我遇到AS3问题。我试图让我放在数组中的项目有一个动态名称（例如lines [k]），这样当我想稍后调用它们时我可以通过它们的号码调用它们而不是全部调用它们当时
我在网站上找到了一些带有动态数组名称的教程，但我不确定如何将它们放入代码中，因为我不断收到错误。
目前这是我的代码：
var numPoints:Number = 0; // Number of points placed.
// No dragging will work until all 7 points are placed.
// Set max & min stage coordinates that the points can be dragged, and make the point diameters settable.
var xMax:Number = 700;
var xMin:Number = 5;
var yMax:Number = 500;
var yMin:Number = 5;
var o = 0;
var circleWidth:Number = 5;
// Boolean variables to indicate that dragging is happening so that the appropriate point follows the mouse
// on the MOUSE_MOVE event.
var isDragging1:Boolean = false;
var isDragging2:Boolean = false;
var isDragging3:Boolean = false;
var isDragging4:Boolean = false;
var isDragging5:Boolean = false;
var isDragging6:Boolean = false;
var isDragging7:Boolean = false;
// The drawBoard is a rectangle on which the triangle will be drawn. Colors are settable here. To change size,
// change the variables xMin, xMax, yMin, yMax above.
var drawBoard:Sprite = new Sprite();
drawBoard.graphics.lineStyle(1, 0x000000);
drawBoard.graphics.beginFill(0xCCCCCC);
drawBoard.graphics.drawRect(0, 0, xMax - xMin, yMax - yMin);
drawBoard.graphics.endFill();
drawBoard.x = xMin;
drawBoard.y = yMin;
// Array (Where "lines goes into")
var q:int = 0;
var shapeArray:Array/* of flash.display.Shape */ = [] /* of flash.display.Shape */;
var lines:Shape = new Shape();
// Add a default drop shadow filter to the drawBoard
drawBoard.filters = [ new DropShadowFilter() ];
// This rectangle will listen for mouse clicks in order to construct the three vertices of the triangle.
drawBoard.addEventListener(MouseEvent.CLICK, placePoint);
// Put on the stage the board on which the triangle will be drawn.
stage.addChild(drawBoard);
// The filled triangle consists of three lines drawn between the points. It is updated on MOUSE_MOVE once
// dragging starts.
drawBoard.addChild(lines);
// The stage will listen for events involving dragging so that the dragging will continue to work even after
// the mouse has rolled off of the drawBoard region.
stage.addEventListener(MouseEvent.MOUSE_MOVE, mouseUpdate);
stage.addEventListener(MouseEvent.MOUSE_UP, stopDragging);
// Button 2 (Left)
bttn_add.addEventListener(MouseEvent.CLICK, toevoegen);
// Button 3 (Middle)
bttn_show.addEventListener(MouseEvent.CLICK, showit);
// adding shape to array
function toevoegen(e:Event):void
{
// adding
shapeArray.push( lines );
numPoints = 0;
trace("Done pushing")
}
// Shape show
function showit(e:Event):void
{
trace(shapeArray.length);
if (!shapeArray || shapeArray.length == 0){
// shapeArray.push( lines );
trace("array is leeg")
return; // nothing to do here
}
const lines:Shape = shapeArray[o] as Shape;
if (lines && ! lines.parent) {
o++;
trace ("tracer"+ o);
}// show it
drawBoard.addChild(lines)
//shapeArray.push( lines );
numPoints = 0;
trace()
}
// We add 7 points to the stage but we do not add the graphics yet. We do specify listeners
// at this time so when they are all placed, we will be able to drag them.
var point1:Sprite = new Sprite();
point1.addEventListener(MouseEvent.MOUSE_DOWN, startDragging1);
drawBoard.addChild(point1);
var point2:Sprite = new Sprite();
point2.addEventListener(MouseEvent.MOUSE_DOWN, startDragging2);
drawBoard.addChild(point2);
var point3:Sprite = new Sprite();
point3.addEventListener(MouseEvent.MOUSE_DOWN, startDragging3);
drawBoard.addChild(point3);
var point4:Sprite = new Sprite();
point4.addEventListener(MouseEvent.MOUSE_DOWN, startDragging4);
drawBoard.addChild(point4);
var point5:Sprite = new Sprite();
point5.addEventListener(MouseEvent.MOUSE_DOWN, startDragging5);
drawBoard.addChild(point5);
var point6:Sprite = new Sprite();
point6.addEventListener(MouseEvent.MOUSE_DOWN, startDragging6);
drawBoard.addChild(point6);
var point7:Sprite = new Sprite();
point7.addEventListener(MouseEvent.MOUSE_DOWN, startDragging7);
drawBoard.addChild(point7);
// The reset button will stop all dragging, remove all children of drawBoard, and set numPoints back to 0.
btnReset.addEventListener(MouseEvent.CLICK, reset);
function reset(evt:MouseEvent):void {
var i:Number;
var n:Number = drawBoard.numChildren;
isDragging1 = false;
isDragging2 = false;
isDragging3 = false;
isDragging4 = false;
isDragging5 = false;
isDragging6 = false;
isDragging7 = false;
point1.graphics.clear();
point2.graphics.clear();
point3.graphics.clear();
point4.graphics.clear();
point5.graphics.clear();
point6.graphics.clear();
point7.graphics.clear();
/*
drawBoard.removeChild(point1);
drawBoard.removeChild(point2);
drawBoard.removeChild(point3);
drawBoard.removeChild(point4);
drawBoard.removeChild(point5);
drawBoard.removeChild(point6);
drawBoard.removeChild(point7);
*/
//lines.graphics.clear();
drawBoard.removeChild(lines);
numPoints = 0;
trace(numPoints);
}
// The next function is executed when the mouse is moved. Note that if all points are not placed and nothing
// is being dragged, this function does nothing.
function mouseUpdate(evt:MouseEvent):void {
if (numPoints == 7) {
if (isDragging1) {
point1.x = goodX(evt.stageX); // Set x- & y-coordinates. See below for definition of
point1.y = goodY(evt.stageY); // functions goodX & goodY
//lines.graphics.clear(); // Remove lines shape and redraw it
drawLines(); // with updated coordinates.
}
if (isDragging2) {
point2.x = goodX(evt.stageX);
point2.y = goodY(evt.stageY);
//lines.graphics.clear();
drawLines();
}
if (isDragging3) {
point3.x = goodX(evt.stageX);
point3.y = goodY(evt.stageY);
//lines.graphics.clear();
drawLines();
}
if (isDragging4) {
point4.x = goodX(evt.stageX);
point4.y = goodY(evt.stageY);
//lines.graphics.clear();
drawLines();
}
if (isDragging5) {
point5.x = goodX(evt.stageX);
point5.y = goodY(evt.stageY);
//lines.graphics.clear();
drawLines();
}
if (isDragging6) {
point6.x = goodX(evt.stageX);
point6.y = goodY(evt.stageY);
//lines.graphics.clear();
drawLines();
}
if (isDragging7) {
point7.x = goodX(evt.stageX);
point7.y = goodY(evt.stageY);
//lines.graphics.clear();
drawLines();
}
evt.updateAfterEvent();
}
}
/* This function chooses the appropriate x-coordinate for a dragged point.
If thisX is in the draggable region, then we return it. Otherwise, we return the max or min x value,
depending on which side of the draggable region thisX is on.
*/
function goodX(thisX:Number):Number {
if (thisX < xMin) {
return (xMin);
}
if (thisX > (xMax - circleWidth)) {
return (xMax - circleWidth);
}
return (thisX);
}
// This function chooses the appropriate y-coordinate for a dragged point in a manner similar to the previous function.
function goodY(thisY:Number):Number {
if (thisY < yMin) {
return (yMin);
}
if (thisY > (yMax - circleWidth)) {
return (yMax - circleWidth);
}
return thisY;
}
// This function manages the placement of points until all 7 points are placed.
function placePoint(evt:MouseEvent):void {
//var point = new Sprite();
//array.push(point);
if (numPoints == 0) {
point1.graphics.beginFill(0x7777FF);
point1.graphics.drawCircle(0, 0, circleWidth/2);
point1.graphics.endFill();
point1.filters = [ new DropShadowFilter() ];
point1.x = drawBoard.mouseX;
point1.y = drawBoard.mouseY;
numPoints = 1;
}
else if(numPoints == 1) {
point2.graphics.beginFill(0x7777FF);
point2.graphics.drawCircle(0, 0, circleWidth/2);
point2.graphics.endFill();
point2.filters = [ new DropShadowFilter() ];
point2.x = drawBoard.mouseX;
point2.y = drawBoard.mouseY;
numPoints = 2;
}
else if (numPoints == 2) {
point3.graphics.beginFill(0x7777FF);
point3.graphics.drawCircle(0, 0, circleWidth/2);
point3.graphics.endFill();
point3.filters = [ new DropShadowFilter() ];
point3.x = drawBoard.mouseX;
point3.y = drawBoard.mouseY;
numPoints = 3;
//lines.graphics.clear();
//drawBoard.removeChild(lines);
}
else if (numPoints == 3) {
point4.graphics.beginFill(0x7777FF);
point4.graphics.drawCircle(0, 0, circleWidth/2);
point4.graphics.endFill();
point4.filters = [ new DropShadowFilter() ];
point4.x = drawBoard.mouseX;
point4.y = drawBoard.mouseY;
numPoints = 4;
//lines.graphics.clear();
//drawBoard.removeChild(lines);
}
else if (numPoints == 4) {
point5.graphics.beginFill(0x7777FF);
point5.graphics.drawCircle(0, 0, circleWidth/2);
point5.graphics.endFill();
point5.filters = [ new DropShadowFilter() ];
point5.x = drawBoard.mouseX;
point5.y = drawBoard.mouseY;
numPoints = 5;
//lines.graphics.clear();
//drawBoard.removeChild(lines);
}
else if (numPoints == 5) {
point6.graphics.beginFill(0x7777FF);
point6.graphics.drawCircle(0, 0, circleWidth/2);
point6.graphics.endFill();
point6.filters = [ new DropShadowFilter() ];
point6.x = drawBoard.mouseX;
point6.y = drawBoard.mouseY;
numPoints = 6;
//lines.graphics.clear();
//drawBoard.removeChild(lines);
}
else if (numPoints == 6) {
point7.graphics.beginFill(0x7777FF);
point7.graphics.drawCircle(0, 0, circleWidth/2);
point7.graphics.endFill();
point7.filters = [ new DropShadowFilter() ];
point7.x = drawBoard.mouseX;
point7.y = drawBoard.mouseY;
numPoints = 7;
q++;
//shapeArray.push( lines );
//lines.graphics.clear();
//drawBoard.removeChild(lines);
drawLines();
//verplaatsen();
trace(numPoints);
}
}
// Draws the 7 lines between the points with appropriate fill and adds a drop shadow.
function drawLines():void {
lines.graphics.lineStyle(1, 0xFF0000);
lines.graphics.beginFill(0xFF7777);
lines.graphics.moveTo(point1.x, point1.y);
lines.graphics.lineTo(point2.x, point2.y);
lines.graphics.lineTo(point3.x, point3.y);
lines.graphics.lineTo(point4.x, point4.y);
lines.graphics.lineTo(point5.x, point5.y);
lines.graphics.lineTo(point6.x, point6.y);
lines.graphics.lineTo(point7.x, point7.y);
lines.graphics.lineTo(point1.x, point1.y);
lines.graphics.endFill();
lines.filters = [ new DropShadowFilter() ];
trace(lines)
trace ("geval"+ o)
}
// The next functions "turn on" dragging for the point that is clicked, as long as all 7 points have
// been placed.
function startDragging1(evt:MouseEvent):void {
if (numPoints == 7) {
isDragging1 = true;
}
}
function startDragging2(evt:MouseEvent):void {
if (numPoints == 7) {
isDragging2 = true;
}
}
function startDragging3(evt:MouseEvent):void {
if (numPoints == 7) {
isDragging3 = true;
}
}
function startDragging4(evt:MouseEvent):void {
if (numPoints == 7) {
isDragging4 = true;
}
}
function startDragging5(evt:MouseEvent):void {
if (numPoints == 7) {
isDragging5 = true;
}
}
function startDragging6(evt:MouseEvent):void {
if (numPoints == 7) {
isDragging6 = true;
}
}
function startDragging7(evt:MouseEvent):void {
if (numPoints == 7) {
isDragging7 = true;
}
}
// Turns off dragging. This function is called when the mouse button is released anywhere on the stage.
function stopDragging(evt:MouseEvent):void {
if (numPoints == 7) {
isDragging1 = false;
isDragging2 = false;
isDragging3 = false;
isDragging4 = false;
isDragging5 = false;
isDragging6 = false;
isDragging7 = false;
}
}
/*
function verplaatsen():void{
lines.x = 0;
lines.x = 100;
lines.y = 300;
}*/
我道歉，如果我的代码混乱/草率我一整天都在尝试，现在有点睡眠不足。
任何帮助都会非常苛刻
（作为一方不是：他们是否可以快速将这4个空间放在这个网站上创建代码块？）
答案 0 :(得分：0)
你应该真正研究数组是如何工作的，从你的代码我可以看到你只是使用不同的变量来保存所有精灵并检查函数内的不同变量，如isDraging1,2,3,4,5。
以下是一些可以帮助您入门的代码。
public var mySprites:Array = [];
public function init():void
{
for (var i:int = 0; i<10; ++i)
{
createSprite();
}
}
public function createSprite():void
{
var sprite:Sprite = new Sprite();
sprite.addEventListener(MouseEvent.MOUSE_CLICK,onSpriteClicked);
addChild(sprite);
mySprites.push(sprite);
}
public function onSpriteClicked(e:MouseEvent):void
{
trace("You clicked sprite : "+mySprites.indexOf(e.target as Sprite));
// you can use the sprite here
var clickedSprite:Sprite = e.target as Sprite;
if(clickedSprite)
{
//do something with sprite
}
}