CArmedObject Class Reference

The armed object. More...

#include <ArmedObject.h>

Inheritance diagram for CArmedObject:

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Public Member Functions
	CArmedObject (eObject, eSprite, const Vector2 &)
	Constructor.
virtual	~CArmedObject ()
	Destructor.
virtual void	Move ()
	Move object.
virtual void	Draw ()
	Draw object.
void	CreateParticle (const Sage::CParticleDesc2D &)
Public Member Functions inherited from CObject
	CObject (eObject, eSprite, const Vector2 &)
	Constructor.
virtual	~CObject ()
	Destructor.
virtual void	CollisionResponse (const Vector2 &, float, CObject *=nullptr)
	Collision response.
const eObject	GetType () const
	Get object type.

Protected Member Functions
const Vector2	GetViewVector () const
	Compute view vector.
const Vector2	GetGunOffset () const
	Get gun offset.
bool	RotateTowards (const Vector2 &)
	Swivel towards position.
void	DeathFX ()
	Death special effects.

Protected Attributes
UINT	m_nHealth = 1
	Current health.
float	m_fRotSpeed = 0
	Rotational speed.
Vector2	m_vCenterOffset
	Sprite center offset.
Vector2	m_vGunOffset
	Sprite gun offset.
Sage::CParticleEngine2D *	m_pLocalParticleEngine = nullptr
	Pointer to particle engine.
Protected Attributes inherited from CObject
eObject	m_eObject = eObject::Unknown
	Object type.
eSprite	m_eSprite = eSprite::Player
	Sprite type.
Vector2	m_vPos
	Position.
float	m_fRoll = 0
	Roll angle.
float	m_fRadius = 0
	Bounding circle radius.

Friends
class	CObjectManager
	Object manager needs access so it can manage.

Additional Inherited Members
Static Protected Attributes inherited from CCommon
static Sage::CSpriteRenderer *	m_pRenderer = nullptr
	Pointer to renderer.
static CObjectManager *	m_pObjectManager = nullptr
	Pointer to object manager.
static Sage::CParticleEngine2D *	m_pParticleEngine = nullptr
	Pointer to particle engine.
static CPlayer *	m_pPlayer = nullptr
	Pointer to player character.
static bool	m_bGodMode = false
	God mode flag.
static bool	m_bShowState = false
	Show NPC state flag.
static bool	m_bShowBounds = false
	Show collision circle flag.

Detailed Description

An armed object, that is, an object that has a gun. This class adds to CObject some basic functionality needed to manage a gun, including rotation to face a target and locating the end of the gun barrel.

Constructor & Destructor Documentation

CArmedObject()

CArmedObject::CArmedObject	(	eObject	obj,
		eSprite	spr,
		const Vector2 &	p )

Create and initialize an object.

Parameters

obj	Object type.
spr	Sprite type.
p	Initial position of object.

Member Function Documentation

CreateParticle()

void CArmedObject::CreateParticle

(

const Sage::CParticleDesc2D &

d

)

Create a local particle.

Parameters

d	A particle descriptor.

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DeathFX()

void CArmedObject::DeathFX ( )

protected

Perform a particle effect to mark death.

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Draw()

void CArmedObject::Draw ( )

virtual

Draw the sprite offset by the center offset.

Reimplemented from CObject.

Reimplemented in CGuard.

GetGunOffset()

const Vector2 CArmedObject::GetGunOffset ( ) const

protected

Get the rotated vector offset from the center of the sprite to the gun.

Returns

The gun offset.

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GetViewVector()

const Vector2 CArmedObject::GetViewVector ( ) const

protected

Compute the view vector from the object orientation.

Returns

The view vector.

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Move()

void CArmedObject::Move ( )

virtual

Move particle effects relative to the end of the gun barrel and performs a step of the particle engine.

Reimplemented from CObject.

Reimplemented in CGuard, and CPlayer.

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RotateTowards()

bool CArmedObject::RotateTowards ( const Vector2 & pos )

protected

Rotate towards a target point and determine whether sufficiently close to looking directly at it. It first computes theta, the orientation of the vector from the center of the object to the target, then a value diff equal to the difference between the object orientation CArmedObject::m_fRoll and theta. It then computes a positive tracking speed fTrackingSpeed that is faster for larger values of diff, then uses this to compute an angle change fAngleDelta proportional to the tracking speed and frame time. Its rotation speed CArmedObject::m_fRotSpeed is set to plus or minus fTrackingSpeed depending on whether diff is less than -fAngleDelta or greater than fAngleDelta, respectively, and otherwise m_fRoll snaps to theta (the return value will later be true in this case and false otherwise). CArmedObject::m_fRoll is then incremented by an amount proportional to CArmedObject::m_fRotSpeed times the frame time.

Parameters

pos	Target point.

Returns

true if pointing close to target point.

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