flash on 2015-3-6

/**
 * Copyright mutantleg ( http://wonderfl.net/user/mutantleg )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/nw2e
 */

package {
    import flash.text.TextField;
    import flash.ui.Keyboard;
    import flash.events.KeyboardEvent;
    import flash.geom.Rectangle;
    import flash.geom.Matrix;
    import flash.display.BitmapData;
    import flash.events.Event;
    import flash.display.Sprite;
    public class FlashTest extends Sprite {
        public function FlashTest() {
      
          deb = new TextField();
          deb.width=320;deb.height=240;deb.mouseEnabled=false;
          deb.textColor=0xFFffFFff;
          addChild(deb);
      
          pic = new BitmapData(128,128,false,0);
          pic.fillRect(new Rectangle(4,4,51,51),0x808080);
          pic.fillRect(new Rectangle(12,12,31,31),0);
         
          stage.addEventListener(KeyboardEvent.KEY_DOWN, onKdown);
          stage.addEventListener(KeyboardEvent.KEY_UP, onKup);         
          stage.addEventListener(Event.ENTER_FRAME, onEnter);      
        }//ctor
        
        public var vecKey:Vector.<Boolean> = new Vector.<Boolean>(512,false);        
        public function onKdown(e:KeyboardEvent):void { vecKey[e.keyCode] = true; }    
        public function onKup(e:KeyboardEvent):void  { vecKey[e.keyCode] = false; }
        public function isKeyDown(k:int):Boolean { return vecKey[k]; } 
      
      public var deb:TextField;
      
      public var ht:Number = 8;
      
      public var cx:Number = 10;
      public var cy:Number = 20;
      public var vx:Number = 0;
      public var vy:Number = 0;
      
      public var cw:Number = 8;
      public var ch:Number = 8;
      
      public var pic:BitmapData;
      public var mat:Matrix = new Matrix(16,0,0,16,0,0);
      
      public function isWall(ax:Number, ay:Number):Boolean
      { return pic.getPixel(ax,ay)<255;  }
      
      public var gt:int = 0;
      
       public function onEnter(e:Event):void
       {
           graphics.clear();
           graphics.lineStyle(2, 0);
           
           pic.unlock();
           pic.lock();
           
           mat.a = cw; mat.d = ch;
           graphics.beginBitmapFill(pic, mat, false,false);
            graphics.drawRect(0,0,465,465);
           graphics.endFill();
           
           graphics.lineStyle(2,0xFFffFFff);
           graphics.drawRect(cx*cw,cy*ch,cw,ch);
 
           graphics.lineStyle(2,0xFFffFFff, 0.3);         
           graphics.drawRect(cx*cw,cy*ch-ht*ch,cw,ht*ch);
           
           
           //vx = 0; vy = 0;
           vy += 0.2;
           
           if (isKeyDown(Keyboard.LEFT)) { vx = -3; }
           if (isKeyDown(Keyboard.RIGHT)) { vx = 3; }
           if (isKeyDown(Keyboard.UP)) { vy = -1; }
           if (isKeyDown(Keyboard.DOWN)) { vy = 1; }
           if (isKeyDown(Keyboard.SHIFT)) { vy = -2; }
           if (isKeyDown(Keyboard.CONTROL)) { pic.setPixel(cx,cy+1,0x808080); }

           vx *= 0.6; vy*=0.99;
           
           
           if (Math.abs(vx)<0.1){vx=0;}
           
           var i:int; var num:int;      var ax:int; var ay:int;
          // var kx:int; var ky:int;
          // kx = Math.floor(cx); ky = Math.floor(cy);

           num = Math.round(Math.abs(vx));
           ax = vx > 0 ? 1 : -1;      
           for (i = 0; i < num; i++)
           {  if (isWall(cx+ax,cy)) { vx =0; break;}   cx+=ax;  }
           
           if (vy > 0 && isWall(cx,cy+1)) { vy = 0; }
           if (vy < 0 && isWall(cx,cy-ht)) { vy = 0;}
           
           num = Math.round(Math.abs(vy));
           ay = vy > 0 ? 1 : -1;      
           for (i = 0; i < num; i++)
           {  if (isWall(cx,cy+ay)) { vy =0; break;}   cy+=ay;  }
           
           
           deb.text = ""+vx+"\n"+vy;
           
          // if (vx >0 && isWall(cx+1,cy)==false) { cx += 1 ; }           
          // if (vx <0 && isWall(cx-1,cy)==false) { cx -= 1 ; }
           
           
       }//onenter  
        
        
    }//classend
}