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cocos2d-x v3.0新特性及使用

2015-10-31 23:51 483 查看
八月份cocos2d-x官网发布了v3.0版本，这次更新的内容特别多，包括2dx的架构以及使用

总得来说，给开发者带来了很大的便利：

运行环境需求：

Android 2.3 or newer
iOS 5.0 or newer
OS X 10.7 or newer
Windows (which version?)
Linux Ubuntu 12.04 (or newer)

编译环境需求：

Xcode 4.6 (for iOS or Mac)
gcc 4.7 for Linux or Android. For Android ndk-r8e or newer is required.
Visual Studio 2012 (for Windows)

重要更新内容：

Replace Objective-C patters with C++ (C++11) patterns and best practices
Improve Labels
Improve renderer

其中C++ 11 新特性：

A subset of C++11 features are being used in cocos2d-x:

std::function
, including lambda objects for callbacks
strongly typed enums, for most of the cocos2d-x enums and constants
std::thread
for threading
override
context keyword, for overriden methods


st std::function

CallFunc
can be created with an 
std::function<void()>

CallFuncN
can be created with an 
std::function<void(Node*)>

CallFuncND
and 
CallFuncO
were
removed since it can be created with simulated with 
CallFuncN
and 
CallFunc
.
See ActionsTest.cpp for more examples
MenuItem
supports 
std::function<void(Node*)>
as
callbacks

强大枚举类型更新：
Examples:
v2.1v3.0
kCCTexture2DPixelFormat_RGBA8888
Texture2D::PixelFormat::RGBA8888
kCCDirectorProjectionCustom
Director::Projection::CUSTOM
ccGREEN
Color3B::GREEN
CCPointZero
Point::ZERO
CCSizeZero
Size::ZERO
The old values can still be used, but are not deprecated.



override
当虚函数被override关健字修饰时，子类实现时有override标记


Removed Objective-C patterns

移除了所有Object-c模式，删除了CC前辍使用纯C++函数

对于类的使用改变：
2dx-3.0 两也不用使用using coco2d namespace


clone() instead of copy()

clone()
returns an autoreleased version of the copy.
copy()
is no longer supported. If you use it, it will compile, but the
code will crash.
Example:

1// v2.1
2CCMoveBy *action = (CCMoveBy*) move->copy();
3action->autorelease();
4
5// v3.0
6// No need to do autorelease, no need to do casting.
7auto action = move->clone();



Singletons use getInstance() and destroyInstance()

All singletons use 
getInstance()
and 
destroyInstance()
(if
applicable) to get and destroy the instance.
Examples:
v2.1v3.0
CCDirector->sharedDirector()
Director->getInstance()
CCDirector->endDirector()
Director->destroyInstance()
etc...
v2.1 methods are still available, but they were tagged as deprecated.


getters

Getters now use the 
get
prefix.
Examples:
v2.1v3.0
node->boundingBox()
node->getBoundingBox()
sprite->nodeToParentTransform()
sprite->getNodeToParentTransform()
etc...
And getters were also tagged as 
const
in their declaration. Example:
1// v2.1
2virtual float getScale();
3
4// v3.0
5virtual float getScale() const;

v2.1 methods are still available, but they were tagged as deprecated.


POD types

Methods that were receiving POD types as arguments (eg: 
TexParams
, 
Point
, 
Size
,
etc.) are being passed as 
const
reference.
Example:

1// v2.1
2void setTexParameters(ccTexParams* texParams);
3
4// v3.0
5void setTexParameters(const ccTexParams& texParams);



Misc API Changes


ccTypes.h

Remove cc prefix for structure names in ccTypes.h, move global functions into static member functions, and move global constants into const static member variables.

structure name before changingstructure name after changing
ccColor3B
Color3B
ccColor4B
Color4B
ccColor4F
Color4F
ccVertex2F
Vertex2F
ccVertex3F
Vertex3F
ccTex2F
Tex2F
ccPointSprite
PointSprite
ccQuad2
Quad2
ccQuad3
Quad3
ccV2F_C4B_T2F
V2F_C4B_T2F
ccV2F_C4F_T2F
V2F_C4F_T2F
ccV3F_C4B_T2F
V3F_C4B_T2F
ccV2F_C4B_T2F_Triangle
V2F_C4B_T2F_Triangle
ccV2F_C4B_T2F_Quad
V2F_C4B_T2F_Quad
ccV3F_C4B_T2F_Quad
V3F_C4B_T2F_Quad
ccV2F_C4F_T2F_Quad
V2F_C4F_T2F_Quad
ccBlendFunc
BlendFunc
ccT2F_Quad
T2F_Quad
ccAnimationFrameData
AnimationFrameData
Global functions changed example

1
2// in v2.1
3ccColor3B color3B = ccc3(0, 0, 0);
4ccc3BEqual(color3B, ccc3(1, 1, 1));
5ccColor4B color4B = ccc4(0, 0, 0, 0);
6ccColor4F color4F = ccc4f(0, 0, 0, 0);
7color4F = ccc4FFromccc3B(color3B);
8color4F = ccc4FFromccc4B(color4B);
9ccc4FEqual(color4F, ccc4F(1, 1, 1, 1));
10color4B = ccc4BFromccc4F(color4F);
11
12color3B = ccWHITE;
13
14// in v3.0
15Color3B color3B = Color3B(0, 0, 0);
16color3B.equals(Color3B(1, 1, 1));
17Color4B color4B = Color4B(0, 0, 0, 0);
18Color4F color4F = Color4F(0, 0, 0, 0);
19color4F = Color4F(color3B);
20color4F = Color4F(color4B);
21color4F.equals(Color4F(1, 1, 1, 1));
22color4B = Color4B(color4F);
23
24color3B = Color3B::WHITE;



deprecated
functions and global variables

old namenew name
ccp
Point
ccpNeg
Point::-
ccpAdd
Point::+
ccpSub
Point::-
ccpMult
Point::*
ccpMidpoint
Point::getMidpoint
ccpDot
Point::dot
ccpCrosss
Point::cross
ccpPerp
Point::getPerp
ccpRPerp
Point::getRPerp
ccpProject
Point::project
ccpRotate
Point::rotate
ccpUnrotate
Point::unrotate
ccpLengthSQ
Point::getLengthSq()
ccpDistanceSQ
Point::getDistanceSq
ccpLength
Point::getLength
ccpDistance
Point::getDistance
ccpNormalize
Point::normalize
ccpForAngle
Point::forAngle
ccpToAngle
Point::getAngle
ccpClamp
Point::getClampPoint
ccpFromSize
Point::Point
ccpCompOp
Point::compOp
ccpLerp
Point::lerp
ccpFuzzyEqual
Point::fuzzyEqual
ccpCompMult
Point::Point
ccpAngleSigned
Point::getAngle
ccpAngle
Point::getAngle
ccpRotateByAngle
Point::rotateByAngle
ccpLineInersect
Point::isLineIntersect
ccpSegmentIntersect
Point::isSegmentIntersect
ccpIntersectPoint
Point::getIntersectPoint
CCPointMake
Point::Point
CCSizeMake
Size::Size
CCRectMake
Rect::Rect
PointZero
Point::ZERO
SizeZero
Size::ZERO
RectZero
Rect::ZERO
TiledGrid3DAction::tile
TiledGrid3DAction::getTile
TiledGrid3DAction::originalTile
TiledGrid3DAction::getOriginalTile
TiledGrid3D::tile
TiledGrid3D::getTile
TiledGrid3D::originalTile
TiledGrid3D::getOriginalTile
Grid3DAction::vertex
Grid3DAction::getVertex
Grid3DAction::originalVertex
Grid3DAction::getOriginalVertex
Grid3D::vertex
Grid3D::getVertex
Grid3D::originalVertex
Grid3D::getOriginalVertex
Configuration::sharedConfiguration
Configuration::getInstance
Configuration::purgeConfiguration
Configuration::destroyInstance()
Director::sharedDirector()
Director::getInstance()
FileUtils::sharedFileUtils
FileUtils::getInstance
FileUtils::purgeFileUtils
FileUtils::destroyInstance
EGLView::sharedOpenGLView
EGLView::getInstance
ShaderCache::sharedShaderCache
ShaderCache::getInstance
ShaderCache::purgeSharedShaderCache
ShaderCache::destroyInstance
AnimationCache::sharedAnimationCache
AnimationCache::getInstance
AnimationCache::purgeSharedAnimationCache
AnimationCache::destroyInstance
SpriteFrameCache::sharedSpriteFrameCache
SpriteFrameCache::getInstance
SpriteFrameCache:: purgeSharedSpriteFrameCache
SpriteFrameCache::destroyInstance
NotificationCenter::sharedNotificationCenter
NotificationCenter::getInstance
NotificationCenter:: purgeNotificationCenter
NotificationCenter::destroyInstance
Profiler::sharedProfiler
Profiler::getInstance
UserDefault::sharedUserDefault
UserDefault::getInstance
UserDefault::purgeSharedUserDefault
UserDefault::destroyInstance
Application::sharedApplication
Application::getInstance
ccc3()
Color3B()
ccc3BEqual()
Color3B::equals()
ccc4()
Color4B()
ccc4FFromccc3B()
Color4F()
ccc4f()
Color4F()
ccc4FFromccc4B()
Color4F()
ccc4BFromccc4F()
Color4B()
ccc4FEqual()
Color4F::equals()
ccWHITE
Color3B::WHITE
ccYELLOW
Color3B::YELLOW
ccBLUE
Color3B::BLUE
ccGREEN
Color3B::GREEN
ccRED
Color3B::RED
ccMAGENTA
Color3B::MAGENTA
ccBLACK
Color3B::BLACK
ccORANGE
Color3B::ORANGE
ccGRAY
Color3B::GRAY
kBlendFuncDisable
BlendFunc::BLEND_FUNC_DISABLE
--------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------

创建新项目：
v3.0不再需要创建Xcode模版，使用create-multi-platform-projects.py来创建一个跨平台的项目，使用方法
1，cd 到2dx根目录，MAC平台使用./create-multi-platform-projects.py 然后提示：
-bash: ./create-multi-platform-projects.py: /usr/bin/evn: bad interpreter: No such file or directory
没关系，我们打开.py文件，发现其实引用的是tools/project_creator/create_project.py 这文件
2，我们再cd 到project_creator文件中，使用 ./create_project.py -p <PROJECT_NAME> -k <PACKAGE_NAME> -l <cpp|lua|javascript>
3，这样我们就可以在2dx的projects文件夹中找到创建好的项目

关于项目的选择：
图示：



红包点选就可以选择对应运行平台
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