lobo/lobo.nlogo

;; lobo: Logo Bolo
;; (c) Ben Kurtovic, 2011-2012
;;
;; Logo Bolo is a re-envisioning of the classic tank game by Stuart Cheshire in NetLogo.
;;

__includes [
  "ai.nls"
  "base.nls"
  "bullet.nls"
  "explosion.nls"
  "pillbox.nls"
  "player.nls"
  "tank.nls"
]

extensions [
  sound
  table
]

globals [
  last-sound-time
  last-tick-time
  max-fps
  mouse-was-down?
  sound-stopped?
  stop-game
  sounds
]

patches-own [
  ground-type
  ground-friction
]

;; ===========================
;; Button-initiated procedures
;; ===========================

to setup
  clear-all
  no-display
  setup-defaults
  make-sounds-table
  make-explosions-table
  load-map
  ask patch -3 0 [
    spawn-player 270
  ]
  ask patch 2 0 [
    spawn-tank 1 90
  ]
  show-hud
  render
end

to go
  set stop-game false
  do-player-logic
  ask tanks [
    do-tank-logic
  ]
  ask pillboxes [
    do-pill-logic
  ]
  ask bases [
    do-base-logic
  ]
  ask bullets [
    do-bullet-logic
  ]
  ask explosions [
    keep-exploding
  ]
  if stop-game != false [
    clear-drawing
    clear-turtles
    clear-patches
    ask patch 0 2 [
      set plabel first stop-game
    ]
    ask patch 0 0 [
      set plabel last stop-game
    ]
    render
    stop
  ]
  show-crosshairs
  show-hud
  stop-old-sounds
  render
  keep-time
end

;; ================
;; Other procedures
;; ================

to startup
  setup
end

to debug [agent action msg]
  ; Comment this to turn off debugging info:
  print (word (round timer) ": " agent ": " action " (" msg ")")
end

to setup-defaults
  set-patch-size 20
  resize-world -17 17 -12 12
  set last-sound-time timer
  set last-tick-time timer
  set map-file "lobo-default-map.png"
  set max-fps 30
  set mouse-was-down? false
  set sound-stopped? true
  set stop-game false
  set player-deaths 0
  set player-has-target? false
  set player-kills 0
  set player-target-xcor 0
  set player-target-ycor 0
end

to make-sounds-table
  set sounds table:make
  table:put sounds "fire"   "Hand Clap"
  table:put sounds "kill"   "Electric Snare"
  table:put sounds "noammo" "Cowbell"
  table:put sounds "pickup" "Hi Bongo"
  table:put sounds "shot"   "Acoustic Snare"
  table:put sounds "place"  "Vibraslap"
  table:put sounds "nopill" "Cowbell"
  table:put sounds "spawn"  "Open Hi Conga"
end

to load-map
  import-pcolors-rgb map-file
  ask patches [
    ifelse pcolor = [0 0 0] [
      set pcolor black
      set ground-type "road"
      set ground-friction 1.15
    ] [
      ifelse pcolor = [0 128 0] [
        set pcolor lime - 4
        set ground-type "forest"
        set ground-friction 0.5
      ] [
        ifelse pcolor = [0 255 0] [
          set pcolor lime - 2
          set ground-type "grass"
          set ground-friction 0.75
        ] [
          ifelse pcolor = [255 255 0] [
            set pcolor black
            set ground-type "road"
            set ground-friction 1.15
            spawn-base
          ] [
            ifelse pcolor = [255 0 0] [
              set pcolor lime - 4
              set ground-type "forest"
              set ground-friction 0.5
              spawn-pillbox
            ] [
              debug (word "(" pxcor ", " pycor ")") "PATCH-LOAD-FAILURE" (word "unknown color: " pcolor)
              set pcolor red
            ]
          ]
        ]
      ]
    ]
  ]
end

to show-crosshairs
  clear-drawing
  if mouse-inside? [
    ask patch mouse-xcor mouse-ycor [
      draw-border white 1
    ]
  ]
  if player-has-target? [
    ask patch player-target-xcor player-target-ycor [
      draw-border white 2
    ]
  ]
end

to draw-border [b-color b-thickness]
  sprout 1 [
    set color b-color
    set pen-size b-thickness
    set heading 0
    fd 0.5
    pd
    rt 90
    fd 0.5
    repeat 3 [
      rt 90
      fd 1
    ]
    rt 90
    fd 0.5
    die
  ]
end

to show-hud
  let player-armor 0
  let player-ammo 0
  let num-pills 0

  if player != nobody [
    set player-armor [armor] of player
    set player-ammo [ammunition] of player
    set num-pills [number-of-pills] of player
  ]

  ask patch (min-pxcor + 4) max-pycor [
    set plabel (word "Armor: " player-armor)
  ]
  ask patch (min-pxcor + 12) max-pycor [
    set plabel (word "Ammo: " player-ammo)
  ]
  ask patch (max-pxcor - 1) max-pycor [
    set plabel (word "Pillboxes: " num-pills)
  ]
  ask patch (max-pxcor - 1) (min-pycor + 2) [
    set plabel (word "Deaths: " player-deaths)
  ]
  ask patch (max-pxcor - 1) (min-pycor + 1) [
    set plabel (word "Kills: " player-kills)
  ]
end

to render
  display
  no-display
end

to keep-time
  let time-since-last-tick timer - last-tick-time
  let wait-time (1 / max-fps) - time-since-last-tick
  wait wait-time
  tick
  set last-tick-time timer
end

to stop-old-sounds
  ; NetLogo sometimes plays sounds for longer than we want
  ; i.e., it doesn't know how to properly stop long sounds:
  let time-since-last-sound timer - last-sound-time
  if time-since-last-sound > 2 and not sound-stopped? [
    debug -1 "SOUND-STOP" (word round time-since-last-sound " seconds since last")
    sound:stop-music
    set sound-stopped? true
  ]
end

to play-sound [name]
  if enable-sound? [
    let dist 0
    if player != nobody [
      set dist distancexy ([xcor] of player) ([ycor] of player)
    ]
    let volume 100 - (dist * 4)
    if volume > 0 [
      sound:play-drum (table:get sounds name) volume
      set last-sound-time timer
      set sound-stopped? false
    ]
  ]
end
@#$#@#$#@
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New Game
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Fire!
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LoBo: Logo Bolo
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a game by Ben Kurtovic
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---------------------------------
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---------------------------------
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---------------------------------
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Current AI Routine
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@#$#@#$#@
LOBO
----

Lobo is Logo Bolo: a re-envisioning of the classic tank game by Stuart Cheshire in NetLogo. Below you will find a short tutorial on how to play, some known bugs and limitations, and credits.

TUTORIAL
--------

In Lobo, you control a tank and attempt to gain strategic control of the map by posessing all of the refueling bases, while simultaneously using your bullets and automated "pillboxes" as defensive or offensive weapons.

You move your tank, which is black, by clicking anywhere on the playing field Ð you'll drive to that square and stop once you've reached it. If you change your mind and want to stop immediately, double-click anywhere on the map or press "C" (cancel order). The color of the tile represents the type of ground, which determines how fast you drive over it. You drive the fastest on road, which is black; light green grass gives you a medium speed; dark green forest makes you move slowest.

When you start, you'll have a bit of ammunition and full armor. Fire your gun straight by pressing "F", lowering your ammo count by one. Getting shot by another tank or a pillbox will lower your armor count by one, and if that reaches zero, you'll die and respawn randomly. (Both of these counts are displayed on the top-left of the screen.)

The map contains a few bases, which look like yellow squares. At the start of the game, they are gray (neutral) and any tank can claim one by driving over it. If you own a particular base, stopping over it will refuel your tank with ammo and armor. An base you don't own won't refuel you, but you can repeatedly shoot at it to weaken it, then drive over it to "capture" it.

The map also contains a few pillboxes, or "pills", which look like gray circles with colored rectanges sticking out of them. Pills will automatically shoot at their nearest target within range, and they have infinite ammo, but not infinite armor. Destroy an enemy pill (red) and pick it up by driving over it, then place it below you, anywhere on the map, with "P". It'll be green, and will shoot at your enemies instead of you!

You win the game by controlling all refueling bases on the map and then destroying your rival tanks Ð tanks that don't control any bases don't respawn!

ADVANCED TIPS
-------------
* Refueling bases have limited reserves of armor and ammo, which regenerate slowly over time. In particular, shooting at a base lowers its armor reserves, and it is "destroyed" when its armor count reaches zero. Therefore, trying to refuel yourself on a recently captured base might not help that much!

* At the start of the game, try your hardest to ignore the enemy tanks and pills and go straight for bases Ð controlling bases is the most important strategic element, after all.

* To protect your bases from enemy attack, try placing pillboxes directly adjacent to them.

* Pillboxes have "anger" Ð they'll shoot faster if you shoot at them, but they'll calm down over time. In other words, it might not be the best idea to take down an entire pillbox in one go, but hurt it and then come back later.

* Consider shooting your own pillboxes if an enemy is nearby Ð you'll "anger" it, and it will shoot at your opponent faster! Also, don't hesitate to destroy your own pills completely and re-place them in a better location, or even in the same location with full health if they were damaged beforehand.

BUGS / LIMITATIONS
------------------

In the original Bolo, the map takes up many screen widths and is scrollable with the tank at the center. "follow" by itself wouldn't work, because NetLogo does not allow objects off-screen. I spent a while trying to figure this out, at one point essentially rewriting the rendering engine and using a table of "actual" patch coordinates that was translated into "virtual" patch coordinates each frame Ð not only was this very slow, but it was very overcomplicated and I wasn't able to do everything I had wanted. Instead, the map was made one screen size.

In the original Bolo, patches are not merely colors - they have patterns on them (grass has little green lines, forests are spotted, roads have white stripes). This was not possible in NetLogo because patches can only have a single color.

Time was also a limiting factor: I had planned a lot of additional features found in the original Bolo, like a nicer GUI for showing armor and ammunition, water as a ground-type (which drowns your tank), allies and multiple enemies (grr!), a nicer game-over screen, and a much, much smarter AI. These were skipped so more work could be spent on general polishing and testing.

CREDITS / MISC
--------------

* Stuart Cheshire for the original Bolo game. Some graphics used in this project (tanks, pillboxes, and bases) were heavily based on old sprites taken from Bolo.

* My dad for introducing me to Bolo many years ago, and for helping me simplify the original Bolo game into something possible with NetLogo.

* Josh Hofing for advice on implementing certain features and positive encouragement.

* Chain Algorithm - I wrote the entire AI routine in less than an hour immediately before the project was due (ha!), and I don't think it would be possible if I hadn't been listening to your music on loop the entire time. Really gets your blood pumping, y'know? Yeah.

This project is available on GitHub at https://github.com/earwig/lobo. I used it for syncing code between my netbook and my desktop when working on the project away from home.

Ñ Ben Kurtovic
@#$#@#$#@
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