菜单按钮未显示c#
本文关键字：显示 按钮 菜单 | 更新日期: 2023-09-27 18:08:40
我在业余时间制作了一个2D的宇宙飞船，以便在大学开始前练习c#。然而，我遇到了一个问题，我似乎不能弄清楚。对于菜单，我遵循Youtube教程如何制作菜单，但按钮没有显示。我花了过去的几天试图弄清楚，但没有运气，因此，任何帮助将非常感激。如果代码令人困惑，我道歉，我仍在学习。当我运行游戏时，我没有得到任何错误，我只是得到一个空白的蓝屏，没有按钮显示。
<<p> 按钮类/strong>using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Game1
{
class Button : Game1
{
Texture2D texture;
Vector2 position;
Rectangle rectangle;
Color colour = new Color(255, 255, 255, 255);
public Vector2 size;
bool down;
public bool isClicked;
public Button(Texture2D newText, GraphicsDevice graphics)
{
texture = newText;
size = new Vector2(graphics.Viewport.Width / 20, graphics.Viewport.Height / 10);
}
public void Update(MouseState mouse)
{
rectangle = new Rectangle((int)position.X, (int)position.Y,
(int)size.X, (int)size.Y);
Rectangle mouseRect = new Rectangle(mouse.X, mouse.Y, 1, 1);
if (mouseRect.Intersects(rectangle))
{
if (colour.A == 255) // if only one thing is in an if statement curly braces aren't needed
down = false;
if (colour.A == 0)
down = true;
if (down) colour.A += 3;
else colour.A -= 3;
if (mouse.LeftButton == ButtonState.Pressed)
isClicked = true;
}
// Once the mouse cursor has moved away from the button, the opacity will begin to increase.
else if (colour.A < 255)
{
colour.A += 3;
isClicked = false;
}
}
public void setPosition(Vector2 newPosition)
{
position = newPosition;
}
public void Draw(SpriteBatch spriteBatch)
{
spriteBatch.Draw(texture, rectangle, colour);
}
}`
}
相关Game1.CS代码:
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;
using System;
using System.Collections.Generic;
namespace Game1
{
/// <summary>
/// This is the main type for your game.
/// </summary>
public class Game1 : Game
{
GraphicsDeviceManager graphics;
SpriteBatch spriteBatch;
public Texture2D mTexture;
public Vector2 mPosition = new Vector2(400, 0);
Sprite enemyShip;
public Vector2 Position;
player mPlayer;
player p;
MouseState previousMouseState;
public List<enemies> enemies = new List<enemies>();
Random random = new Random();
float spawn = 0; // delcaring the spawn variable as 0;
SpriteFont livesFont;
public float lives = 5;
SpriteFont scoreFont;
SpriteFont ammoFont;
public int ammoCount = 30;
Button playButton;
KeyboardState previousKeyboardState;
enum GameState
{
startMenu,
Loading,
Playing,
Paused,
}
// GameState gameState = new GameState();
GameState gameState = GameState.startMenu; // this is the state that it will load first.
enum MusicState
{
musicPause,
musicPlay,
}
MusicState musicState = MusicState.musicPlay;
public Game1()
{
graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";
}
protected override void Initialize()
{
previousKeyboardState = Keyboard.GetState();
mPlayer = new player();
enemyShip = new Sprite();
p = new player();
IsMouseVisible = true; // this allows the mouse to be visible within the game.
base.Initialize();
}
protected override void LoadContent()
{
spriteBatch = new SpriteBatch(GraphicsDevice);
playButton = new Button(Content.Load<Texture2D>("startButton"), graphics.GraphicsDevice);
playButton.setPosition(new Vector2(300, 200)); // setting position of the playButton.
mPlayer.LoadContent(this.Content);
mPlayer.bulletText = Content.Load<Texture2D>("bullet1"); // can load the texture this way, similiar to the line of code above.
mPlayer.LoadContent(this.Content, "spaceship");
enemyShip.LoadContent(this.Content, "enemyShip");
// loading SpriteFonts
scoreFont = Content.Load<SpriteFont>("NewSpriteFont");
livesFont = Content.Load<SpriteFont>("NewSpriteFont");
ammoFont = Content.Load<SpriteFont>("NewSpriteFont");
}
protected override void UnloadContent()
{
}
/// <param name="theGameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime theGameTime)
{
// keyboard and mouseStates
KeyboardState currentKeyboardState = Keyboard.GetState();
MouseState mouseState = Mouse.GetState();
previousMouseState = mouseState;
// switch case for gameStates
switch (gameState)
{
case GameState.startMenu:
if (playButton.isClicked == true)
{
gameState = GameState.Playing;
playButton.Update(mouseState);
}
break;
case GameState.Playing:
break;
}
// Pausing and playing the game and music
if (gameState == GameState.Playing)
{
if (currentKeyboardState.IsKeyDown(Keys.P) && previousKeyboardState.IsKeyUp(Keys.P))
{
gameState = GameState.Paused;
}
}
else if (gameState == GameState.Paused)
{
if (currentKeyboardState.IsKeyDown(Keys.P) && previousKeyboardState.IsKeyUp(Keys.P))
{
gameState = GameState.Playing;
}
}
if (musicState == MusicState.musicPlay)
{
if (currentKeyboardState.IsKeyDown(Keys.M) && previousKeyboardState.IsKeyUp(Keys.M))
{
MediaPlayer.Pause();
musicState = MusicState.musicPause;
}
}
else if (musicState == MusicState.musicPause)
{
if (currentKeyboardState.IsKeyDown(Keys.M)&& previousKeyboardState.IsKeyUp(Keys.M))
{
MediaPlayer.Play(song);
musicState = MusicState.musicPlay;
}
}
previousKeyboardState = currentKeyboardState;
colliitionDetection();
respawn();
loadEnemies(); // loads enemies through update.
spawn += (float)theGameTime.ElapsedGameTime.TotalSeconds;
foreach (enemies enemy in enemies) // foreach loop
enemy.Update(graphics.GraphicsDevice); // updating the enemy.
foreach (enemies enemy in enemies)
{
for (int b = 0; b < p.mbullets.Count; b++)
{
if (enemy.boundingBoxEnemy.Intersects(p.mbullets[b].boundingBoxBullet))
{
Console.WriteLine("please fucking work");
enemy.isVisible = false;
}
}
}
Vector2 aDirection = new Vector2(-1, 0); //aDirection - as the sprites are moving to the left we are decreasing the X direction.
Vector2 aSpeed = new Vector2(100, 0);
mPlayer.Update(theGameTime); // updating the player through here.
}
public void colliitionDetection()
{
for (int i = 0; i < enemies.Count; i++)
{
if (mPlayer.boundingBox.Intersects(enemies[i].boundingBoxEnemy))
{
mPlayer.Position.X = mPlayer.Position2.X;
/* Basicallyy what is happening, if the player hits the enemy it will stpawn him at position2, this is beacuase the player will always start the game at the start position, it is a 'const' unchangeable, but by saying that
* 'mPlayer.Position.X = mPlayer.Position2.X;' you are saying stating new coordinates for the player to spawn too, basically simple as that can't make it easier to understand you understand? ... needs to be a vector 2 aswell to use the xy
* */
if (mPlayer.Position.X == mPlayer.Position2.X)
{
//p.playerHealth -
lives = lives - 1;
respawn();
}
}
}
}
protected override void Draw(GameTime theGameTime)
{
graphics.GraphicsDevice.Clear(Color.CornflowerBlue);
spriteBatch.Begin(); // sprite batch objects are what is used to draw the 2D images on the screen
// switch statement
// a switch statement that will draw sprites and fonts depending on the gameState
switch (gameState)
{
case GameState.startMenu: // the line below isn't being displayed on the screen...
playButton.Draw(this.spriteBatch); // SOMETHING WRONG WITH THIS.
// spriteBatch.Draw(Content.Load<Texture2D>("menuScreen"), new Rectangle (0,0 , 800, 600), Color.White);
break;
case GameState.Playing:
// spriteBatch.Draw(mTexture, mPosition, Color.White);
mBackground1.Draw(this.spriteBatch);
mBackground2.Draw(this.spriteBatch);
mBackground3.Draw(this.spriteBatch);
mBackground4.Draw(this.spriteBatch);
mBackground5.Draw(this.spriteBatch);
foreach (enemies enemy in enemies)
enemy.Draw(spriteBatch);
mPlayer.Draw(this.spriteBatch);
enemyShip.Draw(this.spriteBatch);
spriteBatch.DrawString(livesFont, lives.ToString(+lives + " lives remaining: "), new Vector2(600, 20), Color.Red);
// spriteBatch.DrawString(scoreFont, score.ToString("score " + score + " :"), new Vector2(100, 20), Color.Red);
spriteBatch.DrawString(ammoFont, ammoCount.ToString("ammo " + ammoCount + ":"), new Vector2(600, 100), Color.Green);
break;
case GameState.Loading:
break;
case GameState.Paused:
break;
}
spriteBatch.End(); // the end is used so once you've added everything you wanted to add to the screen the end will draw them all for you.
base.Draw(theGameTime);
}
}
我去掉了一些与手头问题无关的代码。如果你能更容易地解决这个问题，然后让我知道，我会张贴所有的代码为game1类。
许多谢谢。
虽然有…在这段代码中有许多改进的空间(为什么你的按钮继承自Game1类只是一个例子)，我相信你的问题是由于你的按钮从未初始化矩形属性。你在构造函数中设置了你的大小，但是你的矩形直到update方法被调用才被初始化/设置。意思是直到按钮。更新方法被调用你的矩形是宽度和高度0,0。你的按钮。Update方法在按钮被点击之前不会被调用。这就是为什么按钮不可见。因此，为了解决眼前的问题，在构造函数中初始化矩形。
public Button(Texture2D newText, GraphicsDevice graphics)
{
texture = newText;
size = new Vector2(graphics.Viewport.Width / 20, graphics.Viewport.Height / 10);
rectangle = new Rectangle(0, 0, size.X, size.Y);
}