Rock-paper-scissors: Difference between revisions
Go solution
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(Go solution) |
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Line 220:
}
}</lang>
=={{header|Go}}==
<lang go>package main
import (
"fmt"
"rand"
"strings"
"time"
)
const rps = "rps"
var msg = []string{
"Rock breaks scissors",
"Paper covers rock",
"Scissors cut paper",
}
func main() {
rand.Seed(time.Nanoseconds())
fmt.Println("Rock Paper Scissors")
fmt.Println("Enter r, p, or s as your play. Anything else ends the game.")
fmt.Println("Running score shown as <your wins>:<my wins>")
var pi string // player input
var aScore, pScore int
sl := 3 // for output alignment
pcf := make([]int, 3) // pcf = player choice frequency
var plays int
aChoice := rand.Intn(3) // ai choice for first play is completely random
for {
// get player choice
fmt.Print("Play: ")
_, err := fmt.Scanln(&pi) // lazy
if err != nil || len(pi) != 1 {
break
}
pChoice := strings.Index(rps, pi)
if pChoice < 0 {
break
}
pcf[pChoice]++
plays++
// show result of play
fmt.Printf("My play:%s%c. ", strings.Repeat(" ", sl-2), rps[aChoice])
switch (aChoice - pChoice + 3) % 3 {
case 0:
fmt.Println("Tie.")
case 1:
fmt.Printf("%s. My point.\n", msg[aChoice])
aScore++
case 2:
fmt.Printf("%s. Your point.\n", msg[pChoice])
pScore++
}
// show score
sl, _ = fmt.Printf("%d:%d ", pScore, aScore)
// compute ai choice for next play
switch rn := rand.Intn(plays); {
case rn < pcf[0]:
aChoice = 1
case rn < pcf[0]+pcf[1]:
aChoice = 2
default:
aChoice = 0
}
}
}</lang>
Sample output:
<pre>
Rock Paper Scissors
Enter r, p, or s as your play. Anything else ends the game.
Running score shown as <your wins>:<my wins>
Play: r
My play: r. Tie.
0:0 Play: p
My play: p. Tie.
0:0 Play: s
My play: p. Scissors cut paper. Your point.
1:0 Play: r
My play: p. Paper covers rock. My point.
1:1 Play: r
My play: r. Tie.
1:1 Play: r
My play: p. Paper covers rock. My point.
1:2 Play:
</pre>
=={{header|Icon}} and {{header|Unicon}}==
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