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roulette.go
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roulette.go
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package payout
import (
"fmt"
"strconv"
)
const (
// subgame constants
RED_BLACK = 0
ODD_EVEN = 1
LOW_UPPER_HALF = 2
COLUMNS = 3
LOWER_MID_UPPER_3RD = 4
EXACT = 5
)
func getRandNum(hash string) (int, error) {
var num int64
var err error
rand := -1
if len(hash) > 0 {
num, err = strconv.ParseInt(hash[0:7], 16, 64)
if err != nil {
return rand, fmt.Errorf("hash '%s' is malformed - %s", hash, err.Error())
}
} else {
return -1, fmt.Errorf("hash is missing - %s", err.Error())
}
rand = int(num % 37)
return rand, nil
}
func winner(subgame, chipspot, randNum int) bool {
switch subgame {
case RED_BLACK:
if randNum == 0 {
return false
}
// 0 == red
// 1 == black
if chipspot == 0 {
if randNum == 1 || randNum == 3 || randNum == 5 || randNum == 7 || randNum == 9 ||
randNum == 12 || randNum == 14 || randNum == 16 || randNum == 18 ||
randNum == 19 || randNum == 21 || randNum == 23 || randNum == 25 || randNum == 27 ||
randNum == 30 || randNum == 32 || randNum == 34 || randNum == 36 {
return true
} else {
return false
}
} else if chipspot == 1 {
if randNum == 2 || randNum == 4 || randNum == 6 || randNum == 8 ||
randNum == 10 || randNum == 11 || randNum == 13 || randNum == 15 || randNum == 17 ||
randNum == 20 || randNum == 22 || randNum == 24 || randNum == 26 ||
randNum == 28 || randNum == 29 || randNum == 31 || randNum == 33 || randNum == 35 {
return true
} else {
return false
}
}
case ODD_EVEN:
if randNum == 0 {
return false
}
// 0 == even
// 1 == odd
if chipspot % 2 == randNum % 2 {
return true
} else {
return false
}
case LOW_UPPER_HALF:
if randNum == 0 {
return false
}
// 10 (1-18)
// 28 (19-36)
if chipspot == 10 {
if randNum >= 1 && randNum <= 18 {
return true
} else {
return false
}
} else if chipspot == 28 {
if randNum >= 19 && randNum <= 36 {
return true
} else {
return false
}
}
case COLUMNS:
if randNum == 0 {
return false
}
// 1 (1st column)
// 2 (2nd column)
// 3 (3rd column)
if chipspot == 1 {
if randNum == 3 || randNum == 6 || randNum == 9 || randNum == 12 ||
randNum == 15 || randNum == 18 || randNum == 21 || randNum == 24 ||
randNum == 27 || randNum == 30 || randNum == 33 || randNum == 36 {
return true
} else {
return false
}
} else if chipspot == 2 {
if randNum == 2 || randNum == 5 || randNum == 8 || randNum == 11 ||
randNum == 14 || randNum == 17 || randNum == 20 || randNum == 23 ||
randNum == 26 || randNum == 29 || randNum == 32 || randNum == 35 {
return true
} else {
return false
}
} else if chipspot == 3 {
if randNum == 1 || randNum == 4 || randNum == 7 || randNum == 10 ||
randNum == 13 || randNum == 16 || randNum == 19 || randNum == 22 ||
randNum == 25 || randNum == 28 || randNum == 31 || randNum == 34 {
return true
} else {
return false
}
}
case LOWER_MID_UPPER_3RD:
if randNum == 0 {
return false
}
// 6 (1-12)
// 18 (13-24)
// 30 (25-36)
if chipspot == 6 {
if randNum >= 1 && randNum <= 12 {
return true
} else {
return false
}
} else if chipspot == 18 {
if randNum >= 13 && randNum <= 24 {
return true
} else {
return false
}
} else if chipspot == 30 {
if randNum >= 25 && randNum <= 36 {
return true
} else {
return false
}
}
case EXACT:
if chipspot == randNum {
return true
} else {
return false
}
default:
return false
}
return false
}