pt

package
v0.0.0-...-2351b9c Latest Latest
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 Go to latest Published: Sep 29, 2023 License: MIT Imports: 11 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func AreColliding 

func AreColliding(h1, h2 Hitbox) bool

Return true if two hitboxes are currently colliding where colliding means either they overlap or their surfaces are touching

func Run 

func Run(name string, w, h int, level LevelIface)

Types

type Game 

type Game struct {
	Name   string
	Width  int
	Height int
	Level  LevelIface
	Image  *image.RGBA
	Debug  bool
}

func New 

func New(name string, w, h int, level LevelIface) *Game

func (*Game) Draw 

func (g *Game) Draw(screen *ebiten.Image)

func (*Game) Layout 

func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int)

func (*Game) Update 

func (g *Game) Update() error

type Hitbox 

type Hitbox struct {
	Solid bool // Should this hitbox be included in collision detection
	// Two points representing corner vertices of the hitbox in 3D space
	BV1 Vec
	BV2 Vec
}

type Kinematics 

type Kinematics struct {
	Pos Vec
	Vel Vec
	Acc Vec
}

type Level 

type Level struct {
	Object
}

func NewLevel 

func NewLevel() *Level

func (*Level) ChildrenByZ 

func (l *Level) ChildrenByZ() []ObjectIface

func (*Level) Draw 

func (l *Level) Draw(drawContext *gg.Context)

func (*Level) Update 

func (l *Level) Update() error

type LevelIface 

type LevelIface interface {
	ChildrenByZ() []ObjectIface
	Draw(drawContext *gg.Context)
	Update() error
}

type Object 

type Object struct {
	Name       string
	ID         ObjectID
	LK         Kinematics // Structure for linear kinematics (angular kinematics may be added later)
	HB         Hitbox
	UpdateFunc func() error
	Children   map[ObjectID]ObjectIface // If this object contains any children, they go in this map
}

***************************************

  • Functions implementing the interface * **************************************

Generic object implementing the ObjectIface interface

func NewObjAtPos 

func NewObjAtPos(name string, pos Vec) *Object

func NewObject 

func NewObject(name string) *Object

func (*Object) Accelerate 

func (o *Object) Accelerate(v Vec)

Adjust the object's velocity according to the given vector v

func (*Object) AddChildren 

func (o *Object) AddChildren(children ...ObjectIface)

func (*Object) CopyTo 

func (rdr *Object) CopyTo(wrtr *Object)

func (*Object) Draw 

func (o *Object) Draw(drawContext *gg.Context)

Intended to be implemented by the specific object

func (*Object) GenID 

func (o *Object) GenID() error

func (*Object) GetAcc 

func (o *Object) GetAcc() Vec

Get the velocity Vec of the object

func (*Object) GetChildren 

func (o *Object) GetChildren() []ObjectIface

func (*Object) GetID 

func (o *Object) GetID() ObjectID

func (*Object) GetKinematics 

func (o *Object) GetKinematics() Kinematics

func (*Object) GetName 

func (o *Object) GetName() string

func (*Object) GetPos 

func (o *Object) GetPos() Vec

Get the velocity Vec of the object

func (*Object) GetPosOffset 

func (o1 *Object) GetPosOffset(o2 ObjectIface) Vec

Get the offset position vector of o1 as compared to o2

func (*Object) GetVel 

func (o *Object) GetVel() Vec

Get the velocity Vec of the object

func (*Object) Init 

func (o *Object) Init()

func (*Object) Move 

func (o *Object) Move(v Vec)

Move an object relatively according to the given vector v.

func (*Object) ObjAddChildren 

func (o *Object) ObjAddChildren(children ...ObjectIface)

func (*Object) ObjDrawPos 

func (o *Object) ObjDrawPos(dc *gg.Context, at Vec)

func (*Object) ObjGenID 

func (o *Object) ObjGenID() error

If the object's ID is unset (ie. zero), generate a new unique object ID

func (*Object) ObjGetAcc 

func (o *Object) ObjGetAcc() Vec

Get the velocity Vec of the object

func (*Object) ObjGetChildren 

func (o *Object) ObjGetChildren() []ObjectIface

Recursively

func (*Object) ObjGetID 

func (o *Object) ObjGetID() ObjectID

func (*Object) ObjGetKinematics 

func (o *Object) ObjGetKinematics() Kinematics

func (*Object) ObjGetName 

func (o *Object) ObjGetName() string

func (*Object) ObjGetPos 

func (o *Object) ObjGetPos() Vec

func (*Object) ObjGetVel 

func (o *Object) ObjGetVel() Vec

Get the velocity Vec of the object

func (*Object) ObjInit 

func (o *Object) ObjInit()

func (*Object) ObjRemoveChildren 

func (o *Object) ObjRemoveChildren(children ...ObjectIface)

func (*Object) ObjSetAcc 

func (o *Object) ObjSetAcc(acc Vec)

Set acceleration of the object and of all child objects

func (*Object) ObjSetChildren 

func (o *Object) ObjSetChildren(children []ObjectIface)

func (*Object) ObjSetKinematics 

func (o *Object) ObjSetKinematics(lk Kinematics)

func (*Object) ObjSetPos 

func (o *Object) ObjSetPos(pos Vec)

Set the position of the object and the relative position of all child objects

func (*Object) ObjSetVel 

func (o *Object) ObjSetVel(vel Vec)

Set velocity of the object and of all child objects

func (*Object) ObjUpdate 

func (o *Object) ObjUpdate() error

func (*Object) RemoveChildren 

func (o *Object) RemoveChildren(children ...ObjectIface)

func (*Object) SetAcc 

func (o *Object) SetAcc(acc Vec)

Get the velocity Vec of the object

func (*Object) SetChildren 

func (o *Object) SetChildren(children []ObjectIface)

func (*Object) SetKinematics 

func (o *Object) SetKinematics(lk Kinematics)

func (*Object) SetPos 

func (o *Object) SetPos(pos Vec)

Get the velocity Vec of the object

func (*Object) SetVel 

func (o *Object) SetVel(vel Vec)

Get the velocity Vec of the object

func (*Object) Update 

func (o *Object) Update() error

func (*Object) UpdateKinematics 

func (o *Object) UpdateKinematics()

Convenience function update velocity from acceleration and position from velocity

func (*Object) UpdatePos 

func (o *Object) UpdatePos()

Update this object's position using this object's velocity. Does not recursively call child objects

func (*Object) UpdateVel 

func (o *Object) UpdateVel()

Update this object's velocity using this object's acceleration. Does not recursively call child objects

type ObjectID 

type ObjectID uint64

func UniqueObjectID 

func UniqueObjectID() ObjectID

type ObjectIface 

type ObjectIface interface {
	// Accounting functions
	Init()
	GetName() string
	GetID() ObjectID
	GenID() error

	// Movement Functions (position, velocity, acceleration)
	GetPos() Vec
	SetPos(Vec)
	Move(Vec)
	GetPosOffset(ObjectIface) Vec
	GetVel() Vec
	SetVel(Vec)
	GetAcc() Vec
	SetAcc(Vec)
	GetKinematics() Kinematics
	SetKinematics(Kinematics)

	// Child functions
	GetChildren() []ObjectIface
	SetChildren([]ObjectIface)
	AddChildren(...ObjectIface)
	RemoveChildren(...ObjectIface)

	// Game loop functions
	Update() error
	Draw(drawContext *gg.Context)
}

type Vec 

type Vec struct {
	X, Y, Z float64
}

These coordinates are restricted based on a 2D representation. The reference coordinate 0, 0, 0 is at the top left corner of the screen. X has positive going to the right. Y has positive going down. Z functions as depth, and has positive going out of the screen toward the player

func (Vec) Add 

func (v1 Vec) Add(v2 Vec) Vec

Add two Vecs and return the resulting Vec struct

func (Vec) RotateXY180 

func (v Vec) RotateXY180() Vec

Uses a vector rotate trick to rotate the 2D vector of just X and Y around 0, 0.

func (Vec) RotateXY180Around 

func (v Vec) RotateXY180Around(r Vec) Vec

func (Vec) RotateXY270 

func (v Vec) RotateXY270() Vec

Uses a vector rotate trick to rotate the 2D vector of just X and Y around 0, 0.

func (Vec) RotateXY270Around 

func (v Vec) RotateXY270Around(r Vec) Vec

func (Vec) RotateXY90 

func (v Vec) RotateXY90() Vec

Uses a vector rotate trick to rotate the 2D vector of just X and Y around 0, 0.

func (Vec) RotateXY90Around 

func (v Vec) RotateXY90Around(r Vec) Vec

func (Vec) Scale 

func (v Vec) Scale(a float64) Vec

func (Vec) Subtract 

func (v1 Vec) Subtract(v2 Vec) Vec

Subtract v2 from v1 and return the Vec result

func (Vec) Thousandths 

func (v Vec) Thousandths() Vec

Round each dimension to the nearest 1000th to avoid arithmetic errors with floating points from propagating

func (Vec) ToInt 

func (v Vec) ToInt() (int, int, int)

func (Vec) ToInt64 

func (v Vec) ToInt64() (int64, int64, int64)

func (Vec) ToString 

func (v Vec) ToString() string

Source Files

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