Golang Window.Erase方法代码示例

func main() {
	stdscr, err := gc.Init()
	if err != nil {
		log.Fatal(err)
	}
	defer gc.End()

	// Turn off character echo, hide the cursor and disable input buffering
	gc.Echo(false)
	gc.CBreak(true)
	gc.Cursor(0)

	stdscr.Print("Use arrow keys to move the window. Press 'q' to exit")
	stdscr.NoutRefresh()

	// Determine the center of the screen and offset those coordinates by
	// half of the window size we are about to create. These coordinates will
	// be used to move our window around the screen
	rows, cols := stdscr.MaxYX()
	height, width := 5, 10
	y, x := (rows-height)/2, (cols-width)/2

	// Create a new window centered on the screen and enable the use of the
	// keypad on it so the arrow keys are available
	var win *gc.Window
	win, err = gc.NewWindow(height, width, y, x)
	if err != nil {
		log.Fatal(err)
	}
	win.Keypad(true)

main:
	for {
		// Clear the section of screen where the box is currently located so
		// that it is blanked by calling Erase on the window and refreshing it
		// so that the chances are sent to the virtual screen but not actually
		// output to the terminal
		win.Erase()
		win.NoutRefresh()
		// Move the window to it's new location (if any) and redraw it
		win.MoveWindow(y, x)
		win.Box(gc.ACS_VLINE, gc.ACS_HLINE)
		win.NoutRefresh()
		// Update will flush only the characters which have changed between the
		// physical screen and the virtual screen, minimizing the number of
		// characters which must be sent
		gc.Update()

		// In order for the window to display correctly, we must call GetChar()
		// on it rather than stdscr
		switch win.GetChar() {
		case 'q':
			break main
		case gc.KEY_LEFT:
			if x > 0 {
				x--
			}
		case gc.KEY_RIGHT:
			if x < cols-width {
				x++
			}
		case gc.KEY_UP:
			if y > 1 {
				y--
			}
		case gc.KEY_DOWN:
			if y < rows-height {
				y++
			}
		}
	}
	win.Delete()
}

func main() {
	f, err := os.Create("err.log")
	if err != nil {
		log.Fatal(err)
	}
	defer f.Close()

	log.SetOutput(f)

	var stdscr *gc.Window
	stdscr, err = gc.Init()
	if err != nil {
		log.Println("Init:", err)
	}
	defer gc.End()

	rand.Seed(time.Now().Unix())
	gc.StartColor()
	gc.Cursor(0)
	gc.Echo(false)
	gc.HalfDelay(1)

	gc.InitPair(1, gc.C_WHITE, gc.C_BLACK)
	gc.InitPair(2, gc.C_YELLOW, gc.C_BLACK)
	gc.InitPair(3, gc.C_MAGENTA, gc.C_BLACK)
	gc.InitPair(4, gc.C_RED, gc.C_BLACK)

	gc.InitPair(5, gc.C_BLUE, gc.C_BLACK)
	gc.InitPair(6, gc.C_GREEN, gc.C_BLACK)

	lines, cols := stdscr.MaxYX()
	pl, pc := lines, cols*3

	ship := newShip(lines/2, 5)
	objects = append(objects, ship)

	field := genStarfield(pl, pc)
	text := stdscr.Duplicate()

	c := time.NewTicker(time.Second / 2)
	c2 := time.NewTicker(time.Second / 16)
	px := 0

loop:
	for {
		text.MovePrintf(0, 0, "Life: [%-5s]", lifeToText(ship.life))
		stdscr.Erase()
		stdscr.Copy(field.Window, 0, px, 0, 0, lines-1, cols-1, true)
		drawObjects(stdscr)
		stdscr.Overlay(text)
		stdscr.Refresh()
		select {
		case <-c.C:
			spawnAsteroid(stdscr.MaxYX())
			if px+cols >= pc {
				break loop
			}
			px++
		case <-c2.C:
			updateObjects(stdscr.MaxYX())
			drawObjects(stdscr)
		default:
			if !handleInput(stdscr, ship) || ship.Expired(-1, -1) {
				break loop
			}
		}
	}
	msg := "Game Over"
	end, err := gc.NewWindow(5, len(msg)+4, (lines/2)-2, (cols-len(msg))/2)
	if err != nil {
		log.Fatal("game over:", err)
	}
	end.MovePrint(2, 2, msg)
	end.Box(gc.ACS_VLINE, gc.ACS_HLINE)
	end.Refresh()
	gc.Nap(2000)
}