Method Setup

demos/scale/scale.go:30–67

(u engo.Updater)

}

func (*DefaultScene) Setup(u engo.Updater) {
	w, _ := u.(*ecs.World)

	common.SetBackground(color.White)

	w.AddSystem(&common.RenderSystem{})
	w.AddSystem(&ScaleSystem{})

	// Retrieve a texture
	texture, err := common.LoadedSprite("icon.png")
	if err != nil {
		log.Println(err)
	}

	// Create an entity
	guy := Guy{BasicEntity: ecs.NewBasic()}

	// Initialize the components, set scale to 8x
	guy.RenderComponent = common.RenderComponent{
		Drawable: texture,
		Scale:    engo.Point{8, 8},
	}
	guy.SpaceComponent = common.SpaceComponent{
		Position: engo.Point{0, 0},
		Width:    texture.Width() * guy.RenderComponent.Scale.X,
		Height:   texture.Height() * guy.RenderComponent.Scale.Y,
	}

	// Add it to appropriate systems
	for _, system := range w.Systems() {
		switch sys := system.(type) {
		case *common.RenderSystem:
			sys.Add(&guy.BasicEntity, &guy.RenderComponent, &guy.SpaceComponent)
		case *ScaleSystem:
			sys.Add(&guy.BasicEntity, &guy.RenderComponent)
		}
	}
}

func (*DefaultScene) Type() string { return "GameWorld" }