[e-mail]

1
418383 ?????????????????????????????? 3

• ?????? ???????
• pramook_at_gmail.com

2
XNA

• ??????????? C ??? Microsoft ??????????????
• Platform ???????? PC, Xbox, Zune
• ??????????
• ?????? 2 ??????? 3 ????
• ??????????????????
• ?????? content ??????
• ?????????????? input ??? keyboard, mouse, joystick

3
XNA

• ????????????????????????????
• ?????????????????? hardware
• ??????????????????????????? ??????????????
  ?????????????
• ???????????????????????????
• ??????????????????????????????????????????????????
  ???????????
• ????? collision detection
• ????? physics engine
• ???????????????????????????????? 2 ???????? 3
  ????????????

4
??????????

• ????????? Visual C Express 2010
  http//www.microsoft.com/express
• ????????? Microsoft XNA Game Studio 4.0
• ?? Visual C ?????????????? XNA Game Studio

5
????????????

• ???? Visual C 2010
• ????????? File ? New Project
• ????????????? ????? XNA Game Studio 4.0
• ???????????? ????? Windows Games (4.0)
• ????????????? Name
• ???????? Solution (???????? project
  ????????????????) ?? Solution Name

6
????????????
7
???????????????????????????

• ?????? Solution Explorer ??????????
• FirstGame
• Properties
• References
• Game.ico
• Game1.cs
• GameThumbnail.png
• Program1.cs
• FirstGameContent (Content)
• References

8
???????????????????????????

• ?????? Solution Explorer ??????????
• FirstGame ? ?????????????????????????
• Properties
• References
• Content References
• Game.ico
• Game1.cs
• GameThumbnail.png
• Program1.cs
• FirstGameContent (Content)
• References

9
???????????????????????????

• ?????? Solution Explorer ??????????
• FirstGame
• Properties ? ?????????????????????????????????????
  
• References
• Content References
• Game.ico
• Game1.cs
• GameThumbnail.png
• Program1.cs
• FirstGameContent (Content)
• References

10
???????????????????????????

• ?????? Solution Explorer ??????????
• FirstGame
• Properties
• References ? ?????????????????????? library
  ????????
• Content References
• Content
• Game.ico
• Game1.cs
• GameThumbnail.png
• Program1.cs
• FirstGameContent (Content)
• References

11
???????????????????????????

• ?????? Solution Explorer ??????????
• FirstGame
• Properties
• References
• Content References
• Game.ico
• Game1.cs
• GameThumbnail.png
• Program1.cs
• FirstGameContent (Content) ? ???? content (???,
  ????) ??????
• References

12
???????????????????????????

• ?????? Solution Explorer ??????????
• FirstGame
• Properties
• References
• Content References ? ????????? content project
  ???????
• Game.ico
• Game1.cs
• GameThumbnail.png
• Program1.cs
• FirstGameContent (Content)
• References

13
???????????????????????????

• ?????? Solution Explorer ??????????
• FirstGame
• Properties
• References
• Content References
• Game.ico ??????
• Game1.cs
• GameThumbnail.png
• Program1.cs
• FirstGameContent (Content)
• References

14
???????????????????????????

• ?????? Solution Explorer ??????????
• FirstGame
• Properties
• References
• Content References
• Game.ico
• Game1.cs ?????????
• GameThumbnail.png
• Program1.cs
• FirstGameContent (Content)
• References

15
???????????????????????????

• ?????? Solution Explorer ??????????
• FirstGame
• Properties
• References
• Content References
• Game.ico
• Game1.cs
• GameThumbnail.png ??????????????????? Xbox
• Program1.cs
• FirstGameContent (Content)
• References

16
???????????????????????????

• ?????? Solution Explorer ??????????
• FirstGame
• Properties
• References
• Content References
• Game.ico
• Game1.cs
• GameThumbnail.png
• Program1.cs ????????? main
• FirstGameContent (Content)
• References

17
Program.cs

• using System
• namespace FirstGame
• static class Program
• /// ltsummarygt
• /// The main entry point for the
  application.
• /// lt/summarygt
• static void Main(string args)
• using (Game1 game new Game1())
• game.Run()

18
Program.cs

• ?????????? main
• ?????????????????????????? ??????????? ??????
• ?? main ?????????? instance ??? Game1
• ?????????????? run ??????? Game1
• ????? run ?????????
• ???? Game1 ??????????????

19
Game1.cs

• ????????? Game1 ???????????????????????????????
• Game1 ???? subclass ??? Microsoft.Xna.Framework.Ga
  me(???????????????? XNA ???????)

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???????? Microsoft.XNA.Framework.Game

• void Initialize()
• ?????????????????????????? content ??????
• void LoadContent()
• ??????? content
• void UnloadContent()
• ?????????????????? content ???????????????????????
  ???
• void Update(GameTime gameTime)
• ???????????????????????????????????
• ???????????? logic ???????????
• void Draw(GameTime gameTime)
• ????????????????????????

21
Flowchart ??????????????? Game
????? (????? Run)
Initialize()
LoadContent()
Update()
Draw()
??????????
??????
UnloadContent()
22
(No Transcript)
23
?????????? ?? Game1.cs

• Constructor
• public Game1()
• graphics new GraphicsDeviceManager(this)
• Content.RootDirectory "Content"
• GraphicsDeviceManager ? ????????????
• Content ? ?????? content ??????

24
?????????? ?? Game1.cs

• Initialize()UnloadContent()
• ?????????????????????????? method ???????????
  superclass
• LoadContent()
• protected override void LoadContent()
• spriteBatch new SpriteBatch(GraphicsDevice)
• ????? spriteBatch ? object ????????????????????

25
?????????? ?? Game1.cs

• Update()
• 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)

26
?????????? ?? Game1.cs

• GamePad ? ?????? input ??? joystick ??? XBOX
• ????????????????????????????? back
  ??????????????? 1 ????????????????
• ??????????? this.Exit() ??????????????????
• ?????????????????????
• ??????????????? PC ?????? Keyboard ????????????
• ??????????????????? GamePad ??????

27
?????????? ?? Game1.cs

• Draw()
• protected override void Draw(GameTime gameTime)
• GraphicsDevice.Clear(Color.CornflowerBlue)
• base.Draw(gameTime)
• ??????????????????? CornflowerBlue

28
???????
29
??????????
30
??????????
31
???????????? Content

• ????????????????????????????? ???????????????????
  Content ????
• ?????????? HelloWorldContent ????????? Add ? New
  Item
• ????????????????????????????????????????????

32
???????????? Content

• ???????????? Content ????????????????????
• ?????????????? Properties ????? Asset Name
  ??????
• ???????? Asset Name ??????????????????????

33
??????????????????????

• ??????????????????? ??????????????????????????????
  
• ????????????? ????????????? Content ????
• ????? XNA ??????????? object ???? Texture2D
• ???????????????? 2 ??? ??????????, ????????
• ????? field ???? Texture2D ???????????? 2 field
• public class HelloWorld Microsoft.Xna.Framework.
  Game
• GraphicsDeviceManager graphics
• SpriteBatch spriteBatch
• Texture2D background
• Texture2D sprite

34
??????????????????????

• ?????????????????????????? ??????? LoadContent()
• protected override void LoadContent()
• spriteBatch new SpriteBatch(GraphicsDevice)
• background Content.LoadltTexture2Dgt("kagami-wal
  lpaper")
• sprite Content.LoadltTexture2Dgt("kagami")

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Content.Load

• ????? type parameter ?????????????????????????????
  ????
• ??????????? Texture2D
• ?? argument ???????? Asset Name
  ?????????????????
• ?????????????????????????????????????????? Asset
  Name ????????
• ??????????? Content.Load ????
• ???
• ?????
• ??????????????????? (????????????????? 6)

36
????????????????????

• ??????
• graphics.PreferredBackBufferWidth (?????????)
• graphics.PreferredBackBufferHeight (???????)
• ?? contructor
• public HelloWorld()
• graphics new GraphicsDeviceManager(this)
• // Setting the window's size.
• graphics.PreferredBackBufferWidth 800
• graphics.PreferredBackBufferHeight 600
• Content.RootDirectory "Content"

37
???? coordinate

• ??????????????????????????????????
• ????????????????????????????
• (0,0) ?????????????????????????????
• (w, h) ????????????????????????????????????????
  ????? w ????????? ??? h ?????????????????

38
???? coordinate
(0,0)
(w,h)
39
????????????????????

• ?????????????????????????????????????????
• ??????????????????????????????????????????????????
  ??????
• ??????????????????????????????????????????????????
  ??????????????
• ??????????????????????????? object ???? Vector2
• ?? property ???? X ??? Y ????????????????????? X
  ??? Y
• ????? field ???? spritePosition ????????????
• public class HelloWorld Microsoft.Xna.Framework.
  Game
• GraphicsDeviceManager graphics
• SpriteBatch spriteBatch
• Texture2D background
• Texture2D sprite
• Vector2 spritePosition

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??????????????????????????????

• spritePosition ???????????????????????
• ?????????????????????????? Update
• protected override void Update(GameTime gameTime)
• if ( ... )
• this.Exit()
• MouseState mouseState Mouse.GetState()
• spritePosition.X mouseState.X - sprite.Width
  / 2
• spritePosition.Y mouseState.Y - sprite.Height
  / 2
• base.Update(gameTime)

41
Mouse

• ???? object ????????????????????????????????
• ????? GetState() ??? object ?????? MouseState
  ????????????????????????????????????????????
• ??????????????????? x ??? y ?????????????????????
  ??? property X ??? Y ??? MouseState

42
??????

• ?????????? Draw
• protected override void Draw(GameTime gameTime)
• GraphicsDevice.Clear(Color.CornflowerBlue)
• spriteBatch.Begin()
• spriteBatch.Draw(background, new Vector2(0,
  0), Color.White)
• spriteBatch.Draw(sprite, spritePosition,
  Color.White)
• spriteBatch.End()
• base.Draw(gameTime)

43
SpriteBatch

• ??????????????? 2 ??????? Texture2D
• ??????????????????????? Begin
• ???????????????????????????????? End
• ??????????????????????????????????????
• ??????????????? Draw
• ????? Draw ?? signature ??????? 7 ???
• ??????????????????????????????????
• ?????? draw ?????????????????????????? draw
  ???????????????????????

44
SpriteBatch

• spriteBatch.Draw( sprite, ? Texture2D
  spritePosition, Color.White)

45
SpriteBatch

• spriteBatch.Draw( sprite, spritePosition, ?
  ???????????????? Color.White)

46
SpriteBatch

• spriteBatch.Draw( sprite, spritePosition,
  Color.White) ? ???????? ??? ??????

47
SpriteBatch

• spriteBatch.Draw( sprite, spritePosition,
  Color.Red)
• ???????????????????????????????????????

48
??

• ?? tuple ??????????????? 3 ??? (R, G, B)
• R ???????????????????????????
• G ?????????????????????????????
• B ???????????????????????????????
• ??????????????????????? 0 ??? 2???????????????????
  ??????????????-1
• ??????????????????????? 32 ??????? 1 ??????
• ?????????? 8 ???
• ??????????????????? 255

49
Trichromatic Theory of Vision

• ????????????????????????????????????
• ??? ????? ???????
• ??????????????????????????????????????????????
• ??????? ??????? ????????????????????????????
• ???????
• ?????????????????????????
• ?????????????? ????? ??????? ????????? ????????

50
???????
(255,0,0)
(0,255,0)
(255,255,0)
(255,255,255)
(255,0,255)
(0,255,255)
(0,0,0)
(0,0,255)
51
Color

• ????????????????
• ??????????????????????????????? RGB ???
• Color color1 new Color(128, 0, 255)
• ????????????????????????? 0 ????????????????????
  ??? 1 ?????????????????
• Color color2 new Color(0.5f, 0, 1)
• ?????????????? static field ??????????????????????
  ?????? ????
• Color.Green, Color.Blue, Color.Lavender, ???

52
????????????????????????????????????
53
??????????????????????????? keyboard
54
Keyboard

• ???????????????????????????????
• ?????????? GetState()
• ??? object ?????? KeyboardState

55
KeyboardState

• ????????????????????? ??? keyboard ??????
• ??????????
• IsKeyDown(Keys key)
• ???????????????????????????
• IsKeyUp(Keys key)
• ??????????????????????????????

56
Keys

• enum ???????????????????????? ????
• Keys.A ? ???? A
• Keys.Space ? ???? space bar
• Keys.Right ? ????????????

57
???????????????????????

• KeyboardState keyboardState Keyboard.GetState()
  
• if (keyboardState.IsKeyDown(Keys.Left))
• ... Do something ...

58
????????????????????????????????????

• ??????? spritePosition ???????????????????????????
  ???????????????
• ???????
• xVelocity ? ???????????????????????????????????
• yVelocity ? ????????????????????????????????????
• ???????????????????? 5 ?????????????
• Vector2 xVelocity new Vector2(5, 0)
• Vector2 yVelocity new Vector2(0, 5)

59
???????????????????

• ??????????????????????????????????????????????????
  ?
• protected override void Update(GameTime gameTime)
• ??????????????????? back ???????????????????
  ?????
• KeyboardState keyboardState
  Keyboard.GetState()
• if (keyboardState.IsKeyDown(Keys.Left))
• spritePosition - xVelocity
• if (keyboardState.IsKeyDown(Keys.Right))
• spritePosition xVelocity
• if (keyboardState.IsKeyDown(Keys.Down))
• spritePosition yVelocity
• if (keyboardState.IsKeyDown(Keys.Up))
• spritePosition - yVelocity
• ?????????????????????????????

60
?????????????????????????????

• int screenWidth graphics.PreferredBackBufferWidt
  h
• int screenHeight graphics.PreferredBackBufferHei
  ght
• if (spritePosition.X lt 0)
• spritePosition.X 0
• if (spritePosition.X sprite.Width gt
  screenWidth)
• spritePosition.X screenWidth -
  sprite.Width
• if (spritePosition.Y lt 0)
• spritePosition.Y 0
• if (spritePosition.Y sprite.Height gt
  screenHeight)
• spritePosition.Y screenHeight -
  sprite.Height

61
?????????????????????????????
62
?????????????????????????????
63
Mouse

• ???????????????????????????
• ?????????? GetState()
• ??? object ?????? MouseState

64
MouseState

• ?????????????????????
• Property ?????
• LeftButton ? ????????????????
• RightButton ? ???????????????
• MiddleButton ? ????????????????
• X ? ??????????????
• Y ? ?????????????

65
ButtonState

• Enum ??????????????????????????
• ??????????????
• Pressed ? ?????????
• Released ? ????????????

66
????????????

• ???????????????????????????????????????????
• Texture2D cursor
• Vector2 cursorPosition
• ?? Update() ??????????????????????
• protected override void Update(GameTime gameTime)
• ????????????????????
• MouseState mouseState Mouse.GetState()
• cursorPosition new Vector2(mouseState.X,
  mouseState.Y)
• ????????????????????

67
????????????

• ?? Draw() ?????????????
• ???????????????????????????? ?????????????????????
  ????????????????????
• protected override void Draw(GameTime gameTime)
• GraphicsDevice.Clear(Color.CornflowerBlue)
• spriteBatch.Begin()
• // ???????????????? //
• spriteBatch.Draw(cursor, cursorPosition,
  Color.White)
• spriteBatch.End()
• base.Draw(gameTime)

68
?????????????????
69
?????????????????
70
??????????????? XNA

1. ????? Sprite Font ?? Content ??????
2. Load Sprite Font ?? Load Content
3. ?????????????? SpriteBatch.DrawString

71
????? Sprite Font ?? Content

• ?????????????????? DisplayingTextContent ?Add ?
  New Item

72
????? Sprite Font ?? Content

• ????? Sprite Font

73
????? Sprite Font

• ???????? sprite font ?????????????????????
• ?????????
• ????
• ???

74
Load Sprite Font ?? LoadContent()

• ?????????????? SpriteFont
• SpriteFont font01
• ??? Content.LoadltSpriteFontgt() ????????????
• protected override void LoadContent()
• // ????????????? //
• font01 Content.LoadltSpriteFontgt("font01")

75
?????????????? SpriteBatch.DrawString

• protected override void Draw(GameTime gameTime)
• GraphicsDevice.Clear(Color.White)
• spriteBatch.Begin()
• // Draw "Hello" at the center of the screen.
• Vector2 helloSize font01.MeasureString("Hell
  o")
• float centerX (graphics.PreferredBackBufferW
  idth - helloSize.X) / 2
• float centerY (graphics.PreferredBackBufferH
  eight - helloSize.Y) / 2
• Vector2 centerPosition new Vector2(centerX,
  centerY)
• spriteBatch.DrawString(
• font01,
• "Hello",
• centerPosition,
• Color.Black)
• spriteBatch.End()

76
???????????????
77
(No Transcript)
78
??????????????????????!

• ?????????????????????
• ????????????
• ???????????
• ???????????
• ??????????
• ??????????
• ??????????????
• ????????????????
• ???

79
????

• ????????????????????????
• ????????????????????????????????????????
• ?????????????????????
• ?????????????????????????????

80
?????????????????????????????

• ??????????????
• ??????????????????????????????????????????????????
  ?????? ???
• ??????????????????????????????
• ?????????????
• ??????????????????????????? ???
• ????????????????????????????????????
• ??????? ??????????? ????????? ?????????? if
  ???????????????????????
• ????????????????? if ???????????????????????

81
?????????????????????????????

• ????????????????????????????
• ?????? if ???????????????????????????????????
  ??????
• ??????????????????????????????????????????????????
  ?????????? if ????? ??????
• ?????????????????????????? ??????????????????? if
  ??????????????? ???????????????

82
Design Patterns

• ??? ?????????????????????????????????????????????
  ??????????????? (Wikipedia)
• ??????????????????????? ??????????????????????????
  ?????????????????????????????????????????????
• ??????????? pattern ???????????? Java ???? SA
  ????????

83
The Gang of Four

• ??????????????????????? Design Patterns
• ???????????????????????? ???????????????????

84
???????????????????????????????????

• ?????????? ?????????? ???????????????
• ??????????????????????????????? design pattern
  ????
• ???????? State design pattern

85
State Design Pattern

• ?????????????????????????????????????????????????
  ???????????????????????? ?????????????????????????
  ????????????????????????
• ???????????? ????
• ???????????
• ???????? ???? ???
• ?????????? ???? ??????
• ???? with ????????????????????????

86
The State Design Pattern
87
State Design Pattern

• Context (?????)
• ???????????????????????????
• ????????? instance ??? ConcreteState
  ?????????????????? State ?????? ??????? instance
  ?????????????????????????????????????????????
• State
• ?? interface ?????????????????????????????????????
  ???????????
• ConcreteState
• ??????????????????????????????????????????????????
  ?

88
?????????????????

• Context ? Game
• ???????????????? Microsoft.Xna.Framework.Game
• State ? Screen
• ?????? Game ??????? currentScreen ??????????
  screen ??????????????
• ????????????????? screen ?????????????????????
  currentScreen

89
???? Screen

• ?? method ???????? ??????????? Game
• Initialize
• Update(GameTime gameTime)
• LoadContent
• UnloadContent
• Draw(GameTime gameTime)
• Update(GameTime gameTime)
• Method ???????????????????? abstract method
  ???????????????????????????? Screen ?? subclass
  ???

90
???? Screen

• ?? field ?????????????????????????
• name ??????????????
• game ?????????? instance ??? Game ??? screen
  ?????????????
• ?? property ?????? field ??????????????
• Name
• Game
• ??????? property ?????????? read-only (????? get)

91
???? Screen

• ?? method ???????????????????
• void SwitchedIntoFrom(string sceneName)
• ????????????? screen ??????????????? screen ???
• ?????????? screen ???????? argument
• void Draw(GameTime gameTime, SpriteBatch
  spriteBatch)
• ???????????????????? SpriteBatch ?????????
• ???? abstract method ????????????? override
• ??????????? Draw(GameTime gameTime) ?????????
  SpriteBatch ??? Game ??? screen
  ??????????????????????????

92
???? Game

• ???????????????? Microsoft.Xna.Framework.Game
• ??????????????????????????????????????????????????
  ??
• ???????? Microsoft.Xna.Frame.Game ?????????
• ?? field
• currentScreen ?????????? screen ????????
• screens ???? Dictionary ??? map ???? screen ?????
  screen ????? ?????

93
???? Game

• private Screen currentScreen
• public Screen CurrentScreen
• get return currentScreen
• Dictionaryltstring, Screengt screens

94
???? Game

• ????????? screen ?????? ???????? methodvoid
  AddScreen(Screen screen)
• public void AddScreen(Screen screen)
• screensscreen.Name screen

95
???? Game

• ??????????? screen ???????? methodvoid
  SwitchScreen(string name)
• public void SwitchScreen(string name)
• var newScreen GetScreenByName(name)
• var oldScreen CurrentScreen
• currentScreen newScreen
• if (oldScreen ! null)
• currentScreen.SwitchedIntoFrom(oldS
  creen.Name)
• else
• currentScreen.SwitchedIntoFrom("nul
  l")

96
???? Game

• Screen GetScreenByName(string name)
• ?????????????? screen ??????????????????????
• public Screen GetScreenByName(string name)
• if (screens.ContainsKey(name))
• return screensname
• else
• throw new InvalidOperationExceptio
  n(
• "Screen by name '" name
  "' not found.")

97
???? Game

• override method ??? Xna.Framework.Game???????????
  ??????????????? method ???????????? Screen
• protected override void Initialize()
• foreach (Screen screen in screens.Values)
• screen.Initialize()
• base.Initialize()

98
???? Game

• protected override void LoadContent()
• base.LoadContent()
• spriteBatch new SpriteBatch(Graphics
  Device)
• foreach (Screen screen in
  screens.Values)
• screen.LoadContent()
• protected override void UnloadContent()
• foreach (Screen screen in
  screens.Values)
• screen.UnloadContent()
• base.UnloadContent()

99
???? Game

• protected override void Update(GameTime
  gameTime)
• base.Update(gameTime)
• currentScreen.Update(gameTime)
• protected override void Draw(GameTime
  gameTime)
• base.Draw(gameTime)
• currentScreen.Draw(gameTime)

100
????????? Tetris

• ??? Tetris ?????????????? screen ???? 4 screen
• Title Screen ?????????????
• Play Screen ????????????????????????????????????
  ??
• Full Row Screen ?????????????????????????
  ??????????????????????
• Game Over Screen ??????????? Game Over

101
????????? State Machine

• ????????? ??????
• ???????????? ?????????????????????????????????????
  ? (active)
• ??????????????????????????????????????????
  ????????????????????????????? ????????????
  (??????????????????????)
• ?????????????????????? subclass ??? Screen ?????
  subclass ????????????????????
• ?????????????????????????? ????????????
  SwitchScreen
• ??????????????????????????????????????????????????
  ?????? transition diagram

102
Transition Diagram ?????? Tetris
Play
???????????????
????????
??? ????
Full Row
Title
????????
?????? ???
?????
???? title
Game Over
?????