catbase/plugins/dice/dice.go

77 lines
1.8 KiB
Go

// © 2013 the CatBase Authors under the WTFPL. See AUTHORS for the list of authors.
package dice
import (
"github.com/velour/catbase/bot"
"github.com/velour/catbase/bot/msg"
)
import (
"fmt"
"math/rand"
)
// This is a dice plugin to serve as an example and quick copy/paste for new plugins.
type DicePlugin struct {
Bot bot.Bot
}
// NewDicePlugin creates a new DicePlugin with the Plugin interface
func New(b bot.Bot) *DicePlugin {
dp := &DicePlugin{
Bot: b,
}
b.Register(dp, bot.Message, dp.message)
b.Register(dp, bot.Help, dp.help)
return dp
}
func rollDie(sides int) int {
return rand.Intn(sides) + 1
}
// Message responds to the bot hook on recieving messages.
// This function returns true if the plugin responds in a meaningful way to the users message.
// Otherwise, the function returns false and the bot continues execution of other plugins.
func (p *DicePlugin) message(kind bot.Kind, message msg.Message, args ...interface{}) bool {
if !message.Command {
return false
}
channel := message.Channel
nDice := 0
sides := 0
if n, err := fmt.Sscanf(message.Body, "%dd%d", &nDice, &sides); n != 2 || err != nil {
return false
}
if sides < 2 || nDice < 1 || nDice > 20 {
p.Bot.Send(bot.Message, channel, "You're a dick.")
return true
}
rolls := fmt.Sprintf("%s, you rolled: ", message.User.Name)
for i := 0; i < nDice; i++ {
rolls = fmt.Sprintf("%s %d", rolls, rollDie(sides))
if i != nDice-1 {
rolls = fmt.Sprintf("%s,", rolls)
} else {
rolls = fmt.Sprintf("%s.", rolls)
}
}
p.Bot.Send(bot.Message, channel, rolls)
return true
}
// Help responds to help requests. Every plugin must implement a help function.
func (p *DicePlugin) help(kind bot.Kind, message msg.Message, args ...interface{}) bool {
p.Bot.Send(bot.Message, message.Channel, "Roll dice using notation XdY. Try \"3d20\".")
return true
}