매우 부드러운 키보드 제어(관성 있음)
]<script>
var keyCache = [];
var isCache = false;
var cacheNum = 0;
document.onkeydown = insertKey;
document.onkeyup = function(){if(!isCache && event.keyCode>=37&& event.keyCode<=40) keyCache.length = 0;}
function insertKey(){
var kc = event.keyCode;
if(kc>=37 && kc<=40){
if(kc!=keyCache[keyCache.length-1]){
keyCache.length = 0;
keyCache.push(kc,kc,kc,kc,kc,kc) //保证流畅多注入６个
isCache = true;
}
keyCache.push(kc);
}
}
window.setInterval("writeCache()", 50);
function writeCache(){
if(keyCache.length==0) return;
var kc = keyCache.shift();
switch(kc){
case 37: man.style.left = parseInt(man.style.left) - 5;break;
case 38: man.style.top = parseInt(man.style.top) - 5;break;
case 39: man.style.left = parseInt(man.style.left) + 5;break;
case 40: man.style.top = parseInt(man.style.top) + 5;break;
}
if(isCache) cacheNum++;
if(cacheNum == 5){
isCache = false;
cacheNum = 0;
}
}
</script>
