Cocos2d-x 3.1.1 Lua演示样例 ActionManagerTest（动作管理）
本篇博客介绍Cocos2d-x的动作管理样例，这个样例展示了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是相似的，仅仅是MoveBy能够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样例涉及到的知识点有：
- 创建动作序列，比如： cc.Sequence:create(cc.DelayTime:create(1.4),cc.CallFunc:create(removeThis)
- 执行动作序列，比如：ret:runAction( cc.Sequence:create(cc.DelayTime:create(1.4),cc.CallFunc:create(removeThis)))
我们先来看一下这个样例的效果，特别制作动态图给大家展示：
详细代码实现，详细API的用法，希望各位能认真看，假设对当中所传參数不清楚和不理解的，能够请教百度老师或者到官网參考详细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()
-- 创建測试层
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 ret
end --------------------------------------------------------------------
--
-- LogicTest
-- 逻辑測试
--------------------------------------------------------------------
local function LogicTest()
local ret = createTestLayer("Logic test")
-- 精灵，s_pPathGrossini为图片路径
local grossini = cc.Sprite:create(s_pPathGrossini)
-- 加入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)
-- 停止全部动作
node:stopAllActions() --After this stop next action not working, if remove this stop everything is working
node:runAction(cc.ScaleTo:create(2, 2))
end
-- 执行动作序列
grossini:runAction( cc.Sequence:create(cc.MoveBy:create(1, cc.p(150,0)) ,cc.CallFunc:create(bugMe)))
return ret
end --------------------------------------------------------------------
--
-- PauseTest
-- 暂停測试
-------------------------------------------------------------------- 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并为目标加入动作
-- 为一个目标加入动作。 假设目标已经存在，动作将被加在已经存在的目标上。
-- 假设目标不存在，将会创建这个目标的新对象，这个动作将被加入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
-- 注冊响应事件
ret:registerScriptHandler(onNodeEvent)
return ret
end --------------------------------------------------------------------
--
-- 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()
-- 依据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 ret
end --------------------------------------------------------------------
--
-- ResumeTest
-- 恢复測试
--------------------------------------------------------------------
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) -- 执行缩放的动作
pGrossini:runAction(cc.ScaleBy:create(2, 2)) local pDirector = cc.Director:getInstance()
-- 暂停目标
pDirector:getActionManager():pauseTarget(pGrossini)
-- 执行旋转动作，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 ret
end function ActionManagerTestMain()
cclog("ActionManagerTestMain")
Helper.index = 1 -- 初始索引为1
-- 设置深度測试
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
}
-- 加入层
scene:addChild(CrashTest())
scene:addChild(CreateBackMenuItem())
return scene
end
在样例中用到一些定义好的资源路径，还有相关帮助类，童鞋们能够到能够到对应文件夹下进行查找：
help.lua（帮助类，封装定义了相关方法，创建測试层、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 enumTable
end -- 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
-- 为返回主菜单加入菜单项
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()
-- 加入菜单项
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 Menu
end -- 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 -- 又一次開始动作
function Helper.restartAction()
return Helper.newScene()
end -- 切换新的场景
function Helper.newScene()
local scene
-- 假设使用物理效果
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]()
-- 加入当前层
scene:addChild(Helper.currentLayer)
-- 加入返回菜单
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 -- 创建測试层
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 layer
end
testResource.lua
定义了全部的资源路径，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 resource
s_TilesPng = "TileMaps/tiles.png"
s_LevelMapTga = "TileMaps/levelmap.tga" -- spine test resource
s_pPathSpineBoyJson = "spine/spineboy.json"
s_pPathSpineBoyAtlas = "spine/spineboy.atlas" -- fonts resource
s_markerFeltFontPath = "fonts/Marker Felt.ttf"
s_arialPath = "fonts/arial.ttf"
s_thonburiPath = "fonts/Thonburi.ttf"
s_tahomaPath = "fonts/tahoma.ttf"