Golang ecs.NewEntity函数代码示例

func (pong *PongGame) Setup(w *ecs.World) {
	engi.SetBg(0x2d3739)
	w.AddSystem(&engi.RenderSystem{})
	w.AddSystem(&engi.CollisionSystem{})
	w.AddSystem(&SpeedSystem{})
	w.AddSystem(&ControlSystem{})
	w.AddSystem(&BallSystem{})
	w.AddSystem(&ScoreSystem{})

	basicFont = (&engi.Font{URL: "Roboto-Regular.ttf", Size: 32, FG: color.NRGBA{255, 255, 255, 255}})
	if err := basicFont.CreatePreloaded(); err != nil {
		log.Fatalln("Could not load font:", err)
	}

	ball := ecs.NewEntity([]string{"RenderSystem", "CollisionSystem", "SpeedSystem", "BallSystem"})
	ballTexture := engi.Files.Image("ball.png")
	ballRender := engi.NewRenderComponent(ballTexture, engi.Point{2, 2}, "ball")
	ballSpace := &engi.SpaceComponent{engi.Point{(engi.Width() - ballTexture.Width()) / 2, (engi.Height() - ballTexture.Height()) / 2}, ballTexture.Width() * ballRender.Scale().X, ballTexture.Height() * ballRender.Scale().Y}
	ballCollision := &engi.CollisionComponent{Main: true, Solid: true}
	ballSpeed := &SpeedComponent{}
	ballSpeed.Point = engi.Point{300, 100}

	ball.AddComponent(ballRender)
	ball.AddComponent(ballSpace)
	ball.AddComponent(ballCollision)
	ball.AddComponent(ballSpeed)
	w.AddEntity(ball)

	score := ecs.NewEntity([]string{"RenderSystem", "ScoreSystem"})

	scoreRender := engi.NewRenderComponent(basicFont.Render(" "), engi.Point{1, 1}, "YOLO <3")

	scoreSpace := &engi.SpaceComponent{engi.Point{100, 100}, 100, 100}
	score.AddComponent(scoreRender)
	score.AddComponent(scoreSpace)
	w.AddEntity(score)

	schemes := []string{"WASD", ""}
	for i := 0; i < 2; i++ {
		paddle := ecs.NewEntity([]string{"RenderSystem", "CollisionSystem", "ControlSystem"})
		paddleTexture := engi.Files.Image("paddle.png")
		paddleRender := engi.NewRenderComponent(paddleTexture, engi.Point{2, 2}, "paddle")
		x := float32(0)
		if i != 0 {
			x = 800 - 16
		}

		paddleSpace := &engi.SpaceComponent{engi.Point{x, (engi.Height() - paddleTexture.Height()) / 2}, paddleRender.Scale().X * paddleTexture.Width(), paddleRender.Scale().Y * paddleTexture.Height()}
		paddleControl := &ControlComponent{schemes[i]}
		paddleCollision := &engi.CollisionComponent{Main: false, Solid: true}
		paddle.AddComponent(paddleRender)
		paddle.AddComponent(paddleSpace)
		paddle.AddComponent(paddleControl)
		paddle.AddComponent(paddleCollision)
		w.AddEntity(paddle)
	}
}

func (game *Game) Setup(w *ecs.World) {
	engi.SetBg(0x2d3739)

	// Add all of the systems
	w.AddSystem(&engi.RenderSystem{})
	w.AddSystem(&engi.CollisionSystem{})
	w.AddSystem(&DeathSystem{})
	w.AddSystem(&FallingSystem{})
	w.AddSystem(&ControlSystem{})
	w.AddSystem(&RockSpawnSystem{})

	// Create new entity subscribed to all the systems!
	guy := ecs.NewEntity([]string{"RenderSystem", "ControlSystem", "RockSpawnSystem", "CollisionSystem", "DeathSystem"})
	texture := engi.Files.Image("icon.png")
	render := engi.NewRenderComponent(texture, engi.Point{4, 4}, "guy")
	// Tell the collision system that this player is solid
	collision := &engi.CollisionComponent{Solid: true, Main: true}

	width := texture.Width() * render.Scale().X
	height := texture.Height() * render.Scale().Y

	space := &engi.SpaceComponent{engi.Point{(engi.Width() - width) / 2, (engi.Height() - height) / 2}, width, height}

	guy.AddComponent(render)
	guy.AddComponent(space)
	guy.AddComponent(collision)

	w.AddEntity(guy)
}

// generateBackground creates a background of green tiles - might not be the most efficient way to do this
func generateBackground() *ecs.Entity {
	rect := image.Rect(0, 0, int(worldWidth), int(worldHeight))
	img := image.NewNRGBA(rect)
	c1 := color.RGBA{102, 153, 0, 255}
	c2 := color.RGBA{102, 173, 0, 255}
	for i := rect.Min.X; i < rect.Max.X; i++ {
		for j := rect.Min.Y; j < rect.Max.Y; j++ {
			if i%40 > 20 {
				if j%40 > 20 {
					img.Set(i, j, c1)
				} else {
					img.Set(i, j, c2)
				}
			} else {
				if j%40 > 20 {
					img.Set(i, j, c2)
				} else {
					img.Set(i, j, c1)
				}
			}
		}
	}
	bgTexture := engi.NewImageObject(img)
	field := ecs.NewEntity([]string{"RenderSystem"})
	fieldRender := engi.NewRenderComponent(engi.NewTexture(bgTexture), engi.Point{1, 1}, "Background1")
	fieldRender.SetPriority(engi.Background)
	fieldSpace := &engi.SpaceComponent{engi.Point{0, 0}, worldWidth, worldHeight}
	field.AddComponent(fieldRender)
	field.AddComponent(fieldSpace)
	return field
}

func (game *GameWorld) CreateEntity() *ecs.Entity {
	entity := ecs.NewEntity([]string{"MouseSystem", "RenderSystem", "ControlSystem"})

	entity.AddComponent(generateBackground())
	entity.AddComponent(&engi.MouseComponent{})
	entity.AddComponent(&engi.SpaceComponent{engi.Point{0, 0}, boxWidth, boxHeight})

	return entity
}

func (game *Game) Setup(w *ecs.World) {
	engi.SetBg(0xFFFFFF)

	w.AddSystem(&engi.RenderSystem{})
	w.AddSystem(&engi.AudioSystem{})

	backgroundMusic := ecs.NewEntity([]string{"AudioSystem"})
	backgroundMusic.AddComponent(&engi.AudioComponent{File: "326488.wav", Repeat: true, Background: true})

	w.AddEntity(backgroundMusic)
}

// BenchmarkEntity1000 creates 1000 `Entity`s which all depend on the `NilSystem`
func BenchmarkEntity1000(b *testing.B) {
	const count = 1000

	preload := func() {}
	setup := func(w *ecs.World) {
		w.AddSystem(&NilSystem{})
		for i := 0; i < count; i++ {
			w.AddEntity(ecs.NewEntity([]string{"NilSystem"}))
		}
	}
	Bench(b, preload, setup)
}

func (game *GameWorld) CreateEntity(point *engi.Point, spriteSheet *engi.Spritesheet, action *engi.AnimationAction) *ecs.Entity {
	entity := ecs.NewEntity([]string{"AnimationSystem", "RenderSystem", "ControlSystem"})

	space := &engi.SpaceComponent{*point, 150, 150}
	render := engi.NewRenderComponent(spriteSheet.Cell(action.Frames[0]), engi.Point{3, 3}, "hero")
	animation := engi.NewAnimationComponent(spriteSheet.Drawables(), 0.1)
	animation.AddAnimationActions(actions)
	animation.SelectAnimationByAction(action)
	entity.AddComponent(render)
	entity.AddComponent(space)
	entity.AddComponent(animation)

	return entity
}

func NewRock(position engi.Point) *ecs.Entity {
	rock := ecs.NewEntity([]string{"RenderSystem", "FallingSystem", "CollisionSystem", "SpeedSystem"})

	texture := engi.Files.Image("rock.png")
	render := engi.NewRenderComponent(texture, engi.Point{4, 4}, "rock")
	space := &engi.SpaceComponent{position, texture.Width() * render.Scale().X, texture.Height() * render.Scale().Y}
	collision := &engi.CollisionComponent{Solid: true}

	rock.AddComponent(render)
	rock.AddComponent(space)
	rock.AddComponent(collision)

	return rock
}

// generateHUDBackground creates a violet HUD on the left side of the screen - might be inefficient
func generateHUDBackground(width, height float32) *ecs.Entity {
	rect := image.Rect(0, 0, int(width), int(height))
	img := image.NewNRGBA(rect)
	c1 := color.RGBA{255, 0, 255, 180}
	for i := rect.Min.X; i < rect.Max.X; i++ {
		for j := rect.Min.Y; j < rect.Max.Y; j++ {
			img.Set(i, j, c1)
		}
	}
	bgTexture := engi.NewImageObject(img)
	field := ecs.NewEntity([]string{"RenderSystem"})
	fieldRender := engi.NewRenderComponent(engi.NewTexture(bgTexture), engi.Point{1, 1}, "HUDBackground1")
	fieldRender.SetPriority(hudBackgroundPriority)
	fieldSpace := &engi.SpaceComponent{engi.Point{-1, -1}, width, height}
	field.AddComponent(fieldRender)
	field.AddComponent(fieldSpace)
	return field
}

func (game *GameWorld) Setup() {
	engi.SetBg(0x2d3739)

	game.AddSystem(&engi.RenderSystem{})

	gameMap := ecs.NewEntity([]string{"RenderSystem"})
	tilemap := engi.NewTilemap(
		[][]string{
			{"0", "2", "0"},
			{"4", "5", "1"},
			{"2", "3", "4"},
			{"5", "1", "2"}},
		engi.Files.Image("sheet"), 16)

	mapRender := engi.NewRenderComponent(tilemap, engi.Point{1, 1}, "map")
	mapSpace := &engi.SpaceComponent{engi.Point{100, 100}, 0, 0}
	gameMap.AddComponent(mapRender)
	gameMap.AddComponent(mapSpace)

	game.AddEntity(gameMap)
}

func (game *GameWorld) Setup(w *ecs.World) {
	engi.SetBg(0x2d3739)

	w.AddSystem(&engi.RenderSystem{})
	w.AddSystem(&HideSystem{})

	guy := ecs.NewEntity([]string{"RenderSystem", "HideSystem"})
	texture := engi.Files.Image("rock.png")
	render := engi.NewRenderComponent(texture, engi.Point{8, 8}, "guy")
	collision := &engi.CollisionComponent{Solid: true, Main: true}

	width := texture.Width() * render.Scale().X
	height := texture.Height() * render.Scale().Y

	space := &engi.SpaceComponent{engi.Point{(engi.Width() - width) / 2, (engi.Height() - height) / 2}, width, height}

	guy.AddComponent(render)
	guy.AddComponent(space)
	guy.AddComponent(collision)

	w.AddEntity(guy)
}

func (game *GameWorld) Setup(w *ecs.World) {
	engi.SetBg(0x2d3739)

	w.AddSystem(&engi.RenderSystem{})

	// Create an entity part of the Render and Scale systems
	guy := ecs.NewEntity([]string{"RenderSystem", "ScaleSystem"})
	// Retrieve a texture
	texture := engi.Files.Image("icon.png")

	// Create RenderComponent... Set scale to 8x, give lable "guy"
	render := engi.NewRenderComponent(texture, engi.Point{8, 8}, "guy")

	width := texture.Width() * render.Scale().X
	height := texture.Height() * render.Scale().Y

	space := &engi.SpaceComponent{engi.Point{0, 0}, width, height}

	guy.AddComponent(render)
	guy.AddComponent(space)

	w.AddEntity(guy)
}

func (game *RockScene) Setup(w *ecs.World) {
	engi.SetBg(0x2d3739)

	w.AddSystem(&engi.RenderSystem{})
	w.AddSystem(&ScaleSystem{})
	w.AddSystem(&SceneSwitcherSystem{NextScene: "IconScene", WaitTime: time.Second * 3})

	guy := ecs.NewEntity([]string{"RenderSystem", "ScaleSystem"})
	texture := engi.Files.Image("rock.png")
	render := engi.NewRenderComponent(texture, engi.Point{8, 8}, "rock")
	collision := &engi.CollisionComponent{Solid: true, Main: true}

	width := texture.Width() * render.Scale().X
	height := texture.Height() * render.Scale().Y

	space := &engi.SpaceComponent{engi.Point{(engi.Width() - width) / 2, (engi.Height() - height) / 2}, width, height}

	guy.AddComponent(render)
	guy.AddComponent(space)
	guy.AddComponent(collision)

	w.AddEntity(guy)
}

func (c *Calibrate) New(w *ecs.World) {
	ActiveCalibrateSystem = c
	c.System = ecs.NewSystem()
	c.World = w

	var err error

	c.Connection, err = gobci.Connect("")
	if err != nil {
		log.Fatal(err)
	}

	err = c.Connection.FlushData()
	if err != nil {
		log.Fatal("FlushData error: ", err)
	}

	// Get latest header info
	c.Header, err = c.Connection.GetHeader()
	if err != nil {
		log.Fatal("GetHeader error: ", err)
	}

	for i := uint32(0); i < c.Header.NChannels; i++ {
		e := ecs.NewEntity([]string{c.Type(), "RenderSystem"})
		espace := &engi.SpaceComponent{engi.Point{0, float32(i * (3*dpi + 10))}, 0, 0}
		e.AddComponent(espace)

		if c.Visualize {
			e.AddComponent(&CalibrateComponent{i})
		}

		c.AddEntity(e)
		c.World.AddEntity(e)
	}
}

func (s *SceneSwitcherSystem) New(*ecs.World) {
	s.System = ecs.NewSystem()
	s.System.AddEntity(ecs.NewEntity([]string{s.Type()}))
}