engine

package
v3.0.3-rc+incompatible Latest Latest
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 Go to latest Published: Jun 3, 2018 License: MIT Imports: 5 Imported by: 27

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var ErrRetriesLimit = errors.New("retries limit was reached")
View Source 
var FindRetriesNumber = 32

Functions

func ValidDirection 

func ValidDirection(dir Direction) bool

ValidDirection returns true if passed direction is valid

Types

type Area 

type Area struct {
	// contains filtered or unexported fields
}

func NewArea 

func NewArea(width, height uint8) (Area, error)

func NewUsefulArea 

func NewUsefulArea(width, height uint8) (Area, error)

func (Area) Contains 

func (a Area) Contains(dot Dot) bool

func (Area) Height 

func (a Area) Height() uint8

func (Area) MarshalJSON 

func (a Area) MarshalJSON() ([]byte, error)

Implementing json.Marshaler interface

func (Area) Navigate 

func (a Area) Navigate(dot Dot, dir Direction, dis uint8) (Dot, error)

Navigate calculates and returns dot placed on distance dis dots from passed dot in direction dir

func (Area) NewRandomDot 

func (a Area) NewRandomDot(x, y uint8) Dot

NewRandomDot generates random dot on area with starting coordinates X and Y

func (Area) NewRandomRect 

func (a Area) NewRandomRect(rw, rh, sx, sy uint8) (*Rect, error)

func (Area) Size 

func (a Area) Size() uint16

Size returns area size

func (Area) Width 

func (a Area) Width() uint8

type Direction 

type Direction uint8

Direction indicates movement direction 

const (
	DirectionNorth Direction = iota
	DirectionEast
	DirectionSouth
	DirectionWest
)

func CalculateDirection 

func CalculateDirection(from, to Dot) Direction

CalculateDirection calculates direction by two passed dots

func RandomDirection 

func RandomDirection() Direction

RandomDirection returns random direction

func (Direction) MarshalJSON 

func (dir Direction) MarshalJSON() ([]byte, error)

Implementing json.Marshaler interface

func (Direction) Reverse 

func (dir Direction) Reverse() (Direction, error)

Reverse reverses direction

func (Direction) String 

func (dir Direction) String() string

type Dot 

type Dot struct {
	X uint8
	Y uint8
}

func (Dot) DistanceTo 

func (from Dot) DistanceTo(to Dot) (res uint16)

DistanceTo calculates distance between two dots

func (Dot) Equals 

func (d1 Dot) Equals(d2 Dot) bool

Equals compares two dots

func (Dot) MarshalJSON 

func (d Dot) MarshalJSON() ([]byte, error)

Implementing json.Marshaler interface

func (Dot) String 

func (d Dot) String() string

type ErrAreaNotContainsDot 

type ErrAreaNotContainsDot struct {
	Dot Dot
}

func (*ErrAreaNotContainsDot) Error 

func (e *ErrAreaNotContainsDot) Error() string

type ErrDelete 

type ErrDelete struct {
	Err error
}

func (*ErrDelete) Error 

func (e *ErrDelete) Error() string

type ErrDirectionMarshal 

type ErrDirectionMarshal struct {
	Err error
}

func (*ErrDirectionMarshal) Error 

func (e *ErrDirectionMarshal) Error() string

type ErrDotsOccupied 

type ErrDotsOccupied struct {
	Dots []Dot // List of occupied dots
}

func (*ErrDotsOccupied) Error 

func (e *ErrDotsOccupied) Error() string

type ErrInvalidAreaSize 

type ErrInvalidAreaSize struct {
	Width  uint8
	Height uint8
}

func (*ErrInvalidAreaSize) Error 

func (e *ErrInvalidAreaSize) Error() string

type ErrInvalidDirection 

type ErrInvalidDirection struct {
	Direction Direction
}

func (*ErrInvalidDirection) Error 

func (e *ErrInvalidDirection) Error() string

type ErrLocate 

type ErrLocate struct {
	Err error
}

func (*ErrLocate) Error 

func (e *ErrLocate) Error() string

type ErrLocated 

type ErrLocated struct {
	Location Location
}

func (*ErrLocated) Error 

func (e *ErrLocated) Error() string

type ErrNavigation 

type ErrNavigation struct {
	Err error
}

func (*ErrNavigation) Error 

func (e *ErrNavigation) Error() string

type ErrNotLocated 

type ErrNotLocated struct {
	Location Location
}

func (*ErrNotLocated) Error 

func (e *ErrNotLocated) Error() string

type ErrRelocate 

type ErrRelocate struct {
	Err error
}

func (*ErrRelocate) Error 

func (e *ErrRelocate) Error() string

type ErrRelocateAvailableDots 

type ErrRelocateAvailableDots struct {
	Err error
}

func (*ErrRelocateAvailableDots) Error 

func (e *ErrRelocateAvailableDots) Error() string

type ErrReverseDirection 

type ErrReverseDirection struct {
	Err error
}

func (ErrReverseDirection) Error 

func (e ErrReverseDirection) Error() string

type Location 

type Location []Dot

Location is set of dots

func (Location) Add 

func (l Location) Add(dot Dot) Location

func (Location) Contains 

func (l Location) Contains(dot Dot) bool

contains returns true if object contains passed dot

func (Location) Copy 

func (l Location) Copy() Location

func (Location) Delete 

func (l Location) Delete(dot Dot) Location

Delete deletes dot from object

func (Location) Difference 

func (l1 Location) Difference(l2 Location) Location

func (Location) Dot 

func (l Location) Dot(i uint16) Dot

func (Location) DotCount 

func (l Location) DotCount() uint16

func (Location) Empty 

func (l Location) Empty() bool

func (Location) Equals 

func (l1 Location) Equals(l2 Location) bool

func (Location) EqualsStrict 

func (l1 Location) EqualsStrict(l2 Location) bool

func (Location) Intersection 

func (l1 Location) Intersection(l2 Location) (intersection Location)

func (Location) Reverse 

func (l Location) Reverse() Location

TODO: Remove this method (?) Reverse reverses dot sequence in object

type Rect 

type Rect struct {
	// contains filtered or unexported fields
}

func NewRect 

func NewRect(x, y, w, h uint8) Rect

NewRect creates rect

func (Rect) ContainsDot 

func (r Rect) ContainsDot(d Dot) bool

func (Rect) ContainsRect 

func (r1 Rect) ContainsRect(r2 Rect) bool

func (Rect) Dot 

func (r Rect) Dot(i uint16) Dot

func (Rect) DotCount 

func (r Rect) DotCount() uint16

func (Rect) Dots 

func (r Rect) Dots() []Dot

func (Rect) Equals 

func (r1 Rect) Equals(r2 Rect) bool

func (Rect) Height 

func (r Rect) Height() uint8

func (Rect) Location 

func (r Rect) Location() Location

func (Rect) MarshalJSON 

func (r Rect) MarshalJSON() ([]byte, error)

Implementing json.Marshaler interface

func (Rect) Width 

func (r Rect) Width() uint8

type Scene 

type Scene struct {
	// contains filtered or unexported fields
}

Scene contains locations

func NewScene 

func NewScene(width, height uint8) (*Scene, error)

NewScene returns new empty scene

func (*Scene) Delete 

func (s *Scene) Delete(location Location) *ErrDelete

Delete deletes passed location from scene and returns error if there is a problem

func (*Scene) DotOccupied 

func (s *Scene) DotOccupied(dot Dot) bool

func (*Scene) GetLocationByDot 

func (s *Scene) GetLocationByDot(dot Dot) Location

func (*Scene) Height 

func (s *Scene) Height() uint8

func (*Scene) Locate 

func (s *Scene) Locate(location Location) *ErrLocate

Locate tries to create location to scene

func (*Scene) LocateAvailableDots 

func (s *Scene) LocateAvailableDots(location Location) Location

func (*Scene) LocateRandomDot 

func (s *Scene) LocateRandomDot() (Location, error)

func (*Scene) LocateRandomRect 

func (s *Scene) LocateRandomRect(rw, rh uint8) (Location, error)

func (*Scene) LocateRandomRectMargin 

func (s *Scene) LocateRandomRectMargin(rw, rh, margin uint8) (Location, error)

func (*Scene) Located 

func (s *Scene) Located(location Location) bool

func (*Scene) Navigate 

func (s *Scene) Navigate(dot Dot, dir Direction, dis uint8) (Dot, error)

func (*Scene) Relocate 

func (s *Scene) Relocate(old, new Location) *ErrRelocate

func (*Scene) RelocateAvailableDots 

func (s *Scene) RelocateAvailableDots(old, new Location) (Location, *ErrRelocateAvailableDots)

func (*Scene) Size 

func (s *Scene) Size() uint16

func (*Scene) Width 

func (s *Scene) Width() uint8

Source Files

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