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Tetris
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<!doctype html><html><head><meta charset="UTF-8"><title>Tetris</title></head> | |
<body><pre></pre><script> | |
var ttrs = { board: 0, block: 3, position: 32, offset: 0, layer: 0, speed: 1000, size: 32, | |
play: function(){ | |
this.position += this.offset; | |
if ( this.bottom() || this.bang() ) { | |
this.position -= this.offset; | |
this.board = this.merge(); | |
this.board = this.clear(); | |
this.block = this.random(); | |
this.position = this.size; | |
} else { | |
this.layer = this.merge(); | |
} | |
this.render(); | |
}, | |
bottom: function(){ return this.position < 0 }, | |
bang: function(){ return this.board & this.block << this.position }, | |
merge: function(){ return this.board | this.block << this.position }, | |
clear: function(){ return parseInt( this.board.toString( this.size ).replace(/v/,''), this.size ) }, | |
random: function(){ return new Date%2?1:3 }, | |
render: function(){ | |
var txt = '', b = this.binary( this.layer ); | |
for(var i=1; i<31;i++){ | |
txt += b[i] == '1' ? '#' : '.'; | |
if(i%5 == 0) txt+= '\n'; | |
} | |
document.querySelector('pre').innerHTML = txt; | |
}, | |
binary: function(l){ return ( 1<<30 | + l ).toString(2) }, | |
loop: function(){ ttrs.play(); setTimeout(ttrs.loop, ttrs.speed) }, | |
key: function(e){ | |
switch (e.keyCode){ | |
case 37: ttrs.offset = 1; break; //left | |
case 39: ttrs.offset = -1; break; //right | |
case 40: ttrs.offset = -5; break; //down | |
} | |
ttrs.play(); | |
//ttrs.log(); | |
}, | |
log: function(){ | |
console.log('layout : '+this.layout); | |
console.log('display : '+this.binary(this.layout)); | |
console.log('offset : '+this.offset); | |
console.log('position: '+this.position); | |
} | |
}; | |
onkeydown = ttrs.key; | |
ttrs.play(); | |
</script><!--<script src="sunit.js"></script><script src="test.js"></script>--> | |
<!-- thanks to https://gist.github.com/1672254 --> | |
<style>*{font:14px monospace;}</style></body></html> |
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