Golang Renderer.Destroy方法代码示例

func main() {
	var window *sdl.Window
	var renderer *sdl.Renderer
	var event sdl.Event
	var running bool

	window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
		winWidth, winHeight, sdl.WINDOW_SHOWN)
	if window == nil {
		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
		os.Exit(1)
	}

	renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
	if renderer == nil {
		fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
		os.Exit(2)
	}

	var peepArray []sdl.Event = make([]sdl.Event, 5)

	running = true
	for running {
		sdl.PumpEvents()
		numEventsRetrieved := sdl.PeepEvents(peepArray, sdl.PEEKEVENT, sdl.FIRSTEVENT, sdl.LASTEVENT)
		if numEventsRetrieved < 0 {
			fmt.Printf("PeepEvents error: %s\n", sdl.GetError())
		} else {
			for i := 0; i < numEventsRetrieved; i++ {
				fmt.Printf("Event Peeked Value: %v\n", peepArray[i]) // primitive printing of event
			}
		}

		for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
			switch t := event.(type) {
			case *sdl.QuitEvent:
				running = false
			case *sdl.MouseMotionEvent:
				fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
					t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
			case *sdl.MouseButtonEvent:
				fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
					t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
			case *sdl.MouseWheelEvent:
				fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
					t.Timestamp, t.Type, t.Which, t.X, t.Y)
			case *sdl.KeyUpEvent:
				fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
					t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
			}
		}
		sdl.Delay(1000 / 30)
	}

	renderer.Destroy()
	window.Destroy()
}

func run() int {
	var window *sdl.Window
	var renderer *sdl.Renderer
	var points []sdl.Point
	var rect sdl.Rect
	var rects []sdl.Rect

	window, err := sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
		winWidth, winHeight, sdl.WINDOW_SHOWN)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
		return 1
	}
	defer window.Destroy()

	renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
		return 2
	}
	defer renderer.Destroy()

	renderer.Clear()

	renderer.SetDrawColor(255, 255, 255, 255)
	renderer.DrawPoint(150, 300)

	renderer.SetDrawColor(0, 0, 255, 255)
	renderer.DrawLine(0, 0, 200, 200)

	points = []sdl.Point{{0, 0}, {100, 300}, {100, 300}, {200, 0}}
	renderer.SetDrawColor(255, 255, 0, 255)
	renderer.DrawLines(points)

	rect = sdl.Rect{300, 0, 200, 200}
	renderer.SetDrawColor(255, 0, 0, 255)
	renderer.DrawRect(&rect)

	rects = []sdl.Rect{{400, 400, 100, 100}, {550, 350, 200, 200}}
	renderer.SetDrawColor(0, 255, 255, 255)
	renderer.DrawRects(rects)

	rect = sdl.Rect{250, 250, 200, 200}
	renderer.SetDrawColor(0, 255, 0, 255)
	renderer.FillRect(&rect)

	rects = []sdl.Rect{{500, 300, 100, 100}, {200, 300, 200, 200}}
	renderer.SetDrawColor(255, 0, 255, 255)
	renderer.FillRects(rects)

	renderer.Present()

	sdl.Delay(2000)

	return 0
}

func main() {
	var window *sdl.Window
	var renderer *sdl.Renderer
	var points []sdl.Point
	var rect sdl.Rect
	var rects []sdl.Rect

	window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
		winWidth, winHeight, sdl.WINDOW_SHOWN)
	if window == nil {
		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
		os.Exit(1)
	}

	renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
	if renderer == nil {
		fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
		os.Exit(2)
	}

	renderer.SetDrawColor(255, 255, 255, 255)
	renderer.DrawPoint(150, 300)

	renderer.SetDrawColor(0, 0, 255, 255)
	renderer.DrawLine(0, 0, 200, 200)

	points = []sdl.Point{{0, 0}, {100, 300}, {100, 300}, {200, 0}}
	renderer.SetDrawColor(255, 255, 0, 255)
	renderer.DrawLines(points)

	rect = sdl.Rect{300, 0, 200, 200}
	renderer.SetDrawColor(255, 0, 0, 255)
	renderer.DrawRect(&rect)

	rects = []sdl.Rect{{400, 400, 100, 100}, {550, 350, 200, 200}}
	renderer.SetDrawColor(0, 255, 255, 255)
	renderer.DrawRects(rects)

	rect = sdl.Rect{250, 250, 200, 200}
	renderer.SetDrawColor(0, 255, 0, 255)
	renderer.FillRect(&rect)

	rects = []sdl.Rect{{500, 300, 100, 100}, {200, 300, 200, 200}}
	renderer.SetDrawColor(255, 0, 255, 255)
	renderer.FillRects(rects)

	renderer.Present()

	sdl.Delay(2000)

	renderer.Destroy()
	window.Destroy()
}

func run() int {
	var window *sdl.Window
	var renderer *sdl.Renderer
	var texture *sdl.Texture
	var src, dst sdl.Rect
	var err error

	window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
		winWidth, winHeight, sdl.WINDOW_SHOWN)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
		return 1
	}
	defer window.Destroy()

	renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
		return 2
	}
	defer renderer.Destroy()

	image, err := img.Load(imageName)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to load PNG: %s\n", err)
		return 3
	}
	defer image.Free()

	texture, err = renderer.CreateTextureFromSurface(image)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", err)
		return 4
	}
	defer texture.Destroy()

	src = sdl.Rect{0, 0, 512, 512}
	dst = sdl.Rect{100, 50, 512, 512}

	renderer.Clear()
	renderer.SetDrawColor(255, 0, 0, 255)
	renderer.FillRect(&sdl.Rect{0, 0, int32(winWidth), int32(winHeight)})
	renderer.Copy(texture, &src, &dst)
	renderer.Present()

	sdl.Delay(2000)

	return 0
}

func main() {
	var window *sdl.Window
	var renderer *sdl.Renderer
	var event sdl.Event
	var running bool

	window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
		winWidth, winHeight, sdl.WINDOW_SHOWN)
	if window == nil {
		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
		os.Exit(1)
	}

	renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
	if renderer == nil {
		fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
		os.Exit(2)
	}

	running = true
	for running {
		event = sdl.WaitEventTimeout(1000) // wait here until an event is in the event queue
		if event == nil {
			fmt.Println("WaitEventTimeout timed out")
			continue
		}

		switch t := event.(type) {
		case *sdl.QuitEvent:
			running = false
		case *sdl.MouseMotionEvent:
			fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
				t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
		case *sdl.MouseButtonEvent:
			fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
				t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
		case *sdl.MouseWheelEvent:
			fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
				t.Timestamp, t.Type, t.Which, t.X, t.Y)
		case *sdl.KeyUpEvent:
			fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
				t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
		}
	}

	renderer.Destroy()
	window.Destroy()
}

func main() {
	var window *sdl.Window
	var renderer *sdl.Renderer
	var texture *sdl.Texture
	var src, dst sdl.Rect

	window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
		winWidth, winHeight, sdl.WINDOW_SHOWN)
	if window == nil {
		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
		os.Exit(1)
	}

	renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
	if renderer == nil {
		fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
		os.Exit(2)
	}

	image := img.Load(imageName)
	if image == nil {
		fmt.Fprintf(os.Stderr, "Failed to load PNG: %s\n", sdl.GetError())
		os.Exit(3)
	}

	texture = renderer.CreateTextureFromSurface(image)
	if texture == nil {
		fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", sdl.GetError())
		os.Exit(4)
	}

	src = sdl.Rect{0, 0, 512, 512}
	dst = sdl.Rect{100, 50, 512, 512}

	renderer.Clear()
	renderer.SetDrawColor(255, 0, 0, 255)
	renderer.FillRect(&sdl.Rect{0, 0, int32(winWidth), int32(winHeight)})
	renderer.Copy(texture, &src, &dst)
	renderer.Present()

	sdl.Delay(2000)

	image.Free()
	texture.Destroy()
	renderer.Destroy()
	window.Destroy()
}

func run() int {
	var window *sdl.Window
	var renderer *sdl.Renderer
	var event sdl.Event
	var running bool
	var err error

	window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
		winWidth, winHeight, sdl.WINDOW_SHOWN)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
		return 1
	}
	defer window.Destroy()

	renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
		return 2
	}
	defer renderer.Destroy()

	running = true
	for running {
		for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
			switch t := event.(type) {
			case *sdl.QuitEvent:
				running = false
			case *sdl.MouseMotionEvent:
				fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
					t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
			case *sdl.MouseButtonEvent:
				fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
					t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
			case *sdl.MouseWheelEvent:
				fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
					t.Timestamp, t.Type, t.Which, t.X, t.Y)
			case *sdl.KeyUpEvent:
				fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
					t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
			}
		}
	}

	return 0
}

func main() {
	var window *sdl.Window
	var renderer *sdl.Renderer
	var image *sdl.Surface
	var texture *sdl.Texture
	var src, dst sdl.Rect
	var err error

	window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
		winWidth, winHeight, sdl.WINDOW_SHOWN)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
		os.Exit(1)
	}
	defer window.Destroy()

	renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
		os.Exit(2)
	}
	defer renderer.Destroy()

	image, err = sdl.LoadBMP(imageName)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to load BMP: %s\n", err)
		os.Exit(3)
	}
	defer image.Free()

	texture, err = renderer.CreateTextureFromSurface(image)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", err)
		os.Exit(4)
	}
	defer texture.Destroy()

	src = sdl.Rect{0, 0, 512, 512}
	dst = sdl.Rect{100, 50, 512, 512}

	renderer.Clear()
	renderer.Copy(texture, &src, &dst)
	renderer.Present()

	sdl.Delay(2000)
}

func main() {
	var window *sdl.Window
	var renderer *sdl.Renderer

	sdl.Init(sdl.INIT_EVERYTHING)

	window = createWindow(winTitle, winHeight, winWidth)
	defer window.Destroy()

	renderer = createRenderer(window)
	defer renderer.Destroy()

	var secTickChan = time.Tick(time.Second)
	var events = &Events{}
	var fps = 0
	var view = NewGameView()

	for {
		// Pump events
		events.GetEvents()

		// Pass events and renderer to view
		view.Render(renderer, events)

		// This structure logs the fps
		select {
		case <-secTickChan:
			log.Println("fps:", fps)
			fps = 0
		default:
			fps++
		}

		// Delay the next frame rendering to free up CPU
		sdl.Delay(13)
	}
}

func main() {
	var window *sdl.Window
	var renderer *sdl.Renderer
	var event sdl.Event
	var running bool

	window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
		winWidth, winHeight, sdl.WINDOW_SHOWN)
	if window == nil {
		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
		os.Exit(1)
	}

	renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
	if renderer == nil {
		fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
		os.Exit(2)
	}

	var peepArray []sdl.Event = make([]sdl.Event, 2)
	peepArray[0] = &sdl.UserEvent{sdl.USEREVENT, sdl.GetTicks(), window.GetID(), 1331, nil, nil}
	peepArray[1] = &sdl.UserEvent{sdl.USEREVENT, sdl.GetTicks(), window.GetID(), 10101, nil, nil}

	running = true
	lastPushTime := sdl.GetTicks()
	for running {
		if lastPushTime+pushTime < sdl.GetTicks() {
			lastPushTime = sdl.GetTicks()
			sdl.PumpEvents()
			numEventsHandled := sdl.PeepEvents(peepArray, sdl.ADDEVENT, sdl.FIRSTEVENT, sdl.LASTEVENT)
			if numEventsHandled < 0 {
				fmt.Printf("PeepEvents error: %s\n", sdl.GetError())
			} else {
				fmt.Printf("Successful push of %d events\n", numEventsHandled)
			}
		}

		for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
			switch t := event.(type) {
			case *sdl.QuitEvent:
				running = false
			case *sdl.MouseMotionEvent:
				fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
					t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
			case *sdl.MouseButtonEvent:
				fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
					t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
			case *sdl.MouseWheelEvent:
				fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
					t.Timestamp, t.Type, t.Which, t.X, t.Y)
			case *sdl.KeyUpEvent:
				fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
					t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
			case *sdl.UserEvent:
				fmt.Printf("[%d ms] UserEvent\tcode:%d\n", t.Timestamp, t.Code)
			}
		}
		sdl.Delay(1000 / 30)
	}

	renderer.Destroy()
	window.Destroy()
}

// Initialize
func main() {
	var window *sdl.Window
	var renderer *sdl.Renderer
	var err error

	window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
		int(winWidth), int(winHeight), sdl.WINDOW_SHOWN)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
		os.Exit(1)
	}
	defer window.Destroy()

	renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
		os.Exit(2)
	}
	defer renderer.Destroy()

	tilesetImg, err := img.Load("assets/textures/ts1.png")
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to load PNG: %s\n", err)
		os.Exit(3)
	}
	defer tilesetImg.Free()

	tilesetTxt, err := renderer.CreateTextureFromSurface(tilesetImg)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", err)
		os.Exit(4)
	}
	defer tilesetTxt.Destroy()

	spritesheetImg, err := img.Load("assets/textures/actor3.png")
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to load PNG: %s\n", err)
		os.Exit(3)
	}
	defer spritesheetImg.Free()

	spritesheetTxt, err := renderer.CreateTextureFromSurface(spritesheetImg)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", err)
		os.Exit(4)
	}
	defer spritesheetTxt.Destroy()

	err = ttf.Init()
	font, err = ttf.OpenFont("assets/textures/PressStart2P.ttf", 18)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to load font file: %s\n", err)
		os.Exit(6)
	}

	if err := sdl.Init(sdl.INIT_AUDIO); err != nil {
		fmt.Fprintf(os.Stderr, "Failed to load music file: %s\n", err)
		os.Exit(7)
	}

	if err := mix.Init(mix.INIT_MP3); err != nil {
		fmt.Fprintf(os.Stderr, "Failed to load music file: %s\n", err)
		os.Exit(8)
	}

	currScene = &eng.Scene{
		Window:     eng.Window{winWidth, winHeight},
		StartTime:  time.Now(),
		Cam:        eng.Camera{0, 0},
		EnemyCount: 99,
		TsTxt:      tilesetTxt,
		SsTxt:      spritesheetTxt,
		Font:       font,
	}

	currScene.Init(renderer)

	var running bool = true

	for running {
		then := time.Now()
		running = catchEvents()
		//currScene.Update()
		currScene.Render(renderer)

		dur := time.Since(then)
		sdl.Delay(40 - uint32(dur.Nanoseconds()/1000000))
		currScene.FrameCounter++
	}
}

func run(serverStr, name string) int {
	var window *sdl.Window
	var renderer *sdl.Renderer
	var running bool
	var event sdl.Event
	var inputState InputState

	url := "ws://" + serverStr
	origin := "http://" + serverStr
	ws, err := websocket.Dial(url, "", origin)
	if err != nil {
		fmt.Printf("%v\n", err)
		os.Exit(1)
	}

	window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
		winWidth, winHeight, sdl.WINDOW_SHOWN)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
		return 1
	}
	defer window.Destroy()

	renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
		return 2
	}
	defer renderer.Destroy()

	renderer.Clear()

	websocket.Message.Send(ws, joinMessage(name))

	running = true

	var data map[string]map[string][]map[string]interface{}
	decoder := msgpack.NewDecoder(ws)

	renderer.SetDrawColor(1, 1, 1, 255)
	renderer.Clear()

	for running {
		renderer.SetDrawColor(1, 1, 1, 255)
		renderer.Clear()
		newInputState := inputState

		for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
			switch event.(type) {
			case *sdl.QuitEvent:
				running = false

			case *sdl.KeyDownEvent:
				switch event.(*sdl.KeyDownEvent).Keysym.Sym {
				case sdl.K_ESCAPE:
					running = false
				case sdl.K_LEFT:
					newInputState.Left = true
				case sdl.K_RIGHT:
					newInputState.Right = true
				case sdl.K_UP:
					newInputState.Thrust = true
				}

			case *sdl.KeyUpEvent:
				switch event.(*sdl.KeyUpEvent).Keysym.Sym {
				case sdl.K_LEFT:
					newInputState.Left = false
				case sdl.K_RIGHT:
					newInputState.Right = false
				case sdl.K_UP:
					newInputState.Thrust = false
				}
			}
		}

		if !newInputState.IsSameAs(inputState) {
			websocket.Message.Send(ws, newInputState.Message())
			inputState = newInputState
		}

		decoder.Decode(&data)

		for _, ship := range data["state"]["ships"] {
			colourhex, _ := hex.DecodeString(ship["colour"].(string)[1:7])
			rot, _ := ship["rotation"].(float64)
			s := Ship{
				Position: V2{float64(ship["x"].(int64)), float64(ship["y"].(int64))},
				Size:     30,
				Rotation: rot,
				Doge:     ship["doge"].(bool),
			}
			renderer.SetDrawColor(uint8(colourhex[0]), uint8(colourhex[1]), uint8(colourhex[2]), 255)
			renderer.DrawLines(s.Points())
		}

		renderer.Present()
	}

	return 0
//.........这里部分代码省略.........

func main() {
	var window *sdl.Window
	var renderer *sdl.Renderer
	var event sdl.Event
	var running bool

	window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
		winWidth, winHeight, sdl.WINDOW_SHOWN)
	if window == nil {
		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
		os.Exit(1)
	}

	renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
	if renderer == nil {
		fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
		os.Exit(2)
	}

	running = true
	lastPushTime := sdl.GetTicks()
	for running {

		// Push a UserEvent every second
		if lastPushTime+pushTime < sdl.GetTicks() {
			lastPushTime = sdl.GetTicks()
			pEvent := &sdl.UserEvent{sdl.USEREVENT, sdl.GetTicks(), window.GetID(), 1331, nil, nil}

			retVal := sdl.PushEvent(pEvent) // Here's where the event is actually pushed

			switch retVal {
			case 1:
				fmt.Println("PushEvent returned success")
			case 0:
				fmt.Println("PushEvent returned filtered")
			case -1:
				fmt.Printf("PushEvent returned error: %s\n", sdl.GetError)
			}
		}

		for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
			switch t := event.(type) {
			case *sdl.QuitEvent:
				running = false
			case *sdl.MouseMotionEvent:
				fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
					t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
			case *sdl.MouseButtonEvent:
				fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
					t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
			case *sdl.MouseWheelEvent:
				fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
					t.Timestamp, t.Type, t.Which, t.X, t.Y)
			case *sdl.KeyUpEvent:
				fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
					t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
			case *sdl.UserEvent:
				fmt.Printf("[%d ms] UserEvent\tcode:%d\n", t.Timestamp, t.Code)
			}
		}
		sdl.Delay(1000 / 30)
	}

	renderer.Destroy()
	window.Destroy()
}

func run() int {
	var window *sdl.Window
	var renderer *sdl.Renderer
	var points []sdl.Point
	var rect sdl.Rect
	var rects []sdl.Rect
	var err error

	sdl.Do(func() {
		window, err = sdl.CreateWindow(WindowTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, WindowWidth, WindowHeight, sdl.WINDOW_SHOWN)
	})
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
		return 1
	}
	defer func() {
		sdl.Do(func() {
			window.Destroy()
		})
	}()

	sdl.Do(func() {
		renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
	})
	if err != nil {
		fmt.Fprint(os.Stderr, "Failed to create renderer: %s\n", err)
		return 2
	}

	sdl.Do(func() {
		renderer.Clear()
	})
	defer func() {
		sdl.Do(func() {
			renderer.Destroy()
		})
	}()

	go func() {
		println("goroutine: A")
	}()

	sdl.Do(func() {
		renderer.SetDrawColor(255, 255, 255, 255)
		renderer.DrawPoint(150, 300)
		println("queue: A")
	})

	go func() {
		println("goroutine: B")
	}()

	sdl.Do(func() {
		renderer.SetDrawColor(0, 0, 255, 255)
		renderer.DrawLine(0, 0, 200, 200)
		println("queue: B")
	})

	go func() {
		println("goroutine: C")
	}()

	sdl.Do(func() {
		points = []sdl.Point{{0, 0}, {100, 300}, {100, 300}, {200, 0}}
		renderer.SetDrawColor(255, 255, 0, 255)
		renderer.DrawLines(points)
		println("queue: C")
	})

	go func() {
		println("goroutine: D")
	}()

	sdl.Do(func() {
		rect = sdl.Rect{300, 0, 200, 200}
		renderer.SetDrawColor(255, 0, 0, 255)
		renderer.DrawRect(&rect)
		println("queue: D")
	})

	go func() {
		println("goroutine: E")
	}()

	sdl.Do(func() {
		rects = []sdl.Rect{{400, 400, 100, 100}, {550, 350, 200, 200}}
		renderer.SetDrawColor(0, 255, 255, 255)
		renderer.DrawRects(rects)
		println("queue: E")
	})

	go func() {
		println("goroutine: F")
	}()

	sdl.Do(func() {
		rect = sdl.Rect{250, 250, 200, 200}
		renderer.SetDrawColor(0, 255, 0, 255)
		renderer.FillRect(&rect)
		println("queue: F")
//.........这里部分代码省略.........

func run() int {
	var window *sdl.Window
	var renderer *sdl.Renderer
	var err error

	sdl.Do(func() {
		window, err = sdl.CreateWindow(WindowTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, WindowWidth, WindowHeight, sdl.WINDOW_OPENGL)
	})
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
		return 1
	}
	defer func() {
		sdl.Do(func() {
			window.Destroy()
		})
	}()

	sdl.Do(func() {
		renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
	})
	if err != nil {
		fmt.Fprint(os.Stderr, "Failed to create renderer: %s\n", err)
		return 2
	}
	defer func() {
		sdl.Do(func() {
			renderer.Destroy()
		})
	}()

	sdl.Do(func() {
		renderer.Clear()
	})

	for i := range rects {
		rects[i] = sdl.Rect{
			X: int32(rand.Int() % WindowWidth),
			Y: int32(i * WindowHeight / len(rects)),
			W: RectWidth,
			H: RectHeight,
		}
	}

	running := true
	for running {
		sdl.Do(func() {
			for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
				switch event.(type) {
				case *sdl.QuitEvent:
					runningMutex.Lock()
					running = false
					runningMutex.Unlock()
				}
			}

			renderer.Clear()
			renderer.SetDrawColor(0, 0, 0, 0x20)
			renderer.FillRect(&sdl.Rect{0, 0, WindowWidth, WindowHeight})
		})

		// Do expensive stuff using goroutines
		wg := sync.WaitGroup{}
		for i := range rects {
			wg.Add(1)
			go func(i int) {
				rects[i].X = (rects[i].X + 10) % WindowWidth
				sdl.Do(func() {
					renderer.SetDrawColor(0xff, 0xff, 0xff, 0xff)
					renderer.DrawRect(&rects[i])
				})
				wg.Done()
			}(i)
		}
		wg.Wait()

		sdl.Do(func() {
			renderer.Present()
			sdl.Delay(1000 / FrameRate)
		})
	}

	return 0
}