Example: Connect Four

Connect Four uses a 7×6 grid, “gravity” (pieces stack from the bottom), and a win when four in a line share the same player.

Entities

• mainGrid — Grid 7×6.
• playerMarker — Per-player, count Infinity (each drop is a new entity from the bank).

sharedBoard is set to an array with one matcher: name mainGrid.

Move

PlaceNew: entity is the current player’s playerMarker; destination is a Space, Not Contains (empty), and the space below (relativeCoordinates [0, 1]) must Not Contain (so the column is filled from the bottom). playerChoice: true on destination so the player picks the column.

End conditions

1. Some space in the grid has an InLine of 4 with ContainsSame player → winner is taken from the condition contextPath into the first result’s entities’ player.
2. Every space in the grid Contains (board full) → draw.

Full definition: server/examples/connect-four.json.