Extreme noob traversing the turtorials

[Ein]

I'm going through turtorial 8 and am up to the point where it instructs me to

In the body of the constructor we need to assign the passed arguments to the proper variables.

I have exactly 0 knowledge of c++ / oo, only a minimal grasp on c, and I assume this is pretty obvious.

If somebody can point me in the right direction, it would be greatly appreciated. Even with my limited knowledge I managed to make a 2d minigame with the dx9sdk, but for some reason I'm just not grasping this.

This is my turtorialframelistener.cpp file (spaceframelistener.cpp in my project)

Code: Select all

#include "spaceframelistener.h"

SpaceFrameListener::SpaceFrameListener(RenderWindow* win, Camera* cam,
    SceneNode* controlNode,
    SceneNode* shipNode,
    SceneNode* cameraNode)
{ 
   mControlNode = controlNode; 
   mShipNode = shipNode; 
   mCameraNode = cameraNode; 
   mbFirstPerson = false; 
} 


bool SpaceFrameListener::frameStarted(const FrameEvent& evt)
{
    Real MoveFactor = 80.0 * evt.timeSinceLastFrame;

	mInputDevice->capture();

    if(mInputDevice->isKeyDown(Ogre::KC_UP))
        mControlNode->translate(0.0, MoveFactor, 0.0);
    if(mInputDevice->isKeyDown(Ogre::KC_DOWN))
        mControlNode->translate(0.0, -MoveFactor, 0.0);
    if(mInputDevice->isKeyDown(Ogre::KC_LEFT))
        mControlNode->translate(-MoveFactor, 0.0, 0.0);
    if(mInputDevice->isKeyDown(Ogre::KC_RIGHT))
        mControlNode->translate(MoveFactor, 0.0, 0.0);
	if(mInputDevice->isKeyDown(Ogre::KC_F))
	{
	    while (mInputDevice->isKeyDown(Ogre::KC_F))
			mInputDevice->capture();
		if (mbFirstPerson)
		{
	        // third person
		    mCameraNode->setPosition( Vector3( 0, 50, -200) );
			mbFirstPerson = false;
		}
		else
		{
	        // first person
		    mCameraNode->setPosition( Vector3( 0, 5, 40) );
			mbFirstPerson = true;
		};
	};
    if (mInputDevice->isKeyDown( KC_ESCAPE))
    {
        return false;
    }
    return true;
}

and my spaceframelistener.h

Code: Select all

#pragma once
#include "c:\cpp\ogrenew\samples\common\include\exampleframelistener.h"


class SpaceFrameListener : public ExampleFrameListener
{
protected:
    SceneNode* mControlNode;
    SceneNode* mShipNode;
    SceneNode* mCameraNode;
	bool mbFirstPerson;
public:
    SpaceFrameListener(RenderWindow* win, Camera* cam,
    SceneNode* controlNode,
    SceneNode* shipNode,
    SceneNode* cameraNode);
    bool frameStarted(const FrameEvent& evt);
};

I'm getting

c:\cpp\ogrenew\Samples\Space3\SpaceFrameListener.cpp(7): error C2512: 'ExampleFrameListener' : no appropriate default constructor available

[DWORD]

You need to add a line to the constructor so it becomes:

Code: Select all

SpaceFrameListener::SpaceFrameListener(RenderWindow* win, Camera* cam, 
    SceneNode* controlNode, 
    SceneNode* shipNode, 
    SceneNode* cameraNode)
  : ExampleFrameListener(win, cam) // <--- add this line
{ 
   mControlNode = controlNode; 
   mShipNode = shipNode; 
   mCameraNode = cameraNode; 
   mbFirstPerson = false; 
}

I'm short of time, so I didn't read the complete tutorial. Maybe this needs to be added, if I did not miss it. The error you get is because the compiler don't know how to intialize the ExampleFrameListener if you don't pass on the 'win', and 'cam' parameters.

[Ein]

That did it!
Thanks a lot, now I can get back to pretending I know what I'm doing!

I think ogre might be my toy of choice from now on, being able to render a 3d scene with less code and hassle than it took to draw a sprite with dx9 is no small feat.