■■■精確計時
我們設(shè)定了時間為 60 秒，然后通過 setInterval 來定期（每1000milliseconds）觸發(fā)一個函數(shù) runTimer。
function runTimer 用來計時，當(dāng)時間到了以后，轉(zhuǎn)去執(zhí)行 outThere。
function outThere 用來處理時間到了以后的動作，不要忘記 clearInterval(intervalID)，停止計時。
var time:Number = 60;
var intervalID:Number;
intervalID = setInterval(runTimer, 1000);
function runTimer() {
time--;
trace(time);
if (time == 0) {
outThere();
}
}
function outThere() {
// blah blah blah
clearInterval(intervalID);
}
■■■找到目前最小的一個可用的深度 Depth（來自國外）
針對 Flash Player 6 的：
availTopDepth = function () {
var allDepths = [];
for (var z in _root) {
if (_root[z] instanceof Button || _root[z] instanceof MovieClip || _root[z] instanceof TextField) {
allDepths.push(_root[z].getDepth());
}
}
if (allDepths.length != 0) {
sortAll = function (a, b) { if (ab) {return 1;} else {return 0;}};
allDepths.sort(sortAll);
return (parseInt(allDepths[allDepths.length-1])+1);
}
};
trace(_root.availTopDepth());
放置一個 MovieClip 在 Stage，再執(zhí)行這段 Action 就會得到最近的一個可用深度。我們也可以用這個來創(chuàng)建絕對不
會出問題的 MovieClip，比如：
_root.createEmptyMovieClip("mc_name", availTopDepth());
getNextHighestDepth() 以及 getInstanceAtDepth(depth)是 for player 7 的。
■■■鼠標(biāo)消隱
鼠標(biāo)消隱之后，右健彈出菜單，鼠標(biāo)就又出現(xiàn)了，并且一直保留著~
完整的解決方法是：在 左健抬起、右健第二次抬起、回車鍵抬起的時候再次消隱鼠標(biāo)。
完整的方法比較復(fù)雜，下面是一個簡單的解決方法，可以解決絕大多數(shù)的問題：
onEnterFrame=function(){
if(Key.isDown(1)|| Key.isDown(Key.ENTER)){
Mouse.hide();
}
}
■■■我常用的一個加速度移動的代碼
//以下代碼放到主場景第一幀
stop();
_global.a = 5;
//移動加速度,越大越慢
_global.click_x = 0;
//用來記錄點擊鼠標(biāo)的位置
_global.click_y = 0;
_root.onMouseDown = function() {
_global.click_x = _root._xmouse;
_global.click_y = _root._ymouse;
//me是受控mc的instance name
me.onEnterFrame = function() {
if (Math.abs(_global.click_x-me._x)<2 && Math.abs(_global.click_y-me._y)<2) {
//如果已經(jīng)基本移到了鼠標(biāo)點過的位置就取消這個事件句柄的響應(yīng)程序
delete (this.onEnterFrame);
return;
} else {
//控制移動
me._x += (_global.click_x-me._x)/_global.a;
me._y += (_global.click_y-me._y)/_global.a;
}
};
};
//////以下部分可選
//a_v是個可以輸入的文本框,用來輸入加速度,即可以自定義速度,方便調(diào)試
a_v.onChanged = function() {
if (a_v.text == "" || Number(a_v.text)>1000 || Number(a_v.text)<0) {
//default value
a_v.text = 5;
} else {
_global.a = Number(a_v.text) ? Number(a_v.text) : 5;
//trace(_global.a);
}
};
■■■隨機輸出1到100而不從復(fù)的語句~~~
seq = new Array(100);
pArray = new Array(100);
function makeRandom() {
for (i=1; i<=100; i++) {
seq[i] = "A";
}
}
function mRandom() {
while (true) {
n = int(random(100))+1;
if (seq[n] == "A") {
seq[n] = "0";
break;
}
}
return (n);
}
function rArray() {
for (i=1; i<=100; i++) {
pArray[i] = mRandom();
trace(pArray[i]);
}
}
stop();
■■■偷梁換柱～～～
我們可以用這樣一個技巧，在某些函數(shù)外部加一些東西而不需要了解函數(shù)的代碼～～
比如，假如當(dāng)前有很多mc 覆蓋了onEnterFrame函數(shù)，我們可以這樣了解那些在_root下的mc 的onEnterFrame函
數(shù)是以什么順序執(zhí)行的：
代碼:
for(var i in _root){
if(_root[i].onEnterFrame != null){//如果這個Object實現(xiàn)了onEnterFrame接口的話
_root[i].oldFunc = _root[i].onEnterFrame;//首先保存原來的onEnterFrame的句柄
_root[i].onEnterFrame = function(){//然后開始替換了～～加上一層殼～～
trace(this+ ": onEnterFrame Called.");
this.oldFunc();//我們用保留的句柄調(diào)用原來的函數(shù)
trace(this+ ": onEnterFrame Returned.");
}
}
}
如果要取消這些附加的操作：
代碼:
for(var i in _root){
if(_root[i].oldFunc!= null){//如果發(fā)現(xiàn)改過得痕跡
_root[i].onEnterFrame = _root[i].oldFunc;
delete(oldFunc);
}
}
呵呵這些操作的關(guān)鍵在于 flash里面的引用機制:
所有函數(shù)名都是引用，而函數(shù)本身是浮在數(shù)據(jù)的海洋里面的。如果沒有任何變量引用他，他就會被回收。如果有，
他就不會被回收。所以有著樣一個有趣的事情：delete函數(shù)不會刪掉任何東西，除了要求刪掉的那個名字：（和java
機制相似，而和C不同）
a= function(){trace("Function a called");}
b=a;
delete(a);//除了a這個名字被刪掉以外，沒有任何事情發(fā)生
b();
函數(shù)通過this得到其調(diào)用者的實例。
■■■MovieClipPlus.as
定義了一些簡單的MC操作
//畫點：由于flash沒有畫點，那我們就畫短線
MovieClip.prototype.point = OxMovieClipPoint;
function OxMovieClipPoint(x, y) {
this.moveTo(x, y);
this.lineTo(x+1, y);
}
//畫矩形,左上角x1,y1 右下角x2,y2, 顏色rgb， 不透明度alpha
MovieClip.prototype.rect = OxMovieClipRect;
function OxMovieClipRect(x1, y1, x2, y2, rgb, alpha) {
this.beginFill(rgb, alpha);
this.moveTo(x1, y1);
this.lineTo(x1, y2);
this.lineTo(x2, y2);
this.lineTo(x2, y1);
this.lineTo(x1, y1);
this.endFill();
}
//畫圓:這么bt的冬冬當(dāng)然不是我寫的，作者素Jody Keating
//圓心x,y ，半徑r
MovieClip.prototype.circle = OxMovieClipCircle;
function OxMovieClipCircle(x, y, r) {
var a = r*0.414213562;
var b = r*0.707106781;
this.moveTo(x+r, y);
this.curveTo(x+r, y-a, x+b, y-b);
this.curveTo(x+a, y-r, x, y-r);
this.curveTo(x-a, y-r, x-b, y-b);
this.curveTo(x-r, y-a, x-r, y);
this.curveTo(x-r, y+a, x-b, y+b);
this.curveTo(x-a, y+r, x, y+r);
this.curveTo(x+a, y+r, x+b, y+b);
this.curveTo(x+r, y+a, x+r, y);
}
■■■兩點間的直線移動
var s = 15;
_root.onMouseDown = function() {
var oldM_x = _root._xmouse;
var oldM_y = _root._ymouse;
ax = aa._x;
ay = aa._y;
dis = Math.sqrt((oldM_x-ax)*(oldM_x-ax)+(oldM_y-ay)*(oldM_y-ay));
xa = (oldM_x-ax)/dis;
ya = (oldM_y-ay)/dis;
amove();
};
function amove() {
onEnterFrame = function () {
aa._x += s*xa;
aa._y += s*ya;
if (Math.sqrt((aa._x-ax)*(aa._x-ax)+(aa._y-ay)*(aa._y-ay))>dis) {
delete onEnterFrame;
}
};
}
■■■計算兩個對象之間/兩點之間的距離(注冊點)
function getDistanceOf(target1, target2, x2, y2) {
if (arguments.length == 4) {
dx = x2-target1;
dy = y2-target2;
} else if (arguments.length == 2) {
dx = target2._x-target1._x;
dy = target2._y-target1._y;
}
return Math.sqrt(dx*dx+dy*dy);
}
//Arguments 對象是一個數(shù)組，其中包含作為參數(shù)傳遞給任何函數(shù)的值。每次在動作腳本中調(diào)用函數(shù)時，都會為該函
數(shù)自動創(chuàng)建 Arguments 對象。同時還會創(chuàng)建一個局部變量 arguments，使您可引用 arguments 對象。
■■■讓播放的MC暫停一段時間
function pausePlay(sec) {
pfunc = function () {
this.play();
clearInterval(this.pint);
}
stop();
this.pint = setInterval(this, "pfunc", sec*1000);
}
//這樣調(diào)用.sec是暫停的時間,單位是秒.
pausePlay(2);
■■■onHitTest(target),自己寫的一個MC事件,當(dāng)該MC與指定的MC hitTest的時候觸發(fā)事件.其實也沒什么特別的地方,一樣也是用setInterval來實現(xiàn)
stop();
MovieClip.prototype.listen = function(target) {
if (this.isHiting == undefined) {
this.isHiting = this.hitTest(target);
}
if (this.hitTest(target)) {
if (this.isHiting == false) {
this.broadcastMessage("onHitTest", this, target);//廣播事件,給事件傳遞this和target兩個參數(shù)
}
this.isHiting = true;
} else {
this.isHiting = false;
}
};//為MovieClip添加域成員listen成員,用于監(jiān)視當(dāng)前對象與目標(biāo)是否碰撞
MovieClip.prototype.watch = function(target) {
this.timer = setInterval(this, "listen", 50, target);
};//以每50毫秒檢測一次的速度來檢測是否碰撞
MovieClip.prototype.unWatch = function() {
clearInterval(this.timer);
};//停止對對象的監(jiān)視
ASBroadcaster.initialize(MovieClip.prototype);//初始化MovieClip原型為事件源
//下面是調(diào)用的示例
//假設(shè)有兩個MovieClip,左邊ball,右邊wall,讓ball不斷往wall移動,同時監(jiān)視wall,一旦擊中觸發(fā)事件onHitTest
ball.onEnterFrame = function() {
this._x += 5;
};//讓ball不斷往右方移動工
myListener = new Object();
myListener.onHitTest = function(source,target){
trace("The " + source._name + " hit " + target._name + ".");
};
ball.addListener(myListener);//創(chuàng)建監(jiān)聽員并注冊給ball
ball.watch(wall);//讓ball監(jiān)視wall
■■■MD5 32位碼的FLASH算法
//-----------
function md5(s) {
return binl2hex(core_md5(str2binl(s), s.length*strsize));
}
function core_md5(x, len) {
x[len >> 5] = (x[len >> 5]) | (128 << len%32);
x[(((len+64) >>> 9) << 4)+14] = len;
var a = 1732584193;
var b = -271733879;
var c = -1732584194;
var d = 271733878;
var i = 0;
while (i var olda = a;
var oldb = b;
var oldc = c;
var oldd = d;
a = md5_ff(a, b, c, d, x[i+0], 7, -680876936);
d = md5_ff(d, a, b, c, x[i+1], 12, -389564586);
c = md5_ff(c, d, a, b, x[i+2], 17, 606105819);
b = md5_ff(b, c, d, a, x[i+3], 22, -1044525330);
a = md5_ff(a, b, c, d, x[i+4], 7, -176418897);
d = md5_ff(d, a, b, c, x[i+5], 12, 1200080426);
c = md5_ff(c, d, a, b, x[i+6], 17, -1473231341);
b = md5_ff(b, c, d, a, x[i+7], 22, -45705983);
a = md5_ff(a, b, c, d, x[i+8], 7, 1770035416);
d = md5_ff(d, a, b, c, x[i+9], 12, -1958414417);
c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
a = md5_ff(a, b, c, d, x[i+12], 7, 1804603682);
d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329);
a = md5_gg(a, b, c, d, x[i+1], 5, -165796510);
d = md5_gg(d, a, b, c, x[i+6], 9, -1069501632);
c = md5_gg(c, d, a, b, x[i+11], 14, 643717713);
b = md5_gg(b, c, d, a, x[i+0], 20, -373897302);
a = md5_gg(a, b, c, d, x[i+5], 5, -701558691);
d = md5_gg(d, a, b, c, x[i+10], 9, 38016083);
c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
b = md5_gg(b, c, d, a, x[i+4], 20, -405537848);
a = md5_gg(a, b, c, d, x[i+9], 5, 568446438);
d = md5_gg(d, a, b, c, x[i+14], 9, -1019803690);
c = md5_gg(c, d, a, b, x[i+3], 14, -187363961);
b = md5_gg(b, c, d, a, x[i+8], 20, 1163531501);
a = md5_gg(a, b, c, d, x[i+13], 5, -1444681467);
d = md5_gg(d, a, b, c, x[i+2], 9, -51403784);
c = md5_gg(c, d, a, b, x[i+7], 14, 1735328473);
b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);
a = md5_hh(a, b, c, d, x[i+5], 4, -378558);
d = md5_hh(d, a, b, c, x[i+8], 11, -2022574463);
c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562);
b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
a = md5_hh(a, b, c, d, x[i+1], 4, -1530992060);
d = md5_hh(d, a, b, c, x[i+4], 11, 1272893353);
c = md5_hh(c, d, a, b, x[i+7], 16, -155497632);
b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
a = md5_hh(a, b, c, d, x[i+13], 4, 681279174);
d = md5_hh(d, a, b, c, x[i+0], 11, -358537222);
c = md5_hh(c, d, a, b, x[i+3], 16, -722521979);
b = md5_hh(b, c, d, a, x[i+6], 23, 76029189);
a = md5_hh(a, b, c, d, x[i+9], 4, -640364487);
d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
c = md5_hh(c, d, a, b, x[i+15], 16, 530742520);
b = md5_hh(b, c, d, a, x[i+2], 23, -995338651);
a = md5_ii(a, b, c, d, x[i+0], 6, -198630844);
d = md5_ii(d, a, b, c, x[i+7], 10, 1126891415);
c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
b = md5_ii(b, c, d, a, x[i+5], 21, -57434055);
a = md5_ii(a, b, c, d, x[i+12], 6, 1700485571);
d = md5_ii(d, a, b, c, x[i+3], 10, -1894986606);
c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
b = md5_ii(b, c, d, a, x[i+1], 21, -2054922799);
a = md5_ii(a, b, c, d, x[i+8], 6, 1873313359);
d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
c = md5_ii(c, d, a, b, x[i+6], 15, -1560198380);
b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649);
a = md5_ii(a, b, c, d, x[i+4], 6, -145523070);
d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
c = md5_ii(c, d, a, b, x[i+2], 15, 718787259);
b = md5_ii(b, c, d, a, x[i+9], 21, -343485551);
a = safe_add(a, olda);
b = safe_add(b, oldb);
c = safe_add(c, oldc);
d = safe_add(d, oldd);
i = i+16;
}
return Array(a, b, c, d);
}
function md5_cmn(q, a, b, x, s, t) {
return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b);
}
function md5_ff(a, b, c, d, x, s, t) {
return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t) {
return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t) {
return md5_cmn((b ^ c) ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t) {
return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}
function safe_add(x, y) {
var lsw = (x & 65535)+(y & 65535);
var msw = ((x >> 16)+(y >> 16))+(lsw >> 16);
return (msw << 16) | (lsw & 65535);
}
function bit_rol(num, cnt) {
return (num << cnt) | (num >>> (32-cnt));
}
function str2binl(str) {
var bin = Array();
var mask = (1 << strsize)-1;
var i = 0;
while (i<(str.length*strsize)) {
bin[i >> 5] = (bin[i >> 5]) | ((str.charCodeAt(i/strsize) & mask) << i%32);
i = i+strsize;
}
return bin;
}
function binl2hex(binarray) {
if (hexcase) {
} else {
}
var hex_tab = "0123456789abcdef";
var str = "";
var i = 0;
while (i<(binarray.length*4)) {
str = str+(hex_tab.charAt(((binarray[i >> 2]) >> ((i%4*8)+4)) & 15)+hex_tab.charAt(((binarray[i
>> 2]) >> (i%4*8)) & 15));
i++;
}
return str;
}
var hexcase = 0;
var strsize = 8;
//--------以上不用修改，
b = md5("xx");
//xx可設(shè)為任意字符
s = b.toUpperCase();
//轉(zhuǎn)換成大寫
trace(b);
trace(s);
■■■發(fā)點緩動函數(shù)
Math.linearTween = function(t, b, c, d) {
return c*t/d+b;
};
//線性運動函數(shù)
Math.easeInQuad = function(t, b, c, d) {
return c*(t /= d)*t+b;
};
//二次緩入函數(shù)
Math.easeOutQuad = function(t, b, c, d) {
return -c*(t /= d)*(t-2)+b;
};
//二次緩出函數(shù)
Math.easeINOutQuad = function(t, b, c, d) {
if ((t /= d/2)<1) {
return c/2*t*t+b;
}
return -c/2*((--t)*(t-2)-1)+b;
};
//二次緩入緩出函數(shù)
Math.easeInCubic = function(t, b, c, d) {
return c*Math.pow(t/d, 3)+b;
};
//三次緩入函數(shù)
Math.easeOutCubic = function(t, b, c, d) {
return c*(Math.pow(t/d-1, 3)+1)+b;
};
//三次緩出函數(shù)
Math.easeINOutCubic = function(t, b, c, d) {
if ((t /= d/2)<1) {
return c/2*Math.pow(t, 3)+b;
}
return c/2*(Math.pow(t-2, 3)+2)+b;
};
//三次緩入緩出函數(shù)
Math.easeInQuart = function(t, b, c, d) {
return c*Math.pow(t/d, 4)+b;
};
//四次緩入函數(shù)
Math.easeOutQuart = function(t, b, c, d) {
return -c*(Math.pow(t/d-1, 4)-1)+b;
};
//四次緩出函數(shù)
Math.easeINOutQuart = function(t, b, c, d) {
if ((t /= d/2)<1) {
return c/2*Math.pow(t, 4)+b;
}
return -c/2*(Math.pow(t-2, 4)-2)+b;
};
//四次緩入緩出函數(shù)
Math.easeInQuint = function(t, b, c, d) {
return c*Math.pow(t/d, 5)+b;
};
//五次緩入函數(shù)
Math.easeOutQuint = function(t, b, c, d) {
return c*(Math.pow(t/d-1, 5)+1)+b;
};
//五次緩出函數(shù)
Math.easeINOutQuint = function(t, b, c, d) {
if ((t /= d/2)<1) {
return c/2*Math.pow(t, 5)+b;
}
return c/2*(Math.pow(t-2, 5)+2)+b;
};
//五次緩入緩出函數(shù)
Math.easeInSine = function(t, b, c, d) {
return c*(1-Math.cos(t/d*(Math.PI/2)))+b;
};
//正弦緩出函數(shù)
Math.easeOutSine = function(t, b, c, d) {
return c*Math.sin(t/d*(Math.PI/2))+b;
};
//正弦緩出函數(shù)
Math.easeINOutSine = function(t, b, c, d) {
return c/2*(1-Math.cos(Math.PI*t/d))+b;
};
//正弦緩入緩出函數(shù)
Math.easeInExpo = function(t, b, c, d) {
return c*Math.pow(2, 10*(t/d-1))+b;
};
//指數(shù)緩入函數(shù)
Math.easeOutExpo = function(t, b, c, d) {
return c*(-Math.pow(2, -10*t/d)+1)+b;
};
//指數(shù)緩出函數(shù)
Math.easeINOutExpo = function(t, b, c, d) {
if ((t /= d/2)<1) {
return c/2*Math.pow(2, 10*(t-1))+b;
}
return c/2*(-Math.pow(2, -10*--t)+2)+b;
};
//指數(shù)緩入緩出函數(shù)
Math.easeInCirc = function(t, b, c, d) {
return c*(1-Math.sqrt(1-(t /= d)*t))+b;
};
//圓形緩入函數(shù)
Math.easeOutCirc = function(t, b, c, d) {
return c*Math.sqrt(1-(t=t/d-1)*t)+b;
};
//圓形緩出函數(shù)
Math.easeINOutCirc = function(t, b, c, d) {
if ((t /= d/2)<1) {
return c/2*(1-Math.sqrt(1-t*t))+b;
}
return c/2*(Math.sqrt(1-(t -= 2)*t)+1)+b;
};
//圓形緩入緩出函數(shù)