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POb2body is not showing in b2world- Box2D
 

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  1. POb2body is not showing in b2world- Box2D
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    <pre><code>b2BodyDef myBodyDef; myBodyDef.type = b2_dynamicBody; myBodyDef.position.Set(_screenSize.width / 3, _screenSize.height / 3); myBodyDef.angle = 0; b2Body* dynamicBody = m_world-&gt;CreateBody(&amp;myBodyDef); b2PolygonShape boxShape; boxShape.SetAsBox(10, 10); PTM_RATIO = 40.0f; m_debugDraw = new GLESDebugDraw(PTM_RATIO); m_world-&gt;SetDebugDraw(m_debugDraw); b2FixtureDef boxFixtureDef; boxFixtureDef.shape = &amp;boxShape; boxFixtureDef.density = 1; dynamicBody-&gt;CreateFixture(&amp;boxFixtureDef); </code></pre> <p>I am using box2d in cocos2d-x 2.2.1</p> <p>and using this simple code to show a b2body in the screen but for using the </p> <pre><code>m_debugDraw = new GLESDebugDraw(PTM_RATIO); </code></pre> <p>I am getting </p> <pre><code>Classes/HelloWorldScene.cpp:164: error: undefined reference to 'GLESDebugDraw::GLESDebugDraw(float)' </code></pre> <p>i am doing with their reference project only but i couldnt find why the object is not showing in the screen. </p> <p>And if i am not declaring the value for the PTM_RATIO , it is giving error as </p> <pre><code>PTM_RATIO value was not declared in this scope. </code></pre> <h2>UPDATE : 1:</h2> <p>By including the GLES_Render.cpp in my android.mk file the error related to the PTM_RATIO Is cleared.</p> <h2>UPDATE : 2:</h2> <p>this is my draw method code</p> <pre><code>void HelloWorld::draw() { // // IMPORTANT: // This is only for debug purposes // It is recommend to disable it // CCLayer::draw(); ccGLEnableVertexAttribs (kCCVertexAttribFlag_Position); kmGLPushMatrix(); m_world-&gt;DrawDebugData(); kmGLPopMatrix(); } </code></pre> <h2>UPDATE : 3:</h2> <p>My final code:</p> <p>My android.mk file</p> <pre><code>LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE := game_shared LOCAL_MODULE_FILENAME := libgame LOCAL_SRC_FILES := hellocpp/main.cpp \ ../../Classes/AppDelegate.cpp \ ../../Classes/HelloWorldScene.cpp \ ../../Classes/GLES_Render.cpp LOCAL_C_INCLUDES := $(LOCAL_PATH)/../../Classes \ /home/user/adt/cocos2dx/external/Box2D \ /home/user/adt/cocos2dx/external LOCAL_WHOLE_STATIC_LIBRARIES := cocos_testcpp_common LOCAL_WHOLE_STATIC_LIBRARIES += cocos2dx_static LOCAL_WHOLE_STATIC_LIBRARIES += cocosdenshion_static LOCAL_WHOLE_STATIC_LIBRARIES += box2d_static LOCAL_WHOLE_STATIC_LIBRARIES += chipmunk_static LOCAL_WHOLE_STATIC_LIBRARIES += cocos_extension_static include $(BUILD_SHARED_LIBRARY) $(call import-module,cocos2dx) $(call import-module,cocos2dx/platform/third_party/android/prebuilt/libcurl) $(call import-module,CocosDenshion/android) $(call import-module,extensions) $(call import-module,external/Box2D) $(call import-module,external/chipmunk) </code></pre> <p>and this is how i defined the b2world</p> <pre><code>m_world = new b2World(gravity); m_world-&gt;SetAllowSleeping(true); m_world-&gt;SetContinuousPhysics(true); m_debugDraw = new GLESDebugDraw(PTM_RATIO); m_world-&gt;SetDebugDraw(m_debugDraw); uint32 flags = 0; flags += b2Draw::e_shapeBit; // flags += b2Draw::e_jointBit; /*flags += b2Draw::e_aabbBit; flags += b2Draw::e_pairBit; flags += b2Draw::e_centerOfMassBit;*/ m_debugDraw-&gt;SetFlags(flags); </code></pre> <p>then in a menu sprite click callback method i am using this to show a b2body</p> <pre><code>b2BodyDef myBodyDef; myBodyDef.type = b2_dynamicBody; //this will be a dynamic body myBodyDef.position.Set(_screenSize.width / 3, _screenSize.height / 3); //set the starting position myBodyDef.angle = 0; //set the starting angle b2Body* dynamicBody = m_world-&gt;CreateBody(&amp;myBodyDef); dynamicBody-&gt;SetType(b2_staticBody); b2PolygonShape boxShape; boxShape.SetAsBox(200, 200); b2FixtureDef boxFixtureDef; boxFixtureDef.shape = &amp;boxShape; boxFixtureDef.density = 1; dynamicBody-&gt;CreateFixture(&amp;boxFixtureDef); </code></pre> <p>Please suggest me where i am doing wrong . i couldn't find it. thanks</p>
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