nx_tictactoe.nx

nx_tictactoe.nx -- bits-up source-of-truth for C0 of the bootstrap-to-generative trajectory (NISHI_GAME_ENGINE_HONESTY_AND_MISSIONS_ROADMAP.md §19.1 stage C0). The smallest joy-bearing game on the ladder. Validates the five honesty gates (G1 smokes + G2 ≥60s real playtest + G3 benchmark + G4 bits-budget + G5 joy) at minimum complexity before scaling to checkers/chess/voxels/minecraftclone. PURE NishiLang. No third-party in the build path. No TypeScript scaffold. Browser delivery (if needed for G2 family playtest) generated from this source via nxc2 codegen on the last step IF the family needs to playtest in a browser tab. Per [[feedback-no-third-party-in-build-path-source-of-truth-is-bits-up]]. State layout: a heap block of 12 i64 cells holds one game state. Pure data, no globals, no GC required — all allocations happen at game start; minimax mutates and undoes in place to avoid recursive allocation. [0..8] 9 board cells: NX_TTT_EMPTY=0, NX_TTT_X=1, NX_TTT_O=2 [9] whose turn: NX_TTT_X or NX_TTT_O [10] outcome kind: NX_TTT_ONGOING=0, NX_TTT_WIN=1, NX_TTT_DRAW=2 [11] winning side: NX_TTT_X, NX_TTT_O, or 0 if no win yet genealogy_id: nx_tictactoe_v1_2026_05_19 lineage_id: abstract_classic_game_state_machine license: operator-as-sole-author (escalated to §23.1 of roadmap) complexity: O(1) per move; O(8.6) for perfect minimax (tic-tac-toe game tree)