Freeman from the coders perspective

xiotex

Guest

« on: May 16, 2010, 02:28:07 AM »

I decided a while back to team up with Rudolf, the designer of Dyson/Eufloria and Dugan, the artist from Gravity Crash to make a new game called Freeman which Rudolf describes as a 2D exploration game.

All of my work to date on the project has been concentrating on getting the level editor tools up and running. Rudolf thinks I am being nice to him in providing a level editor but the reality is when coding the game I need an easy way to get content in so that I can test and even I hate editing text files all the time. This does of course mean that the last few weeks I have been slogging away at writing a solid dialog based GUI system that makes interacting with the level editor easy. This has meant writing code for:

* Dialogs
* Labels
* Buttons
* Sliders
* Checkboxes
* List Views (display a scrolling list of text and image data)
* Text edit boxes
* Text boxes (non edit variety)
* Frame view (for the animation editor)

It's going well so far but all the coding is having to be done part time as I am having to contract in order to pay the bills so most of the code is being done on the train in the morning on the way to my current contract (EA). To get the above list up and running has taken just over a week at an average of an hour a day but this is helped by getting the base code correct which looks like:

Code:

class CUIBase
{
public:
	CUIBase(){};
	
	virtual ~CUIBase()
	{
		std::list<CUIBase*>::iterator it = m_lChildren.begin();
		
		while(it != m_lChildren.end())
		{
			delete *it;
			++it;
		}
		
		m_lChildren.clear();
	
	};
	
	virtual void UpdateAndRender(float fOffsetX, float fOffsetY) = 0;
	virtual bool OnMouseDown(float fX, float fY) = 0;
	virtual bool OnMouseUp(float fX, float fY) = 0;
	virtual bool OnMouseMove(float fX, float fY) = 0;
	virtual bool OnKeyDown(DWORD dwKey) = 0;
	virtual bool OnKeyUp(DWORD dwKey) = 0;
	virtual void LoseFocus() = 0;
	virtual void MessageHandler(DWORD dwMessage) = 0;
	
	void SetType(UI_TYPE dwType) { m_eType = dwType; }
	UI_TYPE GetType() { return m_eType; }
	
	void SetFocus() { m_bFocus = true; }
	void RemoveFocus() { m_bFocus = false; }
	bool GetFocus() { return m_bFocus; }

	bool HitTest(float fX, float fY)
	{
		if(m_pParent)
		{
			m_fParentX = m_pParent->m_fX;
			m_fParentY = m_pParent->m_fY;
		}
		
		if(fX >= (m_fX + m_fParentX) && fX <= (fX + m_fWidth + m_fParentX))
		{
			if(fY >= (m_fY + m_fParentY) && fY <= (m_fY + m_fHeight + m_fParentY))
			{
				return true;
			}
			else
			{
				return false;
			}
		}
		
		return false;
	}
	
	bool RegisterMouseMove(float fX, float fY)
	{
		if(HitTest(fX, fY))
		{
			m_bMouseOver = true;
			return true;
		}
		
		m_bMouseOver = false;
		return false;
	}
	
	bool RegisterMouseClick(float fX, float fY)
	{
		if(HitTest(fX, fY))
		{
			
			m_bFocus = true;
			m_bMouseDown = true;
			
			m_fMouseOffsetX = fX - m_fX;
			m_fMouseOffsetY = fY - m_fY;
			return true;
		}
		
		m_bFocus = false;
		m_bMouseDown = false;
		return false;

	}
	
	void UpdateAndRenderChildren(float fOffsetX, float fOffsetY)
	{
		std::list<CUIBase*>::iterator it = m_lChildren.begin();
		
		while(it != m_lChildren.end())
		{
			CUIBase* pChild = *it;
			pChild->UpdateAndRender(fOffsetX,fOffsetY);
			++it;
		}
	}
	
protected:
	UI_TYPE				m_eType;
	float				m_fX;
	float				m_fY;
	float				m_fWidth;
	float				m_fHeight;
	bool				m_bFocus;
	bool				m_bMouseDown;
	bool				m_bMouseOver;
	float				m_fMouseOffsetX;
	float				m_fMouseOffsetY;
	float				m_fParentX;
	float				m_fParentY;
	CUIBase*			m_pParent;
	DWORD				m_dwID;
	char				m_cLabel[32];
	std::list<CUIBase*>	m_lChildren;
	
};

Once the GUI boilerplate code is over I have to move onto the actual dialog boxes for each of the section on the editor. Lots to do...


	Logged

BlueSweatshirt

Level 10

the void