Enable Box2D on XCode on Existing Project

cocos2d-x C++
#1

Hi,

I copy the HelloCpp project and create my game for android, now im trying to compile with xcode.

Everything is compiling OK, i have added on “include search path” property on xcode the path to “external” directory that contains box2d headers, but when i try compile i got error on linking:

Ld /Users/paulo/Library/Developer/Xcode/DerivedData/DownBlocks-ehmercbdqnskfrbihpczgdnbajxo/Build/Products/Debug-iphonesimulator/DownBlocks.app/DownBlocks normal i386
    cd /Users/paulo/Pessoal/workspaces/cpp/downblocks/projects/DownBlocks/proj.ios
    setenv IPHONEOS_DEPLOYMENT_TARGET 4.0
    setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -arch i386 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk -L/Users/paulo/Library/Developer/Xcode/DerivedData/DownBlocks-ehmercbdqnskfrbihpczgdnbajxo/Build/Products/Debug-iphonesimulator -L/Users/paulo/Pessoal/workspaces/cpp/downblocks/projects/DownBlocks/proj.ios/../../../cocos2dx -F/Users/paulo/Library/Developer/Xcode/DerivedData/DownBlocks-ehmercbdqnskfrbihpczgdnbajxo/Build/Products/Debug-iphonesimulator -filelist /Users/paulo/Library/Developer/Xcode/DerivedData/DownBlocks-ehmercbdqnskfrbihpczgdnbajxo/Build/Intermediates/DownBlocks.build/Debug-iphonesimulator/DownBlocks.build/Objects-normal/i386/DownBlocks.LinkFileList -Xlinker -objc_abi_version -Xlinker 2 -fobjc-link-runtime -Xlinker -no_implicit_dylibs -mios-simulator-version-min=4.0 /Users/paulo/Library/Developer/Xcode/DerivedData/DownBlocks-ehmercbdqnskfrbihpczgdnbajxo/Build/Products/Debug-iphonesimulator/libcocos2dx.a -framework Foundation -framework UIKit -framework CoreGraphics -framework OpenGLES -lxml2 -lz -framework QuartzCore -o /Users/paulo/Library/Developer/Xcode/DerivedData/DownBlocks-ehmercbdqnskfrbihpczgdnbajxo/Build/Products/Debug-iphonesimulator/DownBlocks.app/DownBlocks

Undefined symbols for architecture i386:
  "b2EdgeShape::Set(b2Vec2 const&, b2Vec2 const&)", referenced from:
      HelloWorld::createBox2DWorld() in HelloWorldScene.o
  "b2MouseJoint::SetTarget(b2Vec2 const&)", referenced from:
      PhysicsSprite::ccTouchMoved(cocos2d::CCTouch*, cocos2d::CCEvent*) in PhysicsSprite.o
  "b2PolygonShape::Set(b2Vec2 const*, int)", referenced from:
      HelloWorld::createBox2DBodyForSprite(cocos2d::CCSprite*, int, b2Vec2*) in HelloWorldScene.o
  "b2PolygonShape::SetAsBox(float, float)", referenced from:
      HelloWorld::init() in HelloWorldScene.o
      HelloWorld::createBox2DBodyForSprite(cocos2d::CCSprite*, int, b2Vec2*) in HelloWorldScene.o
  "b2Body::SetTransform(b2Vec2 const&, float)", referenced from:
      HelloWorld::updateBox2DWorld(float) in HelloWorldScene.o
  "b2Body::CreateFixture(b2FixtureDef const*)", referenced from:
      HelloWorld::init() in HelloWorldScene.o
      HelloWorld::createBox2DBodyForSprite(cocos2d::CCSprite*, int, b2Vec2*) in HelloWorldScene.o
  "b2Body::CreateFixture(b2Shape const*, float)", referenced from:
      HelloWorld::createBox2DWorld() in HelloWorldScene.o
  "b2World::CreateBody(b2BodyDef const*)", referenced from:
      HelloWorld::init() in HelloWorldScene.o
      HelloWorld::createBox2DWorld() in HelloWorldScene.o
      HelloWorld::createBox2DBodyForSprite(cocos2d::CCSprite*, int, b2Vec2*) in HelloWorldScene.o
  "b2World::CreateJoint(b2JointDef const*)", referenced from:
      PhysicsSprite::ccTouchBegan(cocos2d::CCTouch*, cocos2d::CCEvent*) in PhysicsSprite.o
  "b2World::DestroyBody(b2Body*)", referenced from:
      HelloWorld::updateBox2DWorld(float) in HelloWorldScene.o
  "b2World::DestroyJoint(b2Joint*)", referenced from:
      PhysicsSprite::ccTouchEnded(cocos2d::CCTouch*, cocos2d::CCEvent*) in PhysicsSprite.o
      PhysicsSprite::ccTouchCancelled(cocos2d::CCTouch*, cocos2d::CCEvent*) in PhysicsSprite.o
  "b2World::SetAllowSleeping(bool)", referenced from:
      HelloWorld::createBox2DWorld() in HelloWorldScene.o
  "b2World::SetContactListener(b2ContactListener*)", referenced from:
      HelloWorld::createBox2DWorld() in HelloWorldScene.o
  "b2World::Step(float, int, int)", referenced from:
      HelloWorld::updateBox2DWorld(float) in HelloWorldScene.o
  "b2World::b2World(b2Vec2 const&)", referenced from:
      HelloWorld::createBox2DWorld() in HelloWorldScene.o
  "vtable for b2EdgeShape", referenced from:
      b2EdgeShape::b2EdgeShape() in HelloWorldScene.o
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
  "vtable for b2PolygonShape", referenced from:
      b2PolygonShape::b2PolygonShape() in HelloWorldScene.o
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Can anyone help me?

#2

Can anyone help me please?

#3

Hi,
I, to insert the Box2D src in my project, I had “drag&drop” the source code inside xcode project! There is another way?

bye!

Paulo Coutinho wrote:

Hi,
>
I copy the HelloCpp project and create my game for android, now im trying to compile with xcode.
>
Everything is compiling OK, i have added on “include search path” property on xcode the path to “external” directory that contains box2d headers, but when i try compile i got error on linking:
>
[…]
>
Can anyone help me?

#4

The Box2D source already is especified in “include headers path”, this is not the problem.

The problem is when linking.

#5

ok!

Are you sure, that XCode has compiled the Box2d sources? check on project settings/Build phases/Compiles sources…

Stefano

Paulo Coutinho wrote:

Hi,
>
I copy the HelloCpp project and create my game for android, now im trying to compile with xcode.
>
Everything is compiling OK, i have added on “include search path” property on xcode the path to “external” directory that contains box2d headers, but when i try compile i got error on linking:
>
[…]
>
Can anyone help me?

#6

Hi Stefano,

You are correct man, i forgot that we need do it in xcode, now it is working.

Very thanks.

#7

oh! yeah!

good work!

Paulo Coutinho wrote:

Hi,
>
I copy the HelloCpp project and create my game for android, now im trying to compile with xcode.
>
Everything is compiling OK, i have added on “include search path” property on xcode the path to “external” directory that contains box2d headers, but when i try compile i got error on linking:
>
[…]
>
Can anyone help me?