Cocos2d-x 3.1.1 Lua示例 ActionManagerTest（动作管理）

Cocos2d-x 3.1.1 Lua示例 ActionManagerTest（动作管理）

本篇博客介绍Cocos2d-x的动作管理例子，这个例子展示了Cocos2d-x的几个动作：

MoveTo——移动动作，移动到某一个点

MoveBy——移动动作，与MoveTo是类似的，只是MoveBy可以移动到某一个点然后按原路返回，提供reverse方法。

RotateTo——旋转动作，把某一精灵旋转到某一角度

RotateBy——旋转动作，把某一精灵旋转某个角度,它有一个方法reverse，它让对象按原路径旋转回

ScaleTo——缩放动作，把某一精灵（Sprite)放大或缩小到某一比例

Scaleby——缩放动作，把某一精灵（Sprite)放大或缩小多少比例,它有一个方法reverse，它让对象按原路径旋转回

这个例子涉及到的知识点有：

• 创建动作序列，例如： cc.Sequence:create(cc.DelayTime:create(1.4),cc.CallFunc:create(removeThis)
• 执行动作序列，例如：ret:runAction( cc.Sequence:create(cc.DelayTime:create(1.4),cc.CallFunc:create(removeThis)))

我们先来看一下这个例子的效果，特别制作动态图给大家展示：

具体代码实现，具体API的使用方法，希望各位能认真看，如果对其中所传参数不清楚和不理解的，可以请教百度老师或者到官网参考具体API，这是学习方法。

》》》ActionManagerTest.lua

local    kTagNode = 0   -- 结点标识local    kTagGrossini = 1 -- local    kTagSequence = 2 -- -- 获取和这个 director 关联的调度器local   scheduler = cc.Director:getInstance():getScheduler()------------------------------------------------------------------------ Test1----------------------------------------------------------------------local function CrashTest()    -- 创建测试层    local ret = createTestLayer("Test 1. Should not crash")    -- 精灵，s_pPathGrossini为图片路径    local  child = cc.Sprite:create(s_pPathGrossini)    -- 显示到x=200，y=200的位置    child:setPosition( 200,200 )    ret:addChild(child, 1)    --Sum of all action's duration is 1.5 second.    -- 旋转一个节点，1.5秒，旋转90度    child:runAction(cc.RotateBy:create(1.5, 90))    -- 执行动作序列，1.4秒延迟，淡出    child:runAction(cc.Sequence:create(cc.DelayTime:create(1.4),cc.FadeOut:create(1.1)))        local function removeThis()        -- 溢出孩子        ret:getParent():removeChild(ret, true)        Helper.nextAction()    end    --After 1.5 second, self will be removed.    -- 1.5秒之后，自身会被移除    ret:runAction( cc.Sequence:create(cc.DelayTime:create(1.4),cc.CallFunc:create(removeThis)))    return retend------------------------------------------------------------------------ LogicTest-- 逻辑测试--------------------------------------------------------------------local function LogicTest()    local ret = createTestLayer("Logic test")    -- 精灵，s_pPathGrossini为图片路径    local  grossini = cc.Sprite:create(s_pPathGrossini)    -- 添加一个子节点到容器中，有Z轴顺序和一个标记。    ret:addChild(grossini, 0, 2)    grossini:setPosition(200,200)    local function bugMe(node)        -- 停止所有动作        node:stopAllActions() --After this stop next action not working, if remove this stop everything is working        node:runAction(cc.ScaleTo:create(2, 2))    end    -- 运行动作序列    grossini:runAction( cc.Sequence:create(cc.MoveBy:create(1, cc.p(150,0)) ,cc.CallFunc:create(bugMe)))    return retend------------------------------------------------------------------------ PauseTest-- 暂停测试--------------------------------------------------------------------local function PauseTest()    local ret = createTestLayer("Pause Test")    local schedulerEntry = nil    local function unpause(dt)        scheduler:unscheduleScriptEntry(schedulerEntry)        schedulerEntry = nil        local  node = ret:getChildByTag( kTagGrossini )        local  pDirector = cc.Director:getInstance()        pDirector:getActionManager():resumeTarget(node)    end    local function onNodeEvent(event)        -- 进入时        if event == "enter" then            local  s = cc.Director:getInstance():getWinSize()            local  l = cc.Label:createWithTTF("After 3 seconds grossini should move", "fonts/Thonburi.ttf", 16)            ret:addChild(l)            l:setAnchorPoint(cc.p(0.5, 0.5))            l:setPosition( cc.p(s.width / 2, 245) )                        local  grossini = cc.Sprite:create(s_pPathGrossini)            ret:addChild(grossini, 0, kTagGrossini)            grossini:setPosition(cc.p(200,200))                        -- 创建移动动作，持续时间1秒，移动到（150，0）的位置            local  action = cc.MoveBy:create(1, cc.p(150,0))            local  pDirector = cc.Director:getInstance()            -- 通过获取director关联的ActionManager并为目标添加动作            -- 为一个目标添加动作。 如果目标已经存在，动作将被加在已经存在的目标上。            -- 如果目标不存在，将会创建这个目标的新对象，这个动作将被添加在这个新创建出来的对象上 当目标动作被暂停，动作队列的顺序也不会乱。            pDirector:getActionManager():addAction(action, grossini, true)            schedulerEntry = scheduler:scheduleScriptFunc(unpause, 3.0, false)        -- 退出        elseif event == "exit" then            if schedulerEntry ~= nil then                scheduler:unscheduleScriptEntry(schedulerEntry)            end        end    end    -- 注册响应事件    ret:registerScriptHandler(onNodeEvent)    return retend------------------------------------------------------------------------ RemoveTest-- --------------------------------------------------------------------local function RemoveTest()    local ret = createTestLayer("Remove Test")    local  l = cc.Label:createWithTTF("Should not crash", "fonts/Thonburi.ttf", 16)    -- 获得屏幕大小    local  s = cc.Director:getInstance():getWinSize()    ret:addChild(l)    l:setAnchorPoint(cc.p(0.5, 0.5))    l:setPosition( cc.p(s.width / 2, 245))    -- 创建移动动作，持续2秒，到（200，0）的位置    local  pMove = cc.MoveBy:create(2, cc.p(200, 0))    -- 停止动作    local function stopAction()        -- 根据Tag来获取子节点        local  pSprite = ret:getChildByTag(kTagGrossini)        pSprite:stopActionByTag(kTagSequence)    end        -- 创建一个回调函数    local callfunc = cc.CallFunc:create(stopAction)    local  pSequence = cc.Sequence:create(pMove,callfunc)    pSequence:setTag(kTagSequence)        local  pChild = cc.Sprite:create(s_pPathGrossini)    pChild:setPosition( 200, 200 )    ret:addChild(pChild, 1, kTagGrossini)    pChild:runAction(pSequence)    return retend------------------------------------------------------------------------ ResumeTest-- 恢复测试--------------------------------------------------------------------local function ResumeTest()    local ret = createTestLayer("Resume Test")    local schedulerEntry = nil    local function resumeGrossini(time)        scheduler:unscheduleScriptEntry(schedulerEntry)        schedulerEntry = nil        local  pGrossini = ret:getChildByTag(kTagGrossini)        local  pDirector = cc.Director:getInstance()        pDirector:getActionManager():resumeTarget(pGrossini)    end    local function onNodeEvent(event)        if event == "enter" then            local  l = cc.Label:createWithTTF("Grossini only rotate/scale in 3 seconds", "fonts/Thonburi.ttf", 16)            ret:addChild(l)            local  s = cc.Director:getInstance():getWinSize()            l:setAnchorPoint(cc.p(0.5, 0.5))            l:setPosition( s.width / 2, 245)            local  pGrossini = cc.Sprite:create(s_pPathGrossini)            ret:addChild(pGrossini, 0, kTagGrossini)            pGrossini:setPosition(200,200)                        -- 运行缩放的动作            pGrossini:runAction(cc.ScaleBy:create(2, 2))            local  pDirector = cc.Director:getInstance()            -- 暂停目标            pDirector:getActionManager():pauseTarget(pGrossini)            -- 运行旋转动作，旋转360度，持续2秒            pGrossini:runAction(cc.RotateBy:create(2, 360))            schedulerEntry = scheduler:scheduleScriptFunc(resumeGrossini, 3.0, false)        elseif event == "exit" then            if schedulerEntry ~= nil then                scheduler:unscheduleScriptEntry(schedulerEntry)            end        end    end    ret:registerScriptHandler(onNodeEvent)    return retendfunction ActionManagerTestMain()    cclog("ActionManagerTestMain")    Helper.index = 1 -- 初始索引为1    -- 设置深度测试    cc.Director:getInstance():setDepthTest(true)    -- 创建场景    local scene = cc.Scene:create()    -- 初始化方法表    Helper.createFunctionTable = {        CrashTest,        LogicTest,        PauseTest,        RemoveTest,        ResumeTest    }    -- 添加层    scene:addChild(CrashTest())    scene:addChild(CreateBackMenuItem())    return sceneend

在例子中用到一些定义好的资源路径，还有相关帮助类，童鞋们可以到可以到相应目录下进行查找：

help.lua（帮助类，封装定义了相关方法，创建测试层、切换场景等）

require "Cocos2d"CC_CONTENT_SCALE_FACTOR = function()  -- 获取surface的大小，单位为像素  return cc.Director:getInstance():getContentScaleFactor()end--把以像素为单位的矩形转换为以点为单位的矩形CC_POINT_PIXELS_TO_POINTS = function(pixels)  return cc.p(pixels.x/CC_CONTENT_SCALE_FACTOR(), pixels.y/CC_CONTENT_SCALE_FACTOR())end-- 把以点为单位的矩形转换为以像素为单位的矩形CC_POINT_POINTS_TO_PIXELS = function(points)  return cc.p(points.x*CC_CONTENT_SCALE_FACTOR(), points.y*CC_CONTENT_SCALE_FACTOR())end-- cclog 打印日志cclog = function(...)  print(string.format(...))end-- change table to enum type  把表转换为枚举类型function CreateEnumTable(tbl, index)  local enumTable = {}  local enumIndex = index or -1  for i, v in ipairs(tbl) do    enumTable[v] = enumIndex + i  end  return enumTableend-- back menu callback 返回菜单回调local function MainMenuCallback()  local scene = cc.Scene:create()  scene:addChild(CreateTestMenu())    -- 切换场景  cc.Director:getInstance():replaceScene(scene)end-- add the menu item for back to main menu-- 为返回主菜单添加菜单项function CreateBackMenuItem()  -- 创建一个标签  local label = cc.Label:createWithTTF("MainMenu", s_arialPath, 20)  -- 设置器锚点  label:setAnchorPoint(cc.p(0.5, 0.5))  -- 设置菜单项标签  local MenuItem = cc.MenuItemLabel:create(label)  MenuItem:registerScriptTapHandler(MainMenuCallback)  -- 获得屏幕大小  local s = cc.Director:getInstance():getWinSize()  -- 创建菜单  local Menu = cc.Menu:create()  -- 添加菜单项  Menu:addChild(MenuItem)  -- 设置菜单位置  Menu:setPosition(0, 0)  -- 设置菜单项位置，大致在右下角的位置  MenuItem:setPosition(s.width - 50, 25)  return Menuend-- 帮助类Helper = {  index = 1,  -- 索引  createFunctioinTable = nil, -- 存储方法的表  currentLayer = nil,   -- 当前层  titleLabel = nil,     -- 标题  subtitleLabel = nil   -- 子标题}-- 下个动作function Helper.nextAction()  Helper.index = Helper.index + 1 -- 索引加1  if Helper.index > table.getn(Helper.createFunctionTable) then    Helper.index = 1   end  return Helper.newScene()end-- 回退动作function  Helper.backAction()  Helper.index = Helper.index - 1  if Helper.index == 0 then    Helper.index = table.getn(Helper.createFunctionTable)  end  return Helper.newScene()end-- 重新开始动作function Helper.restartAction()  return Helper.newScene()end-- 切换新的场景function Helper.newScene()  local scene  -- 如果使用物理效果  if Helper.usePhysics then    -- 创建一个带物理效果的场景    scene = cc.Scene:createWithPhysics()  else    scene = cc.Scene:create()  end  Helper.currentLayer = Helper.createFunctionTable[Helper.index]()  -- 添加当前层  scene:addChild(Helper.currentLayer)  -- 添加返回菜单  scene:addChild(CreateBackMenuItem())  -- 切换场景  cc.Director:getInstance():replaceScene(scene)end-- 初始化层function Helper.initWithLayer(layer)  Helper.currentLayer = layer  -- 获取屏幕大小  local size = cc.Director:getInstance():getWinSize()  Helper.titleLabel = cc.Label:createWithTTF("", s_arialPath, 28)  Helper.titleLabel:setAnchorPoint(cc.p(0.5, 0.5))  layer:addChild(Helper.titleLabel, 1)  Helper.titleLabel:setPosition(size.width / 2, size.height - 50)  Helper.subtitleLabel = cc.Label:createWithTTF("", s_thonburiPath, 16)  Helper.subtitleLabel:setAnchorPoint(cc.p(0.5, 0.5))  layer:addChild(Helper.subtitleLabel, 1)  Helper.subtitleLabel:setPosition(size.width / 2, size.height - 80)  -- menu菜单  local item1 = cc.MenuItemImage:create(s_pPathB1, s_pPathB2)  local item2 = cc.MenuItemImage:create(s_pPathR1, s_pPathR2)  local item3 = cc.MenuItemImage:create(s_pPathF1, s_pPathF2)  item1:registerScriptTapHandler(Helper.backAction)  item2:registerScriptTapHandler(Helper.restartAction)  item3:registerScriptTapHandler(Helper.nextAction)  local menu = cc.Menu:create()  menu:addChild(item1)  menu:addChild(item2)  menu:addChild(item3)  menu:setPosition(cc.p(0, 0))  -- 摆放三个菜单项的位置  item1:setPosition(cc.p(size.width / 2 - item2:getContentSize().width * 2, item2:getContentSize().height / 2))  item2:setPosition(cc.p(size.width / 2, item2:getContentSize().height / 2))  item3:setPosition(cc.p(size.width / 2 + item2:getContentSize().width * 2, item2:getContentSize().height / 2))  layer:addChild(menu, 1)  local background = cc.Layer:create()  layer:addChild(background, -10)end-- 创建测试层function createTestLayer(title, subtitle)  -- 创建一个层  local layer = cc.Layer:create()  Helper.initWithLayer(layer)  local titleStr = title == nil and "No title" or title  local subTitleStr = subtitle  == nil and "" or subtitle  Helper.titleLabel:setString(titleStr)  Helper.subtitleLabel:setString(subTitleStr)  return layerend

testResource.lua

定义了所有的资源路径，方便管理和获取

s_pPathGrossini       = "Images/grossini.png"s_pPathSister1        = "Images/grossinis_sister1.png"s_pPathSister2        = "Images/grossinis_sister2.png"s_pPathB1             = "Images/b1.png"s_pPathB2             = "Images/b2.png"s_pPathR1             = "Images/r1.png"s_pPathR2             = "Images/r2.png"s_pPathF1             = "Images/f1.png"s_pPathF2             = "Images/f2.png"s_pPathBlock          = "Images/blocks.png"s_back                = "Images/background.png"s_back1               = "Images/background1.png"s_back2               = "Images/background2.png"s_back3               = "Images/background3.png"s_stars1              = "Images/stars.png"s_stars2              = "Images/stars2.png"s_fire                = "Images/fire.png"s_snow                = "Images/snow.png"s_streak              = "Images/streak.png"s_PlayNormal          = "Images/btn-play-normal.png"s_PlaySelect          = "Images/btn-play-selected.png"s_AboutNormal         = "Images/btn-about-normal.png"s_AboutSelect         = "Images/btn-about-selected.png"s_HighNormal          = "Images/btn-highscores-normal.png"s_HighSelect          = "Images/btn-highscores-selected.png"s_Ball                = "Images/ball.png"s_Paddle              = "Images/paddle.png"s_pPathClose          = "Images/close.png"s_MenuItem            = "Images/menuitemsprite.png"s_SendScore           = "Images/SendScoreButton.png"s_PressSendScore      = "Images/SendScoreButtonPressed.png"s_Power               = "Images/powered.png"s_AtlasTest           = "Images/atlastest.png"-- tilemaps resources_TilesPng            = "TileMaps/tiles.png"s_LevelMapTga         = "TileMaps/levelmap.tga"-- spine test resources_pPathSpineBoyJson       = "spine/spineboy.json"s_pPathSpineBoyAtlas       = "spine/spineboy.atlas"-- fonts resources_markerFeltFontPath   = "fonts/Marker Felt.ttf"s_arialPath            = "fonts/arial.ttf"s_thonburiPath         = "fonts/Thonburi.ttf"s_tahomaPath           = "fonts/tahoma.ttf"