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Connect4

The game

Long version: see Wikipedia

Each turn, you must select a column to drop a piece of your colour in to. The piece will 'fall' vertically until it hits either another piece or the bottom of the board.

If there are now four pieces in a row (vertically, horizontally or diagonally) of your colour, you win. If there is no space in that column for your piece, you lose.

The game will be drawn if there are no positions left to place pieces in to. Play alternates between players until one of them wins, or the game is a draw.

Additional rules

  • The official interpreter is Ruby 1.9.2.
  • The player will not have access to the game objects.
  • The player may require Ruby source files from within a lib directory in the same place as the player file (i.e. players/player.rb can use players/lib/foo/bar.rb via require "foo/bar".)
  • A file should not implement more than one player class.

Implementation

This implementation is based on the ruby implementation for the game Battleships, as found here

Play takes place on a 7x6 grid. Co-ordinates are given in the order (x,y) and are zero-indexed relative to the top left, i.e. (0,0) is the top left, (6,0) is the top right, and (6,5) is the bottom right.

A player is implemented as a Ruby class. The name of the class must be unique and end with Player. It must implement the following instance methods:

name

This must return an ASCII string containing the name of the team or player.

take_turn(state, colour)

state is a representation of the known state of the board, as modified by the player’s moves. It is given as an array of arrays; the inner arrays represent horizontal rows. Each cell may be in one of the following states: :none, :red, :blue, where :red and :blue are the colours of the two players.

colour is the colour that you are playing as, either :red or :blue, for evaluating the board. This will not change between turns, only between games.

take_turn must return a column number to drop a piece into, in the range 0-6.

The console runner

A console runner is provided. It can be started using:

ruby bin/play.rb path/to/player_1.rb path/to/player_2.rb

Players are isolated using DRb.

A couple of very basic players are supplied: StupidPlayer chooses at random. Human Player asks for input via the console.

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
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Connect4

The game

Long version: see Wikipedia

Each turn, you must select a column to drop a piece of your colour in to. The piece will 'fall' vertically until it hits either another piece or the bottom of the board.

If there are now four pieces in a row (vertically, horizontally or diagonally) of your colour, you win. If there is no space in that column for your piece, you lose.

The game will be drawn if there are no positions left to place pieces in to. Play alternates between players until one of them wins, or the game is a draw.

Additional rules

  • The official interpreter is Ruby 1.9.2.
  • The player will not have access to the game objects.
  • The player may require Ruby source files from within a lib directory in the same place as the player file (i.e. players/player.rb can use players/lib/foo/bar.rb via require "foo/bar".)
  • A file should not implement more than one player class.

Implementation

This implementation is based on the ruby implementation for the game Battleships, as found here

Play takes place on a 7x6 grid. Co-ordinates are given in the order (x,y) and are zero-indexed relative to the top left, i.e. (0,0) is the top left, (6,0) is the top right, and (6,5) is the bottom right.

A player is implemented as a Ruby class. The name of the class must be unique and end with Player. It must implement the following instance methods:

name

This must return an ASCII string containing the name of the team or player.

take_turn(state, colour)

state is a representation of the known state of the board, as modified by the player’s moves. It is given as an array of arrays; the inner arrays represent horizontal rows. Each cell may be in one of the following states: :none, :red, :blue, where :red and :blue are the colours of the two players.

colour is the colour that you are playing as, either :red or :blue, for evaluating the board. This will not change between turns, only between games.

take_turn must return a column number to drop a piece into, in the range 0-6.

The console runner

A console runner is provided. It can be started using:

ruby bin/play.rb path/to/player_1.rb path/to/player_2.rb

Players are isolated using DRb.

A couple of very basic players are supplied: StupidPlayer chooses at random. Human Player asks for input via the console.

About

Connect4 implementation for writing AI players

Resources

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0 stars

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1 watching

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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Connect4

The game

Long version: see Wikipedia

Each turn, you must select a column to drop a piece of your colour in to. The piece will 'fall' vertically until it hits either another piece or the bottom of the board.

If there are now four pieces in a row (vertically, horizontally or diagonally) of your colour, you win. If there is no space in that column for your piece, you lose.

The game will be drawn if there are no positions left to place pieces in to. Play alternates between players until one of them wins, or the game is a draw.

Additional rules

  • The official interpreter is Ruby 1.9.2.
  • The player will not have access to the game objects.
  • The player may require Ruby source files from within a lib directory in the same place as the player file (i.e. players/player.rb can use players/lib/foo/bar.rb via require "foo/bar".)
  • A file should not implement more than one player class.

Implementation

This implementation is based on the ruby implementation for the game Battleships, as found here

Play takes place on a 7x6 grid. Co-ordinates are given in the order (x,y) and are zero-indexed relative to the top left, i.e. (0,0) is the top left, (6,0) is the top right, and (6,5) is the bottom right.

A player is implemented as a Ruby class. The name of the class must be unique and end with Player. It must implement the following instance methods:

name

This must return an ASCII string containing the name of the team or player.

take_turn(state, colour)

state is a representation of the known state of the board, as modified by the player’s moves. It is given as an array of arrays; the inner arrays represent horizontal rows. Each cell may be in one of the following states: :none, :red, :blue, where :red and :blue are the colours of the two players.

colour is the colour that you are playing as, either :red or :blue, for evaluating the board. This will not change between turns, only between games.

take_turn must return a column number to drop a piece into, in the range 0-6.

The console runner

A console runner is provided. It can be started using:

ruby bin/play.rb path/to/player_1.rb path/to/player_2.rb

Players are isolated using DRb.

A couple of very basic players are supplied: StupidPlayer chooses at random. Human Player asks for input via the console.

About

Connect4 implementation for writing AI players

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1 watching

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

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Connect4

The game

Long version: see Wikipedia

Each turn, you must select a column to drop a piece of your colour in to. The piece will 'fall' vertically until it hits either another piece or the bottom of the board.

If there are now four pieces in a row (vertically, horizontally or diagonally) of your colour, you win. If there is no space in that column for your piece, you lose.

The game will be drawn if there are no positions left to place pieces in to. Play alternates between players until one of them wins, or the game is a draw.

Additional rules

  • The official interpreter is Ruby 1.9.2.
  • The player will not have access to the game objects.
  • The player may require Ruby source files from within a lib directory in the same place as the player file (i.e. players/player.rb can use players/lib/foo/bar.rb via require "foo/bar".)
  • A file should not implement more than one player class.

Implementation

This implementation is based on the ruby implementation for the game Battleships, as found here

Play takes place on a 7x6 grid. Co-ordinates are given in the order (x,y) and are zero-indexed relative to the top left, i.e. (0,0) is the top left, (6,0) is the top right, and (6,5) is the bottom right.

A player is implemented as a Ruby class. The name of the class must be unique and end with Player. It must implement the following instance methods:

name

This must return an ASCII string containing the name of the team or player.

take_turn(state, colour)

state is a representation of the known state of the board, as modified by the player’s moves. It is given as an array of arrays; the inner arrays represent horizontal rows. Each cell may be in one of the following states: :none, :red, :blue, where :red and :blue are the colours of the two players.

colour is the colour that you are playing as, either :red or :blue, for evaluating the board. This will not change between turns, only between games.

take_turn must return a column number to drop a piece into, in the range 0-6.

The console runner

A console runner is provided. It can be started using:

ruby bin/play.rb path/to/player_1.rb path/to/player_2.rb

Players are isolated using DRb.

A couple of very basic players are supplied: StupidPlayer chooses at random. Human Player asks for input via the console.

About

Connect4 implementation for writing AI players

Resources

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0 stars

Watchers

1 watching

Forks

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
Skip to content

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NameName
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Connect4

The game

Long version: see Wikipedia

Each turn, you must select a column to drop a piece of your colour in to. The piece will 'fall' vertically until it hits either another piece or the bottom of the board.

If there are now four pieces in a row (vertically, horizontally or diagonally) of your colour, you win. If there is no space in that column for your piece, you lose.

The game will be drawn if there are no positions left to place pieces in to. Play alternates between players until one of them wins, or the game is a draw.

Additional rules

  • The official interpreter is Ruby 1.9.2.
  • The player will not have access to the game objects.
  • The player may require Ruby source files from within a lib directory in the same place as the player file (i.e. players/player.rb can use players/lib/foo/bar.rb via require "foo/bar".)
  • A file should not implement more than one player class.

Implementation

This implementation is based on the ruby implementation for the game Battleships, as found here

Play takes place on a 7x6 grid. Co-ordinates are given in the order (x,y) and are zero-indexed relative to the top left, i.e. (0,0) is the top left, (6,0) is the top right, and (6,5) is the bottom right.

A player is implemented as a Ruby class. The name of the class must be unique and end with Player. It must implement the following instance methods:

name

This must return an ASCII string containing the name of the team or player.

take_turn(state, colour)

state is a representation of the known state of the board, as modified by the player’s moves. It is given as an array of arrays; the inner arrays represent horizontal rows. Each cell may be in one of the following states: :none, :red, :blue, where :red and :blue are the colours of the two players.

colour is the colour that you are playing as, either :red or :blue, for evaluating the board. This will not change between turns, only between games.

take_turn must return a column number to drop a piece into, in the range 0-6.

The console runner

A console runner is provided. It can be started using:

ruby bin/play.rb path/to/player_1.rb path/to/player_2.rb

Players are isolated using DRb.

A couple of very basic players are supplied: StupidPlayer chooses at random. Human Player asks for input via the console.

About

Connect4 implementation for writing AI players

Resources

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0 stars

Watchers

1 watching

Forks

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

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Connect4

The game

Long version: see Wikipedia

Each turn, you must select a column to drop a piece of your colour in to. The piece will 'fall' vertically until it hits either another piece or the bottom of the board.

If there are now four pieces in a row (vertically, horizontally or diagonally) of your colour, you win. If there is no space in that column for your piece, you lose.

The game will be drawn if there are no positions left to place pieces in to. Play alternates between players until one of them wins, or the game is a draw.

Additional rules

  • The official interpreter is Ruby 1.9.2.
  • The player will not have access to the game objects.
  • The player may require Ruby source files from within a lib directory in the same place as the player file (i.e. players/player.rb can use players/lib/foo/bar.rb via require "foo/bar".)
  • A file should not implement more than one player class.

Implementation

This implementation is based on the ruby implementation for the game Battleships, as found here

Play takes place on a 7x6 grid. Co-ordinates are given in the order (x,y) and are zero-indexed relative to the top left, i.e. (0,0) is the top left, (6,0) is the top right, and (6,5) is the bottom right.

A player is implemented as a Ruby class. The name of the class must be unique and end with Player. It must implement the following instance methods:

name

This must return an ASCII string containing the name of the team or player.

take_turn(state, colour)

state is a representation of the known state of the board, as modified by the player’s moves. It is given as an array of arrays; the inner arrays represent horizontal rows. Each cell may be in one of the following states: :none, :red, :blue, where :red and :blue are the colours of the two players.

colour is the colour that you are playing as, either :red or :blue, for evaluating the board. This will not change between turns, only between games.

take_turn must return a column number to drop a piece into, in the range 0-6.

The console runner

A console runner is provided. It can be started using:

ruby bin/play.rb path/to/player_1.rb path/to/player_2.rb

Players are isolated using DRb.

A couple of very basic players are supplied: StupidPlayer chooses at random. Human Player asks for input via the console.

About

Connect4 implementation for writing AI players

Resources

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0 stars

Watchers

1 watching

Forks

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

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Connect4

The game

Long version: see Wikipedia

Each turn, you must select a column to drop a piece of your colour in to. The piece will 'fall' vertically until it hits either another piece or the bottom of the board.

If there are now four pieces in a row (vertically, horizontally or diagonally) of your colour, you win. If there is no space in that column for your piece, you lose.

The game will be drawn if there are no positions left to place pieces in to. Play alternates between players until one of them wins, or the game is a draw.

Additional rules

  • The official interpreter is Ruby 1.9.2.
  • The player will not have access to the game objects.
  • The player may require Ruby source files from within a lib directory in the same place as the player file (i.e. players/player.rb can use players/lib/foo/bar.rb via require "foo/bar".)
  • A file should not implement more than one player class.

Implementation

This implementation is based on the ruby implementation for the game Battleships, as found here

Play takes place on a 7x6 grid. Co-ordinates are given in the order (x,y) and are zero-indexed relative to the top left, i.e. (0,0) is the top left, (6,0) is the top right, and (6,5) is the bottom right.

A player is implemented as a Ruby class. The name of the class must be unique and end with Player. It must implement the following instance methods:

name

This must return an ASCII string containing the name of the team or player.

take_turn(state, colour)

state is a representation of the known state of the board, as modified by the player’s moves. It is given as an array of arrays; the inner arrays represent horizontal rows. Each cell may be in one of the following states: :none, :red, :blue, where :red and :blue are the colours of the two players.

colour is the colour that you are playing as, either :red or :blue, for evaluating the board. This will not change between turns, only between games.

take_turn must return a column number to drop a piece into, in the range 0-6.

The console runner

A console runner is provided. It can be started using:

ruby bin/play.rb path/to/player_1.rb path/to/player_2.rb

Players are isolated using DRb.

A couple of very basic players are supplied: StupidPlayer chooses at random. Human Player asks for input via the console.

About

Connect4 implementation for writing AI players

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1 watching

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Connect4

The game

Long version: see Wikipedia

Each turn, you must select a column to drop a piece of your colour in to. The piece will 'fall' vertically until it hits either another piece or the bottom of the board.

If there are now four pieces in a row (vertically, horizontally or diagonally) of your colour, you win. If there is no space in that column for your piece, you lose.

The game will be drawn if there are no positions left to place pieces in to. Play alternates between players until one of them wins, or the game is a draw.

Additional rules

  • The official interpreter is Ruby 1.9.2.
  • The player will not have access to the game objects.
  • The player may require Ruby source files from within a lib directory in the same place as the player file (i.e. players/player.rb can use players/lib/foo/bar.rb via require "foo/bar".)
  • A file should not implement more than one player class.

Implementation

This implementation is based on the ruby implementation for the game Battleships, as found here

Play takes place on a 7x6 grid. Co-ordinates are given in the order (x,y) and are zero-indexed relative to the top left, i.e. (0,0) is the top left, (6,0) is the top right, and (6,5) is the bottom right.

A player is implemented as a Ruby class. The name of the class must be unique and end with Player. It must implement the following instance methods:

name

This must return an ASCII string containing the name of the team or player.

take_turn(state, colour)

state is a representation of the known state of the board, as modified by the player’s moves. It is given as an array of arrays; the inner arrays represent horizontal rows. Each cell may be in one of the following states: :none, :red, :blue, where :red and :blue are the colours of the two players.

colour is the colour that you are playing as, either :red or :blue, for evaluating the board. This will not change between turns, only between games.

take_turn must return a column number to drop a piece into, in the range 0-6.

The console runner

A console runner is provided. It can be started using:

ruby bin/play.rb path/to/player_1.rb path/to/player_2.rb

Players are isolated using DRb.

A couple of very basic players are supplied: StupidPlayer chooses at random. Human Player asks for input via the console.

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Connect4 implementation for writing AI players

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