CGame Class Reference

The game class. More...

#include <Game.h>

Inheritance diagram for CGame:

Collaboration diagram for CGame:

Public Member Functions
	~CGame ()
	Destructor.
void	Initialize ()
	Initialize the game.
void	ProcessFrame ()
	Process an animation frame.
void	Release ()
	Release the renderer.

Private Member Functions
void	SetScoreDesc ()
	Set score descriptor.
void	LoadSprites ()
	Load sprites.
void	LoadSounds ()
	Load sounds.
void	BeginGame ()
	Begin playing the game.
void	KeyboardHandler ()
	The keyboard handler.
void	DrawFrameRateText (const XMVECTORF32 &)
	Draw frame rate text to screen.
void	RenderFrame ()
	Render an animation frame.
void	ProcessState ()
	Process game state.
void	Launch ()
	Create and launch a ball.

Private Attributes
bool	m_bDrawFrameRate = false
	Draw the frame rate.
eGameState	m_eGameState = eGameState::Loading
	Game state.
CObjectManager *	m_pObjectManager = nullptr
	Pointer to object manager.
Sage::CSpriteDesc2D	m_cClipDesc0
	Sprite descriptor for clip 0.
Sage::CSpriteDesc2D	m_cClipDesc1
	Sprite descriptor for clip 0.
Sage::CSpriteDesc2D	m_cScoreDesc [NUMSCOREDIGITS]
	Sprite descriptors for score digits.
Shapes::CDynamicCircle *	m_pCurBallShape = nullptr
	Pointer to current ball shape.

Static Private Attributes
static const UINT	NUMSCOREDIGITS = 6
	Number of digits in score.

Additional Inherited Members
Static Protected Attributes inherited from CCommon
static Sage::CSpriteRenderer *	m_pRenderer = nullptr
	Pointer to the renderer.
static CObjectManager *	m_pObjectManager = nullptr
	Pointer to the object manager.
static UINT	m_nMIterations = 4
	Number of motion iterations.
static UINT	m_nCIterations = 1
	Number of collision iterations.
static float	m_fFrequency = 60.0f*m_nMIterations
	Frequency, number of physics iterations per second.
static eDrawMode	m_eDrawMode = eDrawMode::Background
	Draw mode.
static bool	m_bBallInPlay = false
	Is there a ball currently in play?
static UINT	m_nScore = 0
	Current score.

Detailed Description

The game class is the object-oriented implementation of the game. This class must contain the following public member functions. Initialize() does initialization and will be run exactly once at the start of the game. ProcessFrame() will be called once per frame to create and render the next animation frame. Release() will be called at game exit but before any destructors are run.

Member Function Documentation

BeginGame()

void CGame::BeginGame ( )

private

Create the edges of the world and some shapes.

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DrawFrameRateText()

void CGame::DrawFrameRateText ( const XMVECTORF32 & color )

private

Draw the current frame rate to a hard-coded position in the window. The frame rate will be drawn in a hard-coded position using the font specified in GameSettings.xml.

Parameters

color

Text color from Colors::.

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Initialize()

void CGame::Initialize

(

)

Initialize the game as follows. Set the timer. Initialize game variables. Create the renderer and the object manager. Load images and sounds from files.

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KeyboardHandler()

void CGame::KeyboardHandler ( )

private

Poll the keyboard state and respond to the key presses that happened since the last frame.

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Launch()

void CGame::Launch ( )

private

If there is no ball, create one and place it in the chute ready for launch. Otherwise, assuming that this has been done and the ball is ready to launch, then apply a vertical impulse to it. Add a little bit of randomness to that impulse so that it behaves slightly differently each time.

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LoadSounds()

void CGame::LoadSounds ( )

private

Create a media list Sage::CMediaList of eSound. For each sound, insert into the media list a pair consisting of an instance of the sound enumerated type eSound and the corresponding string used in the name field in a <sound> tag in GameSettings.xml. Pass the media list to the sound manager for loading.

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LoadSprites()

void CGame::LoadSprites ( )

private

Create a media list Sage::CMediaList of eSprite. For each sprite, insert into the media list a pair consisting of an instance of the sprite enumerated type eSprite and the corresponding string used in the name field in a <sprite> tag in GameSettings.xml. Pass the media list to the renderer for loading.

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ProcessFrame()

void CGame::ProcessFrame

(

)

Handle keyboard input, move the game objects and render them in their new positions and orientations. Notify the audio player at the start of each frame so that it can prevent multiple copies of a sound from starting on the same frame.

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ProcessState()

void CGame::ProcessState ( )

private

Process any changes to the current game state. If the game is in state eGameState::Loading and both the renderer and the sound manager have finished loading (which may or may not be multithreaded), then begin the game.

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Release()

void CGame::Release

(

)

Release all of the DirectX12 objects by deleting the renderer.

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RenderFrame()

void CGame::RenderFrame ( )

private

Ask the object manager to draw the game objects. The renderer is notified of the start and end of the frame so that it can let Direct3D do its pipelining jiggery-pokery. Finally, draw the score and the clip sprites for the gates.

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SetScoreDesc()

void CGame::SetScoreDesc ( )

private

Set the score sprites and positions in the score descriptor. This function must only be called after the sprites have been loaded.

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