Barelydead /
oop-chess
| @@ 5-46 (lines=42) @@ | ||
| 2 | * King module |
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| 3 | * @module |
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| 4 | */ |
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| 5 | "use strict"; |
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| 6 | ||
| 7 | /** |
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| 8 | * Class with King logic |
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| 9 | */ |
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| 10 | class King { |
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| 11 | /** |
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| 12 | * init |
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| 13 | */ |
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| 14 | constructor(color) { |
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| 15 | this.symbol = "K"; |
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| 16 | this.moved = 0; |
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| 17 | this.active = true; |
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| 18 | this.color = color; |
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| 19 | this.rows = [null, "A", "B", "C", "D", "E", "F", "G", "H"]; |
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| 20 | this.img = this.color === "white" ? "w-king" : "b-king"; |
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| 21 | } |
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| 22 | ||
| 23 | legalMove(x, y, nx, ny) { |
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| 24 | let xNum = this.rows.indexOf(x); |
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| 25 | let nxNum = this.rows.indexOf(nx); |
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| 26 | ||
| 27 | let xStep = Math.abs(xNum - nxNum); |
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| 28 | let yStep = Math.abs(y - ny) |
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| 29 | if (xStep > 1 || yStep > 1) { |
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| 30 | return false |
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| 31 | } |
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| 32 | ||
| 33 | if (x == nx && y !== ny || x !== nx && y == ny) { |
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| 34 | return true |
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| 35 | } |
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| 36 | ||
| 37 | if (xStep === yStep) { |
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| 38 | return true |
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| 39 | } |
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| 40 | ||
| 41 | return false; |
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| 42 | } |
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| 43 | } |
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| 44 | ||
| 45 | ||
| 46 | module.exports = King; |
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| 47 | ||
| @@ 5-43 (lines=39) @@ | ||
| 2 | * Queen module |
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| 3 | * @module |
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| 4 | */ |
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| 5 | "use strict"; |
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| 6 | ||
| 7 | /** |
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| 8 | * Class with Queen logic |
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| 9 | */ |
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| 10 | class Queen { |
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| 11 | /** |
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| 12 | * init |
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| 13 | */ |
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| 14 | constructor(color) { |
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| 15 | this.symbol = "Q"; |
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| 16 | this.moved = 0; |
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| 17 | this.active = true; |
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| 18 | this.color = color; |
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| 19 | this.rows = [null, "A", "B", "C", "D", "E", "F", "G", "H"]; |
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| 20 | this.img = this.color === "white" ? "w-queen" : "b-queen"; |
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| 21 | } |
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| 22 | ||
| 23 | legalMove(x, y, nx, ny) { |
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| 24 | // row |
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| 25 | if (x == nx && y !== ny || x !== nx && y == ny) { |
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| 26 | return true |
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| 27 | } |
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| 28 | ||
| 29 | let xNum = this.rows.indexOf(x); |
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| 30 | let nxNum = this.rows.indexOf(nx); |
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| 31 | ||
| 32 | let xStep = Math.abs(xNum - nxNum); |
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| 33 | let yStep = Math.abs(y - ny) |
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| 34 | if (xStep === yStep) { |
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| 35 | return true |
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| 36 | } |
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| 37 | ||
| 38 | return false; |
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| 39 | } |
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| 40 | } |
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| 41 | ||
| 42 | ||
| 43 | module.exports = Queen; |
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| 44 | ||
| @@ 5-39 (lines=35) @@ | ||
| 2 | * Knight module |
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| 3 | * @module |
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| 4 | */ |
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| 5 | "use strict"; |
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| 6 | ||
| 7 | /** |
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| 8 | * Class with Knight logic |
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| 9 | */ |
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| 10 | class Knight { |
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| 11 | /** |
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| 12 | * init |
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| 13 | */ |
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| 14 | constructor(color) { |
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| 15 | this.symbol = "N"; |
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| 16 | this.moved = 0; |
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| 17 | this.active = true; |
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| 18 | this.color = color; |
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| 19 | this.rows = [null, "A", "B", "C", "D", "E", "F", "G", "H"]; |
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| 20 | this.img = this.color === "white" ? "w-knight" : "b-knight"; |
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| 21 | } |
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| 22 | ||
| 23 | legalMove(x, y, nx, ny) { |
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| 24 | let xNum = this.rows.indexOf(x); |
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| 25 | let nxNum = this.rows.indexOf(nx); |
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| 26 | ||
| 27 | let xStep = Math.abs(xNum - nxNum); |
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| 28 | let yStep = Math.abs(y - ny) |
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| 29 | ||
| 30 | if (xStep == 2 && yStep == 1 || xStep == 1 && yStep == 2) { |
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| 31 | return true; |
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| 32 | } |
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| 33 | ||
| 34 | return false; |
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| 35 | } |
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| 36 | } |
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| 37 | ||
| 38 | ||
| 39 | module.exports = Knight; |
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| 40 | ||
