Added algorithm and some more text for 2.1
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Jonatan Pålsson
parent
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1 changed files with 487 additions and 22 deletions
505
report.lyx
505
report.lyx
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@ -1078,6 +1078,15 @@ key "armstrong2011"
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in the computer software world, in order to understand complex problems
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more easily.
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While there may not always be a real world example of a system performing
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th exact duties of the system being modelled in the computer, it is often
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easier to create and analyze requirements for real world systems and processes
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than systems existing soley in a computer.
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The requirements and limitations imposed on the real-world system can,
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using the proper tools, be transferred in to the software.
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\end_layout
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\begin_layout Standard
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The real world system chosen for the GGS is a
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\begin_inset Quotes eld
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\end_inset
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@ -1093,18 +1102,17 @@ Chess club
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software setting.
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\end_layout
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\begin_layout Standard
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Some requirements, limitations and additions were made to the chess club
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system, so that the system would more easily and efficiently be replicated
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in a software setting.
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\end_layout
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\begin_layout Standard
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In the text below, two examples will be presented.
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On example is that of a real-world
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\begin_inset Quotes eld
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\end_inset
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Chess club
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\begin_inset Quotes erd
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\end_inset
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, in which players meet to play chess against each other, the other example
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is the GGS, and how it corresponds to this chess club.
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On example is that of a real-world chess club, in which players meet to
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play chess against each other, the other example is the GGS, and how it
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corresponds to this chess club.
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In figure
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\begin_inset CommandInset ref
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LatexCommand vref
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@ -1112,15 +1120,7 @@ reference "fig:theory-layout"
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\end_inset
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a graphical representation for the
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\begin_inset Quotes eld
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\end_inset
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Chess club
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\begin_inset Quotes erd
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\end_inset
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is presented.
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a graphical representation for the chess club is presented.
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The club is seen from above.
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The outermost box represents the building.
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In the GGS setting, the building would represent one instance of GGS.
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@ -1164,6 +1164,471 @@ Coordinator
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monitored and book keeping can be performed by this entity.
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\end_layout
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\begin_layout Standard
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Moves by players are made using the tables present in the chess club.
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Every game is isolated to a table, just as expected.
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This means that communication during a game only has to pass by the players
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of that particular game, and the coordinator, making sure that no cheating
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takes place.
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\end_layout
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\begin_layout Standard
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This isolation of the games plays an imporant part in many properties of
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the GGS, the isolation means that games can for example be transferred
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between different chess clubs, furthermore, if cheating takes place, corruption
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can only occur in the particular table where it was found, and can not
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spread.
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\end_layout
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\begin_layout Standard
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Moving chess players from one location to another is one of the alterations
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made to the real world chess club system to make the system more appropriate
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for a software setting.
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Allowing games to be transferred is not a property usually desired in a
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real world chess club, where transferring players would mean moving the
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players from one building to another.
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In the software setting, moving players means moving the game processes
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from one system to another, perhaps to balance the system load.
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This transfer of players can occur transparently, without notifying the
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players.
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\end_layout
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\begin_layout Standard
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The simplified life cycle of a game in GGS can be viewed using algorithm
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\begin_inset CommandInset ref
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LatexCommand vref
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reference "alg:game-lifecycle"
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\end_inset
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.
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In order to make this life cycle as efficient and useful as possible, the
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scalability, fault tolerant and generic traits are added to the GGS.
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These are not shown in the algorithm, as these traits are tools in making
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the algorithm behave as efficient as possible, and are not the main focus
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when studying the life cycle of a game.
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\end_layout
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\begin_layout Standard
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The limits imposed in
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\begin_inset CommandInset ref
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LatexCommand vref
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reference "alg:game-lifecycle"
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\end_inset
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are arbitrary for this example, there are no limits in the GGS on the number
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of players connecting, for example.
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\end_layout
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\begin_layout Standard
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\begin_inset Float algorithm
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wide false
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sideways false
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status collapsed
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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begin{algorithmic}[1]
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\end_layout
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\end_inset
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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newcommand{
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\backslash
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INDSTATE}[1][1]{
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\backslash
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STATE
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\backslash
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hspace{#1
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\backslash
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algorithmicindent}}
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\end_layout
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\end_inset
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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STATE
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\end_layout
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\end_inset
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\series bold
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while
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\series default
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\begin_inset Formula $players<2$
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\end_inset
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:
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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INDSTATE
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\end_layout
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\end_inset
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\series bold
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if
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\series default
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a player connects, call
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\emph on
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connected
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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STATE
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\end_layout
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\end_inset
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\series bold
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while
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\series default
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the game commences:
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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INDSTATE
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\end_layout
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\end_inset
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call the function
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\emph on
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game
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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STATE
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\end_layout
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\end_inset
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\series bold
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when
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\series default
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the game has stopped
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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INDSTATE
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\end_layout
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\end_inset
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call the function
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\emph on
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endGame
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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STATE
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\end_layout
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\end_inset
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\series bold
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function
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\series default
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connected:
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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INDSTATE
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\end_layout
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\end_inset
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assign the new player an id
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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INDSTATE
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\end_layout
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\end_inset
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alert the coordinator of the new player
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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INDSTATE
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\end_layout
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\end_inset
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\series bold
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if
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\series default
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a free table does not exist:
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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INDSTATE[2]
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\end_layout
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\end_inset
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the coordinator creates a new table
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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INDSTATE
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\end_layout
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\end_inset
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the coordinator places the player by the table, and begins watching the
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player
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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STATE
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\end_layout
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\end_inset
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\series bold
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function
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\series default
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game
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\series bold
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:
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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INDSTATE
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\end_layout
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\end_inset
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perform game-specific functions.
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In chess, the rules of chess are placed here
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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STATE
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\end_layout
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\end_inset
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\series bold
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function
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\series default
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endGame:
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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INDSTATE
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\end_layout
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\end_inset
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alert the coordinator, de-registering the players
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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INDSTATE
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\end_layout
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\end_inset
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disconnect the players from the system, freeing system resources
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\end_layout
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\begin_layout Plain Layout
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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end{algorithmic}
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\end_layout
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\end_inset
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\end_layout
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\begin_layout Plain Layout
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\begin_inset Caption
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\begin_layout Plain Layout
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\begin_inset CommandInset label
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LatexCommand label
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name "alg:game-lifecycle"
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\end_inset
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A very simple example of the flow through the GGS system when a game played.
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\end_layout
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\end_inset
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\end_layout
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\end_inset
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\end_layout
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\begin_layout Standard
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\end_layout
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\begin_layout Standard
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\begin_inset Float figure
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wide false
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@ -1782,7 +2247,7 @@ UUID
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\begin_inset Float algorithm
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wide false
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sideways false
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status collapsed
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status open
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\begin_layout Plain Layout
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\begin_inset ERT
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