game

type Button struct {
	Image     *Sprite
	Highlight *Sprite

	Active   bool
	Hovered  bool
	Clicked  bool
	Selected bool

	State engine.State
}

type Credit struct {
	Role *Sprite
	Name *Sprite
}

type Credits struct {
	Engine   *engine.Engine
	Resource *engine.Resource

	Fog  *Fog
	Dust *Dust

	ScrollSpeed float64

	Credits []*Credit
}

type Direction struct {
	X1     float32
	Y1     float32
	X2     float32
	Y2     float32
	Motion bool
	State  []bool
}

type Dot struct {
	Game *Game

	X      float64
	Y      float64
	DX     float64
	DY     float64
	Mass   float64
	Decay  float64 // Rate at which to reduce mass
	Type   int
	Active bool
}

type Dots struct {
	Game *Game
	Cfg  *engine.Config

	Bd int
	S  [4]float64

	// Slice of heat colors
	HeatColors []sdl.Color

	ShipDots []*Dot
	BangDots []*Dot

	ShipDotsColors []sdl.Color
	BangDotsColors []sdl.Color

	ShipDotsPoints map[int][]sdl.Point
	BangDotsPoints map[int][]sdl.Point
}

type Dust struct {
	Engine *engine.Engine
	Cfg    *engine.Config

	// Dust motes
	Motes map[sdl.Color][]*DustMote

	// Motes points
	MotesPoints map[sdl.Color][]sdl.Point
}

type DustMote struct {
	X float64
	Y float64
	Z float64
}

type Fog struct {
	Sprite

	Engine   *engine.Engine
	Resource *engine.Resource

	ScrollOffset float64

	Backgrounds map[int]*sdl.Texture
}

type Game struct {
	Engine   *engine.Engine
	Cfg      *engine.Config
	Resource *engine.Resource

	Life *Sprite

	FpsText  *Sprite
	TimeText *Sprite

	ShieldsText     *Sprite
	AttackText      *Sprite
	InvincibleText  *Sprite
	EngineBlastText *Sprite
	SlowdownText    *Sprite

	PausedText   *Sprite
	GameOverText *Sprite

	Fog    *Fog
	Dust   *Dust
	Dots   *Dots
	Ship   *Ship
	Rocks  *Rocks
	Powups *Powups

	State        int
	LastState    int
	StateTimeout float64

	Direction *Direction

	Score int
}

type Menu struct {
	Engine   *engine.Engine
	Resource *engine.Resource

	Fog  *Fog
	Dust *Dust

	Buttons      []*Button
	ButtonActive int

	TitleText *Sprite

	FadeTimer float64
}

type Options struct {
	Engine   *engine.Engine
	Resource *engine.Resource

	Fog  *Fog
	Dust *Dust

	Buttons      []*Button
	ButtonActive int

	YesText *Sprite
	NoText  *Sprite

	FadeTimer float64
}

type Powups struct {
	Game   *Game
	Engine *engine.Engine

	Powups []*Sprite

	Glow *Sprite

	Timeout int

	SpeedMin [4]float64
	SpeedMax [4]float64
}

type Rocks struct {
	Engine   *engine.Engine
	Cfg      *engine.Config
	Resource *engine.Resource

	Rocks      []*Sprite
	Prototypes []*Sprite

	Nrocks         int
	InitialRocks   int
	FinalRocks     int
	NrocksTimer    float64
	NrocksIncTicks float64
	CurrentRock    int

	Ti       [4]float64
	Rtimers  [4]float64
	SpeedMin [4]float64
	SpeedMax [4]float64
}

type Score struct {
	Name      string
	Time      int
	X         float64
	Y         float64
	Width     float64
	Height    float64
	Formatted string
}

type Scores struct {
	Engine   *engine.Engine
	Resource *engine.Resource

	Fog  *Fog
	Dust *Dust

	// Current score
	Current int

	// String from input
	TextInput string

	// Is passed score highscore
	IsHighScore bool

	// Continue to menu state after timeout if true
	Continue bool

	// If scores are loaded
	Loaded bool

	// New hiscore text
	HiScoreText      *Sprite
	HiScoreEnterText *Sprite

	// Loading text
	LoadingText *Sprite

	// List of scores
	Scores []Score

	// Timers
	FadeTimer  float64
	StateTimer float64
}

type Ship struct {
	Sprite

	Game *Game
	Cfg  *engine.Config

	Glow *Sprite

	Moving      bool
	Transparent bool

	StateTimeout  float64
	TranspTimeout float64

	LifePowText        *Sprite
	ShieldsPowText     *Sprite
	AttackPowText      *Sprite
	InvinciblePowText  *Sprite
	EngineBlastPowText *Sprite
	SlowdownPowText    *Sprite

	PowupTextScale   float64
	PowupTextTimeout float64
	PowupCurrent     int
	PowupTextActive  bool
}

type Sprite struct {
	Engine *engine.Engine

	Type   int
	Flags  int
	X      float64
	Y      float64
	DX     float64
	DY     float64
	Width  float64
	Height float64
	Frame  uint32
	Active bool

	Texture *sdl.Texture
	Surface *sdl.Surface

	// Explosion
	Exp1      *Sprite
	Exp2      *Sprite
	ExpActive bool
	ExpFrame  int

	// Rock extras
	Life      int
	Direction int

	// Ship extras
	Lives int
	Jets  int
	State int
}