package  {
          import student_papervision_samples_PaperBase;
          
          import org.papervision3d.lights.PointLight3D;
          import org.papervision3d.materials.shadematerials.FlatShadeMaterial;
          import org.papervision3d.materials.utils.MaterialsList;
          import org.papervision3d.materials.WireframeMaterial;
          import org.papervision3d.objects.primitives.Cube;
          import org.papervision3d.objects.primitives.Plane;
          import org.papervision3d.objects.parsers.MD2;
          import org.papervision3d.cameras.Camera3D;
          import org.papervision3d.materials.BitmapFileMaterial;
          
          import caurina.transitions.Tweener;
          
          import flash.events.KeyboardEvent;
          import flash.text.TextField;
          import flash.text.TextFormat;
  
          public class @ax-student-papervision-samples-CF04 extends student_papervision_samples_PaperBase {
                  public var updown:Boolean = false;
                  public var leftdown:Boolean = false;
                  public var downdown:Boolean = false;
                  public var rightdown:Boolean = false;
                  public var standing:Boolean = true;
                  public var speed:Number = 150; //                        Here you can set the speed of the object. 
                  public var text:TextField = new TextField();
                  public var rotationPosition:Number = 0;        
                  public var rotationGoal:Number = 0;        
                  public var rotationBase:Number = 0; 
                  
                  
                  private var fontstyle:TextFormat = new TextFormat("Arial",44,0x000000);
                  private var cube2:Cube;
                  private var mat:FlatShadeMaterial = new FlatShadeMaterial(new PointLight3D(), 0xFFFFFF, 0xFF0000);
                  private var mat2:WireframeMaterial = new WireframeMaterial(0x00FF00);
                  private var sheepTexture:BitmapFileMaterial = new BitmapFileMaterial("Sheep.png"); // here you can set the texture image for the player-model
                  private var plane:Plane = new Plane(null, 2000, 2000, 10, 10);
                  private var sheep:MD2 = new MD2(true); //if you get errors try using false - it may be a single frame file (no animation)
                  
             
                  public function @ax-student-papervision-samples-CF04() {
                          init(600, 300);
                          
                          stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);
                          stage.addEventListener(KeyboardEvent.KEY_UP, onKeyUp);
                  }
                  
                  override protected function init3d():void{
                          cube2 = new Cube(new MaterialsList( { all: mat2 } ), 100, 100, 100);
                          cube2.y = 0;
                          cube2.x = 1000;
                          cube2.z = 1000;
                          plane.material.lineColor = 0x777777;
                          plane.material.doubleSided = true;
                          plane.pitch(90);
                          plane.y = -50;
                          default_scene.addChild(plane);
                          default_scene.addChild(cube2);
                          
                          default_camera.x = 0;
                          default_camera.z = 1000;
                          default_camera.y = 1000;
                          
                          sheep.load("sheep-walk.md2", sheepTexture); // This piece of code loads in the .md2-model
                          sheep.y = 200;
                          sheep.scale = 13;
                          sheep.rotationX = -90;
                          default_scene.addChild(sheep);
                          Tweener.addTween(sheep, { x:1000, z:1000, time:2, onComplete: randomize } );
                  }
                  
                  override protected function init2d():void {
                          addChild(text);        
                          text.selectable = false;
                          text.setTextFormat(fontstyle);
                          text.width = 800;
                          text.text = "Multimedia Authoring - ~vr0815";
                  }
                  
                  public function randomize():void {
                          cube2.x = sheep.x;
                          cube2.z = sheep.z;
                  }
                  
                  public function onKeyDown( event:KeyboardEvent ):void {
                          switch(event.keyCode) {
                                  case 38:
                                          updown = true;
                                  break;
                                  case 37:
                                          leftdown = true;
                                  break;
                                  case 40:
                                          downdown = true;
                                  break;
                                  case 39:
                                          rightdown = true;
                                  break;
                          }
                  }
                  
                  public function onKeyUp( event:KeyboardEvent ):void {
                          switch(event.keyCode) {
                                  case 38:
                                          updown = false;
                                  break;
                                  case 37:
                                          leftdown = false;
                                  break;
                                  case 40:
                                          downdown = false;
                                  break;
                                  case 39:
                                          rightdown = false;
                                  break;
                          }
                  }
                  
                  override protected function processFrame():void {
                          var xp:Number = 0;
                          var yp:Number = 0;
                          if(rotationBase == rotationPosition % 360) {
                                  if (updown && leftdown) {
                                          xp = sheep.x + speed;
                                          yp = sheep.z + speed;
                                          rotationGoal = 315; // RotationGoal keeps track of which direction you want to rotate to, in degrees.
                                          Tweener.addTween(sheep, { x:xp, z:yp, time:2, onComplete: randomize } );
                                  } else if (updown && rightdown) {
                                          xp = sheep.x + speed;
                                          yp = sheep.z - speed;
                                          rotationGoal = 45;
                                          Tweener.addTween(sheep, { x:xp, z:yp, time:2, onComplete: randomize } );
                                  } else if (downdown && leftdown) {
                                          xp = sheep.x - speed;
                                          yp = sheep.z + speed;
                                          rotationGoal = 225;
                                          Tweener.addTween(sheep, { x:xp, z:yp, time:2, onComplete: randomize } );
                                  } else if (downdown && rightdown) {
                                          xp = sheep.x - speed;
                                          yp = sheep.z - speed;
                                          rotationGoal = 135;
                                          Tweener.addTween(sheep, { x:xp, z:yp, time:2, onComplete: randomize } );
                                  } else if (updown) {
                                          xp = sheep.x + speed;
                                          yp = sheep.z;
                                          rotationGoal = 0;
                                          Tweener.addTween(sheep, { x:xp, z:yp, time:2, onComplete: randomize } );
                                  } else if (downdown) {
                                          xp = sheep.x - speed;
                                          yp = sheep.z;
                                          rotationGoal = 180;
                                          Tweener.addTween(sheep, { x:xp, z:yp, time:2, onComplete: randomize } );
                                  } else if (leftdown) {
                                          xp = sheep.x;
                                          yp = sheep.z + speed;
                                          rotationGoal = 270;
                                          Tweener.addTween(sheep, { x:xp, z:yp, time:2, onComplete: randomize } );
                                  } else if (rightdown) {
                                          xp = sheep.x;
                                          yp = sheep.z - speed;
                                          rotationGoal = 90;
                                          Tweener.addTween(sheep, { x:xp, z:yp, time:2, onComplete: randomize } );
                                  }
                          }
          
                          if (rotationPosition % 360 != rotationGoal) { //this piece of code rotates the player left or right, depending on which route is shorter. 
                                  if((((rotationBase % 360 - rotationGoal) < 0) && ((rotationBase % 360 - rotationGoal) > -181)) || ((rotationBase % 360 - rotationGoal) > 180)) {
                                          sheep.rotationY = sheep.rotationY + 15;
                                          rotationPosition = rotationPosition + 15;
                                  } else {
                                          sheep.rotationY = sheep.rotationY - 15;
                                          rotationPosition = rotationPosition - 15;
                                  }
                          } else {
                                  rotationBase = rotationPosition % 360; 
                          }
                          
                          if (updown || downdown || leftdown || rightdown) { // this piece of code animates the sheep if it's walking
                                  if(standing) {
                                          sheep.play();
                                          standing = false;
                                  }
                          } else {
                                  sheep.stop();
                                  standing = true;
                          }
                          
                          Tweener.addTween(default_camera, { x:sheep.x - 800, z:sheep.z, time:2, onComplete: randomize } )
                          default_camera.lookAt(sheep);
              
              rotationPosition = rotationPosition % 360;
                          if (rotationPosition < 0) {
                                  rotationPosition = rotationPosition + 360;
                          }
                  }
          }
  }