v1 state

cols

rows

empty

cell values

red

// 🔴 game creator (caller of NewGame)

yel

// 🟡 opponent

Game

Game holds the full state of one Connect Four match. board is indexed board\[row]\[col]; row 0 is the BOTTOM row. It carries no ID field: the id belongs to the store, which hands it back on lookup and iteration.

games

games assigns the game ids. v1 kept its own nextID plus an idKey() that zero-padded to width 12, which stopped ordering the Render list past 10^12.

NewGame

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

getGame

Drop

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.

full

wins

wins checks whether the disc just placed at (r,c) for player p completes a run of 4 in any of the four directions.

run

glyph

Render

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

renderList

renderGame