え〜〜い！いっそうのこと、ブロック崩しを作れ！

きっと長くなるなぁ〜！そして、これは作りかけ＆暇なときにやります！きっと

//@cc_on
//___
//計算時間のかかる sin, cos をテーブルにして関数化
var Math2 = new Function ( ) {
  var sinTable = [ ];
  var cosTable = [ ];
  var radian = Math.PI / 180;
  var d, t;
  
  for( d = 0; d < 360; d++ ) {
    t = d * radian;
    sinTable[ d ] = Math.sin( t );
    cosTable[ d ] = Math.cos( t );
  }
  
  this.sinDegree = function ( deg ) {
    return sinTable[ deg % 360 |0 ];
  };
  
  this.cosDegree = function ( deg ) {
    return cosTable[ deg % 360 | 0 ];
  };
  
  this.randomInt = function ( num ) {
    return Math.random() * num | 0;
  };
  
};


//___

//移動物体を定義する
var MovingParts = new Function;

//移動部品の状態を設定
MovingParts.prototype.set = function ( position, vctor, timing ) {
  this.position = position || { x: 0, y: 0 };
  this.vector = vector || { v: 0, s: 0 };
  this.timing = timing || 25;
  this.scale = this.timing / 10;
};


//状態を返す
MovingParts.prototype.get = function ( ) {
  return { position: this.position, vector: this.vector };
};

//物体に運動を与える
MovingParts.prototype.attack = function ( vector ) {
  var v = this.vector;

  if( 0 == v.s |0 )
    this.start();

  else {
    this.vector.s += vector.s || 0;

    if( 0 < v.v - vector.v )
      this.vector.v += 180 + ( 90 - v.v + vector.v ) * 2;
    else
      this.vector.v += 180 - ( 90 - v.v + vector.v ) * 2;
  }

};

MovingParts.prototype.start = function ( ) {
  if( this.tmid === null )
    this.tmid = setInterval(
      (function ( that ) {
        return function ( ) { that.move(); };
      })( this ), this.timing );
};

MovingParts.prototype.stop = function ( ) {
  clearInterval( this.tmid );
  this.tmid = null;
};

MovingParts.prototype.move = (function( sin, cos ) {
  return function ( ) {
    if( 0 == this.vector.s | 0 ) {
      this.stop();
      this.vector.s = 0;
    } else {
      this.position.x += sin( this.vector.v ) * this.vector.s * this.scale;
      this.position.y += cos( this.vector.v ) * this.vector.s * this.scale;
    }
    return this.position;
  };
})( Math2.sinDegree, Math2.cosDegree, Math2.randomInt )


//___
var Coart = function( x, y ) {
  this.x = x;
  this.y = y;
};

Coart.prototype.isOutSide = function ( p ) {
  if( p.y < 0 ) return 1;
  if( this.x < p.x ) return 2;
  if( this.y < p.y ) return 3;
  if( p.x < 0 ) return 4;
  return 0;
};

//___
//ラケットもボールも「動く物」と考えてしまえば、
動くところだけ、付け足せばいいのかも？！

var Ball = new Function;

Ball.prototype = new MovingParts;
Ball.prototype.constructor = Ball;

//___
var Racket = new Function;

Racket.prototype = new MovingParts;
Racket.prototype.constructor = Racket;