117 lines
2.3 KiB
Go
117 lines
2.3 KiB
Go
package blackjack
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import (
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"errors"
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)
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// 牌型
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const (
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CardTypeInvalid = 0
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CardTypeA10 = 1 // 黑杰克：一张A 一张10
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CardTypeFive = 2 // 五小龙：五张牌且没有爆牌
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CardTypeOther = 3 // 其它点数：点数小于等于21
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CardTypeBoom = 4 // 爆牌：点数大于21
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)
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var CardTypeSort = map[int32]int{
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CardTypeBoom: 1,
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CardTypeOther: 2,
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CardTypeFive: 3,
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CardTypeA10: 4,
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}
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// 获取牌型和点数
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func GetCardsType(cards []*Card) (int32, []int32) {
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l := len(cards)
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if l <= 0 || l > MaxCardNum {
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return 0, []int32{}
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}
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// 黑杰克
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if l == 2 {
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if (cards[0].Point() == 1 && cards[1].Point() == 10) || (cards[0].Point() == 10 && cards[1].Point() == 1) {
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return CardTypeA10, []int32{21}
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}
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}
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// 所有点数
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var point int32
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for _, v := range cards {
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point += int32(v.Point())
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}
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points := []int32{point}
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for _, v := range cards {
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if v.Point() == 1 {
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if point+10 > 21 {
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break
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}
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point += 10
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points = append(points, point)
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}
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}
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i := -1 // 最大点数且不爆的点数下标
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for k, v := range points {
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if v <= 21 {
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i = k
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} else {
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break
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}
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}
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// 五小龙
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if l == 5 {
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if i > -1 {
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if points[i] == 21 {
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return CardTypeFive, []int32{21}
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} else {
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return CardTypeFive, points[:i+1]
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}
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}
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}
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// 爆牌
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if points[0] > 21 {
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return CardTypeBoom, []int32{points[0]}
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}
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// 其他点数
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if points[i] == 21 {
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return CardTypeOther, []int32{21}
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}
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return CardTypeOther, points[:i+1]
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}
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// 手牌比大小
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// bankCards 庄家手牌
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// playerCards 闲家手牌
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// 返回值
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// -1 c1 < c2
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// 0 c1 == c2
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// 1 c1 > c2
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func CompareCards(bankCards, playerCards []*Card) (int, error) {
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t1, p1 := GetCardsType(bankCards)
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t2, p2 := GetCardsType(playerCards)
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if t1 == CardTypeInvalid || t2 == CardTypeInvalid {
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return 0, errors.New("Invalid CardType ")
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}
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// 牌型比较
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if CardTypeSort[t1] > CardTypeSort[t2] {
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return 1, nil
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}
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if CardTypeSort[t1] < CardTypeSort[t2] {
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return -1, nil
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}
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// 庄闲都爆牌，则庄赢
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if t1 == CardTypeBoom {
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return 1, nil
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}
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// 黑杰克，五小龙 平局
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if t1 == CardTypeA10 || t1 == CardTypeFive {
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return 0, nil
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}
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// 比点数
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if p1[len(p1)-1] > p2[len(p2)-1] {
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return 1, nil
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}
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if p1[len(p1)-1] == p2[len(p2)-1] {
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return 0, nil
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}
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return -1, nil
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}
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