From: Benjamin Auder Date: Sat, 30 Dec 2023 19:58:25 +0000 (+0100) Subject: Draft Diamond variant X-Git-Url: https://git.auder.net/app_dev.php/%7B%7B%20asset%28%27mixstore/doc/html/index.html?a=commitdiff_plain;h=5212758164eaa08e382b7bc281f87999c8af352b;p=xogo.git Draft Diamond variant --- diff --git a/base_rules.js b/base_rules.js index 757707d..0f89cc4 100644 --- a/base_rules.js +++ b/base_rules.js @@ -579,11 +579,18 @@ export default class ChessRules { // Get SVG board (background, no pieces) getSvgChessboard() { - const flipped = this.flippedBoard; let board = ` `; + board += this.getBaseSvgChessboard(); + board += ""; + return board; + } + + getBaseSvgChessboard() { + let board = ""; + const flipped = this.flippedBoard; for (let i=0; i < this.size.x; i++) { for (let j=0; j < this.size.y; j++) { if (!this.onBoard(i, j)) @@ -605,7 +612,6 @@ export default class ChessRules { />`; } } - board += ""; return board; } @@ -2341,10 +2347,11 @@ export default class ChessRules { if (this.options["teleport"]) { if ( this.subTurnTeleport == 1 && - move.vanish.length > move.appear.length && + move.vanish.length == 2 && + move.appear.length == 1 && move.vanish[1].c == this.turn ) { - const v = move.vanish[move.vanish.length - 1]; + const v = move.vanish[1]; this.captured = {x: v.x, y: v.y, c: v.c, p: v.p}; this.subTurnTeleport = 2; return; diff --git a/variants.js b/variants.js index 524538c..c9cdc98 100644 --- a/variants.js +++ b/variants.js @@ -41,7 +41,7 @@ const variants = [ {name: 'Cylinder', desc: 'Neverending rows'}, {name: 'Cwda', desc: 'New teams', disp: 'Different armies'}, {name: 'Dark', desc: 'In the shadow'}, -// {name: 'Diamond', desc: 'Rotating board'}, + {name: 'Diamond', desc: 'Rotating board'}, // {name: 'Dice', desc: 'Roll the dice'}, // {name: 'Discoduel', desc: 'Enter the disco', disp: 'Disco Duel'}, // {name: 'Dobutsu', desc: "Let's catch the Lion!"}, diff --git a/variants/Diamond/class.js b/variants/Diamond/class.js new file mode 100644 index 0000000..5145184 --- /dev/null +++ b/variants/Diamond/class.js @@ -0,0 +1,96 @@ +import ChessRules from "/base_rules.js"; +import {ArrayFun} from "/utils/array.js"; +import {Random} from "/utils/alea.js"; + +export default class DiamondRules extends ChessRules { + + get hasFlags() { + return false; + } + + get hasEnpassant() { + return false; + } + + getSvgChessboard() { + const diagonal = 10 * this.size.y * Math.sqrt(2); + const halfDiag = 0.5 * diagonal; + const deltaTrans = 10 * this.size.y * (Math.sqrt(2) - 1) / 2; + let board = ` + `; + board += ``; + board += this.getBaseSvgChessboard(); + board += ""; + return board; + } + + getPieceWidth(rwidth) { + return (0.95 * rwidth / (Math.sqrt(2) * this.size.y)); + } + + getPixelPosition(i, j, r) { + if (i < 0 || j < 0 || typeof i == "string") + return super.getPixelPosition(i, j, r); + const sqSize = this.getPieceWidth(r.width) / 0.95; + const flipped = this.flippedBoard; + i = (flipped ? this.size.x - 1 - i : i); + j = (flipped ? this.size.y - 1 - j : j); + const sq2 = Math.sqrt(2); + const shift = [- sqSize / 2, sqSize * (sq2 - 1) / 2]; + const x = (j - i) * sqSize / sq2 + shift[0] + r.width / 2; + const y = (i + j) * sqSize / sq2 + shift[1]; + return [r.x + x, r.y + y]; + } + + genRandInitBaseFen() { + if (this.options["randomness"] == 0) { + return { + fen: "krbp4/rqnp4/nbpp4/pppp4/4PPPP/4PPBN/4PNQR/4PBRK", + o: {} + }; + } + let pieces = { w: new Array(8), b: new Array(8) }; + for (let c of ["w", "b"]) { + if (c == 'b' && options.randomness == 1) { + pieces['b'] = pieces['w']; + break; + } + // Get random squares for every piece, totally freely + let positions = Random.shuffle(ArrayFun.range(8)); + const composition = ['b', 'b', 'r', 'r', 'n', 'n', 'k', 'q']; + const rem2 = positions[0] % 2; + if (rem2 == positions[1] % 2) { + // Fix bishops (on different colors) + for (let i=2; i<8; i++) { + if (positions[i] % 2 != rem2) { + [positions[1], positions[i]] = [positions[i], positions[1]]; + break; + } + } + } + for (let i = 0; i < 8; i++) + pieces[c][positions[i]] = composition[i]; + } + const fen = ( + pieces["b"].slice(0, 3).join("") + "p4/" + + pieces["b"].slice(3, 6).join("") + "p4/" + + pieces["b"].slice(6, 8).join("") + "pp4/" + + "pppp4/4PPPP/" + + "4PP" + pieces["w"].slice(6, 8).reverse().join("").toUpperCase() + "/" + + "4P" + pieces["w"].slice(3, 6).reverse().join("").toUpperCase() + "/" + + "4P" + pieces["w"].slice(0, 3).reverse().join("").toUpperCase()); + return { fen: fen, o: {} }; + } + + pieces(color, x, y) { + let res = super.pieces(color, x, y); + const pawnShift = this.getPawnShift(color || 'w'); + res['p'].moves = [{steps: [[pawnShift, pawnShift]], range: 1}]; + res['p'].attack = [{steps: [[0, pawnShift], [pawnShift, 0]], range: 1}]; + return res; + } + +}; diff --git a/variants/Diamond/rules.html b/variants/Diamond/rules.html new file mode 100644 index 0000000..9f172b1 --- /dev/null +++ b/variants/Diamond/rules.html @@ -0,0 +1,13 @@ +

The board is rotated by 45°, and then the game follow usual rules.

+ +

Pawns move forward "one diagonal", and capture forward "orthogonally".

+ +

+ See + + Diamond Chess + + on chessvariants.com. +

+ +

James Alexander Porterfield Rynd (1886).

diff --git a/variants/Diamond/style.css b/variants/Diamond/style.css new file mode 100644 index 0000000..a3550bc --- /dev/null +++ b/variants/Diamond/style.css @@ -0,0 +1 @@ +@import url("/base_pieces.css");