
            
            _bg.graphics.lineStyle(1, color, 1);
            _bg.graphics.beginFill(color, 1);
            _bg.graphics.lineTo(w, 0);
            _bg.graphics.lineTo(w, h);
            _bg.graphics.lineTo(0, h);
            _bg.graphics.lineTo(0, 0);
            _bg.graphics.endFill();
            
            this.addChild(_bg);
            __bg =_bg;
        }
        
        public function makeSnow():void {
            var c_snow:Sprite = new Sprite();
            
            c_snow.graphics.lineStyle(1, 0xFFFFFF, 1);
            c_snow.graphics.beginFill(0xFFFFFF, 1);
            c_snow.graphics.drawCircle(0, 0, 8);
            c_snow.graphics.endFill();
            c_snow.x = -(stage.stageWidth/2) + Math.floor(Math.random()*(stage.stageWidth*2));
            c_snow.z = Math.floor(Math.random()*(stage.stageWidth*2));
            c_snow.y = -c_snow.z;
            
            this.addChild(c_snow);
            snow["snow"+id] = c_snow;
            id++; 
        }
        
        public function makePlane(x:Number, z:Number):void {
            var plane:Sprite = new Sprite();
            
            plane.graphics.lineStyle(3, 0x000000, 1);
            plane.graphics.beginFill(0x555555, 1);
            plane.graphics.lineTo(stage.stageWidth, 0);
            plane.graphics.lineTo(stage.stageWidth, stage.stageHeight);
            plane.graphics.lineTo(0, stage.stageHeight);
            plane.graphics.lineTo(0, 0);
            plane.graphics.endFill();
            plane.graphics.lineTo(stage.stageWidth, stage.stageHeight);
            plane.graphics.moveTo(0, stage.stageHeight);
            plane.graphics.lineTo(stage.stageWidth, 0);
            plane.x = x;
            plane.z = z;
            
            plane.rotationX=90;
            plane.y = stage.stageHeight;
            
            this.addChild(plane);
        }
        
        public function main(e:Event = null):void {
           for(var i:String in snow) {
                snow[i].x += (-1 + Math.floor(Math.random()*3)) + windX;
                snow[i].y += 5;
                snow[i].z += (-1 + Math.floor(Math.random()*3)) + windZ;
                
                if(snow[i].x > stage.stageWidth*1.5) {
                    snow[i].x = stage.stageWidth*1.5;
                }
                
                if(snow[i].x < -(stage.stageWidth/2)) {
                    snow[i].x = -(stage.stageWidth/2);
                }
                
                if(snow[i].z > stage.stageWidth*2) {
                    snow[i].z = stage.stageWidth*2;
                }
                
                if(snow[i].z < 0) {
                    snow[i].z = 0;
                }
                
                if(snow[i].y > stage.stageHeight-8){
                    snow[i].y =stage.stageHeight-8;
                    
                    delete snow[i];
                }
           }
           
           snowInt++;
           
           if(snowInt > snowTime){
               makeSnow();
               snowInt = 0;
           }
           
           if(keyboard[37]) windX -= 1;
           if(keyboard[38]) windZ += 1;
           if(keyboard[39]) windX += 1;
           if(keyboard[40]) windZ -= 1;
           
           if(windX > maxWindX || windX < -maxWindX) windX = windX > 0 ? maxWindX : -maxWindX;
           if(windZ > maxWindZ || windZ < -maxWindZ) windZ = windZ > 0 ? maxWindZ : -maxWindZ;
        }
    }
}