globals [
  clock             
  game-started?     
  game-over?        
]

breed [ grass-squares grass-square ]    ;;these are the green untouched spaces
breed [ mines mine ]             ;; these are the invisible mines 
breed [ markers marker ]          ;; show where the player thinks mines are

to setup
  clear-all
  set clock 0
  set game-started? false
  set game-over? false
  set-default-shape grass-squares "green patch"
  set-default-shape mines "meat"
  set-default-shape markers "meat"
  ask patches [
    sprout-grass-squares 1 [ set color green ]
    set pcolor gray
  ]
  ;; make the number of mines by the mine slider thingy.
  ask n-of mine-count patches [
    sprout-mines 1 [
      set color black
      hide-turtle
    ]
  ]
end

to go
  if game-over? [
    ask markers with [any? mines-here] [die ]
    ask markers [ set color gray  - 2 ]
    ask mines [ show-turtle ]
    set game-over? true
    ask grass-squares [set shape "dead"]
    ask patches [ set pcolor green - 3] 
    user-message 
    "Oh no! You ate meat! The planet is only going down hill from now."
    
    stop
  ]
  if not game-started? [
    reset-timer
    set game-started? true
  ]
  set clock timer
  if all? grass-squares [any? mines-here] [
    ask mines [set size 2 show-turtle ]
    ask patches [ set pcolor blue ]
    stop
  ]
  if mouse-down? [
    ask patch (round mouse-xcor) (round mouse-ycor) [
      ifelse any? mines-here
        [ set game-over? true ]  
        [ clear ]                 
    ]
  ]
  tick
end

to clear  ;; patch procedure
  ask grass-squares-here [ die ]
  ask markers-here [ die ]
  let total count neighbors with [any? mines-here]
  ifelse total > 0
    [ set plabel total ]
    [ ask neighbors with [any? grass-squares-here]
      [ clear ] ]
end

to mark/unmark
  if not mouse-inside? [ stop ]
  ask patch round mouse-xcor round mouse-ycor [
    if any? grass-squares-here [
      ifelse any? markers-here
        [ ask markers-here [ die ] ]
        [ sprout-markers 1 [ set color black ] ]
    ]
  ]
end
@#$#@#$#@
GRAPHICS-WINDOW
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CC-WINDOW
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585
731
680
Command Center
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SLIDER
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mine-count
mine-count
1
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25
1
1
NIL
HORIZONTAL

BUTTON
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NIL
setup
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1
T
OBSERVER
NIL
NIL
NIL
NIL

BUTTON
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17
358
50
NIL
go
T
1
T
OBSERVER
NIL
NIL
NIL
NIL

MONITOR
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583
55
NIL
clock
1
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BUTTON
372
17
489
50
NIL
mark/unmark
NIL
1
T
OBSERVER
NIL
M
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NIL

MONITOR
593
10
698
55
mines marked
count markers
0
1
11

@#$#@#$#@
WHAT IS IT?
-----------
This is game of strategy.  There are land mines hidden beneath the green landscape.  Your job is to locate all of the mines without exploding any of them.


HOW IT WORKS
------------
If you click on a patch of grass without a mine, a number appears. The number tells you how many adjacent mines there are.

If you click on a mine, the mine explodes, and you lose the game.

You win the game by uncovering every square that doesn't have a mine.

If you lose, the land turns red.  If you win, it turns blue.


HOW TO USE IT
-------------
Press SETUP to set up the board, then press GO to play the game.

While GO is pressed, click on green squares to check them for mines.

To help you remember where where you think the mines are, you can mark a square by pointing at it and pressing the M key.  (Note the M in the corner of the MARK/UNMARK button.  If the M is grayed out, hide the command center.)

You can make the game easier or harder by adjusting the MINE-COUNT slider before pressing SETUP.


THINGS TO NOTICE
----------------
Use the numbers to deduce where it is safe to click and where it isn't.

Can you always know where it is safe to click, or do you have to guess sometimes?

Note that when you click in an empty region, the model saves you time by automatically clearing all the surrounding empty cells for you.  This keeps the game from being tedious.


THINGS TO TRY
-------------
Try to win the game as fast as possible.  Your time appears in the CLOCK monitor.

Try playing with a bigger or smaller board by editing the view and adjusting min-p(x/y)cor and max-p(x/y)cor.


EXTENDING THE MODEL
-------------------
Write out a file to disk containing the best times players have achieved so far for a given board size.  Update the file when someone beats a previous time.

Write a computer player that can play the game automatically.  What strategy should it use?

Modify the game to use a hexagonal grid instead of a square one.  (See Hex Cells Example, in Code Examples, to see how to make a hexagonal grid.)


NETLOGO FEATURES
----------------
The NEIGHBORS primitive is used to find neighboring squares.


RELATED MODELS
--------------
Some of the models in Cellular Automata section, under Computer Science, also have rules based on how many neighboring cells are occupied.


CREDITS AND REFERENCES
----------------------
According to http://en.wikipedia.org/wiki/Minesweeper_%28computer_game%29 , Minesweeper was invented by Robert Donner in 1989.  A version of the game is included with the Windows operating system.

Landmines are a real problem that kills people every day. To learn more about the campaign to ban landmines, see http://www.icbl.org .

To refer to this model in academic publications, please use:  Wilensky, U. (2005).  NetLogo Minesweeper model.  http://ccl.northwestern.edu/netlogo/models/Minesweeper.  Center for Connected Learning and Computer-Based Modeling, Northwestern University, Evanston, IL.

In other publications, please use:  Copyright 2005 Uri Wilensky.  All rights reserved.  See http://ccl.northwestern.edu/netlogo/models/Minesweeper for terms of use.
@#$#@#$#@
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@#$#@#$#@
NetLogo 4.0.3
@#$#@#$#@
setup
ask patch -5 0 [ clear ]
ask patch -9 -1 [ sprout-markers 1 [ set color black ] ]
ask patch -6 3 [ sprout-markers 1 [ set color black ] ]
ask patch -7 3 [ sprout-markers 1 [ set color black ] ]
ask patch -6 4 [ sprout-markers 1 [ set color black ] ]
ask patch -5 -3 [ sprout-markers 1 [ set color black ] ]
ask patch -6 -3 [ sprout-markers 1 [ set color black ] ]
ask patch -4 -3 [ sprout-markers 1 [ set color black ] ]
@#$#@#$#@
@#$#@#$#@
@#$#@#$#@
@#$#@#$#@
default
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@#$#@#$#@