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Added Okimba, Akimbo's variant #442

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Merged
jpneto merged 1 commit into from
Jul 13, 2026
Merged

Added Okimba, Akimbo's variant #442

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7 changes: 7 additions & 0 deletions locales/en/apgames.json
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Original file line number Diff line number Diff line change
Expand Up @@ -441,6 +441,12 @@
},
"size-19": {
"name": "19x19 board"
},
"#ruleset": {
"name": "Akimbo"
},
"okimba": {
"name": "Okimba"
}
},
"akron": {
Expand Down Expand Up @@ -4455,6 +4461,7 @@
},
"akimbo": {
"INSTRUCTIONS": "Select a point to place a piece. Each player may only have one naked diagonal.",
"INSTRUCTIONS_OKIMBA": "Select a point to place a piece. There must be only have one naked diagonal in the entire board.",
"OCCUPIED": "Select an empty cell to place a friendly piece.",
"EXCESS_NAKED_DIAGONALS": "More than one naked diagonal would be created.",
"NO_CROSSINGS": "Lines may not cross."
Expand Down
111 changes: 75 additions & 36 deletions src/games/akimbo.ts
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import { GameBase, IAPGameState, IClickResult, IIndividualState, IValidationResult } from "./_base";
import { GameBase, IAPGameState, IClickResult, IIndividualState, IValidationResult, ICustomButton } from "./_base";
import { APGamesInformation } from "../schemas/gameinfo";
import { APRenderRep, MarkerEdge } from "@abstractplay/renderer/build/schemas/schema";
import { APMoveResult } from "../schemas/moveresults";
Expand Down Expand Up @@ -59,9 +59,10 @@ export class AkimboGame extends GameBase {
{ uid: "#board", }, // 15x15
{ uid: "size-17", group: "board" },
{ uid: "size-19", group: "board" },
{ uid: "okimba", group: "ruleset" },
],
categories: ["goal>connect", "mechanic>place", "board>shape>rect", "board>connect>rect", "components>simple>1per"],
flags: ["no-moves", "pie"]
flags: ["no-moves", "pie", "custom-buttons"]
};

public numplayers = 2;
Expand All @@ -77,6 +78,7 @@ export class AkimboGame extends GameBase {
public nakedDiagonalP2: string[] = [];
private boardSize = 0;
private lines: [PlayerLines, PlayerLines];
private ruleset: "default" | "okimba";

constructor(state?: IAkimboState | string, variants?: string[]) {
super();
Expand Down Expand Up @@ -110,6 +112,7 @@ export class AkimboGame extends GameBase {
}
this.load();
this.lines = this.getLines();
this.ruleset = this.getRuleset();
}

public load(idx = -1): AkimboGame {
Expand Down Expand Up @@ -139,6 +142,11 @@ export class AkimboGame extends GameBase {
return GameBase.algebraic2coords(cell, this.boardSize);
}

private getRuleset(): "default" | "okimba" {
if (this.variants.includes("okimba")) { return "okimba"; }
return "default";
}

private getLines(): [PlayerLines,PlayerLines] {
const lineN: string[] = [];
const lineS: string[] = [];
Expand Down Expand Up @@ -269,7 +277,7 @@ export class AkimboGame extends GameBase {
const g = new RectGrid(this.boardSize, this.boardSize);
const [x,y] = this.algebraic2coords(cell);

return [g.ray(x, y, dir1).map(n => this.coords2algebraic(...n))[0],
return [g.ray(x, y, dir1).map(n => this.coords2algebraic(...n))[0],
g.ray(x, y, dir2).map(n => this.coords2algebraic(...n))[0]];
}
}
Expand Down Expand Up @@ -297,13 +305,24 @@ export class AkimboGame extends GameBase {
if (m.length === 0) {
result.valid = true;
result.complete = -1;
result.message = i18next.t("apgames:validation.akimbo.INSTRUCTIONS")
if (this.ruleset === "okimba") {
result.message = i18next.t("apgames:validation.akimbo.INSTRUCTIONS_OKIMBA")
} else {
result.message = i18next.t("apgames:validation.akimbo.INSTRUCTIONS")
}
return result;
}

m = m.toLowerCase();
m = m.replace(/\s+/g, "");

if (this.ruleset === "okimba" && m === "pass") {
result.valid = true;
result.complete = 1;
result.message = i18next.t("apgames:validation._general.VALID_MOVE");
return result;
}

try { // check if cell is valid
this.algebraic2coords(m);
} catch {
Expand Down Expand Up @@ -332,6 +351,15 @@ export class AkimboGame extends GameBase {
return result;
}

if (this.ruleset === "okimba") {
const existNaked = this.nakedDiagonalP1.length > 0 || this.nakedDiagonalP2.length > 0;
if (existNaked && newNakeds > 0) {
result.valid = false;
result.message = i18next.t("apgames:validation.akimbo.EXCESS_NAKED_DIAGONALS");
return result;
}
}

result.valid = true;
result.complete = 1;
result.message = i18next.t("apgames:validation._general.VALID_MOVE");
Expand All @@ -354,46 +382,50 @@ export class AkimboGame extends GameBase {
if (! result.valid) { throw new UserFacingError("VALIDATION_GENERAL", result.message) }
}

this.board.set(m, this.currplayer);
this.results.push( {type: "place", where: m} );
if (this.ruleset === "okimba" && m === "pass") {
this.results.push({type: "pass"});
} else {

this.board.set(m, this.currplayer);
this.results.push( {type: "place", where: m} );

const prevNaked = this.currplayer === 1 ? this.nakedDiagonalP1 : this.nakedDiagonalP2;
let isNaked = prevNaked.length > 0;
const prevNaked = this.currplayer === 1 ? this.nakedDiagonalP1 : this.nakedDiagonalP2;
let isNaked = prevNaked.length > 0;

if ( isNaked ) { // a naked diagonal existed
if ( this.numNakedDiagonals(prevNaked[0]) === 0 ) { // but not anymore
isNaked = this.numNakedDiagonals(m) > 0; // check if 'm' created a new naked diagonal
if ( isNaked ) { // a naked diagonal existed
if ( this.numNakedDiagonals(prevNaked[0]) === 0 ) { // but not anymore
isNaked = this.numNakedDiagonals(m) > 0; // check if 'm' created a new naked diagonal
}
}
}

if ( !isNaked ) { // remove naked diagonal
if ( this.currplayer === 1 ) {
this.nakedDiagonalP1 = [];
} else {
this.nakedDiagonalP2 = [];
if ( !isNaked ) { // remove naked diagonal
if ( this.currplayer === 1 ) {
this.nakedDiagonalP1 = [];
} else {
this.nakedDiagonalP2 = [];
}
}
}

if ( this.numNakedDiagonals(m) > 0 ) {
if ( this.currplayer === 1 ) {
this.nakedDiagonalP1 = [m, this.pairNakedDiagonal(m)];
} else {
this.nakedDiagonalP2 = [m, this.pairNakedDiagonal(m)];
if ( this.numNakedDiagonals(m) > 0 ) {
if ( this.currplayer === 1 ) {
this.nakedDiagonalP1 = [m, this.pairNakedDiagonal(m)];
} else {
this.nakedDiagonalP2 = [m, this.pairNakedDiagonal(m)];
}
}
}

if ( this.isCrosscut(m) ) {
const toDelete = this.pairNakedDiagonal(m);
this.board.delete(toDelete);
this.results.push( {type: "remove", where: toDelete} );

// m and its pair are the one and only naked diagonal of current player
// so the naked diagonal disappears, since its pair is about to be removed
// now check if the removal created a new naked diagonal at its adjacent pieces
if ( this.currplayer === 1 ) {
this.nakedDiagonalP1 = this.checkCrossCutRemoval(toDelete);
} else {
this.nakedDiagonalP2 = this.checkCrossCutRemoval(toDelete);
if ( this.isCrosscut(m) ) {
const toDelete = this.pairNakedDiagonal(m);
this.board.delete(toDelete);
this.results.push( {type: "remove", where: toDelete} );
// m and its pair are the one and only naked diagonal of current player
// so the naked diagonal disappears, since its pair is about to be removed
// now check if the removal created a new naked diagonal at its adjacent pieces
if ( this.currplayer === 1 ) {
this.nakedDiagonalP1 = this.checkCrossCutRemoval(toDelete);
} else {
this.nakedDiagonalP2 = this.checkCrossCutRemoval(toDelete);
}
}
}

Expand Down Expand Up @@ -545,6 +577,13 @@ export class AkimboGame extends GameBase {
return rep;
}

public getButtons(): ICustomButton[] {
if ( this.ruleset === "okimba" ) {
return [{ label: "pass", move: "pass" }];
}
return [];
}

public state(): IAkimboState {
return {
game: AkimboGame.gameinfo.uid,
Expand Down
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