57 lines
1.7 KiB
TypeScript
57 lines
1.7 KiB
TypeScript
import type { Card, CardColor, CardValue } from './types'
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const COLORS: CardColor[] = ['red', 'yellow', 'green', 'blue']
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const NUMBER_VALUES: CardValue[] = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']
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const ACTION_VALUES: CardValue[] = ['skip', 'reverse', 'draw2']
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let cardIdCounter = 0
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function makeCard(color: CardColor, value: CardValue): Card {
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return { id: `card-${cardIdCounter++}`, color, value }
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}
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export function createDeck(): Card[] {
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cardIdCounter = 0
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const deck: Card[] = []
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for (const color of COLORS) {
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deck.push(makeCard(color, '0'))
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for (const value of NUMBER_VALUES.slice(1)) {
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deck.push(makeCard(color, value), makeCard(color, value))
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}
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for (const value of ACTION_VALUES) {
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deck.push(makeCard(color, value), makeCard(color, value))
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}
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}
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for (let i = 0; i < 4; i++) {
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deck.push(makeCard('wild', 'wild'), makeCard('wild', 'wild4'))
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}
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return shuffle(deck)
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}
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export function shuffle<T>(array: T[]): T[] {
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const result = [...array]
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for (let i = result.length - 1; i > 0; i--) {
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const j = Math.floor(Math.random() * (i + 1))
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const tmp = result[i]!
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result[i] = result[j]!
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result[j] = tmp
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}
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return result
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}
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export function drawRandom(deck: Card[]): { card: Card; deck: Card[] } | null {
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if (deck.length === 0) return null
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const index = Math.floor(Math.random() * deck.length)
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const card = deck[index]!
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const newDeck = [...deck.slice(0, index), ...deck.slice(index + 1)]
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return { card, deck: newDeck }
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}
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export function returnToDeckRandom(deck: Card[], card: Card): Card[] {
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const index = Math.floor(Math.random() * (deck.length + 1))
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return [...deck.slice(0, index), card, ...deck.slice(index)]
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}
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