demo: www.jd85.net/labaji.html
最近做转职系统，需要一个抽奖拉霸机来随机获取职业相关的物品。这里是不是在快速运动中直接停下，而是在做减速运动。不过没有用到神马恶心的物理变加速运动公式，原理其实就两个容器来回切，然后逐帧减速最后停下。
主要靠状态来区分，状态，微妙的状态~~
1 package 2 { 3 import flash.display.MovieClip; 4 import flash.display.SimpleButton; 5 import flash.display.Sprite; 6 import flash.events.Event; 7 import flash.events.MouseEvent; 8 9 /** 10 * 从当前格子走到目标格子的走法 11 * 12 * 条件： 13 * 1，确保从当前格子走到目标格子中间的格子数不得低于LOWEST_ITEM_COUNT，不能出现急撒车; 14 * 2，确保在LOWEST_ITEM_COUNT这最后几个格子的运动过程中是在减速运动; 15 * 3，确保停在目标格子时的速度不得低于LOWEST_SPEED 16 * 17 * 收到目标格子的位置后就走到状态f 18 * 19 * 20 * 状态 21 * a: idle 22 * b: running 23 * c：就在这一圈内判断当到达目标item时停下 ，判断剩下要走的距离低于LOWEST_ITEM_COUNT时这时开始减速 24 * d: 走完这一圈，然后切到c,判断剩下要走的距离低于LOWEST_ITEM_COUNT时这时开始减速 25 * e: 走完这一圈，然后切到d,判断剩下要走的距离低于LOWEST_ITEM_COUNT时这时开始减速 26 * f: 走完这一圈，然后切到e,判断剩下要走的距离低于LOWEST_ITEM_COUNT时这时开始减速 27 * 28 * 29 * @author ding.jia 30 * 31 */ 32 public class RandomAwardMachine extends Sprite 33 { 34 //-------------------------------------------------------------------------- 35 // Constructor 36 //-------------------------------------------------------------------------- 37 public function RandomAwardMachine() 38 { 39 init(); 40 } 41 42 //-------------------------------------------------------------------------- 43 // Variables 44 //-------------------------------------------------------------------------- 45 46 //-------------------------------------------------------------------------- 47 // Propertise 48 //-------------------------------------------------------------------------- 49 private const ICON_WIDTH:int = 120; 50 private const ICON_HEIGHT:int = 113; 51 private const VERTICAL_GAP:int = 5; 52 53 private const STATUS_A:String = "a"; 54 private const STATUS_B:String = "b"; 55 private const STATUS_C:String = "c"; 56 private const STATUS_D:String = "d"; 57 private const STATUS_E:String = "e"; 58 private const STATUS_F:String = "f"; 59 60 // private const LOWEST_ITEM_COUNT:int = 28; 61 // private const LOWEST_SPEED:Number = 2; 62 // private const SPEED_subtract:Number = 1; 63 64 private const LOWEST_ITEM_COUNT:int = 17; 65 private const LOWEST_SPEED:Number = 2; 66 private const SPEED_subtract:Number = 1; 67 68 private var crtStatus:String; //当前机器运行状态 69 private var speed:Number; 70 private var iconList:Array; //所有要显示出的icon列表 71 private var iconListLength:int; 72 private var bgAsset:AwardBg; 73 private var bg:MovieClip; //背景 74 private var btn:SimpleButton; 75 private var containerMask:Sprite; //两个icon容器所在容器的遮罩 76 private var iconContainerA:Sprite; //第一张icon容器 77 private var iconContainerB:Sprite; //第二张icon容器 78 private var crtBottomIconContainer:Sprite; //当前处在下方的icon容器 79 private var container:Sprite; //上下两个icon所在的容器 80 private var crtLatestIconIndex:int; //当前最新的icon的数组索引值 81 private var targetIconIndex:int; 82 83 //-------------------------------------------------------------------------- 84 // Methods 85 //-------------------------------------------------------------------------- 86 public function receiveTargat(index:int):void 87 { 88 targetIconIndex = index; 89 // crtStatus = STATUS_F; 90 crtStatus = STATUS_E; 91 } 92 //-------------------------------------------------------------------------- 93 // Event Handler 94 //-------------------------------------------------------------------------- 95 protected function btnClickHandler(event:MouseEvent):void 96 { 97 readyRun(); 98 } 99 100 protected function efHandler(event:Event):void101 {102 switch(crtStatus)103 {104 case STATUS_B:105 doStatusB();106 break;107 case STATUS_C:108 doStatusC();109 break;110 case STATUS_D:111 doStatusD();112 break;113 case STATUS_E:114 doStatusE();115 break;116 // case STATUS_F:117 // doStatusF();118 break;119 default:120 break;121 }122 }123 124 //--------------------------------------------------------------------------125 // Private126 //--------------------------------------------------------------------------127 private function doStatusB():void128 {129 runUP();130 }131 132 //是否是走到了c段之后走到了目标,当由d切换到c时，可能正好就是在目标位置,但这时还未走到c段类133 private var specialC:int;134 private function doStatusC():void135 {136 //c段里目标点的距离137 var c:int = Math.abs(crtLatestIconIndex - targetIconIndex);138 if(c <= LOWEST_ITEM_COUNT)139 {140 slowDown();141 }142 143 if(crtLatestIconIndex != targetIconIndex)144 {145 specialC = 1;146 }147 148 //判断在这一圈内到达目标格子就停下149 if(crtLatestIconIndex == targetIconIndex)150 {151 if(specialC == 1)152 {153 if(crtBottomIconContainer.y <= 3)154 {155 finished(); 156 }157 else158 {159 runUP();160 }161 }162 else163 {164 runUP();165 }166 }167 else168 {169 runUP();170 }171 }172 private var finishRoundD:Boolean;173 private function doStatusD():void174 {175 if(crtLatestIconIndex == iconListLength - 1)176 {177 if(finishRoundD)178 {179 finishRoundD = false;180 crtStatus = STATUS_C;181 }182 else183 {184 runUP();185 }186 }187 else188 {189 finishRoundD = true;190 runUP();191 }192 193 //c段走到目标点的距离194 var c:int = targetIconIndex;195 //d段开始降速时到d端最后一张还剩下的距离196 var dLong:int = LOWEST_ITEM_COUNT - c;197 //求出d段减速点的索引198 var dIndex:int = iconListLength - dLong;199 if(crtLatestIconIndex >= dIndex)200 {201 slowDown();202 }203 }204 205 //在状态e下是否走完了一整圈后才开始算到达最后一张206 private var finishRoundE:Boolean;207 private function doStatusE():void208 {209 // //先要知道减速点是否在e段210 // var d:int = iconListLength;211 // var c:int = targetIconIndex;212 //213 //214 // //判断是否到达了减速点 e(未必满) + d（满） + c(未必满)215 // var e:int = iconListLength - crtLatestIconIndex;216 // var tempNum:int = e + d + c;217 // if(tempNum <= LOWEST_ITEM_COUNT)218 // {219 // slowDown();220 // }221 222 if(crtLatestIconIndex == iconListLength - 1)223 {224 if(finishRoundE)225 {226 finishRoundE = false;227 crtStatus = STATUS_D;228 }229 else230 {231 runUP();232 }233 }234 else235 {236 finishRoundE = true;237 runUP();238 }239 240 }241 242 // private function doStatusF():void243 // {244 // //判断是否到达了减速点 e(满) + d(满) + c(未必满) + f(未必满)245 // var e:int = iconListLength; 246 // var d:int = iconListLength;247 // var c:int = iconListLength - targetIconIndex;248 // var f:int = iconListLength - crtLatestIconIndex;249 // var tempNum:int = e + d + c + f;250 // if(tempNum <= LOWEST_ITEM_COUNT)251 // {252 // slowDown();253 // }254 //255 // if(crtLatestIconIndex == iconListLength - 1) //判断是否走完了一圈256 // {257 // crtStatus = STATUS_E;258 // }259 // else260 // {261 // runUP();262 // }263 // }264 265 private function slowDown():void266 {267 //第一次开始降速是的降速点索引,目标点索引，和当前状态268 trace("crtLatestIconIndex:",crtLatestIconIndex,"targetIconIndex:",targetIconIndex,"crtstatus:",crtStatus);269 270 speed -= SPEED_subtract;271 if(speed <= LOWEST_SPEED)272 {273 speed = LOWEST_SPEED;274 }275 trace("speed:",speed);276 }277 278 private function finished():void279 {280 crtBottomIconContainer.y = 0;281 removeEventListener(Event.ENTER_FRAME,efHandler);282 crtStatus = STATUS_A;283 specialC = 0;284 finishRoundD = false;285 finishRoundE = false;286 speed = 65;287 }288 289 private function runUP():void290 {291 if(iconContainerA.y < iconContainerB.y)292 {293 if(iconContainerB.y <= 0)294 {295 iconContainerA.y = iconContainerB.y + ICON_HEIGHT;296 crtBottomIconContainer = iconContainerA;297 addNextIcon();298 }299 }300 else if(iconContainerA.y > iconContainerB.y)301 {302 if(iconContainerA.y <= 0)303 {304 iconContainerB.y = iconContainerA.y + ICON_HEIGHT;305 crtBottomIconContainer = iconContainerB;306 addNextIcon();307 }308 }309 310 iconContainerA.y -= speed;311 iconContainerB.y -= speed;312 }313 314 private function addNextIcon():void315 {316 crtLatestIconIndex++;317 if(crtLatestIconIndex > iconListLength - 1)318 {319 crtLatestIconIndex = 0;320 }321 322 if(crtBottomIconContainer.numChildren > 0)323 {324 crtBottomIconContainer.removeChildAt(0);325 }326 crtBottomIconContainer.addChild(iconList[crtLatestIconIndex]);327 }328 329 private function init():void330 {331 crtStatus = STATUS_A;332 speed = 65;333 334 setIconsAsset();335 addBgAssst();336 addContainer();337 addContainerMask();338 addIconContainers();339 340 addChild(btn);341 342 }343 344 private function addContainer():void345 {346 container = new Sprite();347 container.graphics.beginFill(0xff0000,0);348 container.graphics.drawRect(0,0,bg.width,bg.height);349 addChild(container);350 }351 352 private function addContainerMask():void353 {354 containerMask = new Sprite();355 containerMask.graphics.beginFill(0x00ff33,0);356 containerMask.graphics.drawRect(0,0,bg.width,bg.height - 8);357 containerMask.y = 4;358 addChild(containerMask);359 360 // container.mask = containerMask;361 }362 363 /**364 * 刚最后一张显示时，把第一张icon移动最下面 365 * 366 */ 367 private function resetIconsPos():void368 {369 370 }371 372 private function addIconContainers():void373 {374 iconContainerA = new Sprite();375 iconContainerB = new Sprite();376 377 iconContainerA.graphics.beginFill(0x000000,0);378 iconContainerA.graphics.drawRect(0,0,bg.width,bg.height);379 iconContainerA.x = 0;380 iconContainerA.y = ICON_HEIGHT;381 crtLatestIconIndex = 0;382 iconContainerA.addChild(iconList[crtLatestIconIndex]);383 container.addChild(iconContainerA);384 385 iconContainerB.graphics.beginFill(0xffff00,0);386 iconContainerB.graphics.drawRect(0,0,bg.width,bg.height);387 iconContainerB.x = 0;388 iconContainerB.y = ICON_HEIGHT * 2;389 crtLatestIconIndex = 1;390 iconContainerB.addChild(iconList[crtLatestIconIndex]);391 container.addChild(iconContainerB);392 393 crtBottomIconContainer = iconContainerB;394 }395 396 private function addBgAssst():void397 {398 bgAsset = new AwardBg();399 addChild(bgAsset);400 bg = bgAsset._bg;401 btn = bgAsset._btn;402 btn.addEventListener(MouseEvent.CLICK,btnClickHandler);403 }404 405 private function readyRun():void406 {407 if(crtStatus == STATUS_A)408 {409 crtStatus = STATUS_B;410 addEventListener(Event.ENTER_FRAME,efHandler);411 }412 }413 414 private function setIconsAsset():void415 {416 iconList = [];417 var icon1:AwardIcon = new AwardIcon(new ICON_1(),AwardIconIndex.ICON_1);418 var icon2:AwardIcon = new AwardIcon(new ICON_2(),AwardIconIndex.ICON_2);419 var icon3:AwardIcon = new AwardIcon(new ICON_3(),AwardIconIndex.ICON_3);420 var icon4:AwardIcon = new AwardIcon(new ICON_4(),AwardIconIndex.ICON_4);421 var icon5:AwardIcon = new AwardIcon(new ICON_5(),AwardIconIndex.ICON_5);422 var icon6:AwardIcon = new AwardIcon(new ICON_6(),AwardIconIndex.ICON_6);423 var icon7:AwardIcon = new AwardIcon(new ICON_7(),AwardIconIndex.ICON_7);424 var icon8:AwardIcon = new AwardIcon(new ICON_8(),AwardIconIndex.ICON_8);425 var icon9:AwardIcon = new AwardIcon(new ICON_9(),AwardIconIndex.ICON_9);426 var icon10:AwardIcon = new AwardIcon(new ICON_10(),AwardIconIndex.ICON_10);427 var icon11:AwardIcon = new AwardIcon(new ICON_11(),AwardIconIndex.ICON_11);428 var icon12:AwardIcon = new AwardIcon(new ICON_12(),AwardIconIndex.ICON_12);429 var icon13:AwardIcon = new AwardIcon(new ICON_13(),AwardIconIndex.ICON_13);430 var icon14:AwardIcon = new AwardIcon(new ICON_14(),AwardIconIndex.ICON_14);431 var icon15:AwardIcon = new AwardIcon(new ICON_15(),AwardIconIndex.ICON_15);432 var icon16:AwardIcon = new AwardIcon(new ICON_16(),AwardIconIndex.ICON_16);433 var icon17:AwardIcon = new AwardIcon(new ICON_17(),AwardIconIndex.ICON_17);434 var icon18:AwardIcon = new AwardIcon(new ICON_18(),AwardIconIndex.ICON_18);435 var icon19:AwardIcon = new AwardIcon(new ICON_19(),AwardIconIndex.ICON_19);436 var icon20:AwardIcon = new AwardIcon(new ICON_20(),AwardIconIndex.ICON_20);437 var icon21:AwardIcon = new AwardIcon(new ICON_21(),AwardIconIndex.ICON_21);438 439 iconList.push(icon1,icon2,icon3,440 icon4,441 icon5,442 icon6,icon7,443 icon8,icon9,444 icon10,icon11,icon12,icon13,icon14,icon15,icon16,icon17,icon18,icon19,icon20,icon21);445 446 iconListLength = iconList.length;447 448 }449 450 //--------------------------------------------------------------------------451 // Dispose452 //-------------------------------------------------------------------------- 453 }454 }
package{import flash.display.Sprite;import flash.display.StageScaleMode;import flash.events.MouseEvent;import flash.events.TimerEvent;import flash.text.TextField;import flash.utils.Timer;/** * * @author ding.jia * */[SWF(width="1200",height="1000",frameRate="24")]public class Main extends Sprite{//-------------------------------------------------------------------------- // Constructor //-------------------------------------------------------------------------- public function Main() { stage.scaleMode = StageScaleMode.NO_SCALE; machine = new RandomAwardMachine(); machine.x = 200; machine.y = 200; addChild(machine); textField = new TextField(); textField.x = 350; textField.y = 200; textField.text = "点击走到目标"; addChild(textField); textField.addEventListener(MouseEvent.CLICK,tfClickHandler); }//-------------------------------------------------------------------------- // Variables //-------------------------------------------------------------------------- private var machine:RandomAwardMachine;private var textField:TextField;//-------------------------------------------------------------------------- // Propertise //-------------------------------------------------------------------------- //-------------------------------------------------------------------------- // Methods //--------------------------------------------------------------------------//-------------------------------------------------------------------------- // Event Handler //-------------------------------------------------------------------------- private function tfClickHandler(event:MouseEvent):void { machine.receiveTargat(AwardIconIndex.ICON_1); textField.text = "icon1"; }//-------------------------------------------------------------------------- // Private //-------------------------------------------------------------------------- //-------------------------------------------------------------------------- // Dispose //-------------------------------------------------------------------------- }}
转载于:https://www.cnblogs.com/JD85/archive/2011/12/23/2299196.html
相关资源：vb 拉霸游戏源代码.rar