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;
using Microsoft.Xna.Framework.Net;
using Microsoft.Xna.Framework.Storage;
namespace trancity
{
/// <summary>
/// This is the main type for your game
/// </summary>
public class Game1 : Microsoft.Xna.Framework.Game
{
GraphicsDeviceManager graphics;
SpriteBatch spriteBatch;
// графический компонент
// массив вершин
VertexPositionColor[] vertexList;
// описание формата вершин
VertexDeclaration vertexDeclaration;
// эффект BasicEffect
BasicEffect effect;
public Game1()
{
graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";
}
/// <summary>
/// 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.
/// </summary>
protected override void Initialize()
{
// TODO: Add your initialization logic here
base.Initialize();
}
/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
// создать массив-контейнер для хранения трёх вершин
vertexList = new VertexPositionColor[3];
// создать в массиве вершин три вершины типа VertexPositionColor
//описывающих 3D-треугольник
vertexList[0] = new VertexPositionColor(new Vector3(0, 0.5f, 0),
Color.Gray);
vertexList[1] = new VertexPositionColor(new Vector3(-0.5f, -0.5f, 0),
Color.Gray);
vertexList[2] = new VertexPositionColor(new Vector3(0.5f, -0.5f, 0),
Color.Gray);
// создать описание формата вершин
vertexDeclaration = new VertexDeclaration(
graphics.GraphicsDevice,
VertexPositionColor.VertexElements);
// создать эффект BasicEffect
effect = new BasicEffect(graphics.GraphicsDevice, null);
// TODO: use this.Content to load your game content here
}
/// <summary>
/// UnloadContent will be called once per game and is the place to unload
/// all content.
/// </summary>
protected override void UnloadContent()
{
// TODO: Unload any non ContentManager content here
}
/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
// Allows the game to exit
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
this.Exit();
// TODO: Add your update logic here
base.Update(gameTime);
}
/// <summary>
/// This is called when the game should draw itself.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Draw(GameTime gameTime)
{
// отчистка экрана в синий цвет
graphics.GraphicsDevice.Clear(Color.Blue);
// использовать для отрисовки эффект BasicEffect
effect.Begin();
// начать отрисовку первого прохода
effect.CurrentTechnique.Passes[0].Begin();
// указать описание формата вершин
graphics.GraphicsDevice.VertexDeclaration = vertexDeclaration;
// отключить отсечение невидимых поверхностей
graphics.GraphicsDevice.RenderState.CullMode = CullMode.None;
// нарисовать треугольник используя массив вершин
graphics.GraphicsDevice.DrawUserPrimitives<VertexPositionColor>
(PrimitiveType.TriangleL is t, vertexList, 0, 1);
// завершить первый проход
effect.CurrentTechnique.Passes[0].End();
// завершить использование эффекта BasicEffect
effect.End();
// вывод сцены на экран
base.Draw(gameTime);
}
}
}
