CRagdoll Class Reference

The ragdoll. More...

#include <Ragdoll.h>

Inheritance diagram for CRagdoll:

Collaboration diagram for CRagdoll:

Public Member Functions
	CRagdoll (const Vector2 &)
	Constructor.
	~CRagdoll ()
	Destructor.
void	StandUp ()
	Attempt to stand up.
Public Member Functions inherited from CBody
virtual	~CBody ()
	Destructor.
void	DeliverImpulse (float)
	Deliver impulse to body.
void	Teleport (const Vector2 &)
	Magically teleport body by this amount.
void	Draw ()
	Draw body.

Private Member Functions
const bool	isOnLeftSide () const
	Is on left side.
const bool	isOnRightSide () const
	Is on right side.
const bool	isTippingLeft () const
	Is tipping left.
const bool	isTippingRight () const
	Is tipping right.
const bool	isStanding () const
	Is standing.
void	SetRelativePos (ePoint, ePoint, float, float)
	Set relative position.
void	CreateStick (ePoint, ePoint)
	Create a stick.
void	CreateSpring (ePoint, ePoint, float)
	Create a spring.
const Vector2 &	GetPos (ePoint) const
	Get position of a point.
const float	GetRadius (ePoint) const
	Get radius of ball at a point.
void	DeliverImpulse (ePoint, float, float)
	Deliver impulse to point.

Private Attributes
float	m_fDelay = 1.0f
	Delay between attempts to stand up.
Vector2 *	m_pPos = nullptr
	Temporary array of point positions.
CPoint **	m_pPt = nullptr
	Temporary array of points.

Additional Inherited Members
Protected Member Functions inherited from CBody
CPoint *	CreatePoint (eSprite, const Vector2 &)
	Create point.
CSpring *	CreateSpring (eSprite, CPoint *, CPoint *, float=1.0f)
	Create spring.
Protected Attributes inherited from CBody
std::vector< CPoint * >	m_stdPt
	Vector of pointers to points in this body.
std::vector< CSpring * >	m_stdSpr
	Vector of pointers to springs.
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 eBody	m_eCurrentBody = (eBody)0
	Current body type.

Detailed Description

The ragdoll is a body that is approximately in the shape of a human body, with springs to make it stay in the right stance. It has a little rule-based AI to help it stay standing up.

Constructor & Destructor Documentation

CRagdoll()

CRagdoll::CRagdoll

(

const Vector2 &

vCenter

)

Make a cross-braced stick figure with spring constraints.

Parameters

vCenter

Location of ragdoll center.

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~CRagdoll()

CRagdoll::~CRagdoll

(

)

Virtual destructor required because CRagDoll is derived from CBody but is accessed using a CBody* pointer.

Member Function Documentation

CreateSpring()

void CRagdoll::CreateSpring ( ePoint e0, ePoint e1, float fRest )

private

Create a spring joining two ragdoll points.

Parameters

e0	Enumerated type of a point.
e1	Enumerated type of a point.
fRest	Spring restitution.

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CreateStick()

void CRagdoll::CreateStick ( ePoint e0, ePoint e1 )

private

Create a stick joining two ragdoll points.

Parameters

e0	Enumerated type of a point.
e1	Enumerated type of a point.

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DeliverImpulse()

void CRagdoll::DeliverImpulse ( ePoint ePt, float angle, float magnitude )

private

Deliver an impulse to a point along a vector, given the vector's orientation angle and its magnitude.

Parameters

ePt	Enumerated type of a ragdoll point.
angle	Angle of impulse.
magnitude	Magnitude of impulse.

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GetPos()

const Vector2 & CRagdoll::GetPos ( ePoint ePt ) const

private

Reader function for the position of a ragdoll point.

Parameters

ePt	Enumerated type of a ragdoll point.

Returns

Position of the point in render space.

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GetRadius()

const float CRagdoll::GetRadius ( ePoint ePt ) const

private

Reader function for the radius of the ball at a ragdoll point.

Parameters

ePt	Enumerated type of a ragdoll point.

Returns

Radius of the point in render space.

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isOnLeftSide()

const bool CRagdoll::isOnLeftSide ( ) const

private

The ragdoll is on its left side if both its left hand and left elbow are one radius above the bottom of the window.

Returns

true if the ragdoll is on its left side.

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isOnRightSide()

const bool CRagdoll::isOnRightSide ( ) const

private

The ragdoll is on its right side if both its right hand and right elbow are one radius above the bottom of the window.

Returns

true if the ragdoll is on its right side.

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isStanding()

const bool CRagdoll::isStanding ( ) const

private

The ragdoll is standing upright if the vector from its gut to its sternum is approximately vertical and both feet are one radius above the bottom of the window.

Returns

true if the ragdoll is standing upright.

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isTippingLeft()

const bool CRagdoll::isTippingLeft ( ) const

private

The ragdoll is tipping left if its left foot is one radius above the ground and its right foot is at least 1.5 times and at most 3 times its radius above the bottom of the window.

Returns

true if the ragdoll is tipping left.

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isTippingRight()

const bool CRagdoll::isTippingRight ( ) const

private

The ragdoll is tipping right if its right foot is one radius above the ground and its left foot is at least 1.5 times and at most 3 times its radius above the bottom of the window.

Returns

true if the ragdoll is tipping right.

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SetRelativePos()

void CRagdoll::SetRelativePos ( ePoint eTarget, ePoint eFrom, float x, float y )

private

Set the position of a point in m_pPos relative to another point which is assumed to already be set in m_pPos.

Parameters

eTarget	Enumerated type of a point whose entry in m_pPos is to be set.
eFrom	Enumerated type of a point whose entry in m_pPos is already set.
x	Horizontal offset.
y	Vertical offset.

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StandUp()

void CRagdoll::StandUp

(

)

Every 0.4-0.6 seconds (chosen pseudoandomly), the ragdoll attempts to stand upright at the center of the screen. If it is on its side, then it attempts to fling itself into the air and get upright. If one foot is on the ground, then it hops to attempt to right itself unless it is tipping over too much. If it is standing upright, then it attempts to shuffle over to near the middle of the window.

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