أنا عندي مشروع صاروخ و ثلاث سيارات المفروض انه السيارات تطلع من يسار الشاشة ليمينها وترجع تطلع بإستمرار والصاروخ مفروض يطلع منه قذيفة لتدمير السيارات إلى الآن إستطعت فقط أن أجعل السيارات تطلع من اليسار لليمين مرة واحدة وطلقة واحدة من الصاروخ وذلك بالضغط على المسافة في الكيبورد آمل المساعدة وجزاكم الله  خير
هذه نسخة الأكواد عندي
 بالله ضروري أحد يرد علي مرة حايس وأبغى أحا مشكل التصادم مع الطلقة 

 

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;namespace
CarMovement{

///
/// This is the main type for your game
///
publicclassCarGame1 : Microsoft.Xna.Framework.Game{
GraphicsDeviceManager graphics;
SpriteBatch spriteBatch;
Texture2D carTexture;
Texture2D SShipTexture;
Texture2D ShotTexture;
Texture2D background;
Vector2 carOrigin = 
new Vector2(64, 32);Vector2 position = 
new Vector2(0, 200);Vector2 position2 = 
new Vector2(10, 150);Vector2 position3 = 
new Vector2(20, 300);Vector2 position1 = 
new Vector2(700, 259);
float angle = -MathHelper.PiOver2;
float speed;
int x = 0;
int shuttle = 1; 


bool ShotFlying = false;Vector2 ShotPosition = 
new Vector2(700, 290);Vector2 ShotDirection;
Vector2 SShipPosition;
Vector2 SShipDirection;

float ShotAngle;
float ShotScaling = 0.1f;
int screenWidth;
int screenHeight;
public CarGame1(){
graphics = 
new GraphicsDeviceManager(this);Content.RootDirectory = 
"Content";}

///
/// 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.
///
protectedoverridevoid Initialize(){

// TODO: Add your initialization logic here
base.Initialize();}

///
/// LoadContent will be called once per game and is the place to load
/// all of your content.
///
protectedoverridevoid LoadContent(){

// Create a new SpriteBatch, which can be used to draw textures.spriteBatch = 
new SpriteBatch(GraphicsDevice);background = Content.Load(
"stars"); // change these names to the names of your imagescarTexture = Content.Load(
"Car");SShipTexture = Content.Load(
"SShip");ShotTexture = Content.Load(
"Bubble2");

// TODO: use this.Content to load your game content here}

///
/// UnloadContent will be called once per game and is the place to unload
/// all content.
///
protectedoverridevoid UnloadContent(){

// TODO: Unload any non ContentManager content here}

///
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
///
///Provides a snapshot of timing values.
protectedoverridevoid Update(GameTime gameTime){
KeyboardState keyboard = Keyboard.GetState();
keyboard = Keyboard.GetState();

if (keyboard.IsKeyDown(Keys.Left)){
SShipPosition.X -= 5;
}

elseif (keyboard.IsKeyDown(Keys.Right)){
SShipPosition.X += 5;
}

if (keyboard.IsKeyDown(Keys.Up)){
SShipPosition.Y -= 5;
}

elseif (keyboard.IsKeyDown(Keys.Down)){
SShipPosition.Y += 5;
} 

// Allows the game to exit
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
this.Exit(); 

// TODO: Add your update logic hereangle = 0.00f;


// KeyboardState keyboard = Keyboard.GetState();
//if (keyboard.IsKeyDown(Keys.Space))
//{
// position = new Vector2(GraphicsDevice.Viewport.Width,
// GraphicsDevice.Viewport.Height) / 2;
// angle = -MathHelper.PiOver2;
//}position += speed * 
new Vector2((float)Math.Cos(angle),(
float)Math.Sin(angle));position2 += speed * 
new Vector2((float)Math.Cos(angle),(
float)Math.Sin(angle));position3 += speed * 
new Vector2((float)Math.Cos(angle),(
float)Math.Sin(angle));x = x + 1;

//speed *= 0.95f;
if ((x == 4)){
position.X = 0;
position.Y = 200;
spriteBatch.Begin();
spriteBatch.Draw(carTexture, position, 
null, Color.White, angle, carOrigin,0.5f, SpriteEffects.None, 0.0f);
spriteBatch.End();

//DrawCar();}

speed += 0.10f;

//KeyboardState keyboard = Keyboard.GetState();
//if (keyboard.IsKeyDown(Keys.Enter) || keyboard.IsKeyDown(Keys.Space))
//{
//DrawShot();
//// ShotFlying = true;
//}
//DrawShot();
//// if (ShotFlying==true)
// ShotPosition.X -= 6;ProcessKeyboard();




base.Update(gameTime);}

privatevoid ProcessKeyboard(){
KeyboardState keyboard = Keyboard.GetState();
keyboard = Keyboard.GetState();

if (keyboard.IsKeyDown(Keys.Left)){
SShipPosition.X -= 5;
}

elseif (keyboard.IsKeyDown(Keys.Right)){
SShipPosition.X += 5;
}

if (keyboard.IsKeyDown(Keys.Up)){
SShipPosition.Y -= 5;
}

elseif (keyboard.IsKeyDown(Keys.Down)){
SShipPosition.Y += 5;
} 

if (keyboard.IsKeyDown(Keys.Enter) || keyboard.IsKeyDown(Keys.Space)){

//DrawShot();
//{ShotFlying = 
true;ShotPosition = position1;

//////ShotAngle = players[currentPlayer].Angle;
//Vector2 front = new Vector2(0, -1);Matrix rotMatrix = Matrix.CreateRotationZ(ShotAngle);

//ShotDirection = Vector2.Transform(up, rotMatrix);
//ShotDirection *= shot[currentPlayer].Power / 50.0f;}


if (ShotFlying)ShotPosition.X -= 6;
ShotFlying = 
true;
}

privatevoid DrawShot(){


//KeyboardState keyboard = Keyboard.GetState();
//if (keyboard.IsKeyDown(Keys.Enter) || keyboard.IsKeyDown(Keys.Space))
//{
// spriteBatch.Begin();
if (ShotFlying)spriteBatch.Draw(ShotTexture, ShotPosition, 
null, Color.White, ShotAngle, new Vector2(42, 240), 0.3f, SpriteEffects.None, 1);

//spriteBatch.End(); 
// ShotFlying = true;
//} 

//if (ShotFlying == true)
// ShotPosition.X -= 6;}

//private void DrawCar()
//{
// spriteBatch.Begin();
// spriteBatch.Draw(carTexture, position, null, Color.White, angle, carOrigin,
// 0.5f, SpriteEffects.None, 0.0f);
// spriteBatch.End();
//}
//private void UpdateShot()
//{
// if (ShotFlying)
// {
// ShotPosition.X -= 4;
// }
//}
///
/// This is called when the game should draw itself.
///
///Provides a snapshot of timing values.
/// 

protectedoverridevoid Draw(GameTime gameTime){
GraphicsDevice.Clear(Color.CornflowerBlue);

// TODO: Add your drawing code hereGraphicsDevice.Clear(Color.CornflowerBlue);
spriteBatch.Begin();


// To Draw the backgroud for the ScreenspriteBatch.Draw(background, 
new Rectangle(0, 0, 1200, 1200), Color.White);
//spriteBatch.Draw(carTexture, position, null, Color.White, angle, carOrigin,
// 0.5f, SpriteEffects.None, 0.0f);spriteBatch.Draw(carTexture, position, 
null, Color.White, angle, carOrigin,0.5f, SpriteEffects.None, 0.0f);
spriteBatch.Draw(carTexture, position2, 
null, Color.White, angle, carOrigin,0.5f, SpriteEffects.None, 0.10f);
spriteBatch.Draw(carTexture, position3, 
null, Color.White, angle, carOrigin,0.5f, SpriteEffects.None, 0.20f);

//DrawCar();spriteBatch.Draw(SShipTexture, position1, 
null, Color.White, MathHelper.PiOver2, carOrigin,1.00f, SpriteEffects.None, 0.0f);
DrawShot();


//spriteBatch.Draw(ShotTexture, ShotPosition, null, Color.White, ShotAngle, new Vector2(42, 240), 0.5f, SpriteEffects.None, 1);spriteBatch.End();



base.Draw(gameTime);}

privatevoid DrawScenery(){
Rectangle screenRectangle = 
new Rectangle(0, 0, screenWidth, screenHeight);spriteBatch.Draw(background, screenRectangle, Color.White);
}

//private void shuttles()
//{
// foreach (shuttles item in shuttle)
// {

// }}
} 

السلام عليكم بخصوص السياره سوف اقول لك الفكره وعليك الكود لأنى استخدم الفجول بيسك  انت تريد للسياره عندما تصل الى يمين الشاشه ترجع الى اليسار حسناً السياره لها متغيران ال  

 x & y

 سوف نعمل على ال

x

 حيث انه المسئول عن تحريك السياره يمين ويسار عليك معرفة, 

x 

 1- عندما تكون السياره يسار الشاشه فلنفترض ان ال

x=0

عندما تكون السياره يمين الشاشه فلنفترض ان ال

x=800

اذاً سوف يكون الكود

if x > 800 then x = 0

جرب وقولى ما النتيجة.

أخي جزاك الله خير وماقصرت ألف شكر والله يعطيك العافية