ppu

Documentation

Index

• Constants
• type Background
  • func NewBackground() Background
  • func (this *Background) Clear()
• type PaletteRam
  • func NewPaletteRam() PaletteRam
  • func (this PaletteRam) Read() []byte
  • func (this *PaletteRam) Write(addr uint16, data byte)
• type Ppu
  • func NewPpu(ppubus bus.PpuBus, interrupts *cpu_interrupts.Interrupts, ...) Ppu
  • func (this Ppu) Read(addr uint16) byte
  • func (this *Ppu) Run(cpuCycle int) bool
  • func (this *Ppu) TransferSprite(index uint16, data byte)
  • func (this *Ppu) Write(addr uint16, data byte)
• type RenderingData
  • func (this RenderingData) IsSetBackground() bool
  • func (this RenderingData) IsSetSprites() bool
• type Sprite
• type SpriteWithAttribute
  • func NewStripeWithAttribute(sprite Sprite, x byte, y byte, attribute byte, spriteId byte) SpriteWithAttribute
• type Tile

Constants

const CYCLES_PER_LINE = 341

const SPRITES_ARRAY_MAX = 64

const SPRITES_NUMBER = 0x100

Types

type Background

type Background struct {
	Tiles []Tile
}

func NewBackground

func NewBackground() Background

func (*Background) Clear

func (this *Background) Clear()

type PaletteRam

type PaletteRam struct {
	PaletteRam bus.Ram
}

func NewPaletteRam

func NewPaletteRam() PaletteRam

func (PaletteRam) Read

func (this PaletteRam) Read() []byte

func (*PaletteRam) Write

func (this *PaletteRam) Write(addr uint16, data byte)

type Ppu

type Ppu struct {
	Registers         []byte
	Cycle             int
	Line              int
	IsValidVramAddr   bool
	IsLowerVramAddr   bool
	SpriteRamAddr     uint16
	VramAddr          uint16
	Vram              bus.Ram
	VramReadBuf       byte
	SpriteRam         bus.Ram
	Bus               bus.PpuBus
	Background        Background
	Sprites           []SpriteWithAttribute
	RenderingData     RenderingData
	Palette           PaletteRam
	Interrupts        *cpu_interrupts.Interrupts
	IsHrizontalScroll bool
	ScrollX           byte
	ScrollY           byte
	IsHrizontalMirror bool
}

func NewPpu

func NewPpu(ppubus bus.PpuBus, interrupts *cpu_interrupts.Interrupts, isHrizontalMirror bool) Ppu

func (Ppu) Read

func (this Ppu) Read(addr uint16) byte

func (*Ppu) Run

func (this *Ppu) Run(cpuCycle int) bool

func (*Ppu) TransferSprite

func (this *Ppu) TransferSprite(index uint16, data byte)

func (*Ppu) Write

func (this *Ppu) Write(addr uint16, data byte)

type RenderingData

type RenderingData struct {
	Palette    []byte
	Background Background
	Sprites    []SpriteWithAttribute
}

func (RenderingData) IsSetBackground

func (this RenderingData) IsSetBackground() bool

func (RenderingData) IsSetSprites

func (this RenderingData) IsSetSprites() bool

type Sprite

type Sprite [8][8]byte

type SpriteWithAttribute

type SpriteWithAttribute struct {
	SpriteArry Sprite
	X          byte
	Y          byte
	Attribute  byte
	SpriteId   byte
	IsSet      bool //Spriteがセットされているか判定するgoNes独自パラメータ
}

func NewStripeWithAttribute

func NewStripeWithAttribute(sprite Sprite, x byte, y byte, attribute byte, spriteId byte) SpriteWithAttribute

type Tile

type Tile struct {
	Sprite    Sprite
	Scroll_x  byte
	Scroll_y  byte
	PaletteId int
}