C ＃ game prototype character map dual movement

1. Design starting point

Prepare to make a short travel video , Want to achieve the effect of a villain or car moving on Baidu map according to the specified route , Take out the code you wrote before , Modified to complete .

Main modifications ：

（1） Realized the double movement of character map . That is, if the character moves to the middle of the screen , Mobile character ; People move around the screen , If you can move the map, move the map , Otherwise move the character .

（2） The original one-way moving animation of the character is replaced by four-way moving animation

（3） Fixed the problem of character ghosting after pressing the key

（4） Several variables with ambiguous meanings have been modified

Unresolved bug： When you press the key to control the person to move, it will flash

2. Main update code

（1） Timer code

private void T200_Tick(object sender, EventArgs e)
        {
            t200.Stop();
            Bitmap person1 = new Bitmap(person16.Width/4, person16.Height/4);
            winPoint point = new winPoint(0, 0);
            cnt++;
            if (cnt > 3) cnt = 0;
            point.X = -1*cnt * person1.Width;// Action of different characters x The coordinates are different 
            point.Y = -1 * direct * person1.Height;
            using (Graphics g = Graphics.FromImage(person1))
            {
                g.DrawImage(person16, point);// Complete character switching and action superposition 
            }
            using (Graphics g0 = Graphics.FromImage(pictureBox1.Image))
            {
                //g0.DrawImage()
                g0.DrawImage(allBitmap, mapPoint);// Not good. , But I don't know how to solve it 
                g0.DrawImage(person1, personPt.X,personPt.Y);// Draw the overlay of people and background on the map 
            }
            pictureBox1.Refresh();
            t200.Start();
        }

（2） Character movement and map relative movement code

case 'D':
                    direct = 2;
                    if (personPt.X > (pictureBox1.Size.Width - person16.Width / 4)/2)// Across the middle of the screen 
                    {// If the map can be moved , Then move the map 
                        mapPoint.X -= 10;
                        if (mapPoint.X + allBitmap.Size.Width < currBitmap.Size.Width)// The map is on the edge 
                        {
                            mapPoint.X += 10;
                            personPt.X += 10;
                            if (personPt.X > pictureBox1.Size.Width - person16.Width / 4)
                                personPt.X = pictureBox1.Size.Width - person16.Width / 4;
                        }
                    }
                    else
                    {
                        personPt.X += 10;// It's not in the center of the screen yet , Mobile people 
                        if (personPt.X > pictureBox1.Size.Width - person16.Width / 4)
                            personPt.X = pictureBox1.Size.Width - person16.Width / 4;
                    }
                    break;