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v0 source realm

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Connect Four

⚠️ Experimental — generated with no human supervision. This realm was produced automatically by an MCP-driven agent to exercise the gno MCP server and tooling, and to generate test content for gno compilers, linters and formatters. Not audited. Not for production. Full context & folder README: r/moul/x/daily

A two-player Connect Four realm on a 7-wide × 6-tall board. The game creator plays 🔴 and moves first; the named opponent plays 🟡. Drop enforces turn order by caller, rejects full and out-of-range columns, and detects a horizontal, vertical, or diagonal 4-in-a-row (or a draw). Render draws the board with 🔴🟡· and shows whose turn it is or who won.

Realm path: gno.land/r/REPLACE_ADDR/connect4

Example calls

# create a game against another address (you are 🔴, returns the game id)
NewGame(g1zabc...opponent)   # -> 1

# drop discs into columns 0-6 (turns alternate, enforced by caller)
Drop(1, 3)   # 🔴 drops in column 3
Drop(1, 3)   # 🟡 drops in column 3 (called from opponent's key)

# view state
render:            # lists all games
render:1           # shows board for game 1

Part of moul/gno-contracts — moul's versioned gno.land contracts. See the repository for the full catalog, build/test tooling, and usage.

Dependency graph:

gno.land/r/moul/x/daily/connect4/v0 dependency graph

🧪 Highly experimental — potentially vibe-coded. Not audited; may break, change, or be removed at any time. Do not use with anything of value. Full disclaimer: DISCLAIMER.

Functions 3

func Drop

crossing Action 
1func Drop(cur realm, gameID int64, column int)
source

Drop places the caller's disc into the given column (0-6). Enforces turn order by caller, rejects full columns, and detects a 4-in-a-row win or a draw.

func NewGame

crossing Action 
1func NewGame(cur realm, opponent address) int64
source

NewGame creates a match between the caller (🔴) and opponent (🟡). Returns the new game id.

func Render 

1func Render(path string) string
source

Render draws the board with 🔴🟡· and shows whose turn / the winner. path "" lists all games; path "<id>" shows a single board.

Types 1

type Game

struct 
 1type Game struct {
 2	ID       int64
 3	Red      address // 🔴 creator, moves first
 4	Yellow   address // 🟡 opponent
 5	Board    [rows][cols]int
 6	Turn     int  // whose turn: red or yel
 7	Winner   int  // empty until decided; red/yel = winner
 8	Draw     bool // true when board full with no winner
 9	Finished bool
10}
source

Game holds the full state of one Connect Four match. board is indexed board[row][col]; row 0 is the BOTTOM row.

Imports 6

Source Files 3