Written by dreamfairy on 2013 年 10 月 08 日. Posted in C++, Cocos2d-x, Lua
之前已经实现了在场景上添加英雄,并使英雄播放待机动作,接下来让英雄在场景动起来
本游戏的代码已开源,包含游戏资源
git地址
https://github.com/dreamfairy/PrompaLua
首先我们创建用户控制层 HudLayer.lua 包位置为 scenes.layers.HudLayer.lua
HudLayer.lua 的内容为
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | local HudLayer = class ( "HudLayer" , function ( ) return display .newLayer ( ) end ) local DPad function HudLayer :ctor ( ) end function HudLayer :getDPad ( ) return DPad end return HudLayer |
可以看到我们实现了一个 getDPad()方法,但是DPad目前还是nil,接下来开始创建 DPad 用户 *** 控面板
创建 SimpleDPad.lua 包位置为 scenes.Controller.SimpleDPad.lua
SimpleDPad 内容:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 | local SimpleDPad = class ( "SimpleDPad" , function ( ) return display .newSprite ( "pd_dpad.png" ) end ) local Radius local Direction local IsHeld local Delegate function SimpleDPad :ctor ( ) local updateFunc = function (dt ) self :onUpdate (dt ) end IsHeld = false Direction = CCPointZero self :scheduleUpdate (updateFunc ) self :setNodeEventEnabled ( true ) self .touchLayer = display .newLayer ( ) self :addChild (self .touchLayer ) end function SimpleDPad :updateDirectionFortouchLocation (location ) local @R_419_4741@ = ccpToAngle (ccpsub (location ,ccp (self :getpositionX ( ) ,self :getpositionY ( ) ) ) ) local degrees = - 1 * math.deg (@R_419_4741@ ) if degrees <= 22.5 and degrees >= - 22.5 then --right Direction = ccp ( 1.0 , 0.0 ) elseif degrees > 22.5 and degrees < 67.5 then --bottom right Direction = ccp ( 1.0 ,- 1.0 ) elseif degrees >= 67.5 and degrees <= 112.5 then --bottom Direction = ccp ( 0.0 ,- 1.0 ) elseif degrees > 112.5 and degrees < 157.5 then --bottom left Direction = ccp ( - 1.0 ,- 1.0 ) elseif degrees >= 157.5 or degrees <= - 157.5 then --left Direction = ccp ( - 1.0 , 0.0 ) elseif degrees < - 22.5 and degrees > - 67.5 then --top right Direction = ccp ( 1.0 , 1.0 ) elseif degrees <= - 67.5 and degrees >= - 112.5 then --top Direction = ccp ( 0.0 , 1.0 ) elseif degrees < - 112.5 and degrees > - 157.5 then --top left Direction = ccp ( - 1.0 , 1.0 ) end Delegate :dIDChangeDirectionTo (self ,Direction ) end function SimpleDPad :onEnter ( ) self .touchLayer :addtouchEventListener ( function (event ,x ,y ) return self :ontouch (event ,y ) end ) self .touchLayer :settouchEnabled ( true ) end function SimpleDPad :onExit ( ) self .touchLayer :removetouchEventListener ( ) self :settouchEnabled ( false ) end function SimpleDPad :onUpdate (dt ) --ccluaLog(dt) if IsHeld == true then Delegate :isHoldingDirection (self ,Direction ) end end function SimpleDPad :seTradius (value ) Radius = value ; end function SimpleDPad :setDelegate (value ) Delegate = value end function SimpleDPad :ontouch (event ,y ) local location = ccp (x ,y ) if event == "began" then local distanceSQ = ccpdistanceSQ (location , ccp (self :getpositionX ( ) ,self :getpositionY ( ) ) ) if distanceSQ <= Radius * Radius then self :updateDirectionFortouchLocation (location ) IsHeld = true return true end return false end if event == "moved" then self :updateDirectionFortouchLocation (location ) end if event == "ended" then location = CCPointZero IsHeld = false Delegate :simpleDPadtouchended (self ) end end return SimpleDPad |
使用 display.newSprite(“pd_dpad.png”) 8方向键作为用户的 *** 作面板
self:setNodeEventEnabled(true) 开启节点事件,只有开启该事件 onEnter 和 onExit函数才会被调用,我们需要在 onEnter 函数中添加触摸事件监听,并在 onExit中移除它
self.touchLayer = display.newLayer() 建立一个 touch 层,用来接收触摸事件
self:addChild(self.touchLayer)
在编写的时候,Delegate 是在 setDelegate 函数调用后初始化的,Delegate 实际上市一个 接口,任何实现该接口的类都可以被set进来
现在来编写 Delegate 接口,一共有3个函数和1个继承方法
创建 SimpleDPadDelegate.lua 包位置 scenes.Controller.SimpleDPadDelegate.lua
SimpleDPadDelegate 的内容如下
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | local SimleDpadDelegate = { } function SimleDpadDelegate :extend ( ) local o = { } setMetatable (o ,self ) self .__index = self return o end function SimleDpadDelegate :dIDChangeDirectionTo (SimpleDPad ,Direction ) ccluaLog ( "This function muse be written" ) end function SimleDpadDelegate :isHoldingDirection (SimpleDPad ,Direction ) ccluaLog ( "This function muse be written" ) end function SimleDpadDelegate :simpleDPadtouchended (SimpleDPad , Direction ) ccluaLog ( "This function muse be written" ) end return SimleDpadDelegate |
好了,现在有Delegate 接口了,我们让 GameLayer 来实现它,并在GameLayer上实现 *** 控英雄的逻辑
GamLayer.lua 中添加一个变量
1 | local Delegate = require ( "scenes.Controller.SimpleDPadDelegate" ) :extend ( ) |
Delegate 继承了 SimpleDPadDelegate中的方法,之后要在GameLayer中具体实现
继续实现3个方法
1 2 3 4 5 6 7 8 9 10 11 12 13 | function Delegate :dIDChangeDirectionTo (SimpleDPad ,Direction ) Hero :walkWithDirection (Direction ) end function Delegate :isHoldingDirection (SimpleDPad ,Direction ) Hero :walkWithDirection (Direction ) end function Delegate :simpleDPadtouchended (SimpleDPad , Direction ) if Hero :getActionState ( ) == ACTION_STATE_WALK then Hero :IDle ( ) end end |
*** 作的逻辑部分基本完成,现在将它们组装起来
在HudLayer.lua 的ctor()中添加下列代码
1 2 3 4 5 6 7 | function HudLayer :ctor ( ) DPad = require ( "scenes.Controller.SimpleDPad" ) .new ( ) DPad :seTradius ( 64 ) DPad :setposition ( 64 , 64 ) DPad :setopacity ( 100 ) self :addChild (DPad ) end |
在 GameScene 中添加HudLayer,并将 GameLayer 设置为Delegate
GameScene.lua 现在完整代码如下
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | require ( "config" ) local GameScene = class ( "GameScene" , function ( ) return display .newScene ( "GameScene" ) end ) local GameLayer = require ( "scenes.layers.GameLayer" ) .new ( ) local HudLayer = require ( "scenes.layers.HudLayer" ) .new ( ) function GameScene :ctor ( ) self :addChild (GameLayer ) self :addChild (HudLayer ) local DPad = HudLayer :getDPad ( ) DPad :setDelegate (GameLayer :getClass ( ) ) end 到此为止,你已经可以使用你的控制器,控制英雄行走了 <img src = "http://www.dreamfairy.cn/blog/wp-content/uploads/2013/10/p3.jpg" alt = "p3" wIDth = "486" height = "368" class = "aligncenter size-full wp-image-1576" /> return GameScene |
下一节将添加上怪物们,以及让它们可以被攻击
Tags: Cocos2d-x, lua
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