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tile.go
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tile.go
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package mahjong
import (
"fmt"
)
var tileNames = []string{"条", "筒", "万"}
type Tile struct {
Id int
Suit int //花色
Rank int //点数
Index int //索引(1~9, 11~19)
}
func (t *Tile) String() string {
return fmt.Sprintf("%d%s", t.Rank, tileNames[t.Suit])
}
func (t *Tile) Equals(other *Tile) bool {
return t.Index == other.Index
}
// 21, 23, 25: 中、发、白
//ps:此处返回的tile的id不正确
func TileFromIndex(idx int) *Tile {
if idx < 0 || idx > MaxTileIndex || idx%10 == 0 || idx == 22 || idx == 24 {
return nil
}
return &Tile{
Suit: idx / 10,
Rank: idx % 10,
Index: idx,
}
}
func IndexFromID(id int) int {
if id < 0 {
panic(fmt.Errorf("ilegal tile id: %d", id))
}
var (
tmp = id / 4
h = tmp / 9
v = tmp%9 + 1
i = h*10 + v
)
return i
}
//id: 0~3 -> 1条 4~7 -> 2条 ...
//0~35 =>条 36~71 =>筒
func TileFromID(id int) *Tile {
if id < 0 {
panic("illegal tile id")
}
var (
tmp = id / 4
h = tmp / 9
v = tmp%9 + 1
i = h*10 + v
)
return &Tile{Suit: h, Rank: v, Index: i, Id: id}
}