PONG

1
PONG

• EE362 Summer 04
• Mini-project
• Team WWJD

2
Team WWJD

• Members
• Xavier (team leader)
• Jonathan (software leader)
• Virgil (hardware leader)
• Justin (documentation leader)

3
Game Flow

• On reset, display intro screen for 5 seconds
• Display GUI until user input
• Name entry
• Game start
• Score board
• Game end
• High score display
• Intro screen

4
Hardware implemented

• CrystalFontz CFAG240128D-FMI-T LCD
• 2 Grayhill 62S11-M5-PH Encoder / Rotary Pulse
  Generator w/ pushbutton
• 2 knobs
• Motorola M68HC12 microcontroller

5
GUI

• The user interfacing part will (hopefully)
  consist of the game title, some graphics and the
  mode selections

6
Name entry

• Prompt player(s) to enter name (for score board
  and high score list)
• Limited to 3 characters
• Select by scrolling through alphabets using
  Encoder

7
2 player mode

• Boundaries, top and bottom
• Each boundary 1 pixel from edge
• Limitation to ball and slider movements
• Closed

8
2 player mode

• Sliders
• Sliders can travel along one vertical line
• Size 5x25 pixels
• Path at 14 pixels from left and right edges (not
  boundaries)
• Path terminates 12 pixels from boundaries (top
  and bottom) (12(25(slider width)1(slider
  position))/2)
• Object contains
• Position on path (1 dimension only)

9
2 player mode

• Ball
• Travels inside boundaries
• Size 6x6 pixels
• Bounces as a perfect reflection off any surfaces,
  sliders and boundaries included
• Flies off left and right boundaries (winning
  condition)
• Object contains
• Velocity vector
• Position
• Possibly number of bounces for score keeping (off
  sliders or off boundaries or both)
• Destination position (at slider path) for AI

10
1 player vs CPU mode

• Same environment as 2 player mode
• Simple AI will be implemented
• Calculates path of ball
• Slider will stop at random offset from collision
  point
• Difficulty will be implemented

11
Score board

• Big fonts of player name(s) and corresponding
  score under
• Transition between 2 sets (1 set being 1 ball)

12
High scores

• Hall of Fame
• Displays player name and score
• Can be cleared

13
Phase I

• Interface with LCD to produce pixels, characters
  and eventually graphics (completed July 24th, 14
  hours)
• Program algorithms for sliders, ball, bounce and
  basic scoring (each set win scores 1)
• Interface with Encoder to work with slider
  movements
• Ball limited to 45 degree velocity vectors and
  constant speed

14
Phase II

• Stress test 1 player mode
• Implement CPU mode
• Create AI, calculate ball path and collision
  position
• Generate random offset
• Humanized slider movement (not instantaneous)

15
Phase III

• Implement Score board and name entry
• Interface with Encoders for name entry
• Score board between every set, displays player
  name(s)
• Implement cheats

16
Phase IV

• Improved scoring system
• Implement UI screen and High score
• Use Encoder for game mode select
• High score scrolling?

17
Phase V

• UI graphics
• Intro graphics
• Any modifications to game play graphics

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Phase VI

• Improved ball physics
• Increased velocity vector angles
• Change in angle depends on slider collision
  position

19
Phase VII

• Game Difficulty
• Ball speeds up
• Improved AI (smaller offset or offset at hit
  intervals)
• Improved scoring system
• Higher score accumulation proportional to ball
  speed

20
Phase VIII

• Improved ball physics
• Twitch path if caught in infinite loop
• Visual enhancements in Intro and UI screens
• Flashing boarders
• (suggestions please)

21
Phase IX Final Phase

• Any other modifications to PONG
• Extensively stress test the system
• Documentations
• Presentation preparation