by lieutar
2010-12-30 [2010/12/30 15:12:55]
はてなハイクで実行すると、星を打ちあう簡単な対戦型シューティングが初まる。カーソルキーで移動、Zで星発射。ESCで終了
/*
* @title haiku-shoot
* @description はてなハイクで自アイコンを操作します(つくりかけ。なげだすかも)
* @include http://*
* @license MIT License
* @require
*/
(function(){
var Z_INDEX_USER = 65536;
var Z_INDEX_BULLET = 65535;
var Bullet = (function(x,y){
this.x=x;
this.y=y;
});
Bullet.prototype = {
fire: function(x,y){
var img = document.createElement('img');
img.src = 'http://s.hatena.ne.jp/images/star.gif';
document.body.appendChild(img);
img.style.position = 'fixed';
var sx = this.x;
var sy = this.y;
setTimeout(function(){
img.style.top = (sy - img.clientHeight / 2) + 'px';
img.style.left = (sx - img.clientWidth / 2) + 'px';
sx += x;
sy += y;
if(sx > 0 && sx < window.innerWidth && sy > 0 && sy < window.innerHeight){
setTimeout(arguments.callee, 10);
}else{
img.parentNode.removeChild(img);
}
},10);
}
};
var user = (function(){
var name = document.evaluate('.//p[@class="username"]/a/text()',
document.body,
null,
XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,
null).snapshotItem(0).data;
var img = new Image();
img.src = (
'http://www.st-hatena.com/users/' + name.substring(0,2) + '/' + name + '/profile.gif'
);
document.body.appendChild(img);
img.style.zIndex = String(Z_INDEX_USER);
img.style.position = 'fixed';
img.style.top = (window.innerHeight - img.clientHeight - 10) + 'px';
img.style.left = Math.floor((window.innerWidth - img.clientWidth ) / 2) + 'px';
return {
name: name,
icon: img,
speed: 5,
shot: function(){
var bullet = new Bullet(Math.floor(img.offsetLeft + img.clientWidth /
2),img.offsetTop);
bullet.fire(0,-20);
},
moving: false,
_move_k: {n:0,s:0,w:0,e:0},
_move_x: 0,
_move_y: 0,
stop: function(){
if(!this.moving) return;
clearTimeout(this.moving);
this.moving = null;
},
move: function(dir){
var _move_k = this._move_k;
switch(dir){
case 'n':
_move_k.n = 1;
if(_move_k.s > 0) _move_k.s = 2;
break;
case 'N':
_move_k.n = 0;
if(_move_k.s > 0) _move_k.s = 1;
break;
case 's':
_move_k.s = 1;
if(_move_k.n > 0) _move_k.n = 2;
break;
case 'S':
_move_k.s = 0;
if(_move_k.n > 0) _move_k.n = 1;
break;
case 'w':
_move_k.w = 1;
if(_move_k.e > 0) _move_k.e = 2;
break;
case 'W':
_move_k.w = 0;
if(_move_k.e > 0) _move_k.e = 1;
break;
case 'e':
_move_k.e = 1;
if(_move_k.w > 0) _move_k.w = 2;
break;
case 'E':
_move_k.e = 0;
if(_move_k.w > 0) _move_k.w = 1;
}
var x = 0;
var y = 0;
if(_move_k.s != _move_k.n){
y = _move_k.s > _move_k.n ? 1 : -1;
}
if(_move_k.w != _move_k.e){
x = _move_k.e > _move_k.w ? 1 : -1;
}
this._move_x = x;
this._move_y = y;
if(x == 0 && y == 0){
this.stop();
return;
}
if(this.moving) return;
var self = this;
(function(){
img.style.top = (img.offsetTop + self.speed * self._move_y) + 'px';
img.style.left = (img.offsetLeft + self.speed * self._move_x) + 'px';
self.moving = setTimeout(arguments.callee, 10);
})();
}
};
})();
window.addEventListener(
'keydown', function(e){
e.stopPropagation();
// console.log(e.keyCode);
switch(e.keyCode){
case 37: //LEFT
user.move('w');
break;
case 38: //UP
user.move('n');
break;
case 39: //RIGHT
user.move('e');
break;
case 40: //DOWN
user.move('s');
break;
case 90: // Z
user.shot();
}
}, true
);
window.addEventListener(
'keyup', function(e){
e.stopPropagation();
switch(e.keyCode){
case 37: //LEFT
user.move('W');
break;
case 38: //UP
user.move('N');
break;
case 39: //RIGHT
user.move('E');
break;
case 40: //DOWN
user.move('S');
break;
}
}, true
);
})();