image rotation???

[oXHutchXo]

i tried this,

using System;   
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;   

    namespace WindowsFormsApplication1
    {
        public partial class Form1 : Form
        {
  
            int carX = 178;
            int carY = 161;
        
  
            public Form1()
  
            {
                InitializeComponent();
                this.KeyDown += new KeyEventHandler(Form1_KeyDown);
                this.KeyUp += new KeyEventHandler(Form1_KeyUp);
            }
  
            private void Form1_Load(object sender, EventArgs e)
            {
  
            }
            
            void Form1_KeyDown(object sender, KeyEventArgs e)
            {

                if (e.KeyCode == Keys.Up)
                {
                    carY--;
                    this.carImage.Location = new Point(carX, carY);
                }

                if (e.KeyCode == Keys.Left)
                {
                    
                }

            }
           
            public static Image RotateImage(Image carImage, float rotationAngle)
            {
                Bitmap bmp = new Bitmap(carImage.Width, carImage.Height);
                Graphics gfx = Graphics.FromImage(bmp);
                gfx.TranslateTransform((float)bmp.Width / 2, (float)bmp.Height / 2);
                gfx.RotateTransform(rotationAngle);
                gfx.TranslateTransform(-(float)bmp.Width / 2, (float)bmp.Height / 2);
                gfx.DrawImage(carImage, new Point(0, 0));
                return bmp;
            }

            void Form1_KeyUp(object sender, KeyEventArgs e)
            {
                while (e.KeyCode == Keys.Up && carY != 161)
                {
                    
                    if (carY > 161)
                    {
                        carY--;
                    }
                    
                    if (carY < 161)
                    {
                        carY++;
                    }
                    this.carImage.Location = new Point(carX, carY);
                }
            } 
        }
    }

but the car (image) does not rotate at all.

So here are my questions.

1. how can i get the car to rotate clockwise when i hit the left arrow key?
2. is it possible to turn the car whilst it is moving forward, if so how?

help is greatly appreciated!!!

[ddanbe]

Basically you should implement a Paint method.
Have a look at this snippet: http://www.daniweb.com/code/snippet227743.html

[farooqaaa]

Okay. Here's your complete game. It does exactly what you want.

Here's how it works:

* Use Up key to move forward and Down key to move backward. The car will move forward/backward in the pointed direction.
* Use Left key to rotate anti-clockwise and Right key to rotate clockwise.
* The car will not go out of the form i.e it won't go out of sight.

The Code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        // Car's location
        Point carLocation;

        // The speed at which the car will move
        int speed = 5;

        // >>>>>>>>>>>> 0 = Forward, 1 = Right, 2 = Backward, 3 = Left
        int direction = 0;

        private void rotateImage(int angle)
        {
            Bitmap img = new Bitmap(pictureBox1.Image);

            // Clockwise

            if (angle == 1) 
                img.RotateFlip(RotateFlipType.Rotate90FlipNone);

            // Anti-Clockwise

            else if (angle == 2) 
                img.RotateFlip(RotateFlipType.Rotate90FlipXY);

            pictureBox1.Width = img.Width;
            pictureBox1.Height = img.Height;
            pictureBox1.Image = img;
        }

        public Form1()
        {
            InitializeComponent();

            this.KeyDown += new KeyEventHandler(Form1_KeyDown);

            carLocation = pictureBox1.Location;
        }

        private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            // Avoid the car from moving out of sight

            if (carLocation.X > this.ClientSize.Width - pictureBox1.Width)
            {
                carLocation.X = this.ClientSize.Width - pictureBox1.Width;
            }

            if (carLocation.X <= 0)
            {
                carLocation.X = 0;
            }

            if (carLocation.Y > this.ClientSize.Height - pictureBox1.Height)
            {
                carLocation.Y = this.ClientSize.Height - pictureBox1.Height;
            }

            if (carLocation.Y <= 0)
            {
                carLocation.Y = 0;
            }

            // Move forward in the direction in which the car is pointed

            if (e.KeyCode == Keys.Up)
            {
                if (direction == 0) // Forward
                {
                    carLocation.Y -= speed;
                }
                if (direction == 2) // Backward
                {
                    carLocation.Y += speed;
                }
                if (direction == 1) // Right
                {
                    carLocation.X += speed;
                }
                if (direction == 3) // Left
                {
                    carLocation.X -= speed;
                }
            }

            // Move backward in the direction in which car is pointed

            if (e.KeyCode == Keys.Down)
            {
                // This is opposite of KeyDown.

                if (direction == 0) // Forward
                {
                    carLocation.Y += speed;
                }
                else if (direction == 2) // Backward
                {
                    carLocation.Y -= speed;
                }
                else if (direction == 1) // Right
                {
                    carLocation.X -= speed;
                }
                else if (direction == 3) // Left
                {
                    carLocation.X += speed;
                }
            }

            // Rotate the car anti-clockwise
            if (e.KeyCode == Keys.Left)
            {
                rotateImage(2); // rotate anti-clockwise
                direction--;

                if (direction < 0)
                    direction = 3;
            }

            // Rotate the car clockwise
            if (e.KeyCode == Keys.Right)
            {
                rotateImage(1); // rotate clockwise
                direction++;

                if (direction > 3)
                    direction = 0;
            }

            pictureBox1.Location = carLocation;
        }
    }
}

Enjoy.

Thanks

[AlickIMAGE]

Check this image rotating sample code in vb .net