A reimplementation of Mario Kart Wii's physics engine in C++
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Kinoko::Field::ObjectCowFollower Class Referencefinal

#include <ObjectCow.hh>

Description

A cow that follows a leader by sharing the same rail.

Definition at line 96 of file ObjectCow.hh.

Inheritance diagram for Kinoko::Field::ObjectCowFollower:

Public Member Functions

 ObjectCowFollower (const System::MapdataGeoObj &params, const EGG::Vector3f &pos, f32 initRot)
void init () override
void calc () override
u32 loadFlags () const override
void loadRail () override
Public Member Functions inherited from Kinoko::Field::ObjectCow
 ObjectCow (const System::MapdataGeoObj &params)
Kart::Reaction onCollision (Kart::KartObject *kartObj, Kart::Reaction reactionOnKart, Kart::Reaction reactionOnObj, EGG::Vector3f &hitDepth) override
Public Member Functions inherited from Kinoko::Field::ObjectCollidable
 ObjectCollidable (const System::MapdataGeoObj &params)
 ObjectCollidable (const char *name, const EGG::Vector3f &pos, const EGG::Vector3f &rot, const EGG::Vector3f &scale)
void load () override
void calcCollisionTransform () override
f32 getCollisionRadius () const override
 Finds the radius that fits fully in a BoxColUnit.
virtual void loadAABB (f32 maxSpeed)
virtual void loadAABB (f32 radius, f32 maxSpeed)
virtual void processKartReactions (Kart::KartObject *kartObj, Kart::Reaction &reactionOnKart, Kart::Reaction &reactionOnObj)
virtual void onWallCollision (Kart::KartObject *, const EGG::Vector3f &)
virtual void onObjectCollision (Kart::KartObject *)
virtual bool checkCollision (ObjectCollisionBase *lhs, EGG::Vector3f &dist)
virtual const EGG::Vector3fgetCollisionTranslation () const
virtual ObjectCollisionBasecollision () const
Public Member Functions inherited from Kinoko::Field::ObjectBase
 ObjectBase (const System::MapdataGeoObj &params)
 ObjectBase (const char *name, const EGG::Vector3f &pos, const EGG::Vector3f &rot, const EGG::Vector3f &scale)
virtual void calcModel ()
virtual const char * getResources () const
virtual void loadGraphics ()
virtual void loadAnims ()
virtual const char * getName () const
virtual const char * getKclName () const
virtual void resize (f32 radius, f32 maxSpeed)
virtual void unregisterCollision ()
virtual void disableCollision () const
virtual void enableCollision () const
virtual const BoxColUnitgetUnit () const
const RailInterpolatorrailInterpolator () const
virtual const EGG::Vector3fgetPosition () const
virtual ObjectId id () const
void setPos (const EGG::Vector3f &pos)
void addPos (const EGG::Vector3f &v)
void subPos (const EGG::Vector3f &v)
void setScale (const EGG::Vector3f &scale)
void setScale (f32 scale)
void setRot (const EGG::Vector3f &rot)
void setRotNoFlag (const EGG::Vector3f &rot)
void addRot (const EGG::Vector3f &v)
void subRot (const EGG::Vector3f &v)
void setTransform (const EGG::Matrix34f &mat)
const EGG::Vector3fpos () const
const EGG::Vector3fscale () const
const EGG::Vector3frot () const
const EGG::Matrix34ftransform () const

Private Member Functions

void enterWait ()
void enterFreeRoam ()
void enterFollowLeader ()
void calcWait ()
void calcFreeRoam ()
void calcFollowLeader ()

Private Attributes

const EGG::Vector3f m_posOffset
RailInterpolatorm_rail
u16 m_waitFrames
 Number of frames the cow will stand still for.
f32 m_topSpeed
 The speed the cow will accelerate up to.
bool m_bStopping
 Set when the cow is coming to a stop.
f32 m_railSegThreshold
 The rail segmentT at which a cow will change to state 2.

Static Private Attributes

static constexpr f32 BASE_TOP_SPEED = 2.0f
static constexpr f32 TOP_SPEED_VARIANCE = 4.0f - 2.0f
static constexpr f32 DIST_THRESHOLD = 200.0f
 Distance at which a cow is considered close enough to the rail to stop moving.
static constexpr std::array< StateManagerEntry, 3 > STATE_ENTRIES

Additional Inherited Members

Public Types inherited from Kinoko::Field::ObjectBase
enum class  eFlags {
  Position = 0 ,
  Rotation = 1 ,
  Matrix = 2 ,
  Scale = 3
}
typedef EGG::TBitFlag< u16, eFlags > Flags
Protected Member Functions inherited from Kinoko::Field::ObjectCow
virtual void calcFloor ()
void setup ()
void calcPos ()
f32 setTarget (const EGG::Vector3f &v)
Protected Member Functions inherited from Kinoko::Field::ObjectCollidable
void createCollision () override
virtual const EGG::Vector3fcollisionCenter () const
void registerManagedObject ()
Protected Member Functions inherited from Kinoko::Field::ObjectBase
void calcTransform ()
void calcRotLock ()
void linkAnims (const std::span< const char * > &names, const std::span< Render::AnmType > types)
void setMatrixTangentTo (const EGG::Vector3f &up, const EGG::Vector3f &tangent)
void setMatrixFromOrthonormalBasisAndPos (const EGG::Vector3f &v)
Protected Member Functions inherited from Kinoko::Field::StateManager
 StateManager (void *obj, const std::span< const StateManagerEntry > &entries)
void calc ()
Static Protected Member Functions inherited from Kinoko::Field::ObjectCow
static EGG::Vector3f Interpolate (f32 t, const EGG::Vector3f &v0, const EGG::Vector3f &v1)
Static Protected Member Functions inherited from Kinoko::Field::ObjectBase
static f32 CheckPointAgainstLineSegment (const EGG::Vector3f &point, const EGG::Vector3f &a, const EGG::Vector3f &b)
 Calculates on what side of line segment ab point lies.
static EGG::Vector3f RotateXZByYaw (f32 angle, const EGG::Vector3f &v)
 Rotates a vector around the Y-axis and returns the XZ-plane portion of the vector.
static EGG::Vector3f RotateAxisAngle (f32 angle, const EGG::Vector3f &axis, const EGG::Vector3f &v1)
static void SetRotTangentHorizontal (EGG::Matrix34f &mat, const EGG::Vector3f &up, const EGG::Vector3f &tangent)
static EGG::Matrix34f OrthonormalBasis (const EGG::Vector3f &v)
static EGG::Matrix34f RailOrthonormalBasis (const RailInterpolator &railInterpolator)
static EGG::Vector3f AdjustVecForward (f32 sidewaysScalar, f32 forwardScalar, f32 minSpeed, const EGG::Vector3f &src, EGG::Vector3f forward)
static f32 CalcParabolicDisplacement (f32 initVel, f32 accel, u32 frame)
 Solves the standard kinematic equation \(y(t) = v_0\, t - \frac{1}{2} a t^{2}\).
static EGG::Vector3f Interpolate (f32 t, const EGG::Vector3f &v0, const EGG::Vector3f &v1)
Protected Attributes inherited from Kinoko::Field::ObjectCow
u32 m_startFrame
 The frame the cow will start moving.
EGG::Vector3f m_tangent
EGG::Vector3f m_prevTangent
EGG::Vector3f m_up
EGG::Vector3f m_velocity
f32 m_xzSpeed
 XZ plane length of m_velocity.
f32 m_tangentFactor
EGG::Vector3f m_floorNrm
EGG::Vector3f m_state1TargetPos
 Calculated in enterState1.
EGG::Vector3f m_targetDir
EGG::Vector3f m_upForce
 Used by calcPos to counteract gravity.
f32 m_interpRate
Protected Attributes inherited from Kinoko::Field::ObjectCollidable
ObjectCollisionBasem_collision
Protected Attributes inherited from Kinoko::Field::ObjectBase
Render::DrawMdlm_drawMdl
Abstract::g3d::ResFilem_resFile
ObjectId m_id
RailInterpolatorm_railInterpolator
BoxColUnitm_boxColUnit
const System::MapdataGeoObjm_mapObj
Protected Attributes inherited from Kinoko::Field::StateManager
u16 m_currentStateId
s32 m_nextStateId
u32 m_currentFrame
std::span< u16 > m_entryIds
std::span< const StateManagerEntrym_entries
void * m_obj
Static Protected Attributes inherited from Kinoko::Field::ObjectCow
static constexpr EGG::Vector3f GRAVITY_FORCE = EGG::Vector3f(0.0f, 2.0f, 0.0f)

Constructor & Destructor Documentation

◆ ObjectCowFollower()

Kinoko::Field::ObjectCowFollower::ObjectCowFollower ( const System::MapdataGeoObj & params,
const EGG::Vector3f & pos,
f32 initRot )
0x806BDD48

Definition at line 249 of file ObjectCow.cc.

◆ ~ObjectCowFollower()

Kinoko::Field::ObjectCowFollower::~ObjectCowFollower ( )
overridedefault0x806BDFF4

Member Function Documentation

◆ calc()

void Kinoko::Field::ObjectCowFollower::calc ( )
overridevirtual0x806BE1A8

Reimplemented from Kinoko::Field::ObjectBase.

Definition at line 276 of file ObjectCow.cc.

◆ calcFollowLeader()

void Kinoko::Field::ObjectCowFollower::calcFollowLeader ( )
private0x806BE9CC

Definition at line 400 of file ObjectCow.cc.

◆ calcFreeRoam()

void Kinoko::Field::ObjectCowFollower::calcFreeRoam ( )
private0x806BE794

Definition at line 376 of file ObjectCow.cc.

◆ calcWait()

void Kinoko::Field::ObjectCowFollower::calcWait ( )
private0x806BE580

Definition at line 365 of file ObjectCow.cc.

◆ enterFollowLeader()

void Kinoko::Field::ObjectCowFollower::enterFollowLeader ( )
private0x806BE930

Definition at line 356 of file ObjectCow.cc.

◆ enterFreeRoam()

void Kinoko::Field::ObjectCowFollower::enterFreeRoam ( )
private0x806BE62C

Definition at line 329 of file ObjectCow.cc.

◆ enterWait()

void Kinoko::Field::ObjectCowFollower::enterWait ( )
private0x806BE4E8

Definition at line 317 of file ObjectCow.cc.

◆ init()

void Kinoko::Field::ObjectCowFollower::init ( )
overridevirtual0x806BE060

Reimplemented from Kinoko::Field::ObjectBase.

Definition at line 260 of file ObjectCow.cc.

◆ loadFlags()

u32 Kinoko::Field::ObjectCowFollower::loadFlags ( ) const
inlinenodiscardoverridevirtual0x806BF424

Reimplemented from Kinoko::Field::ObjectBase.

Definition at line 107 of file ObjectCow.hh.

◆ loadRail()

void Kinoko::Field::ObjectCowFollower::loadRail ( )
inlineoverridevirtual0x806BF420

Reimplemented from Kinoko::Field::ObjectBase.

Definition at line 112 of file ObjectCow.hh.

Member Data Documentation

◆ BASE_TOP_SPEED

f32 Kinoko::Field::ObjectCowFollower::BASE_TOP_SPEED = 2.0f
staticconstexprprivate

Definition at line 130 of file ObjectCow.hh.

◆ DIST_THRESHOLD

f32 Kinoko::Field::ObjectCowFollower::DIST_THRESHOLD = 200.0f
staticconstexprprivate

Distance at which a cow is considered close enough to the rail to stop moving.

Definition at line 134 of file ObjectCow.hh.

◆ m_bStopping

bool Kinoko::Field::ObjectCowFollower::m_bStopping
private

Set when the cow is coming to a stop.

Definition at line 127 of file ObjectCow.hh.

◆ m_posOffset

const EGG::Vector3f Kinoko::Field::ObjectCowFollower::m_posOffset
private

Definition at line 123 of file ObjectCow.hh.

◆ m_rail

RailInterpolator* Kinoko::Field::ObjectCowFollower::m_rail
private

Definition at line 124 of file ObjectCow.hh.

◆ m_railSegThreshold

f32 Kinoko::Field::ObjectCowFollower::m_railSegThreshold
private

The rail segmentT at which a cow will change to state 2.

Definition at line 128 of file ObjectCow.hh.

◆ m_topSpeed

f32 Kinoko::Field::ObjectCowFollower::m_topSpeed
private

The speed the cow will accelerate up to.

Definition at line 126 of file ObjectCow.hh.

◆ m_waitFrames

u16 Kinoko::Field::ObjectCowFollower::m_waitFrames
private

Number of frames the cow will stand still for.

Definition at line 125 of file ObjectCow.hh.

◆ STATE_ENTRIES

std::array<StateManagerEntry, 3> Kinoko::Field::ObjectCowFollower::STATE_ENTRIES
staticconstexprprivate
Initial value:
= {{
{StateEntry<ObjectCowFollower, &ObjectCowFollower::enterWait,
&ObjectCowFollower::calcWait>(0)},
{StateEntry<ObjectCowFollower, &ObjectCowFollower::enterFreeRoam,
&ObjectCowFollower::calcFreeRoam>(1)},
{StateEntry<ObjectCowFollower, &ObjectCowFollower::enterFollowLeader,
&ObjectCowFollower::calcFollowLeader>(2)},
}}
A cow that follows a leader by sharing the same rail.
Definition ObjectCow.hh:96

Definition at line 136 of file ObjectCow.hh.

◆ TOP_SPEED_VARIANCE

f32 Kinoko::Field::ObjectCowFollower::TOP_SPEED_VARIANCE = 4.0f - 2.0f
staticconstexprprivate

Definition at line 131 of file ObjectCow.hh.