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PAC-MAN

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by

Alexander Lagrange

on 30 September 2012

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Transcript of PAC-MAN

Introduction to
PAC-MAN

General movement
Individual movement
Common movement
Conclusion
- Imaginative Ghost personalities allow for ghost-specific strategies
is important too
is important
- Three ghost modes
(chase, scatter, retreat)
- Clyde only dangerous in the lower left corner
first
Converts into "Elroy" after certain blabla
Converts into "Elroy" after certain blabla
Converts into "Elroy" after certain blabla
Movement modes
Arcade game produced by NAMCO in 1980
broke the war/shoot theme of arcade games (most popular: Asteroids, Space invaders)
Object of the game:

Maximize score by collecting pellets + various bonus items
255 levels + "kill screen"
MAX score: 3.333.360 points
Enemies: Ghosts!
(kill by touching)
Movement modes
Pinky
Clyde

Chase
Scatter
Pac-man
based
target tile
ghost-specific ("personalities")
level dependent
mode oscillations
No
target tile
pseudorandom mazemovements
(PAC eats an energizer)
Blinky
Target tile overlaps with Pac-man's position
Commonly perceived as the most threatening ghost
jap.: oikake
("chaser")
bad translation, jap. name more accurate ("ambusher")
Targeting scheme makes him easy to control (e.g. short direction change)
Inky
“a fickle, moody, or uneven temper”
Target tile depends on:
- Pac-man's position
- Pac-man's orientation
- Blinky's
position
Least predictable ghost
"pretending ignorance"
Targeting scheme depends on Clyde's vicinity to Pac-man
more than 8 tiles distance: target tile = Pac-man
less than 8 tiles distance: target tile = lower left corner
Can get dangerous in the lower left corner!
Conclusion
1st step
Finished
2nd step
Spark
Last step
Motivation
Moving algorithm: "Target tile"
How
are target tiles determined ?

Motivation
Enemies !
Fixed target tile (not accessible)
corner trajectories
Pac-man's
orientation
determines target tile (four squares in front)
Target tiles are determined in three different modes (chase, scatter, retreat)
Four largely different ghost personalities (badly translated)
Blinky always directly targets Pac-Man
Pinky tries to ambush; targeting can be used against him
Inky is hard to forecast
Clyde is harmless if not met in the lower left corner
Thank you for your attention!
Retreat
Full transcript