我的代码有问题，请查看下面的代码，以便了解我正在讨论的部分！
我试图在＆＃34; block.Count == 1＆＃34;时添加新的块级别，你知道什么时候我的所有块都被球摧毁了。我希望它以不同的块路径开始一个新的关卡。当我有：
else if (block.Count == 1 && block2.Count == 1)
{
spriteBatch.Draw(gameover_texture, gameover_rect, Color.White);
}
它没有抽出我的gameover_texture，块何时消失？ （抱歉我的英语不好）
public class Game1 : Game
{
GraphicsDeviceManager graphics;
SpriteBatch spriteBatch;
SpriteFont spritefont;
Texture2D paddle_texture;
Texture2D ball_texture;
Texture2D blockred_texture;
Texture2D blockgreen_texture;
Texture2D gameover_texture;
Rectangle paddle_rect;
Rectangle ball_rect;
Rectangle blockred_rect;
Rectangle blockgreen_rect;
Rectangle gameover_rect;
Vector2 paddle_speed;
Vector2 ball_speed;
Random random;
StreamReader sr;
StreamWriter sw;
int lives = 3;
int points = 0;
int highscore;
int counter = 0;
int seconds = 0;
List<Rectangle> block = new List<Rectangle>();
List<Rectangle> block2 = new List<Rectangle>();
bool Start = false;
bool holdingleft = false;
bool holdingright = false;
bool resetballspeed = false;
public Game1()
{
graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";
graphics.PreferredBackBufferWidth = 760;
graphics.PreferredBackBufferHeight = 620;
}
protected override void Initialize()
{
random = new Random();
paddle_speed.X = 6f;
ball_speed.X = random.Next(-1, 1);
ball_speed.Y = 7f;
sr = new StreamReader("highscore.txt");
highscore = int.Parse(sr.ReadLine());
sr.Close();
base.Initialize();
}
protected override void LoadContent()
{
spriteBatch = new SpriteBatch(GraphicsDevice);
spritefont = Content.Load<SpriteFont>("Fonts/Myfont");
paddle_texture = Content.Load<Texture2D>("Pics/linje");
ball_texture = Content.Load<Texture2D>("Pics/boll");
blockgreen_texture = Content.Load<Texture2D>("Pics/block-grön");
blockred_texture = Content.Load<Texture2D>("Pics/block-röd");
gameover_texture = Content.Load<Texture2D>("Pics/GameOver");
paddle_rect = new Rectangle((Window.ClientBounds.Width - paddle_texture.Width) / 2, 580, paddle_texture.Width, paddle_texture.Height);
ball_rect = new Rectangle((Window.ClientBounds.Width - ball_texture.Width) / 2, 556, ball_texture.Width, ball_texture.Height);
gameover_rect = new Rectangle((Window.ClientBounds.Width / 2) - (gameover_texture.Width / 2), (Window.ClientBounds.Height / 2) - gameover_texture.Height / 2, gameover_texture.Width, gameover_texture.Height);
block.Add(blockgreen_rect);
block2.Add(blockred_rect);
for (int i = 1; i < 2; i++)
{
for (int g = 1; g < 3; g++)
{
block2.Add(new Rectangle((g * 63) - 60, (i * 40), blockred_texture.Width, blockred_texture.Height));
}
}
for (int i = 1; i < 2; i++)
{
for (int g = 1; g < 3; g++)
{
block.Add(new Rectangle((g * 63) - 60, (i * 20) + 40, blockgreen_texture.Width, blockgreen_texture.Height));
}
}
}
protected override void UnloadContent()
{
// TODO: Unload any non ContentManager content here
}
protected override void Update(GameTime gameTime)
{
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
Exit();
if (Start == true) //kolla om "Start == true",
{
ball_rect.X += (int)ball_speed.X;
ball_rect.Y += (int)ball_speed.Y;
}
if (Start == false)
{
ball_rect.X = paddle_rect.X + ((paddle_rect.Width / 2) - (ball_texture.Width / 2));
}
if (ball_rect.X > Window.ClientBounds.Width - ball_texture.Width || ball_rect.X < 0)
ball_speed.X *= -1;
if (ball_rect.Y > Window.ClientBounds.Height - ball_texture.Height || ball_rect.Y < 0)
ball_speed.Y *= -1;
if (ball_rect.Y > Window.ClientBounds.Height - ball_texture.Height)
{
lives -= 1;
Start = false;
ball_rect.X = (Window.ClientBounds.Width - ball_texture.Width) / 2;
ball_rect.Y = 556;
paddle_rect.X = (Window.ClientBounds.Width - paddle_texture.Width) / 2;
paddle_rect.Y = 580;
}
KeyboardState ks = Keyboard.GetState();
if (ks.IsKeyDown(Keys.Left))
{
paddle_rect.X -= (int)paddle_speed.X;
holdingleft = true;
}
else if (ks.IsKeyDown(Keys.Right))
{
paddle_rect.X += (int)paddle_speed.X;
holdingright = true;
}
else if (ks.IsKeyDown(Keys.Space))
{
Start = true;
}
else if (ks.Equals(new KeyboardState()))
{
resetballspeed = true;
}
if (paddle_rect.X > Window.ClientBounds.Width - paddle_rect.Width)
paddle_rect.X = (Window.ClientBounds.Width - paddle_rect.Width);
if (paddle_rect.X < 0)
paddle_rect.X = 0;
if (paddle_rect.Intersects(ball_rect))
{
ball_speed.Y *= -1;
ball_rect.Y += (int)ball_speed.Y;
if (holdingleft == true)
{
ball_speed.X -= 3;
}
else if (holdingright == true)
{
ball_speed.X += 3;
}
else if (resetballspeed == true)
{
ball_speed.X = 1;
}
}
if (points == highscore)
{
sw = new StreamWriter("highscore.txt");
sw.WriteLine(points);
sw.Close();
}
for (int j = 1; j < block.Count; j++)
{
if (ball_rect.Intersects(block[j]))
{
ball_speed.Y *= -1;
points += 1;
block.RemoveAt(j);
if (points > 9)
{
paddle_rect.Width = 60;
}
if (points > highscore)
{
highscore = points;
}
}
}
for (int k = 1; k < block2.Count; k++)
{
if (ball_rect.Intersects(block2[k]))
{
ball_speed.Y *= -1;
points += 5;
block2.RemoveAt(k);
if (points > 9)
{
paddle_rect.Width = 60;
}
if (points > highscore)
{
highscore = points;
}
}
}
holdingleft = false;
holdingright = false;
counter++;
if (counter == 60)
{
seconds++;
counter = 0;
}
base.Update(gameTime);
}
protected override void Draw(GameTime gameTime)
{
GraphicsDevice.Clear(Color.Black);
// TODO: Add your drawing code here
spriteBatch.Begin();
if (lives > 0)
{
spriteBatch.Draw(ball_texture, ball_rect, Color.White);
spriteBatch.Draw(paddle_texture, paddle_rect, Color.White);
spriteBatch.DrawString(spritefont, "Lives left: " + lives, Vector2.Zero, Color.White);
spriteBatch.DrawString(spritefont, "Points: " + points, new Vector2(350, 0), Color.White);
spriteBatch.DrawString(spritefont, "Timer: " + seconds, new Vector2(350, 600), Color.White);
spriteBatch.DrawString(spritefont, "Highscore: " + highscore, new Vector2(660, 0), Color.White);
foreach (Rectangle g in block)
{
spriteBatch.Draw(blockgreen_texture, g, Color.White);
}
foreach (Rectangle t in block2)
{
spriteBatch.Draw(blockred_texture, t, Color.White);
}
}
else if (block.Count == 1 && block2.Count == 1)
{
spriteBatch.Draw(gameover_texture, gameover_rect, Color.White);
}
else if (lives == 0)
{
spriteBatch.Draw(gameover_texture, gameover_rect, Color.White);
}
spriteBatch.End();
base.Draw(gameTime);
}
}
答案 0 :(得分：0)
现在解决了问题，将else if语句置于＆＃34; if（lives＆gt; 0）＆＃34;