I have an error in XNA, in my gameover update state, on the if statement for highscores. It says the following message error message: 'No Overload for method 'SavehighScore' take 0 arguments'.
But below it I have written the method, not sure what to do now?
Heres my full code:
using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;
using System.IO;
using System.Text;
namespace PickUpTheCrewGame
{
/// <summary>
/// This is the main type for your game
/// </summary>
public class PickUpTheCrewGame : Microsoft.Xna.Framework.Game
{
public enum State
{
Menu,
Playing,
Gameover,
}
GraphicsDeviceManager graphics;
SpriteBatch spriteBatch;
SpriteFont messageFont;
SpriteFont playerScoreFont;
Texture2D backgroundTexture;
Rectangle backgroundRectangle;
Texture2D menuImageTexture;
Rectangle menuImageRectange;
Texture2D gameoverImageTexture;
Rectangle gameoverImageRectangle;
Sprite BlueBall;
Sprite GreenBall;
Sprite OrangeBall;
Sprite PinkBall;
Sprite RedBall;
Sprite c;
Sprite YellowBall;
public Texture2D menuImage;
public Texture2D gameoverImage;
//---player scoresyer
int playerScore = 0;
int highScore = 0;
//Lists
List<sharks> sharks = new List<sharks>();
List<Sprite> crew = new List<Sprite>();
List<int> highscoreList = new List<int>();
//highScoreList.Add(score);
//Set First State
State gameState = State.Menu;
HUD hud = new HUD();
public PickUpTheCrewGame()
{
graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";
//sreen size
graphics.PreferredBackBufferWidth = 800;
graphics.PreferredBackBufferHeight = 600;
menuImage = null;
gameoverImage = null;
}
/// <summary>
/// Allows the game to perform any initialization it needs to before starting to run.
/// This is where it can query for any required services and load any non-graphic
/// related content. Calling base.Initialize will enumerate through any components
/// and initialize them as well.
/// </summary>
protected override void Initialize()
{
// TODO: Add your initialization logic here
//enable the mousepointer
//IsMouseVisible = true;
base.Initialize();
}
public bool IsHighScore()
{
if(playerScore >highScore)
{
return true;
}
else
{
return false;
}
}
public void Save(string filename)
{
System.IO.TextWriter textOut = null;
try
{
textOut = new System.IO.StreamWriter(filename);
Save(textOut);
}
catch (Exception e)
{
throw e;
}
finally
{
if (textOut != null) textOut.Close();
}
}
private void Save(TextWriter textOut)
{
try
{
foreach (Sprite crew1 in crew)
{
textOut.WriteLine(crew1.location.X);
textOut.WriteLine(crew1.location.Y);
}
foreach (sharks enemySprite in sharks)
{
textOut.WriteLine("Shark");
textOut.WriteLine(enemySprite.location.X);
textOut.WriteLine(enemySprite.location.Y);
}
}
catch
{
}
}
public void Load(string filename)
{
System.IO.TextReader textIn = null;
//try
//{
textIn = new System.IO.StreamReader(filename);
Load(textIn);
//}
//catch (Exception e)
//{
// throw e;
//}
//finally
//{
if (textIn != null) textIn.Close();
//}
}
private void Load(TextReader textIn)
{
foreach (Sprite crew1 in crew)
{
crew1.location.X = int.Parse(textIn.ReadLine());
crew1.location.Y = int.Parse(textIn.ReadLine());
}
foreach (sharks enemySprite in sharks)
{
enemySprite.location.X = int.Parse(textIn.ReadLine());
enemySprite.location.Y = int.Parse(textIn.ReadLine());
}
throw new NotImplementedException();
}
/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
// Create a new SpriteBatch, which can be used to draw textures.
spriteBatch = new SpriteBatch(GraphicsDevice);
hud.LoadContent(Content);
//-----LOAD THE MENU BACKGROUND-----
menuImageTexture = Content.Load<Texture2D>("menuImage");
menuImageRectange = new Rectangle(0, 0,
Window.ClientBounds.Width,
Window.ClientBounds.Height);
//------LOAD INGAME BACKGROUND-----
backgroundTexture = Content.Load<Texture2D>("Background");
backgroundRectangle = new Rectangle(
0, 0, // top left hand corner
Window.ClientBounds.Width,
Window.ClientBounds.Height); // size of screen display
//GAMEOVER IMAGE BACKGROUND
gameoverImageTexture = Content.Load<Texture2D>("gameoverImage");
gameoverImageRectangle = new Rectangle(
0, 0,
Window.ClientBounds.Width,
Window.ClientBounds.Height);
//-------Captains crew-------
c = new Sprite(new Vector2(0, 0), new Vector2(0, 0),
Content.Load<Texture2D>("WhiteBall"), Color.White);
BlueBall = new Sprite(new Vector2(640, 450),
Content.Load<Texture2D>("BlueBall"));
crew.Add(BlueBall);
GreenBall = new Sprite(new Vector2(250, 600),
Content.Load<Texture2D>("GreenBall"));
crew.Add(GreenBall);
OrangeBall = new Sprite(new Vector2(115, 400),
Content.Load<Texture2D>("OrangeBall"));
crew.Add(OrangeBall);
RedBall = new Sprite(new Vector2(500, 600),
Content.Load<Texture2D>("RedBall"));
crew.Add(RedBall);
YellowBall = new Sprite(new Vector2(800, 400),
Content.Load<Texture2D>("YellowBall"));
crew.Add(YellowBall);
PinkBall = new Sprite(new Vector2(25, 175),
Content.Load<Texture2D>("PinkBall"));
crew.Add(PinkBall);
//--------Sharks------
sharks s = new sharks(new Vector2(1000, 200),
Content.Load<Texture2D>("BlackBall"));
sharks.Add(s);
s = new sharks(new Vector2(900, 200),
Content.Load<Texture2D>("BlackBall"));
sharks.Add(s);
s = new sharks(new Vector2(800, 200),
Content.Load<Texture2D>("BlackBall"));
sharks.Add(s);
messageFont = Content.Load<SpriteFont>("messageFont");
// TODO: use this.Content to load your game content here
}
/// <summary>
/// UnloadContent will be called once per game and is the place to unload
/// all content.
/// </summary>
protected override void UnloadContent()
{
// TODO: Unload any non ContentManager content here
}
/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
//----------This gets the time value---------
float elapsed = (float)gameTime.ElapsedGameTime.TotalSeconds;
//--------------keyboard input---------------
//Exit
if (Keyboard.GetState().IsKeyDown(Keys.Escape))
this.Exit();
//Save
if (Keyboard.GetState().IsKeyDown(Keys.S))
Save("test.txt");
//Load
if (Keyboard.GetState().IsKeyDown(Keys.L))
Load("test.txt");
//Directional Movement
if (Keyboard.GetState().IsKeyDown(Keys.Left))
c.velocity.X = -350;
if (Keyboard.GetState().IsKeyDown(Keys.Right))
c.velocity.X = 350;
if (Keyboard.GetState().IsKeyDown(Keys.Down))
c.velocity.Y = 350;
if (Keyboard.GetState().IsKeyDown(Keys.Up))
c.velocity.Y = -350;
//UPDATING PLAYING STATE
switch (gameState)
{
case State.Playing:
c.Update(elapsed);
foreach (Sprite cr in crew)
{
cr.Update(elapsed);
}
c.col = Color.White;
//----sharks intersects with whiteball----
foreach (sharks s in sharks)
{
if (c.bounds.Intersects(s.bounds))
{
gameState = State.Gameover;
break;
}
}
foreach (sharks s in sharks)
{
s.Update(elapsed, c.location);
}
//hud.Update(gameTime);
//----sprites intersect with whiteball----
foreach (Sprite crew1 in crew)
{
if (c.bounds.Intersects(crew1.bounds))
{
//gameState = State.Gameover;
playerScore += 1;
crew1.bounds.X = 10000;
crew1.bounds.Y = 10000;
crew1.location.Y = 10000;
crew1.location.X = 10000;
break;
}
} break;
//UPDATING MENU STATE
case State.Menu:
{
//Get keyboard state
KeyboardState keyState = Keyboard.GetState();
if (keyState.IsKeyDown(Keys.Enter))
{
gameState = State.Playing;
}
break;
}
//UPDATING GAMEOVER STATE
case State.Gameover:
{
//Get keyboard state
KeyboardState keyState = Keyboard.GetState();
if (keyState.IsKeyDown(Keys.Back))
{
if (IsHighScore())
{
highScore = playerScore;
SavehighScore();
}
playerScore = 0;
sharks.Clear();
crew.Clear();
gameState = State.Menu;
}
break;
}
}
base.Update(gameTime);
}
private void SavehighScore(string filename)
{
TextWriter textOut = null;
try
{
if (File.Exists(filename))
File.Delete(filename);
textOut = new StreamWriter(filename);
textOut.WriteLine(highScore);
}
catch (Exception e)
{
throw e;
}
finally
{
if (textOut != null) textOut.Close();
}
throw new NotImplementedException();
}
/// <summary>
/// This is called when the game should draw itself.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Draw(GameTime gameTime)
{
GraphicsDevice.Clear(Color.CornflowerBlue);
spriteBatch.Begin();
switch (gameState)
{
//DRAWING PLAYING STATE
case State.Playing:
{
spriteBatch.Draw(backgroundTexture, backgroundRectangle,
Color.White);
c.Draw(spriteBatch);
//FOR EACH CREW DRAW
foreach (Sprite cr in crew)
{
cr.Draw(spriteBatch);
}
//FOREACH SHARK DRAW
foreach (sharks s in sharks)
{
s.Draw(spriteBatch);
}
hud.Draw(spriteBatch);
spriteBatch.DrawString(messageFont, playerScore.ToString(),
new Vector2(200, 0),
Color.White);
spriteBatch.DrawString(messageFont, " Player Scores - ",
new Vector2(0, 0), Color.White);
break;
}
//DRAWING MENU STATE
case State.Menu:
{
spriteBatch.Draw(menuImageTexture, menuImageRectange, Color.White);
break;
}
//DRAWING GAMEOVER STATE
case State.Gameover:
{
spriteBatch.Draw(gameoverImageTexture, gameoverImageRectangle, Color.White);
spriteBatch.DrawString(messageFont, "Your Final Score was - " + playerScore.ToString(),new Vector2 (0,0), Color.White);
break;
}
}
spriteBatch.End();
base.Draw(gameTime);
}
}
}
Heres my error message: the error message appears at the 'SavehighScore();'
case State.Gameover:
{
//Get keyboard state
KeyboardState keyState = Keyboard.GetState();
if (keyState.IsKeyDown(Keys.Back))
{
if (IsHighScore())
{
highScore = playerScore;
SavehighScore();
}
playerScore = 0;
sharks.Clear();
crew.Clear();
gameState = State.Menu;
}
break;
}
Here my SavehighScore method:
private void SavehighScore(string filename)
{
TextWriter textOut = null;
try
{
if (File.Exists(filename))
File.Delete(filename);
textOut = new StreamWriter(filename);
textOut.WriteLine(highScore);
}
catch (Exception e)
{
throw e;
}
finally
{
if (textOut != null) textOut.Close();
}
throw new NotImplementedException();
}
The objective is here is that its meant to save the highscores. Hopefully, save it to a file, is what i'm trying to achieve here.
I am new to xna and still learning. Thank you,
答案 0 :(得分：1)
SavehighScore requires you supply a filename
case State.Gameover:
{
//Get keyboard state
KeyboardState keyState = Keyboard.GetState();
if (keyState.IsKeyDown(Keys.Back))
{
if (IsHighScore())
{
highScore = playerScore;
///////////////////////// HERE ///////////////////////////////////////////
SavehighScore("HighScoreFileName.txt");
}
playerScore = 0;
sharks.Clear();
crew.Clear();
gameState = State.Menu;
}
break;
}
when you define a method with a type and Identifier in the parenthesis it's a parameter
private void SavehighScore(string filename /*I am a parameter*/)
every time you call the method you must provide a value for all parameters unless you provide a default value
private void SavehighScore(string filename = "some constant value")
all parameters with default values must appear after parameters without default values
so you can fix this 3 ways
2.provide default value
3 remove the parameter and hardcode the filename inside the method.
well you can fix it more ways than that but you get idea.
答案 1 :(得分：1)
This isn't really an XNA problem, it's a C# problem.
The problem is that you have declared SavehighScore as
private void SavehighScore(string filename)
and therefore the compiler will not allow you to write SavehighScore() because you just told it that SavehighScore has to be given a string argument called filename. You have to supply a value for this argument in order to call the function.
You have two options
if (IsHighScore()){
highScore = playerScore;
SavehighScore(@"C:\MyGame\Saves\Highscore.dat"); //for example
}
(assuming you are using C# 4 and Visual Studio 2010 or later)
private void SavehighScore(string filename=@"C:\MyGame\Saves\Highscore.dat")
This will allow you to call SavehighScore without any arguments.
Personally I don't like option 2, but both are valid approaches as far as the compiler is concerned.