Читаем Справочник Жаркова по проектированию и программированию искусственного интеллекта. Том 7: Программирование на Visual C# искусственного интеллекта. Издание 2 полностью

g.DrawString(messageString, messageFont, messageBrush,

messageRectangle);

}

//We draw the image on the Form1:

e.Graphics.DrawImage(backBuffer, 0, 0);

} //End of the method Form1_Paint.

Приведённый выше код в теле метода Form1_Load (для загрузки файлов изображений игровых объектов) заменяем на тот, который дан на следующем листинге.

Листинг 5.10. Метод для загрузки файлов изображений.

private void Form1_Load(object sender, EventArgs e)

{

//We load into objects of the System.Drawing.Image class

//the image files of the set format, added to the project,

//by means of ResourceStream:

cheeseImage =

new Bitmap(myAssembly.GetManifestResourceStream(

myName_of_project + "." + "cheese.JPG"));

breadImage =

new Bitmap(myAssembly.GetManifestResourceStream(

myName_of_project + "." + "bread.JPG"));

//We initialize the rectangles, described around objects:

cheeseRectangle = new Rectangle(cx, cy,

cheeseImage.Width, cheeseImage.Height);

breadRectangle = new Rectangle(bx, by,

breadImage.Width, breadImage.Height);

//We load the image file of a new object:

tomatoImage =

new Bitmap(myAssembly.GetManifestResourceStream(

myName_of_project + "." + "tomato.gif"));

//We initialize an array of new objects and rectangles,

//described around these objects:

initialiseTomatoes;

//We place new objects in an upper part of the screen:

placeTomatoes;

//We create and initialize a font for record of points:

messageFont = new Font(FontFamily.GenericSansSerif, 10,

FontStyle.Regular);

//We reserve a rectangle on the screen

//for record of points:

messageRectangle = new Rectangle(0, 0,

this.ClientSize.Width, scoreHeight);

//We set the color of a brush for record of points:

messageBrush = new SolidBrush(Color.Black);

//We turn on the timer:

timer1.Enabled = true;

} //End of the method Form1_Load.

И наконец, вместо приведённого выше метода updatePositions записываем следующий метод, дополненный новым кодом для изменения координат, обнаружения столкновений объектов, уничтожения помидоров и подсчёта очков.

Листинг 5.11. Метод для изменения координат и обнаружения столкновения объектов.

private void updatePositions

{

if (goingRight)

{

cx += xSpeed;

}

else

{

cx -= xSpeed;

}

if ((cx + cheeseImage.Width) >= this.Width)

{

goingRight = false;

//At the time of collision, the Beep signal is given:

Microsoft.VisualBasic.Interaction.Beep;

}

if (cx <= 0)

{

goingRight = true;

//At the time of collision, the Beep signal is given:

Microsoft.VisualBasic.Interaction.Beep;

}

if (goingDown)

{

cy += ySpeed;

}

else

{

cy -= ySpeed;

}

//That cheese did not come for the button3.Location.Y:

if ((cy + cheeseImage.Height) >= button3.Location.Y)

{

goingDown = false;

//At the time of collision, the Beep signal is given:

Microsoft.VisualBasic.Interaction.Beep;

}

if (cy <= 0)

{

goingDown = true;

//At the time of collision, the Beep signal is given:

Microsoft.VisualBasic.Interaction.Beep;

}

//We set to rectangles of coordinate of objects:

cheeseRectangle.X = cx;

cheeseRectangle.Y = cy;

breadRectangle.X = bx;

breadRectangle.Y = by;

// check for collisions.

if (goingDown)

{

// only bounce if the cheese is going down

if (cheeseRectangle.IntersectsWith(breadRectangle))

{

//At the time of collision,

//the Beep signal is given:

Microsoft.VisualBasic.Interaction.Beep;

// we have a collision

bool rightIn = breadRectangle.Contains(

cheeseRectangle.Right,

cheeseRectangle.Bottom);

bool leftIn = breadRectangle.Contains(

cheeseRectangle.Left,

cheeseRectangle.Bottom);

// now deal with the bounce

if (rightIn & leftIn)

{

// bounce up

goingDown = false;

}

else

{

// bounce up

goingDown = false;

// now sort out horizontal bounce

if (rightIn)

{

goingRight = false;

}

if (leftIn)

{

goingRight = true;

}

}

}

}

else

{

// only destroy tomatoes of the cheese is going up

for (int i = 0; i < tomatoes.Length; i++)

{

if (!tomatoes[i].visible)

{

continue;

}

if (cheeseRectangle.IntersectsWith(

tomatoes[i].rectangle))

{

//At the time of collision,

//the Beep signal is given:

Microsoft.VisualBasic.Interaction.Beep;

// hide the tomato

tomatoes[i].visible = false;

// bounce down

goingDown = true;

// update the score

scoreValue = scoreValue + 10;

messageString = "Points : " + scoreValue;

// only destroy one at a time

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